期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：7
页码：6298
DOI：10.15680/IJIRSET.2015.0407138
出版社：S&S Publications
摘要：In present era vast development occurred in the field of concrete technology. Many scientists andresearchers have been developed abundant techniques to improve strength and durability parameters of the concrete. Anumber of studies have been carried out to investigate the possibility of utilizing a broad range of materials as partialreplacement material for cement in the production of concrete. The use of supplementary cementitious material inproduction of concrete can result in major saving of energy and cost. It also helps to improve strength, durability,impermeability and chemical resistance of concrete.The present study investigates the effects of mineral admixture (micro silica) & chemical admixture (Super plasticizer)on strength properties of M-30 grade concrete. The experimental program is designed to investigate micro silica (silicafume) as partial cement replacement in concrete. The replacement levels of cement by micro silica are selected as 4%,8%, 12%, 16% and 20% for constant water-cementitious material ratio of 0.45. For all mixes compressive strength isdetermined at 3, 7, 28 days for 150 X 150 X 150 mm size cubes. Also flexural strength and splitting tensile strength aredetermined at 28 days curing period. Current experimental study shows that 12% replacement of cement by micro silicagives higher compressive strength and higher splitting tensile strength whereas 8% replacement by micro silica giveshigher flexural strength. The results show increase in compressive strength by 20 % and flexural strength of concretespecimen by 16.2%.This study has also shown that between 8 to 16 %replacement levels, silica fume concrete willdevelop strength sufficient for construction purposes. Its use will lead to a reduction in cement quantity required forconstruction purposes and hence sustainability in the construction industry as well as aid economic construction.
