Reinforced Concrete. Dr S.Sreenath Phd, MSc (Engg), MSc (ICM), MBA
|
|
- Ethan Stokes
- 5 years ago
- Views:
Transcription
1 Reinforced Concrete Dr S.Sreenath Phd, MSc (Engg), MSc (ICM), MBA
2 Concrete Concrete is mainly composed of three materials: Cement Water Aggregate Admixture (Sometimes added)
3 Concrete: Advantages Good compressive strength Protection of embedded steel Flexibility of application
4 Concrete: Disadvantages Low tensile strength Rather high density Prone to chemical attack
5 Cement Powder form Mix with water, a chemical reaction takes place. Produces a very hard and strong binding medium for the aggregate particles.
6 Hydration of cement When cement comes in contact with water, the water molecules react with individual compounds. By time produce a firm mass which give cement its bonding properties, strength and hardness. This process is termed hydration.
7 Types of cement Ordinary Portland Cement (OPC) Rapid hardening Portland Cement (RHPC) Low-heat Portland Cement (LHPC) Sulfate resisting Portland Cement (SRPC) Portland Blastfurnance Cement (PBFC) Waterproof and Water Repellant Cement
8 Cement Storage and Preparation Kept dry at all times. Shed should have water proofed roof and walls. Raised floor. By elevating on bricks or blocks. Concrete batching plants, cement is stored in silos.
9 Aggregates Aggregates are inert particles bound together by the cement paste to form mortar. The performance of concrete depends largely on the physical, thermal and chemical properties of its aggregates. Also called as filler materials as 60 to 80% of the volume of concrete is made up of aggregates.
10 Classification of Aggregates Heavyweight aggregate Normal aggregate Lightweight aggregate
11 Functions of Aggregates Reduce costs Modify properties of concrete Reduce dry shrinkage
12 Water in Concrete React with cement and cause it to set and harden. It facilitates mixing, placing and compacting of the fresh concrete. Used for washing the aggregates. For curing purposes. Amount of water content is very important to decide the properties of fresh and hardened concrete. Tap water is acceptable for mixing water.
13 Admixtures To improve the properties of fresh or hardened concrete. Make changes in the properties of hydration, liberation of heat, formation of pores and the development of the gel structure in concrete. To increase workability without increasing water content or to decrease the water content at the same workability. To retard or accelerate both initial and final setting times.
14 Concrete Admixtures usuage To improve the workability of the fresh concrete. To reduce water content for a given workability thereby increasing the strength. To increase durability of hardened concrete. To retard setting or to increase it. To impart colour to concrete. To maintain volume stability by reducing or offsetting shrinkage during concreting. To increase concrete resistance to freezing and thawing.
15 Different types of Admixtures Air-entraining agents Accelerating agents Retarders Water reducers or plasticizers Super plasticizers Bonding admixtures Water repelling agents
16 Composite Action of Reinforced Concrete Concrete does not resist tensile forces. Reinforcement is designed to carry these tensile forces, which are transferred by bond between the interface of the two materials. For adequate bonding, some reinforcement bars are ribbed or twisted. Proper concrete mixes provide adequate impermeability of the concrete against water intrusion and bar corrosion. Close values of thermal efficient coefficient of steel and concrete.
17 Stress Strain Relations Load applied, strain increases linearly with stress. Concrete behaves as an elastic material. After further loading, the curve is no longer linear and the concrete behaves like plastic material. In the plastic range, if the load is removed, the deformation would not recover.
18 Stress Strain Curve for Concrete in compression
19 Compressive strength of Concrete Grade of Concrete Minimum compressive strength N/mm 2 at 7 days Specified characteristic compressive strength (N/mm 2 ) at 28 days M M M M M M M
20 Compressive strength of Concrete Age Strength percent 1 day 16% 3 days 40% 7 days 65% 14 days 90% 28 days 99%
21 Compressive strength of concrete
22 Applications of Reinforced Concrete An important construction material. Versatility, adaptability, resistance to fire and corrosion result in negligence maintenance costs. Better quality cement resulted in stronger and more durable concrete. Ideal for column, beam, slab construction of residential and commercial structures. The durability of concrete is influenced by the exposure conditions, the concrete quality, the cover to the reinforcement and the width of cracks.
23 Revision - Hydration The reaction with water is termed "hydration". This involves many different reactions, often occurring at the same time. As the reactions proceed, the products of the hydration process gradually bond together the individual sand and gravel particles, and other components of the concrete, to form a solid mass. 23 of 20
24 Revision - Hydration The main product involved in the binding of cement and water is heat, which is released when the concrete is being hardened. This process is known as the heat of hydration. Heat of hydration can be managed while designing and pouring concrete, during the process of curing and hardening. However, if designers do not allow for the heat, it can cause serious issues with cracking and can also disturb the structural integrity of the concrete.
25 Temperature rise of mass concrete under adiabatic condition (Adapted from ACI R-07)
26 Setting time of Cement Initial setting time is that time period between the time water is added to cement and time at which 1 mm square section needle fails to penetrate the cement paste, placed in the Vicat s mould 5 mm to 7 mm from the bottom of the mould. Final setting time is that time period between the time water is added to cement and the time at which 1 mm needle makes an impression on the paste in the mould but 5 mm attachment does not make any impression.
27 Vicat Apparatus
28 Setting Time
29 Workability Workability is the ability of a fresh (plastic) concrete mix to fill the form/mold properly with the desired work (vibration) and without reducing the concrete's quality. Workability depends on water content, aggregate (shape and size distribution), cementitious content and age (level of hydration) and can be modified by adding chemical admixtures, like superplasticizer. Raising the water content or adding chemical admixtures increases concrete workability.
30 Concrete Slump Test The test measures consistency of concrete in that specific batch. It is performed to check consistency of freshly made concrete. Consistency refers to the ease with which concrete flows. It is used to indicate degree of wetness. Consistency affects workability of concrete.
31 Concrete Slump Test Metal mould, in the shape of the frustrum of a cone, open at both ends, and provided with the handle, top internal diameter 4 in (100 mm), and bottom internal diameter 8 in (200 mm) with a height of 1 ft (300 mm). A 2 ft (600 mm) long bullet nosed metal rod, 5/8 in (16 mm) in diameter. The test is carried out using a mould known as a slump cone. The cone is placed on a hard non-absorbent surface. This cone is filled with fresh concrete in three stages. Each time, each layer is tamped 25 times with a rod of standard dimensions. At the end of the third stage, concrete is struck off flush to the top of the mould. The mould is carefully lifted vertically upwards with twisting motion, so as not to disturb the concrete cone.
32
33 Specification of concrete Concrete strength is identified by grade. Grade 25 has a characteristic cube crushing strength of 25 N/sq mm after 28 days of curing. Normal concrete grades are 30,35 and 40. The concrete mix is classified as designed or prescribed. Designed mix Contractor responsible for the mix proportion to achieve the required strength and workability. Prescribed mix The C&S Consultant specifies the mix proportions.
34 Design Mix
35
36 Batching and Mixing of Concrete Batching refers to the process of measuring the correct amounts of the constituent materials. Done either by weight or volume. But weight recommended to be more accurate. Measurement equipment regularly calibrated.
37 Batching of cement Cement is batched either by bag or from a silo. Bulk cement is cheaper than bagged cement. Bulk cement, changes in mix proportions are made more easily.
38 Advantages of using bulk cement Bulk cement is cheaper than bagged cement. A gang of men are not needed to off-load the cement. The trouble of ensuring adequate protection of the cement during storage is avoided. The mixer can always be used to capacity without the risk of errors which may result from splitting bags. Changes in mix proportions are made more easily.
39 Batching of Aggregate Weigh buckets with balanced mechanical lever and load cell systems are widely used. Allowance to be made when the aggregate is moist.
40 Batching of Water Water can be measured by weight or volume. Allowance are made at the time of batching by deducting the water in the aggregate.
41 Batching of Admixtures Follow the recommendation of the manufacturer. Dosage to finalize based on design mix. Use of reliable and accurate dispersing equipment is important.
42 Mixing of Concrete The objective of mixing is to coat the surfaces of all aggregates with cement paste and to blend all the ingredients of concrete to give a uniform consistency. Mixing may be performed by machine or by hand. Machine mixing is generally more economical and convenient.
43 Mixing Time Mixing should continue until the concrete is uniform in colour and consistency. Concrete are discharged from hopper into the mixer truck. Mixing time depends on manufacturer s specification and the plant s performance.
44 Transporting of Concrete Transport must be rapid to ensure concrete does not dry out or lose its workability during the time it elapses between mixing and placing. Segregation must be reduced to a minimum in order to avoid non-uniform concrete. The transport should be organized. No additional water should be added to the concrete.
45 Time Limit In the case of ready mixed concrete, the usual specified requirement is that concrete shall be discharged from a truck mixer within two hours after the time of loading.
46 Methods of Transportation Truck mixers Wheel barrows Dumpers Steel skips and buckets Cranes Concrete pumps and pipe lines
47 Placing of Concrete Concrete shall be placed in a proper manner to yield optimum result.
48 Reinforcement and Formwork Is the formwork erected properly? Is the formwork correctly aligned and levelled? Can the formwork be struck without damaging the concrete? Has the release agent be applied? Is it the right one? Has the reinforcement the right cover? Are there enough spacers? Are the forms clean and free from rubbish or odd bits of timber or metal?
49 Concreting Time The interval between adding the cement to the aggregate and the completion of the placing of the concrete should not exceed 30 minutes. When the mix is transported by purpose made agitators, operating continuously, such interval may be extended to a maximum of 2 hours and the placing of concrete should not exceed 20 minutes. When retrading admixtures are used, such intervals may be further extended.
50 Earth Foundation Before placing concrete in the foundation, all loose earth must be removed from the bed. Any roots of trees passing through the foundation should be cut to prevent further growth which may pierce the concrete at a later date. The surface of the earth, if dry, should be made moist, so that earth does not absorb water from the concrete. However foundation is wet and rain soaked, the water and slush should be removed completely.
51 Placing Careless placing of concrete may cause movement and damage of the formwork. Concrete to be deposited as near as practicable to its final position. Concrete should not be deposited in a large quantity at any point. Concrete should be deposited in horizontal layers. Each layer should be compacted throughly before the succeeding layer is placed. Concrete should be carried out continuously.
52 Compaction of Concrete The objective of compaction is to remove the unwanted entrapped air. The amount of entrapped air is related to the workability. Effective way of compacting is by use of vibration. Vibration by internal or external vibrator. Over vibration will cause segregation.
53 Finishing of Concrete Common methods: 1. Screeding and levelling. 2. Brooming, Floating and Steel trowelling Screeding and levelling when the concrete is still in its plastic stage. Screeding is the process of cutting off excess concrete to bring the top surface of a slab to proper grade. Levelling is to estimate high and low spots and to embed large aggregate particles to produce desired finish.
54 Finishing concrete Floating can be done with wood or metal hand float or with a finishing machine using float blades. Floating is done to embed aggregates particles just beneath the surface. Floating is done to remove slight imperfections, humps and voids. Floating is done to compact the mortar at the surface.
55 Thank you
Concrete. Chapter 10 Properties of Fresh Concrete. Materials of Construction-Concrete 1. Wikipedia.org
Wikipedia.org Concrete Chapter 10 Properties of Fresh Concrete Materials of Construction-Concrete 1 What is Concrete? Concrete is a composite material that consists of a cement paste within which various
More informationFresh concrete can be lifted from the ground level to the upper floor level by
3a Concreting Operation 1. Concrete lifting 1.1 Hoists Fresh concrete can be lifted from the ground level to the upper floor level by hoists. However, the further distribution from the hoist to placing
More informationCONCRETE MATERIALS PROPERTIES AND TESTING
CONCRETE MATERIALS PROPERTIES AND TESTING 1 Concrete ingredients Cement Fine aggregate Coarse aggregate Water Admixtures 2 3 4 Properties of cement Physical properties of cement Fineness Standard consistency
More informationDoç. Dr. Halit YAZICI. D. E. U. Civil Engineering Department.
Doç. Dr. Halit YAZICI D. E. U. Civil Engineering Department http://kisi.deu.edu.tr/halit.yazici Chemical Admixtures In Concrete What Are They? Ingredients other than: Cement Water Aggregates Added before
More informationTopic 1 - Properties of Concrete. 1. Quick Revision
Topic 1 - Properties of Concrete 1. Quick Revision 1.1 Constituent Materials of concrete Concrete is composed mainly of three materials, namely, cement, water and aggregate, and sometimes additional material,
More informationCHAPTER 3 MATERIAL PROPERTIES AND MIX PROPORTIONS
45 CHAPTER 3 MATERIAL PROPERTIES AND MIX PROPORTIONS 3.1 GENERAL In the present investigation, it was planned to cast M40 & M50 grade concrete with and without supplementary cementitious material such
More informationLecture 13 CONCRETE WORKS
Lecture 13 TSP-308 MPK Ferdinand Fassa CONCRETE WORKS Concrete works Concrete is a man-made (rock) construction material, which is a mixture of portland cement, water, aggregates, and in some cases, admixtures.
More informationProperties of Concrete. Properties of Concrete. Properties of Concrete. Properties of Concrete. Properties of Concrete. Properties of Concrete
CIVL 1112 Contrete Introduction from CIVL 1101 1/10 Concrete is an artificial conglomerate stone made essentially of Portland cement, water, and aggregates. While cement in one form or another has been
More informationFundamentals of Concrete
Components Cement Water Fine Aggregate Coarse Aggregate Fundamentals of Range in Proportions Advantages of Reducing Water Content: Increased strength Lower permeability Fundamentals of Increased resistance
More information5 Concrete Placement
5 Concrete Placement Testing Entrained Air Slump Strength Water/Cementitious Ratio Mixing Placing Concrete Compressive Test Specimens Curing De-Tensioning Multiple Strand Release Single Strand Release
More informationFEBFLOW STANDARD WATER REDUCING PLASTICISER FOR CONCRETE
FEBFLOW STANDARD WATER REDUCING PLASTICISER FOR CONCRETE Description: Febflow Standard is a powerful plasticiser, which disperses and deflocculates the cement particles within a concrete mix. It can be
More informationThe hardening is caused by chemical action between water and the cement due to which concrete grows stronger with age.
CONCRETE MIX DESIGN INTRODUCTION Concrete is obtained by mixing cement, fine aggregate, coarse aggregate, water and admixtures in required proportions. The mixture when placed in forms and allowed to cure
More informationCONCRETE MATERIALS. Overview
CONCRETE MATERIALS Technology of Material II TKS 4012 Prepared by zacoeb@ub.ac.id Overview What is concrete made of? Why do we use concrete? How do we use concrete? Where is concrete used? Why is concrete
More informationApplication and properties of Fiber Reinforced Concrete
Application and properties of Fiber Reinforced Concrete Pallavi Jakate 1, Saurabh Asange 2 1Research Scholar, Dept. of Civil Engineering, Technocrat Institute of Technology (TIT) Excellence, MP, India.
More informationFresh Concrete: Batching, Mixing, Transportation, Placing. Lecture No. 07
Fresh Concrete: Batching, Mixing, Transportation, Placing Lecture No. 07 Compaction of Concrete Compaction of concrete is the process adopted for expelling the entrapped air from the concrete. In the process
More informationUNIVERSITY SERVICES ANNEX James Madison University Harrisonburg, Virginia State Project Code: Architect s Project Number:
SECTION 321610 - CURBING PART 1 - GENERAL 1.1 DESCRIPTION A. This Section specifies requirements for furnishing and installing all types of curbing including the following: granite curb, concrete and bituminous
More informationTECHNICAL INFORMATION SCREED
TECHNICAL DATA SHEET SCREED Ver Nov 2015 TECHNICAL INFORMATION SCREED Product Data Sheet No. 110/01 INTRODUCTION Tarmac ready-to-use cement sand levelling screed is a correctly proportioned factory produced
More informationCONCRETE TECHNOLOGY LABORATORY
CONCRETE TECHNOLOGY LABORATORY DEPARTMENT OF CIVIL ENGINEERING CHULALONGKORN UNIVERSITY Tested by... ID No.... Date... Graded by... TEST No. C-4 MIXING, CASTING AND PROPERTIES OF FRESH CONCRETE (I) Part
More informationLime Cement Aggregates Mortar
Lime Cement Aggregates Mortar Lime Preparation of lime mortar Cement Ingredients Manufacturing process Types and Grades Properties of cement and Cement mortar Hydration Compressive strength Tensile strength
More informationA. Section includes cast-in-place concrete, including reinforcement, concrete materials, mixture design, placement procedures, and finishes.
SECTION 033053 - CONCRETE PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections,
More informationINSTITUTE OF CONCRETE TECHNOLOGY CONCRETE TECHNOLOGY & CONSTRUCTION Stage 2: GENERAL PRINCIPLES Learning objectives
INSTITUTE OF CONCRETE TECHNOLOGY CONCRETE TECHNOLOGY & CONSTRUCTION Stage 2: GENERAL PRINCIPLES Learning objectives 2.00 Introduction to the course 2.00.01 Outline the aims, objectives and content of the
More informationCN7001-ADVANCED CONCRETE TECHNOLOGY QUESTION BANK
CN7001-ADVANCED CONCRETE TECHNOLOGY QUESTION BANK Unit I CONCRETE MAKING MATERIALS 1. What is the common classification of aggregates? 2. What is Light weight aggregates? 3. Define Heavy weight aggregates.
More informationTACAMP 2014 CONCRETE. Presented by Rick Wheeler
TACAMP 2014 CONCRETE Presented by Rick Wheeler HISTORY OF CONCRETE 2000 years and still working Concrete is the longest lasting Man-made construction material The Roman Pantheon is the largest (43.4m dia.)
More informationMix Design and Pumped Concrete
Mix Design and Pumped Concrete A simple method of concrete mix design for pumpable concrete based on an estimated weight of the concrete per unit volume is described in the paper. The tables and figures
More informationUltra High Performance Concrete- Next Generation Concrete
Ultra High Performance Concrete- Next Generation Concrete Vaibhav Dixit Bachelor of Engineering- Civil Engineering Acropolis Institute of Technology & Research, Indore, (M.P), India +91-9179883921 Email
More informationResidential Concrete 101
PHRC Webinar Series Tuesday, December 13th @ 1pm Residential Concrete 101 Christopher Hine Pennsylvania Housing Research Center 219 Sackett Building University Park, PA 16802 P: 814 865 2341 phrc@psu.edu
More informationSECTION MISCELLANEOUS CAST-IN-PLACE CONCRETE
SECTION 033053- MISCELLANEOUS CAST-IN-PLACE CONCRETE PART 1- GENERAL 1.1 RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01
More informationThe SQUEAK. Program. Concrete Construction Activity Kit. Secondary Schools & QUT Engineering Activity Kits
The SQUEAK Program Concrete Construction Activity Kit Secondary Schools & QUT Engineering Activity Kits -CONCRETE CONSTRUCTION- OBJECTIVES: Students will be introduced to the basic engineering principles
More informationMETHOD OF TEST FOR EVALUATION OF SUPERPLASTICIZING ADMIXTURES FOR CONCRETE
Laboratory Testing Manual Date: 02 07 01 Page 1 of 7 METHOD OF TEST FOR EVALUATION OF SUPERPLASTICIZING ADMIXTURES FOR CONCRETE 1. SCOPE This method covers physical requirements and qualification tests
More informationCHAPTER 6 POLYPROPYLENE FIBRE REINFORCED GEOPOLYMER CONCRETE COMPOSITES
113 CHAPTER 6 POLYPROPYLENE FIBRE REINFORCED GEOPOLYMER CONCRETE COMPOSITES 6.1 GENERAL This chapter describes the effect of addition of polypropylene fibres on the strength characteristics of geopolymer
More informationDUAL EXPANSION. facilitate casting and ensure the total filling of voids even in tight or complex spaces and when working on large surfaces.
Fluid expansive mortar for precision anchoring of machinery and structural elements LAYER THICKNESS FROM 1 TO 10 CM REFURBISHMENT and PROTECTION Line Expansive cement-based mortar for anchoring and grouting
More informationPumice Pozz vs. Fly Ash
Pumice Pozz vs. Fly Ash Extensive ASTM-standard Research Quantifies Pumice as the Ideal Replacement for Fly Ash in Concrete IN EACH AND EVERY ONE of the concrete performance categories that matter, clean,
More informationAPPENDIX 5: CONSTRUCTION CHECKLISTS
APPENDIX 5: CONSTRUCTION CHECKLISTS This appendix presents the construction checklists for the various retaining wall mitigation strategies: 10.1 Void Fill 10.2 Surface Bond Overlay 10.3 Reinforced Overlay
More informationMix Design For Concrete Roads As Per IRC:
Mix Design For Concrete Roads As Per IRC:15-2011 ABSTRACT: The stresses induced in concrete pavements are mainly flexural. Therefore flexural strength is more often specified than compressive strength
More informationCOMPATIBILITY OF SUPERPLASTICIZER BS FUTURA PCX 107 WITH PPC CEMENT FOR M35 GRADE OF CONCRETE
COMPATIBILITY OF SUPERPLASTICIZER BS FUTURA PCX 107 WITH PPC CEMENT FOR M35 GRADE OF CONCRETE Amandeep Singh¹, Dr Aradhana Mehta² 1B.Tech Student, CCET, Chandigarh 2Assistant Professor, Department of Civil
More informationNelson Testing Laboratories
in Elmhurst, Illinois, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies
More informationMix Design For Concrete Roads As Per IRC
Mix Design For Concrete Roads As Per IRC-15-2002 ABSTRACT: The stresses induced in concrete pavements are mainly flexural. Therefore flexural strength is more often specified than compressive strength
More informationB BASF MasterFlow MasterFlow MasterFlow MasterFlow C CGM Grout...8
B BASF MasterFlow 100...2 MasterFlow 648...5 MasterFlow 885...4 MasterFlow 928...3 C CGM...8 F FIVE STAR GROUT...7 G GROUT Five Star Non Shrink...7 General Purpose...6 Masterflow 100...2 Masterflow 648...5
More informationREQUIREMENTS FOR CONCRETE MIX DESIGN
REQUIREMENTS FOR CONCRETE MIX DESIGN Requirements of concrete mix design should be known before calculations for concrete mix. Mix design is done in the laboratory and samples from each mix designed is
More informationEffect of Aggregate Size and Gradation on Compressive Strength of Normal Strength Concrete for Rigid Pavement
American Journal of Engineering Research (AJER) e-issn: 2320-0847 p-issn : 2320-0936 Volume-6, Issue-9, pp-112-116 www.ajer.org Research Paper Open Access Effect of Aggregate Size and Gradation on Compressive
More informationConcrete Framing: Slab on Grade
Concrete Framing: Slab on Grade Casting a Concrete Slab on Grade Concrete Slabs Subgrade Preparation Drainage Layer Slab Edges Vapor Retarder (Moisture Barrier) Reinforcing Pouring the Concrete Finishing
More informationStudy on Effect of Self-Compacting Concrete with Partial Replacement of Mineral Admixtures Using Quarry Dust
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, www.ijerd.com Volume 11, Issue 11 (November 2015), PP.01-07 Study on Effect of Self-Compacting Concrete
More informationEFFECT OF RE-VIBRATION ON COMPRESSIVE STRENGTH OF CONCRETE
ASIAN JOURNAL OF CIVIL ENGINEERING (BUILDING AND HOUSING) VOL. 9, NO. 3 (2008) PAGES 291-301 EFFECT OF RE-VIBRATION ON COMPRESSIVE STRENGTH OF CONCRETE M.V. Krishna Rao a, P. Rathish Kumar b and N.V.R.C
More informationCONCRETE WORK CONCRETE WORK. Underground Electric Distribution Standards I. SCOPE APPLICABLE STANDARDS
Underground Electric Distribution Standards I. SCOPE This section includes the standards for concrete, reinforcing steel, formwork, concrete placement, curing, and construction joints. Concrete work for
More informationSECTION CAST-IN-PLACE CONCRETE
SECTION 03300 CAST-IN-PLACE CONCRETE PART 1 GENERAL 1.01 SECTION INCLUDES A. The Contractor shall furnish all work and materials, including cement, sand and coarse aggregate, water, admixtures, curing
More informationParagraph Description Page No General Materials Concrete Masonry Work Altitude Valve Vault Cover 25-4
City of Columbia Engineering Regulations PART 25: SPECIFICATIONS FOR ALTITUDE VALVE VAULT Table of Contents Paragraph Description Page No. 25.1 General 25-1 25.2 Materials 25-1 25.3 Concrete Masonry Work
More informationDownloaded from Downloaded from /1
VI SEMESTER FINAL EXAMINATION-2003 IS 2000 is allowed. product (power s assumption), calculate the capillary porosity in cement paste in % after 7 days if the water/cement ratio is 0.05. [5] Q. [1] [a]
More informationCHAPTER 4 GEOPOLYMER CONCRETE COMPOSITES
59 CHAPTER 4 GEOPOLYMER CONCRETE COMPOSITES 4.1 GENERAL From the detailed experimental investigations on fly ash based Geopolymer concrete (GPC) given in chapter 3 the following two limitations have been
More informationSECTION CAST IN PLACE CONCRETE FOR FLOOR SLABS ON GRADE THAT WILL RECEIVE SEMI-PERMEABLE OR IMPERMEABLE FLOOR FINISHES
GUIDE SPECIFICATION SECTION CAST IN PLACE CONCRETE FOR FLOOR SLABS ON GRADE THAT WILL RECEIVE SEMI-PERMEABLE OR IMPERMEABLE FLOOR FINISHES PART 1 - SCOPE 1.01 WORK INCLUDED: 1.1.1 This guide covers the
More informationGood Construction Practices Part I
Good Construction Practices Part I This report is solely for the internal use. No part of it may be circulated, quoted, or reproduced for distribution outside the company organization without prior written
More informationChemical Admixtures for Concrete. ACCELERATORS Özge Andiç Çakır, PhD
Chemical Admixtures for Concrete ACCELERATORS Özge Andiç Çakır, PhD Accelerators: Definition An accelerating admixture is a material that is added to concrete for reducing the time of setting and accelerating
More informationPolymer bonding aid and mortar additive bonding agent for old and new concrete. Test method Typical result Control. Compressive strength (BS6319,Pt2)
Techno Bond SBR Polymer bonding aid and mortar additive bonding agent for old and new concrete Uses For improving the physical properties of cementations mixes. Typical uses include, but are not limited
More informationAn Investigation of Steel Fiber Reinforced Concrete with Fly Ash
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) ISSN: 2278-1684 Volume 4, Issue 5 (Nov-Dec. 2012), PP 01-05 An Investigation of Steel Fiber Reinforced Concrete with Fly Ash Khadake S.N. 1,
More informationLecture 6&7: Construction Concrete
Arab Academy for Science, Technology & Maritime Transport Colleague of Engineering & Technology Construction & Building Engineering CB 523 Methods and Equipment for Construction 1 Lecture 6&7: Construction
More informationPOZZOLANIC CEMENT Fly ash based (CEM IV/B-V 32,5N) Properties & Applications
PROPERTIES & APPLICATIONS POZZOLANIC PAGE 1 OF 7 Uniclass L621 CI/SfB March 2014 Yq2 POZZOLANIC CEMENT Fly ash based (CEM IV/B-V 32,5N) Properties & Applications PROPERTIES & APPLICATIONS CEMENT PROPERTIES
More informationWater Control Structures Selected Design Guidelines Alberta Environment Page 24-1
Alberta Environment Page 24-1 24.0 CONSTRUCTION CONSIDERATIONS 24.1 Care of Water Typically, the design, construction, maintenance and removal of temporary measures for the care of water during construction
More informationEffect of Different Types of Coarse Aggregates on Physical Properties of Mostly Used Grades M20, M25, M30 of Concrete
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-684,p-ISSN: 2320-334X, Volume 4, Issue Ver. II (Jan. - Feb. 207), PP 46-5 www.iosrjournals.org Effect of Different Types of Coarse
More informationProperties of Concrete. Properties of Concrete 1
Properties of Concrete Properties of Concrete 1 CE-203PROPERTIES OF Introduction CONCRETE Batching, Mixing, transportation and placing of concrete, Properties of fresh and hardened concrete, testing of
More informationTroubleshooting Aggregates and Admixtures
Troubleshooting Aggregates and Admixtures Portland Cement Association Founded in 1916 Headquarters: Skokie, Illinois USA References Design and Control of Concrete Mixtures, EB001.16, PCA 2016 CH 8 Aggregates
More informationBRICKWORK 3.5 BRICKWORK 1 GENERAL
BRICKWORK 1 GENERAL 1.1 INSPECTION Notice Give sufficient notice so that inspection may be made of the following: - Set out of brickwork to lintels, arches and other architectural features. - Damp-proof
More informationDETERMINATION OF WORKABILITY OF FRESH CONCRETE BY SLUMP TEST
DETERMINATION OF WORKABILITY OF FRESH CONCRETE BY SLUMP TEST Aim: To determine the workability of concrete by Slump test as per IS : 1199-1959 Mould - in the form of the frustum of a cone having the following
More informationKinds of Mortars. Mortar. Specifying Mortar. Proportion Specifications. M a S o N w O r K. Specification for Mortar Cement
ASTM C9 ASTM C44 ASTM C270 ASTM C780 ASTM C329 ASTM C586 Mortar Specification for Masonry Specification for Aggregate for Masonry Mortar Specification for Mortar for Unit Masonry Method for Preconstruction
More informationIJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online):
IJSRD - International Journal for Scientific Research & Development Vol. 4, Issue 05, 2016 ISSN (online): 2321-0613 To Study the Behavior of Concrete with and without When Subjected To Sulphate Attack
More informationECO PHOENIX CEMENT (fly ash based) BS EN CEM IV/B-V 32,5N Properties & Applications
PROPERTIES & APPLICATIONS ECO PHOENIX PAGE 1 OF 7 Uniclass L621 CI/SfB March 2014 Yq2 ECO PHOENIX CEMENT (fly ash based) BS EN CEM IV/B-V 32,5N Properties & Applications PROPERTIES & APPLICATIONS CEMENT
More informationSelf-Compacting Concrete - Procedure and Mix Design
Self-Compacting Concrete - Procedure and Mix Design CHAUTHA RAM 1, RAVI KUMAR 2 1,2Structural Engineering, Kurukshetra University, Kurukshetra, Haryana, India ---------------------------------------------------------------------***----------------------------------------------------------------------
More informationKrystol Internal Membrane (KIM ) Guidelines and Procedures - NZ
Krystol Internal Membrane (KIM ) Guidelines and Procedures - NZ The use of Krystol Internal Membrane in Concrete Structures within New Zealand Product: The Krystol Waterproofing System consists of products
More informationSTUDY ON MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE USING COCONUT SHELL AS COARSE AGGREGATE
Int. J. Chem. Sci.: 14(S1), 2016, 247-256 ISSN 0972-768X www.sadgurupublications.com STUDY ON MECHANICAL PROPERTIES OF HIGH STRENGTH CONCRETE USING COCONUT SHELL AS COARSE AGGREGATE M. SANTHOSH KUMAR a,
More informationThe Mechanical Properties of High Strength Concrete for Box Girder Bridge Deck in Malaysia
Adnan et al. Concrete Research Letters Vol. 1(1) 2010 www.crl.issres.net Vol. 1 (1) March 2010 The Mechanical Properties of High Strength Concrete for Box Girder Bridge Deck in Malaysia Azlan Adnan 1,
More informationChapter VI Mix Design of Concrete
CIV415 CONCRETE TECHNOLOGY Chapter VI Mix Design of Concrete Assist.Prof.Dr. Mert Yücel YARDIMCI Advanced Concrete Technology - Zongjun Li 1 Mix Design Mix design can be defined as the processes of selecting
More informationCHAPTER 5 FRESH AND HARDENED PROPERTIES OF CONCRETE WITH MANUFACTURED SAND
61 CHAPTER 5 FRESH AND HARDENED PROPERTIES OF CONCRETE WITH MANUFACTURED SAND 5.1 GENERAL The material properties, mix design of M 20, M 30 and M 40 grades of concrete were discussed in the previous chapter.
More informationTECHNICAL DATA SHEET SIKA RAPID REPAIR MORTAR 25KG
TECHNICAL DATA SHEET SIKA RAPID REPAIR MORTAR 25KG Sika Rapid Repair Mortar is a ready to use [just add water], quick setting mortar, based on special cements. It contains selected aggregates and admixtures
More informationSPECIFICATIONS FOR FABRICATION OF PRECAST CONCRETE PANELS
SPECIFICATIONS FOR FABRICATION OF PRECAST CONCRETE PANELS 1.0 DESCRIPTION The Work shall consist of:.1 The supply of materials and the fabrication of precast concrete panels as shown and described on the
More informationAdmixtures CIVL
Admixtures CIVL 3137 88 Admixtures admixture (n.) any material other than water, aggregates, hydraulic cement and fiber reinforcement, used as an ingredient of concrete or mortar, and added to the batch
More information.1 Concrete mix shall be in accordance with the following:.1 The average of all tests shall exceed 25 MPa.
Page 1 1.0 CONCRETE 1.1 CONCRETE MIX.1 Concrete mix shall be in accordance with the following: Minimum 28 Day Strength 25 MPa* Designated Aggregate Size.maximum 25 mm (1 inch) Slump. 25-75 mm (1-3 inches)
More informationStructural System. Design Considerations Concrete Structures. Materials Formwork Labor Time
Structural System Understand Behavior of Elements in System & Load Transfer through Structure Joists and Beams Columns (and Walls) Beam-Column Joints One- or Two-way slabs Foundation (Footings, Mats) Design
More informationREINFORCED CONCRETE MASONRY SECTION
SECTION 04 22 02 - REINFORCED CONCRETE MASONRY PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 01 Specification
More informationDusit Roongsang, P.E. Presented at. PNWS AWWA Conference Bellevue, WA May 1, 2015
Dusit Roongsang, P.E. Presented at PNWS AWWA Conference Bellevue, WA May 1, 2015 Not waterproof structures Leakage rate is suitable for intended use Contain water Prevent contamination of contents Prevent
More informationReinforced Concrete. S.Sreenath 17 May 2016
Reinforced Concrete S.Sreenath 17 May 2016 Curing of Concrete Hardening of concrete is dependent on the presence of water. During mixing normally more water for full hydration. It is always necessary to
More informationA-4 TEST DATA FOR MATERIALS v) Cement used : OPC 43 grade confirming to IS 8112 w) Specific gravity of cement : 3.15 x) Specific gravity of
A-2 SELECTION OF WATER CEMENT RATIO From Table 5 of IS:456-2000, maximum water cement ratio = 0.50 (Moderate exposure) Based on experience adopt water cement ratio as 0.45 as the cement is 53 grade 0.45
More informationLaboratory Manual. Concrete and aggregate. Content
Laboratory Manual Concrete and aggregate Content Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Trial Mix Slump Density of Compacted Fresh Concrete Making of
More informationA. HIGH-STRENGTH CONCRETE (HSC)
EFFECTS OF SILICA FUME ON PROPERTIES OF HIGH-STRENGTH CONCRETE Nasratullah Amarkhail Graduate School of Science and Technology, Department of Architecture and Building Engineering Kumamoto University Kumamoto
More informationCONSTRUCTION AND DEMOLISION WASTE AS A REPLACEMENT OF FINE AGGREGATE IN CONCRETE
CONSTRUCTION AND DEMOLISION WASTE AS A REPLACEMENT OF FINE AGGREGATE IN CONCRETE K Radhika 1, A Bramhini 2 1 PG Scholar, Dept of Civil Engineering, KMM Institute of Technology, Tirupati, Andhra pradesh,
More informationStudy and Analysis of High Performance Concrete and Estimation of Concrete Strength
Study and Analysis of High Performance Concrete and Estimation of Concrete Strength 1 Swapnil Bhoir, 2 Nilam Adsul, 3 Shrikant Charhate 1,2,3 Dept. of Civil Engineering Abstract --The present day world
More informationSECTION CONCRETE REPAIR AND PATCHING
SECTION 03937 CONCRETE REPAIR AND PATCHING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General Conditions, General Specifications, and Division
More informationChapter 6: Admixtures for Concrete
Chapter 6: Admixtures for Concrete Definition A material other than water, aggregates and hydraulic cement that is used as an ingredient in concrete or mortar and is added to the batch immediately before
More informationENGINEERING UTILIZATION OF MARBLE SLURRY
INTERNATIONAL International Journal of Civil JOURNAL Engineering OF and Technology CIVIL ENGINEERING (IJCIET), ISSN 0976 AND 6308 (Print), ISSN 0976 6316(Online) TECHNOLOGY Volume 3, Issue 2, (IJCIET)
More information1 Exam Prep Guide to Shotcrete Questions
1 Exam Prep Guide to Shotcrete Questions 1. According to Guide to Shotcrete, another name used for dry mix shotcrete is: A. batching B. gunite C. shotcrete D. slugging 2. Shotcrete in which all of the
More informationPre-Construction Conference for Concrete Construction
Pre-Construction Conference for Concrete Construction Alabama Concrete Industries Association www.alconcrete.org Johnny Canfield, Technical Director 1 National Ready Mixed Concrete Association CLP 32 Concrete
More informationAdmixtures CIVL
Admixtures CIVL 3137 1 Admixtures admixture (n.) any material other than water, aggregates, hydraulic cement and fiber reinforcement, used as an ingredient of concrete or mortar, and added to the batch
More informationSUITABILITY OF SINTERED FLY ASH LIGHTWEIGHT AGGREGATE IN STRUCTURAL CONCRETE
ABSTRACT SUITABILITY OF SINTERED FLY ASH LIGHTWEIGHT AGGREGATE IN STRUCTURAL CONCRETE V V Arora, P N Ojha & Mantu Gupta National Council for Cement and Building Materials, India The paper presents the
More informationTechnical Manual Section 8 Rapid Drying Lightweight Screeds
Uniclass L5371:P224 EPIC E451:X223 CI/SfB (-A) (23) Pq7 Technical Manual Section 8 Rapid Drying Lightweight Screeds Introduction 2 General 2 Application 3 Density 5 Hardening and drying times 5 Thermal
More informationAPPLICATION OF SELF-CONSOLIDATING CONCRETE FOR BRIDGE REPAIR
APPLICATION OF SELF-CONSOLIDATING CONCRETE FOR BRIDGE REPAIR Xian-feng Wang The Sixth Construction Group of Shanxi Province, 030024, Shanxi, P. R. China Abstract: A highway bridge in province Shanxi was
More informationCity of Brandon Division 2 Standard Construction Specifications Section January 2007 (Revision 2) Page 1 of 21 CONCRETE CONSTRUCTION
January 2007 (Revision 2) Page 1 of 21 PART 1 GENERAL 1.01 OTHER CONTRACT DOCUMENTS 1.02 DESCRIPTION OF WORK 1.03 RELATED WORK 1.04 STANDARDS 1.05 QUALITY ASSURANCE The General Conditions of the Contract,
More informationHanson Multicem is manufactured to comply with the requirements of BS EN CEM II/A-LL (Portlandlimestone cement) strength class 32,5R.
Hanson Multicem technical Data Sheet Hanson Multicem is manufactured to comply with the requirements of BS EN 197-1 CEM II/A-LL (Portlandlimestone cement) strength class 32,5R. Multicem incorporates a
More informationConstruction Specification 62 Grouted Rock Riprap
Construction Specification 62 Grouted Rock Riprap 1. Scope The work consists of furnishing, transporting, and the installation of grouted rock riprap revetments and blankets, including filter or bedding
More informationInnovative materials
Innovative materials Tailor Made Concrete Structures Walraven & Stoelhorst (eds) 2008 Taylor & Francis Group, London, ISBN 978-0-415-47535-8 The research on early age thermal cracking control of C50 HPC
More informationCementitious Concrete Repair Mortar
Product Data Sheet Edition 08/05/2012 Identification no: 02 03 02 04 005 0 000009 SikaTop -122 Cementitious Concrete Repair Mortar Construction Product Description SikaTop -122 is a two component polymer
More informationInternational Journal of Scientific & Engineering Research, Volume 7, Issue 9, September ISSN
International Journal of Scientific & Engineering Research, Volume 7, Issue 9, September-2016 363 An Experimental study on self compacting concrete Hemanvitha Bobba,U.V.Narayan Rao Abstract - Self compacting
More informationFlood Testing Laboratories, Inc.
in Chicago, Illinois, USA has demonstrated proficiency for the testing of construction materials and has conformed to the requirements established in AASHTO R 18 and the AASHTO Accreditation policies established
More information