TACAMP 2014 CONCRETE. Presented by Rick Wheeler
|
|
- Toby Manning
- 5 years ago
- Views:
Transcription
1 TACAMP 2014 CONCRETE Presented by Rick Wheeler
2 HISTORY OF CONCRETE
3 2000 years and still working
4 Concrete is the longest lasting Man-made construction material The Roman Pantheon is the largest (43.4m dia.) unreinforced solid concrete dome in the world. It was built by the emperor Hadrian almost 2,000 years ago.
5 Components of Concrete Components of Concrete
6 Is it CEMENT or is it CONCRETE? Portland or Hydraulic cement is an ingredient in concrete just like rock, sand and water It is analogous to bread and flour
7 What is Concrete?
8 Two Major Concrete Components Cement + Water + Admixture = Paste Coarse Agg.+ Fine Agg. = Aggregates Batch & Mix =
9 Paste Component Breakdown Portland Cement ASTM C150 Types I through V Hydraulic Cements- ASTM C595 or C1157 Supplementary Cementitious Materials (SCM) Fly Ash Ground Granulated Blast-Furnace Slag (GGBFS) Microsilica (Silica Fume) Water Air voids entrapped and entrained Admixtures: Used to enhance the properties of concrete Liquid - Types A through G Mineral
10 10 Paste Cement Supplementary Cementitious Materials (SCM) Chemical Admixtures Water Air (entrained and / or entrapped)
11 WATER Potable fit to drink when in doubt, conduct setting time and strength tests Water of convenience should be kept as low as possible Free Water in aggregates is part of the mixing water and therefore must be determined.
12 Aggregate Component Major ingredient of a concrete mix 60% to 75% by volume Most common for normal wt. are: Sand Gravel Crushed Stone Governing specification is ASTM C 33
13 Fine Aggregate Sand and/or crushed stone < 5 mm (0.2 in.) F.A. content usually 35% to 45% by mass or volume of total aggregate
14 Coarse Aggregate Gravel and crushed stone 5 mm (0.2 in.) Typically between 9.5 and 37.5 mm (3/8 and 1½ in.)
15 Lightweight Aggregate (ASTM C 330) Expanded Shale Clay Slate Slag Produce structural lightweight concrete 90 to 120 lb/ft 3
16 Recycled-Concrete Aggregate
17 Batching, Mixing, and Placing
18 Typical Plant
19 Batching
20 Batching Sequence: 1 water* 2 rock 3 sand 4 cement Batching time - approximately 3-6 minutes > > > > > > > * admixtures added with up-front water. If more than one, add separately.
21 Stationary Mixing Central-mixed concrete mixed completely in a stationary mixer delivered in a truck agitator a truck mixer operating at agitating speed a non-agitating truck
22 Central Mix Materials weighed and dispensed into revolving drum.
23 Ready Mixed Concrete Shrink-mixed concrete mixed partially in a stationary mixer and completed in a truck mixer Truck-mixed concrete mixed completely in a truck mixer
24 How Does Concrete Work? Concrete does not gain strength through drying Concrete hardens through a process called HYDRATION Hydration is the chemical reaction between the cement and water in which new compounds with strength producing properties are formed. Concrete must have favorable moisture and temperature conditions to continue hydration
25 Ratios W/CM and W/C Water-cementitious materials ratio (w/cm) ratio of mass of water to mass of cementitious materials in a concrete mix expressed as a decimal. The water is exclusive to that absorbed by the aggregate. Water-cement ratio (w/c) ratio of mass of water to mass of cement in a concrete mix expressed as a decimal. Note: The lower the w/c or w/cm ratio the higher the strength and durability of concrete.
26 Advantages of Reducing Water Content: Increased strength Lower permeability Increased resistance to weathering Better bond between concrete and reinforcement Reduced drying shrinkage and cracking Less volume change from wetting and drying
27 Typical Relationships of Strength to W/C-Ratio
28 Compressive Strength is defined as the measured maximum resistance of a concrete or mortar specimen to an axial load, usually expressed in psi (Mpa) at an age of 28-days. Most general use concrete 3000 to 6000 psi (20 to 40 Mpa) High-strength concrete by definition psi or greater (70 MPa or greater)
29 Properties of Concrete Freshly Mixed (Plastic) Air Content Workability Setting Time and Rate of Hardening Hardened Strength Density Permeability Durability
30 Freshly Mixed (Plastic) Properties of Concrete
31 Air Voids Entrapped not desirable, not stable, no contribution to freeze/thaw resistance Entrained small, round and stable, barely visible
32 Why Entrain Air? Water expands 9% upon freezing Tiny, stable bubbles absorb pressure De-icers exacerbate the problem Inexpensive to add Takes up volume normally filled with aggregates and/or water Rupture strength of freezing water is approx. 30,000 psi
33 Air Entraining Benefits Freeze/Thaw resistance Workability (slump) Segregation Cohesion Bleeding Decreased material content economy Increased durability and watertightness in spite of compressive strength loss
34 Specimens Subjected to 150 Cycles of Freezing and Thawing Non-air-entrained High water-cement ratio Air-entrained Low water-cement ratio
35 Workability that property of freshly mixed concrete that determines its working characteristics i.e. the ease with which it can be mixed, placed, compacted and finished. Workability is often linked to the measured slump of concrete
36 Workability
37 Factors Affecting Workability Method and duration of transportation Quantity and characteristics of cementing materials Concrete consistency (slump) Aggregate grading, shape & surface texture % entrained air Water content Concrete & ambient air temperature Admixtures
38 Setting Time
39 Temperature has significant effect on setting characteristics On a 70 F day, the first phase of the hydration process (initial set) can occur within a few hours Each 10 F change in temperature will increase or decrease setting time by 1/3 rd of the normal value Example: 3.5 hr. set at 70 F will become 2 hrs. & 20 min. at 80 F or 4 hrs. & 40 min. at 60⁰F
40 Temperature Rules of Thumb 10 F temperature change in cement produces 1 F change in concrete 3.8 F temperature change in water produces 1 F change in concrete 1.6 F temperature change in aggregate produces 1 F change in concrete
41 Effect of Casting Temperature on Slump
42 Hardened Properties of Concrete
43 Strength Strength is the most important characteristic of concrete High strength denotes quality
44 Compressive strength is the most common test of strength Compressive Strength can be defined as the resistance of a material to break under compression It is generally expressed as pounds per square inch (psi) at an age of 28 days 7 day strengths are often estimated to be about 75% of the 28 day strength 56 and 90 day strengths are usually 10-15% greater than 28 day strengths The compressive strength that concrete achieves results from: Water-cement ratio (W/C) Lower Water-cement ratio, higher compressive strength The extent to which hydration has progressed Curing and environmental conditions Age of concrete Air entrained concrete reduces the compressive strength (more bubbles makes the concrete less dense) Low W/C High Air High Strength Low Strength
45 Strength (Continued) To determine the compressive strength, tests are conducted on concrete specimens Concrete sample cylinders (4 x 8 or 6 x 12 ) Concrete sample cylinder exploding as a result of applied load Compressive strength testing machine Concrete sample cylinder molds
46 Curing Critical to durable concrete Increases strength Decreases permeability Increases durability
47 Effect of Curing on Strength Development
48 Curing Methods Ponding Sprinkling or fog spray Wet burlap Plastic / Impervious Paper Curing compounds Insulating Blankets Forms
49 Questions???
Fundamentals 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 informationAdvanced Concrete Inspection. Presented by Rusty Boicourt, P.G. Concrete Materials Specialist Materials Testing & Inspection
Advanced Concrete Inspection Presented by Rusty Boicourt, P.G. Concrete Materials Specialist Materials Testing & Inspection Achieving the Goal Design: Control the constituents (cement, aggregate, water,
More informationConcrete. 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 informationFrequently Asked Questions (FAQ s) about Concrete Driveways
Frequently Asked Questions (FAQ s) about Concrete Driveways What type of concrete mix should be used? Your local ready mix producer and your contractor will assist you in ensuring the proper concrete mix
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 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 informationFly Ash, Slag, Silica Fume, and Natural Pozzolans
Silica Fume, and Fly Ash, Slag, Silica Fume, and Also known as Supplementary Cementing Materials (SCMs) a material that, when used in conjunction with portland cement, contributes to the properties of
More informationCONCRETE MIX DESIGN WORKSHOP FOR NORMAL CONCRETE MIXTURES 3/21/2017 1
53 th Quality Concrete School New Mexico State University Concrete Mix Design Workshop January 13 14, 2017 CONCRETE MIX DESIGN WORKSHOP FOR NORMAL CONCRETE MIXTURES 3/21/2017 1 Mix Design is the Recipe
More informationAdmixtures in Concrete
-- Admixtures in Concrete ADMXTURES A material other than water, aggregates, and hydraulic cements used as an ingredient of concrete or mortar and added to the batch immediately before or during mixing.
More informationPCC Pavement Mixture Selection
PCC Pavement Mixture Selection A. General Information Design Manual Chapter 5 - Roadway Design 5E - PCC Pavement Mixture Selection 5E-1 Concrete is basically a mixture of two components, paste and aggregates.
More informationWhat s in the Mix. Aim of this presentation Basic principles of mix design Overview of constituents Cement Aggregates Coarse Fine.
What s in The Mix What s in the Mix The aim of this lecture is not to teach you how to perform a mix design but hopefully to help you understand the mix and how it is designed. Aim of this presentation
More informationHigh-Performance Concrete
Characteristics of High- Performance s High strength High early strength High modulus of elasticity High abrasion resistance High durability and long life in severe environments Low permeability and diffusion
More informationBeyond Water-Cement Ratio and Strength. Patrick Harrison Vice President Structural Services, Inc.
Beyond Water-Cement Ratio and Strength Patrick Harrison Vice President Structural Services, Inc. High compressive strengths Low water/cementitious ratios Low slump Water Coarse Cement Fine Concrete
More informationTolerances- Section
Tolerances- Section 346-6.4 Do not add water to delivered concrete when it is within the target Range for slump 1 346-6.4 Tolerances: Meet the following tolerances from target values for plastic concrete
More informationWhat s in the Mix. Aim of this presentation Overview of mix design Overview of constituents Cement Aggregates Coarse Fine.
What s in The Mix What s in the Mix Aim of this presentation Overview of mix design Overview of constituents Cement Aggregates Coarse Fine Water SCM s Aim of a Mix Design Mix Design is a Scientific Art
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 informationHANDS-ON TRAINING: MATERIALS AND MIX DESIGN
Fundamentals of Concrete HANDS-ON TRAINING: MATERIALS AND MIX DESIGN LEARNING OBJECTIVES Upon completing this program, the participant should be able to: 1. Identify the common materials used for concrete
More informationIS : Dr. S. RAVIRAJ
CONCRETE MIX PROPORTIONING IS 10262 : 2009 Dr. S. RAVIRAJ Professor of Civil Engineering JSS Science and Technology University S.J. College of Engineering Mysuru 570 006 ravirajs@sjce.ac.in 1 Introduction
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 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 informationExperimental Case Study Demonstrating Advantages of Performance Specifications Karthik Obla 1 Fernando Rodriguez 2 and Soliman Ben Barka 3
Experimental Case Study Demonstrating Advantages of Performance Specifications Karthik Obla 1 Fernando Rodriguez 2 and Soliman Ben Barka 3 NRMCA is working on an initiative to evolve specifications from
More informationPerformance Engineered Mixtures So what
Performance Engineered Mixtures So what 1 An Emphasis on Durability What do I want? How do I get what I want with what I have? How do I know? What Do We Want? The pavement owner wants: Strong enough Crack
More informationNRMCA is working on. Experimental Case Study Demonstrates Advantages of Performance Specifications
Experimental Case Study Demonstrates Advantages of Performance Specifications By Karthik Obla, Director of Research and Materials Engineering Fernando Rodriguez, Laboratory Manager and Soliman Ben Barka,
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 informationMATERIAL SPECIFICATION FOR CONCRETE - MATERIALS AND PRODUCTION
ONTARIO PROVINCIAL STANDARD SPECIFICATION OPSS.MUNI 1350 NOVEMBER 2017 MATERIAL SPECIFICATION FOR CONCRETE - MATERIALS AND PRODUCTION TABLE OF CONTENTS 1350.01 SCOPE 1350.02 REFERENCES 1350.03 DEFINITIONS
More informationMATERIAL SPECIFICATION FOR CONCRETE - MATERIALS AND PRODUCTION
ONTARIO PROVINCIAL STANDARD SPECIFICATION METRIC OPSS.MUNI 1350 NOVEMBER 2008 MATERIAL SPECIFICATION FOR CONCRETE - MATERIALS AND PRODUCTION TABLE OF CONTENTS 1350.01 SCOPE 1350.02 REFERENCES 1350.03 DEFINITIONS
More informationPERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE SUPERSTRUCTURE (Tollway)
PERFORMANCE-RELATED SPECIAL PROVISION FOR HIGH PERFORMANCE CONCRETE MIX DESIGNS FOR CONCRETE SUPERSTRUCTURE (Tollway) Effective: October 12, 2012 Revised: June 14, 2013 DESCRIPTION This work consists of
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 informationAustralian Society for Concrete Pavements Concrete Mix Design Principles
Australian Society for Concrete Pavements Concrete Mix Design Principles Michael van Koeverden Good Concrete Mix Design: Understand requirements of the concrete. Identify if an existing mix may be suitable
More informationAnalysis on Mix Design of High Strength Concrete (M90)
Analysis on Mix Design of High Strength Concrete (M90) CHAITANYA RAJ 1, DIVYANSHI TYAGI 2, GAURAV BUDHANI 3 B.TECH STUDENT 3rd Year Department of Civil Engineering ABES Engineering College Ghaziabad ---------------------------------------------------------------------***---------------------------------------------------------------------
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 informationDIVISION 7 STRUCTURES
DIVISION 7 STRUCTURES Section 701. PORTLAND CEMENT CONCRETE FOR STRUCTURES 701.01 Description. Proportion structural concrete according to this section for the various grades of concrete required on the
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 informationSTUDY OF MIX DESIGN FOR HIGH PERFORMANCE CONCRETE
STUDY OF MIX DESIGN FOR HIGH PERFORMANCE CONCRETE SACHIN PATIL E-mail: jay40308@rediffmail.com Abstract In present research work a thorough study and analysis of Mix Design of High Performance Concrete
More informationAdmixtures in Concrete
Admixtures in Concrete ADMIXTURES A material other than water, aggregates, and hydraulic cements used as an ingredient of concrete or mortar and added to the batch immediately before or during mixing.
More informationMICHIGAN CONCRETE ASSOCIATION GUIDE FOR COLD WEATHER CONCRETING
MICHIGAN CONCRETE ASSOCIATION GUIDE FOR COLD WEATHER CONCRETING MCA:SMW 1 of 6 10-25-11 For the purposes of this document and the MCA Special Provision for Cold Weather Concreting, cold weather is determined
More informationATLANTIC TESTING LABORATORIES Hot Weather Concreting
ATLANTIC TESTING LABORATORIES Hot Weather Concreting ACI 305R ACI 305.1 CNY Engineering Expo November 11, 2013 Topics of Discussion 5 Essentials of Quality Concrete Hot Weather Defined by ACI Potential
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 informationDesigning and Proportioning Normal Concrete Mixtures
HOME PAGE CHAPTER 9 Designing and Proportioning Normal Concrete Mixtures The process of determining required and specifiable characteristics of a concrete mixture is called mix design. Characteristics
More informationINVESTIGATION INTO THE USE OF MICROSILICA AND FLY ASH IN SELF COMPACTING CONCRETE
www.arpapress.com/volumes/vol24issue2/ijrras_24_2_03.pdf INVESTIGATION INTO THE USE OF MICROSILICA AND FLY ASH IN SELF COMPACTING CONCRETE Victor Ajileye Faseyemi Technical Manager Al Andalus Factory for
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 informationSECTION CAST-IN-PLACE CONCRETE FOR UTILITIES
FOR UTILITIES PART 1 - GENERAL 1.1 SECTION INCLUDES A. Cast-in-place concrete for tunnel walls and slabs; steam manholes, chases, precast items and other miscellaneous structures; control, expansion and
More informationSECTION PORTLAND CEMENT CONCRETE PAVEMENT. All subsurface utilities must be inspected, tested, and accepted prior to any paving.
SECTION PORTLAND CEMENT CONCRETE PAVEMENT 1. DESCRIPTION This specification shall govern for the construction of Portland cement concrete pavement on a prepared subgrade or base course, in accordance with
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 informationCold Weather Concreting
Cold Weather Concreting January 9 & 10, 2019 Nebraska Concrete & Aggregate Association 2019 Quality Concrete Conference Cold Weather Concrete Requires Experience Cold Weather ACI 306R-16 Committee Definition
More informationCourse Concrete Technology Course Code Theory Term Work POE Total Max. Marks Contact Hours/ week
Course Concrete Technology Course Code 43588 Examination Scheme Theory Term Work POE Total Max. Marks 100 50 -- 150 Contact Hours/ week 3 2 -- 5 Prepared by Mr. C.S. Patil / Mr. S.P. Patil Date Prerequisites
More informationPennoni Associates, Inc.
in Bethlehem, Pennsylvania, 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 informationThe Effect of Local Available Materials on the Properties of Concrete
International Journal of Life Science and Engineering Vol. 1, No. 4, 2015, pp. 140-144 http://www.aiscience.org/journal/ijlse The Effect of Local Available Materials on the Properties of Concrete Salahaldein
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 informationPCC Pavement Mix Proportioning and Strength
Supplemental Technical Specification for PCC Pavement Mix Proportioning and Strength SCDOT Designation: SC-M-501 (03/08) 1. SCOPE 1.1. This supplemental technical specification describes materials and
More informationIntroduction to Masonry Materials and Assemblages
2:15 PM 4:15 PM Bennett Banting Introduction to Masonry Materials and Assemblages Lecture Outline 1. Overview (5) 2. Masonry Materials a) Concrete Block (20) b) Mortar (15) c) Grout (15) 3. Masonry Assemblages
More informationKANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, 2015 EDITION
Sheet 1 of 5 KANSAS DEPARTMENT OF TRANSPORTATION SPECIAL PROVISION TO THE STANDARD SPECIFICATIONS, 2015 EDITION Delete SECTION 403 and replace with the following: SECTION 403 ON GRADE CONCRETE 403.1 DESCRIPTION
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 informationCHAPTER-3 MIX DESIGN AND STRENGTH PROPERTIES OF GPC
65 CHAPTER-3 MIX DESIGN AND STRENGTH PROPERTIES OF GPC 3.0 IMPORTANCE OF MIX DESIGN Many parameters are involved in the production of GPC, out of which alkaline liquid mineral admixtures ratio and superplasticiser
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 informationChapter 7. Concrete Mix Design and Fresh Concrete Properties
Chapter 7 Concrete Mix Design and Fresh Concrete Properties 7.1 GENERAL This chapter describes the conceptual concrete mix design procedures adopted for different lightweight s produced in this study.
More informationLADOTD Concrete Specifications A Glimpse into the Near Future. Zach Collier, E.I. Concrete Research Engineer
LADOTD Concrete Specifications A Glimpse into the Near Future Zach Collier, E.I. Concrete Research Engineer Outline What this presentation is An overview of new specifications Major step forward What it
More informationCONCRETE MIX DESIGN. Weight Method Absolute Volume Method
CONCRETE MIX DESIGN Weight Method Absolute Volume Method Steps of the methods 1. Evaluate strength requirements. 2. Determine the water-cement ratio required. 3. Evaluate coarse aggregate requirements.
More informationGlossary of Terms - A -
Glossary of Terms - A - AASHTO - American Association of State Highway and Transportation Officials. ABRASION - A test for determination of resistance of aggregate to abrasion conducted as per AASHTO Test
More informationINTEGRALLY COLORED CONCRETE [DECORATIVE CONCRETE PAVING]
Note to Specifier: The Admixture Systems business of BASF Corporation previously conducted business as Degussa Admixtures, Inc. and Master Builders, Inc. BASF has launched the Master Builders Solutions
More informationExperimental Case Study Demonstrating Advantages of Performance Specifications
RMC Research Foundation Experimental Case Study Demonstrating Advantages of Performance Specifications Prepared by: Karthik Obla, PhD, PE Colin Lobo, PhD, PE Experimental Case Study Demonstrating Advantages
More informationQUALITIY OF RECYCLED CONCRETE MADE BY A TRUCK MIXER
QUALITIY OF RECYCLED CONCRETE MADE BY A TRUCK MIXER Toyoharu Nawa 1), Kenta Tsuruya 1), Hiroshi Hashida 2) 1) Hokkaido University, Graduate School of Engineering, Japan 2) Shimizu Corporation, Institute
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 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 informationChallenges and Opportunities
Challenges and Opportunities Recycled Materials in Ready Mixed Concrete Concrete Sustainability Conference April 2010 Colin Lobo, Ph.D., P.E. 2010 Concrete Sustainability Conference 1 National Ready Mixed
More informationNational Ready Mixed Concrete Association 900 Spring Street Silver Spring, MD 20910
National Ready Mixed Concrete Association 900 Spring Street Silver Spring, MD 20910 (301) 587-1400 Fax (301) 585-4219 URL: www.nrmca.org E-mail: trainingmgr@nrmca.org These materials were developed for
More informationAggregates for Use In Concrete
Aggregates for Use In Concrete Learning Objective 2 Develop a basic understanding of aggregates and aggregate properties. 1 3 Aggregates Fine Consists of natural sand, manufactured sand or crushed stone
More informationEvaluation of the Compressive Strength and Rapid Chloride Permeability of High Replacement Ternary Mixtures
Rupnow Evaluation of the Compressive Strength and Rapid Chloride Permeability of High Replacement Ternary Mixtures Submission Date: -- By: T. D. Rupnow Tyson D. Rupnow (Corresponding Author) Louisiana
More informationTruck Mixer, Agitator and Front Discharge Concrete Carrier. Standards. TMMB Printing
Truck Mixer, Agitator and Front Discharge Concrete Carrier Standards TMMB 100-01 2001 Printing Your Choice is Complete New Standards provide for mixing performance evaluated truck mixers with a size for
More informationReed, Hale 1. Slag Cement Concrete for Use in Bridge Decks. August 1, Words (6 Tables = 1500 words)
Reed, Hale 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 Slag Cement Concrete for Use in Bridge Decks August 1, 2011
More information3/5/2014. Disclaimer and Waiver of Liability. Portland Cement Association. Learning Objectives. Why do concrete problems occur?
Disclaimer and Waiver of Liability T-20 Troubleshooting Concrete Mix Designs and Specifications Michelle L. Wilson, FACI Director, Education Portland Cement Association www.cement.org Tuesday, March 4,
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 informationSPECIAL PROVISION Portland Cement Concrete
1993 Specifications CSJ 0271-16-117 SPECIAL PROVISION 421---040 Portland Cement Concrete For this project, Item 421, Portland Cement Concrete, of the Standard Specifications, is hereby amended with respect
More informationDIAGNOSIS AND PREVENTION OF SURFACE IMPERFECTIONS
DIAGNOSIS AND PREVENTION OF SURFACE IMPERFECTIONS IMPERFECTION a fault, blemish, or undesirable feature. the state of being faulty or incomplete. Claude Goguen, PE, LEED AP National Precast Concrete Association
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 informationComparison of Shrinkage Strains between HPC3 and HPC4 made with gravel and limestone coarse aggregates with high and low absorptions
Comparison of Shrinkage Strains between HPC and HPC4 made with gravel and limestone coarse aggregates with high and low absorptions Objective: The objective of this study was to determine the effects of
More informationAggregates for Use In
Aggregates for Use In Concrete Learning Objective 2 Develop a basic understanding of aggregates and aggregate properties. 1 3 Aggregates Fine Consists of natural sand, manufactured sand or crushed stone
More informationAn Experimental Study on Partial Replacement of Cement by Ggbs and Natural Sand by Quarry Sand in Concrete
An Experimental Study on Partial Replacement of Cement by Ggbs and Natural Sand by Quarry Sand in Concrete Chaithra H L 1, Pramod K 2, Dr. Chandrashekar A 3 1 PG Student, Dept of Civil Engineering, K V
More informationEffect of Steam Curing on the Strength of Concrete by Using Mineral Admixtures
International Research Journal of Engineering and Technology (IRJET) e-issn: 2395-56 Effect of Steam Curing on the of Concrete by Using Mineral Admixtures Seema G N 1, Sneha S R 2, Suneel Kagi 3, Tilak
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 informationITEM 421 STRUCTURAL CONCRETE
AFTER FEBRUARY 1, 2011 ITEM 421 STRUCTURAL CONCRETE 421.1 Description. These specifications shall govern for the materials used; for the storing, measuring and handling of materials and for the proportioning
More informationConcrete Mixes of the Future
Concrete Mixes of the Future Dr Peter Taylor, PE (IL) An Emphasis on Durability What do I want? What is in it and so what? How do I get what I want with what I have? How do I know? 1 What is Concrete?
More informationSTUDY ON SILICA FUME REPLACED CONCRETE WITH SUPER PLASTICIZER
Int. J. Chem. Sci.: 14(S1), 2016, 359-366 ISSN 0972-768X www.sadgurupublications.com STUDY ON SILICA FUME REPLACED CONCRETE WITH SUPER PLASTICIZER R. M. MADHANASREE *,a, A. JOE PAULSON b and R. ANGELINE
More informationMixture Design for Durability. Dr. Peter Taylor
Mixture Design for Durability Dr. Peter Taylor An Emphasis on Durability Ability of the concrete to survive the environment to which it is exposed What can go wrong? How do we prevent it? What s new?
More informationBORAL MICRON 3 WORKABILITY, SHRINKAGE CRACK RESISTANCE, AND HIGH STRENGTH CONCRETE
Workability reduces water and high range water reducing (HRWR) admixture demand and improves concrete workability. This is in contrast to most highly reactive pozzolans. Figure 1 is a summary of the water
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 informationDesign of High Strength Concrete Mixes M60 and Investigation of its Strength Parameter
Design of High Strength Concrete Mixes and Investigation of its Strength Parameter D. Ramesh 1, S. Murali 2, S. Balaji 3 and V.Ganesan 4 1, 2, 3, 4 U.G. Student, Department of Civil Engineering, Prist
More informationMasonry Grout for Sustainable Development
Masonry Grout for Sustainable Development Sonjoy Deb, B.Tech, Civil Associate Editor The use of High Volume Fly Ash (HVFA) in construction is a solution to environmental degradation being caused by the
More informationLaboratory Assessment of Drying Shrinkage of Concretes Containing Shrinkage Reducing Agents Compared with a New Low shrinkage Concrete
Laboratory Assessment of Drying Shrinkage of Concretes Containing Shrinkage Reducing Agents Compared with a New Low shrinkage Concrete Bob Bornstein, Tony Song 2, and Valentin Mukhin 3 Manager Technical
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 informationPART 1 - GENERAL. Section Cast-in-Place Concrete 1.3 REFERENCES
CSI SECTION 32 13 13 CONCRETE PAVING 32 01 26 RIGID PAVING REHABILITATION DOT APPROVED PRODUCTS LIST OR SPECIAL PROVISIONS Very Early High Strength, Low Shrinkage, Powder Polymer-Modified Concrete Overlay
More informationAN EXPERIMENTAL STUDY ON SLAG/FLY ASH-BASED GEOPOLYMER CONCRETE
AN EXPERIMENTAL STUDY ON SLAG/FLY ASH-BASED GEOPOLYMER CONCRETE 1 CHIEN-CHUNG CHEN, 2 IVAN DIAZ, 3 KATHLEEN MENOZZI, 4 LUIS MURILLO 1,2,3,4 Purdue University Calumet, Purdue University Calumet, Purdue
More informationINDUSTRY RECOMMENDATION EXTERIOR CONCRETE FLATWORK
INDUSTRY RECOMMENDATION for EXTERIOR CONCRETE FLATWORK Prepared by Ohio Concrete Inquires regarding this document may be addressed to: Ohio Concrete 2600 Corporate Exchange Dr., Ste. 165 Columbus, OH 43231
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 informationGlossary of Terms & Measures
Glossary of Terms & Measures Glossary of Terms & Measures The intent of this Glossary is to clarify terminology used in concrete construction, The intent with special of this emphasis Glossary is on to
More informationOptimizing Concrete Mixtures for Performance and Sustainability
Optimizing Concrete Mixtures for Performance and Sustainability Prepared by: Karthik Obla, Ph.D., P.E. Colin Lobo, Ph.D., P.E. Rongjin Hong National Ready Mixed Concrete Association Silver Spring, MD Haejin
More information1 M.Selvasundari, 2 Dr.G.Ramakrishna. 2 Department of Civil Engineering, Pondicherry Engineering College, Puducherry
ISSN 24-779 MECHANICAL STUDIES ON SELF COMPACTING SELF CURING CONCRETE USING LIGHT EXPANDED CLAY AGGREGATES 1 M.Selvasundari, 2 Dr.G.Ramakrishna 1 Department of Civil Engineering, Pondicherry Engineering
More informationAdmixtures. Lecture No. 12
Admixtures Lecture No. 12 Artificial Pozzolans Fly ash Blast Furnace Slag Silica Fume Rice Husk ash Metakaoline Surkhi. Fly Ash Fly ash is finely divided residue resulting from the combustion of powdered
More information3/4/2015 COLD WEATHER CONCRETE PRACTICES SUCCESSFUL COLD WEATHER CONCRETING
COLD WEATHER CONCRETE PRACTICES CRMCA SOUTHERN MARKETING O SUCCESSFUL COLD WEATHER CONCRETING 1 2 3 ACI DEFINITION OF COLD WEATHER Cold Weather - A period when, for more than 3 consecutive days, the following
More informationInvestigation and Comparative Study of Effect of Silica Fume in Cementitious Grouts
International Journal of Scientific and Research Publications, Volume 5, Issue 5, May 2015 1 Investigation and Comparative Study of Effect of Silica Fume in Cementitious Grouts Dr. Shrikrishna A.Dhale
More information