Green concrete is the latest development in the field of construction technology which offers a sustainable and eco-friendly solution as a building material. The cement used in conventional concrete is responsible for releasing high amount of carbon dioxide which is harmful for the environment. The concept of green concrete renders replacement of cement partially or fully by various materials which are either byproducts in the production process of other materials or recycled waste. In this paper we focuses on replacing a different percentage of the cement with pozzolanic materials and also replacing the coarse and fine aggregate with locally volcanic materials to produce an eco-friendly and sustainable concrete. Thus, Four trail mixes were casted for estimating the concrete materials and proportion, also fifteen mixes were casted with some variables .Two types of coarse aggregate were used (dolomite and volcanic rock) to show the effect of volcanic aggregate on concrete properties. Fly Ash was used with 10% replacement of the cement , Volcanic ash was used with ( 20 % to 80%) replacement of the cement , the water cementatious ratio equal 0.3, was used with constant ratio 1% of the cement. Ordinary Portland cement was used in all mixes with constant cement content equal 500 kg/m3. Slump test were prepared on concrete in its fresh phase, hardened concrete tests

The study focuses on producing a new type of concrete utilizing igneous rocks (andesite and ryolite) as a coarse aggregate. Thus, four trail mixes were casted for estimating the concrete materials and proportions, also twenty-three mixes were casted with some variables. Four types of aggregate were used (gravel, dolomite, andesite and ryolite) to show the effect of aggregate type on concrete properties. Four aggregate ratio 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% of the cement, water cementatious ratio ranged from (0.22), super plasticizer (viscocrete) was used with (1.5) % of the cement. Ordinary Portland cement was used in all the mixes with cement content (900) kg/m 3 . Self-compacting concrete tests (slump flow diameter, slump 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.

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/m 3 .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