22-04-2014, 04:58 PM
Strength of Concrete by Using Sea Sand and Micro Silica
Abstract
Now a day’s the availability of fine aggregate is decreases. In recent years, it has been taken a growing interested in the
shortage of natural fine aggregate having good quality across the country, because of deficient natural sand supplies and increased
construction demands. So, we find the alternative sources. The main aim of our project to suggest the partially replacement of fine
aggregate with sea sand. The investigation carried out to acquire a better understanding of factors which influence the strength
properties of concrete. Sea sand can be transformed into fine aggregate. The compressive, split tensile, flexural strength of sea
sand replaced concrete is less than the compressive, split tensile, flexural strength of the conventional concrete. Hence micro
silica is used in sea sand concrete possesses higher compressive, split tensile, flexural strength than the conventional concrete. In
our test programmed the specimens were casted and remolded after 24 hours and were cured in a curing pond till and date of
testing. The specimens used for the test included cube for compression test, cylinder for split tensile test and beams for flexural
test. Three specimens were tested for the required age and average value was taken. The tests were conducted for 7, 14, and 28
days.