This research presents an attempt of using wastewater from stone slurry\nwaste in production of concrete. Several concrete mixtures were prepared by\nusing tap water and stone slurry wastewater at different w/c ratios and replacement\nratios of wastewater in substitute of tap water. Testing of concrete\nsamples included slump, compressive strength, flexural strength and absorption.\nTest results showed reduction of workability (slump) at all w/c ratios\nand replacement ratios. The maximum compressive strength didnâ??t change\nsignificantly at w/c = 0.7 and 28 days of curing compared with compressive\nstrength at w/c = 0.5 and 0.6. From linear regression of the experimental results,\nthe results showed that at 20% replacement ratio of tap water with\nwastewater, the reduction in compressive strength was insignificant (not\ngreater than 10% to 15%). Test results showed varying reduction of absorption\nat different w/c and replacement ratios, up to 62% at w/c = 0.5.
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