Marble Dust Powder Case Study

A. Study Of Compressive Strength Of Concrete By Partial Replacement Of Cement With Marble Dust Powder[4]
Abdullah Anwar, Juned Ahmad, Meraj Ahmad, Khan Sabih , Ahmad Syed , Aqeel Ahmad
Abdullah Anwar & his teammates stated that marble dust powder is now days intensely focused research topic in which many problem related to environmental well as civil engineering are associated. They stated that Marble dust powder is settled by alleviation then drop away, which end up in environmental contamination, additionally to forming dust in summer and threatening each agriculture and public goodness. They replacement (OPC & PPC) cement consequently within the reach of 1/3, 5%, 10%, 15% 20%, & twenty fifth by weight of M-20 grade concrete & concrete mixtures
They stated that the stone dust is settled by sedimentation and then dumped away which results in environmental pollution, in addition to forming dust in summer and threatening both agriculture and public health & therefore, utilization of the stone dust in various industrial sectors especially the construction, agriculture, glass and paper industries would help to protect the environment. They stated that, it is most essential to develop eco-friendly concrete from stone waste & in their research study ,the (PPC) cement has been replaced by stone waste accordingly in the range of 0%, 10%, 20%, 30% 40%, & 50% by weight for M-25 grade concrete & concrete mixtures were produced, tested and compared in terms of workability and strength to the conventional concrete. These tests were carried out to evaluate the mechanical properties for 7, 14 and 28 days & as a result, the compressive strength increased up to 20% replacing of stone waste. This research work is concerned with the experimental investigation on strength of concrete and optimum percentage of the partial replacement by replacing (PPC) cement via 0%, 10%, 20%, 30%, 40% and 50% of stone waste. The aim of their investigation was to check the behavior of concrete while replacing of waste with different proportions
Their research would expand utilization of marble waste in East Java region of Indonesia in the manufacture of concrete roof tiles by combining the use of sand and waste marble powder as a substitute for river sand and portland cement. Their research would create a material innovation product of environmentally friendly with relatively low prices without compromising quality. The purpose of their research was to find the composition of the mixed-use waste marble tile that produces the most optimal strength & experimental method used in this study to test the basic material and test physical and mechanical properties of concrete roof tiles ( bending loads , water absorption and resistance to water seepage ) in accordance with ISO 0096 :2007 with eight variations in material composition .They stated that the concrete tile with marble waste produces a lighter weight 3.6 % - 12.3 % & replacement of PC with marble powder by 20 % qualify flexural strength , water absorption ( no more than 10 % ) and there is no seepage within 20 hours ± 5 minutes .They concluded that composition tile marble concrete using waste as a substitute for river sand PC and a decent and qualified SNI 0096:2007 is a composition of 0.8 PC : 0.2 SL : 1 Ps : 2 PSL and composition 0.8 PC : 0.2 SL: 3 PSL , while most