the wastes utility in concrete
نویسندگان
چکیده
the marble slurry wastes (msw) produced by marble industry is left unattended in theenvironment which causes serious environmental problems. in order to evaluate its potential usage in normal1:2:4 concrete, this study was designed, where the partial replacement of cement with msw was examined.replacement of cement with msw from 0 to 100%, and also its usage as an additive material 10% and 20% byweight of cement were the main objectives of this study. various laboratory tests, like compressive strengthtest, splitting tensile test and slump test were conducted by using local available msw. the primary chemicalcomposition of the msw indicated that it contains high contents, nearly 97% of lime (cao). the laboratoryresults show that cement in structural concrete can be replaced by msw up to 7% safely. the compressiveand splitting tensile strength of concrete was observed to be increased by 15% and 6% by the addition of 10%msw. a similarly increase in strength was also observed by adding the 20% of msw additionally to thenormal 1:2:4 concrete. however, by the addition of msw in concrete, its slump strength i.e., its workabilityis found to be reduced.
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عنوان ژورنال:
international journal of environmental researchناشر: university of tehran
ISSN 1735-6865
دوره 8
شماره 4 2014
کلمات کلیدی
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