production engineering management innovation for modern production technology of ecosystem and sustainable development- friendly green concrete and marble wastes resulted from construction and destruction industry

According to the growth of civil industry and subsequently the use of cement and concrete in civil and other projects, studying the green concrete production technology is felt necessary. in this research, the optimum composition of green materials has been analyzed and determined mainly based on the special weight of concrete by testing several series of concrete mixture to reach the highest resistance in light concrete produced by the ceramic grains. in each series, using the light ceramic grains, the weight of light coarse-grains (ceramic) and natural sand was determined for several supposed special weights for a constant rate of proportion of water to cement and cement. the range of cement carat changes was 200-350 kg/m3 and special weight of concrete from 1.5 to 2.0 gr/m3 in concrete mixture. totally, more than 150 cylinder samples in the ages of 3,7,8 days underwent the pressure and tension test. the results obtained from the tests indicated that in an optimum mixture, minimum amount of cement is 1.9 gr/m3 to reach the pressurized resistance more than 130 kg/m3 in 28 days. the highest pressurized and tension resistance for concrete with 350 kg/m3 cement and special weight of 1.0 gr/m3 for ceramic grains with special weight of 1.9 gr/m3 for concrete in 28 days, 184 kg/m3 and 29.5 kg/m3 were obtained respectively.

Production engineering management innovation for modern production technology of ecosystem and sustainable development- friendly green concrete and marble wastes resulted from construction and destruction industry

According to the growth of civil industry and subsequently the use of cement and concrete in civil and other projects, studying the green concrete production technology is felt necessary. In this research, the optimum composition of green materials has been analyzed and determined mainly based on the special weight of concrete by testing several series of concrete mixture to reach the highest resistance in light concrete produced by the ceramic grains. In each series, using the light ceramic grains, the weight of light coarse-grains (ceramic) and natural sand was determined for several supposed special weights for a constant rate of proportion of water to cement and cement. The range of cement carat changes was 200-350 Kg/m3 and special weight of concrete from 1.5 to 2.0 gr/m3 in concrete mixture. Totally, more than 150 cylinder samples in the ages of 3,7,8 days underwent the pressure and tension test. The results obtained from the tests indicated that in an optimum mixture, minimum amount of cement is 1.9 gr/m3 to reach the pressurized resistance more than 130 kg/m3 in 28 days. The highest pressurized and tension resistance for concrete with 350 kg/m3 cement and special weight of 1.0 gr/m3 for ceramic grains with special weight of 1.9 gr/m3 for concrete in 28 days, 184 kg/m3 and 29.5 kg/m3 were obtained respectively.