GREEN CONCRETE UTILIZING ANDESITE AND RHYOLITE AGGREGATE

The study focuses on using a new type of coarse aggregate (andesite and Rhyolite) to produce a Green high-strength-self-compacting concrete (GHSSCC).Thus, four trail mixes were caste for estimating the concrete materials and proportions, also twenty three mixes were caste with some variables. Four types of aggregate were used (gravel, dolomite, andesite and Rhyolite) to show the effect of aggregate type on concrete properties. Four aggregate ratios were used (1:1, 2:1, 3:2, 5:2) to show the effect of aggregate ratio on the concrete properties. Pozzolanic material (silica fume) was used with 15% replacement of the cement, water cementatious ratio was (0.3), super plasticizer (viscocrete) was used with (3%) of the cement. Ordinary Portland cement was used in all the mixes, with cement contents ( 500) kg/m3 . Self compacting concrete tests (spread flow diameter, spread flow time, L-box, and V-funnel) were prepared on concrete on its fresh phase, hardened concrete tests (compression strength, splitting strength, bending strength, and Shemidet hammer) were prepared to identify the mechanical properties of concrete