جستجوی مقالات مرتبط با کلیدواژه « پوزولان معدنی » در نشریات گروه « عمران »

Today, the large production of cement in the world, especially in Iran, has become critical. Because the production of cement has caused the production of carbon dioxide gas and increased air pollution in cities. Therefore, in this research, the combination of bentonite and zeolite was used to increase the quality of concrete and reduce the consumption of stone and cement powder. The laboratory program of this research includes five mixed designs with the simultaneous combination of bentonite and zeolite in different ratios of 0%, 2.5%, 5%, 7.5% and 10% by weight of cement in SCC concrete. The results of this research showed that the simultaneous use of zeolite and bentonite up to 5% by weight of cement can have acceptable results. It increases the compressive strength by 8% and the tensile strength by 11%. But these pozzolans increase the hardness of SCC concrete due to their high water absorption and the possibility of the concrete being blocked behind the rebar density increases.