STUDY ON STRENGTH BEHAVIOUR OF CONCRETE BY PARTIAL REPLACEMENT OF MISCELLANEOUS COARSE AGGREGATES

Abstract

This project describes the effect of type aggregate on compressive strength of high strength and normal strength
concrete. High strength concrete is a type of high performance concrete generally with a compressive strength of 40 N/mm2
or greater and normal strength concrete of 20N/mm2 compressive strength of concrete an experimental program is carried
out. In order to be useful in construction the product must meet minimum compressive and requirements which are
determined through a Mechanical Test of Concrete with Aggregates mechanical test; and to check the strength of the
concrete used for bridges, buildings, and other structures where the principal stresses are compressive cube samples were
obtained and tested in compression testing machine. In this study, the standard specification from the Compression Testing
Machine (CTM) will be used as a minimum compressive strength of 140 kg/cm2 per minute. The different types of coarse
aggregate like White Granite, Basalt, and Quartzite are used in this project. Natural sand as fine aggregate and ordinary
Portland cement as binding material are used for making concrete mixer. To assess the influence of type of aggregate on
compressive strength of concrete cubes of size 150mm x 150mm x 150mm are casted and tested in compression testing
machine at the age of 7days,21days and 28 days.