UTILIZATION OF M-SAND AS A PARTIAL REPLACEMENT FOR FINE AGGREGATE IN CONCRETE ELEMENTS

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1 International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 10, October 2018, pp , Article ID: IJCIET_09_10_043 Available online at ISSN Print: and ISSN Online: IAEME Publication Scopus Indexed UTILIZATION OF M-SAND AS A PARTIAL REPLACEMENT FOR FINE AGGREGATE IN CONCRETE ELEMENTS Sabarish K V Vels Institute of Science, Technology & Advanced Studies, Chennai Pratheeba Paul Hindustan Institute of Technology and Science, Chennai M. Mohammed Aslam Khan S. Gowtham R. Hariharan ABSTRACT In this project the natural sand was replaced with m-sand by 50% proportions. Plain concrete needs for a minimum period of 28days curing to attain good strength. Then the optimum replacement of cement and fly ash was discussed. An experimental results shows the quality of M-sand is better than the river sand. The result from its study provided guidelines of suitable utilization of M-sand for partial replacement of fine aggregate. It was interesting to note that these methods Could be extended to optimize partial replacement of fine aggregate. From the result of experiments, it is found that 50% of M-sand can be replaced for fine aggregate to attain both selfcompatibility and strength for concrete applications. Key words: partial replacement, m-sand, concrete elements. Cite this Article: Sabarish K V, Pratheeba Paul, M. Mohammed Aslam Khan, S. Gowtham, R. Hariharan, Utilization of M-Sand as a Partial Replacement for Fine Aggregate in Concrete Elements, International Journal of Civil Engineering and Technology (IJCIET) 9(10), 2018, pp editor@iaeme.com

2 Utilization of M-Sand as a Partial Replacement for Fine Aggregate in Concrete Elements 1. INTRODUCTIONS Natural sand is mostly excavated from river beds and forever hold high percentage of in organic materials, Chlorides, silt and sulphate that manipulate the strength, durability of concrete and reinforcing steel. Normally this course has left over proportion of overload fines of changeable properties, generally than 5mm size. The decrease of cement content in concrete mix proportion would smaller the cost of concrete and would raise the competitiveness in marketing since the chemical composition of cement and fly ash are different in the production process, spread of uncertainty with respect to main chemical composition will also be discussed. Ground granulated blast furnace slag also called slag cement is made from iron blast furnace slag. The molten slag at a high temperature of about 1500 Degree centigrade is rapidly chilled by quenching in water to form a glassy sand like granulated material. 2. MANUFACTURED SAND Manufactures sand or m-sand as it is generally known is made by powder hard granite rocks using heavy machinery. Particles are cubical in shape. Finely graded. Provides greater durability. Higher strength to create by overcoming deficiencies like segregation, bleeding, voids and capillary. Eco friendly and greater durability and workability. The usage of m-sand has enlarged durability, high strength and reduction in segregation permeability; it proves to be economical as a construction material replacing river sand. It can also transportation cost of river sand in a lot of cases. Mix 20mm 10mm Cs Ns Cement W/C Water Admixtures scm ADMIXTURES Admixtures are substance which is added to the concrete mix to present it more wanted properties. The water dropping agent was used because of its ability to dramatically increase the workability of fresh concrete with minimal result on the generally strength of the concrete. The admixtures of m-sand are carry an unbalanced charge of electricity and when put into water determination migrate towards the surface of the water with the electrically charged end stickling into the water editor@iaeme.com

3 Sabarish K V, Pratheeba Paul, M. Mohammed Aslam Khan, S. Gowtham, R. Hariharan 4. EXPERIMENTAL ANALYSIS The site experimental program was approved out at actual experiment in the laboratory and also for a given w/c ratio better idea regarding the workability attain on real site conditions was passed. This substitute proportion of cement is decide empirically as the objective of our learn was to investigate the product of use of scm with crushed sand and was not to discover any optimal replacement percentage of cement. We all know that on mixing cement with sand, stone/aggregates and water, a paste will form which can be used to bind the building materials together. This paste is also called as concrete. The strength of this concrete mix is determined by the proportion on which these cement, sand, stones or aggregates are mixed. There are various grades of concrete available in the market based on these ratios. Some of them are: M10, M20, M30, M35, etc. So, what really does M10 or M20 mean or represent. Table 1 Mix proportion for various trials (Kg/cubic meters) S.No Property River Sand M-sand 1. Shape Spherical Cubical Particle particle 2. Gradation Cannot be Can be controlled controlled 3. Specific Gravity Strength Normal Marginally Higher Comparison of M-Sand and River Sand 7days(N/mm2) 14days(N/mm2) 28days(N/mm2) M M M DISCUSSION 5.1. Strength Three cube sample every for a variety of percentage of river sand replace by M-Sand and unreliable percentage of PEG were experienced to resolve the 7, 14 and 28 days compressive strength by a Compression Testing Machine. The compressive strength test on cubes is conducted as per standards. strength for standard curing concrete at 7, 14, and 28 days 7days(N/mm2) 14days(N/mm2) 28days(N/mm2) Conventional concrete 50% M-Sand strength for replacement of 50% M-Sand (Self curing concrete) at 7, 14 and 28 days editor@iaeme.com

4 Utilization of M-Sand as a Partial Replacement for Fine Aggregate in Concrete Elements 5.2. Flexural Strength The flexural strength is stress at failure in bending. It is equal or slightly larger than the failure stress in tension. Flexural strength, also known as modulus of rupture, or bend strength, or transverse rupture strength is a material property, defined as the stress in a material just before it yields in a flexure test. The transverse bending test is most frequently employed, in which a specimen having either a circular or rectangular cross-section is bent until fracture or yielding using a three point flexural test technique. The flexural strength represents the highest stress experienced within the material at its moment of yield. Flexural strength for standard curing concrete at 7, 14 and 28 days Three beam samples every of the mix with a variety of percentage of M-Sand and a range of percentage of PEG were tested to resolve the flexural strength after 7, 14 and 28 days by a Universal Testing Machine. The tests were conduct as per standard specifications M M M Flexural 7days(N/m m2) Flexural 14days(N/mm 2) Flexural Strength at 28days(N/mm2) M M M Strength of 50% M-Sand (Self curing concrete) at 7, 14 and 28 days 5.3. Split Tensile Strength Three cylinder samples each of the mix with various percentages of M-Sand and various percentage of PEG were tested to determine the split tensile strength after 7, 14 and 28 day using a Compression Testing Machine. The tests were conducted as per standard specifications. Split Tensile strength for standard curing concrete at 7, 14 and 28 days Conventional concrete 50% M-Sand Strength for replacement of 50% M-Sand (Self curing concrete) at 7, 14 and 28 days editor@iaeme.com

5 Sabarish K V, Pratheeba Paul, M. Mohammed Aslam Khan, S. Gowtham, R. Hariharan 6. CONCLUSIONS The 100% crushed sand mix, when used with the same quantity of plasticizer did not gave us the essential strength the w/c ratio mandatory for mix with 100% crushed sand to gain the required workability is found to be maximum. The attendance of this high w/c ratio in 100% crushed sand mix had led to reduction in strength in this mix as compare to any other mix in our table. In standard curing methods the compressive, split tensile of concrete with 50% substitute of natural sand by m-sand reveals higher strength as compared to the conventional concrete. The applicability of the proposed concepts was demonstrated based on statistical data of materials available in hand. From 7 to 28 days the rates of strength development have been found to similar for control without M Sand concrete. REFERENCES [1] Sabarish.k.v, Experimental Studies On Partial Replacement Of Cement With Fly Ash In Concrete Elements, International Journal of Civil Engineering & Technology (IJCIET), Volume 8, Issue 9, September 2017, pp [2] B.Kalyani, KAbhishek, and S. Ajay, Determination of Mechanical Strength for High Grade Concrete by partial replacement of Artificial Sand - International Journal of Innovative Research in Science, Engineering and Technology, Vol. 3, [3] Karugu, K. Oyawaand W.O.Abuodha, Partial replacement of natural river sand with Crushed rock sand in concrete production - Global Engineers & Rechnologists Review, Vol.3, No.4, [4] India, Fly Ash Utilization Programme (FAUP),TIFAC, DST, New Delhi. [5] Phanikumar.B.R, RadheyS.Sharma (2004) Effect offlyash On Engineering Properties Of Expansive Soil Journal of Geotechnical and Geoenvironmental Engineering Vol. 130, no 7, July, pp [6] Dr. Robert M. Brooks (2009)- Soil Stabilization With Fly Ash And Rice Husk Ash, ISSN: X, EISSN: Volume 1, Issue 3. [7] Erdal Cokca (2001) Use Of Class C Fly Ashes for the Stabilization of an Expansive Soil Journal of Geotechnical and Geo environmental Engineering Vol. 127, July, pp editor@iaeme.com