Experimental Investigation on Variation in Compressive Strength & Mechanical Properties of Composite Concrete - A Review
Author(s):
R.S. Chaudhari, Dr.P.P.Bhangale
Keywords:
Binders, Compressive strength, Human hairs, PP, Tensile strength.
Abstract
The fiber reinforced concrete is one of the important topics as it is a means to replace conventional concrete ingredients by considering new ideas and materials. In the first attempt, we tried to replace the cement by some percentage of human hairs & coarse aggregate by Polypropylene (PP). The length of the human hair used in this experiment varied from 3 cm to 6 cm and the first class polypropylene were used. The idea behind this selection is to use such a material which is harmful to the nature and also non degradable. The various combinations of percentages used in this study are 1) 4%hair +0%PP 2) 4%hair +1%PP 3) 4%hair +2%PP 4) 4%hair +3%PP. For testing all those proportions, M-25 grade Concrete was considerded as a base concrete. The compressive strength of the specimens were tested & it was observed that the Compressive strength of the composite concrete was maximum at combination 4%hair +2%PP and then it started reducing.Total 60 specimens were casted for this work. In the second experiment, the effect of bentonite, sugarcane molasses, jaggery and polyvinyl acetate on strength properties of concrete was studied. The experimentation has been carried out to assess the strength properties of concrete using these materials in concrete composition. Based on the literature, the main reason of usage of these materials is due to the binding property possessed by them. Three different percentages of polyvinyl acetate were chosen in the experimentation as 0.1%, 0.2% and 0.3% respectively and keeping proportion of bentonite, sugarcane molasses and jaggery constant at 30%, 0.1% and 0.1% respectively by weight of cement. Cement was only replaced bentonite. Sugarcane molasses, jaggery and polyvinyl acetate were only added without replacing cement. However, the values of strength observed were at lower side initially, later gain in strength was observed. At 0.2% PVA composite proportion maximum strength was observed. The test results show some marginal strength variation at all proportions. For this experimentation total 30 cubes and 30 cylinders were tested.
Article Details
Unique Paper ID: 145117

Publication Volume & Issue: Volume 4, Issue 7

Page(s): 393 - 397
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