Compressive strength of fly ash magnesium oxychloride cement containing granite wastes

Recent development in magnesium oxychloride cement

“…Fly ash 5-30% by weight of MgO powder. 5,20,[70][71][72][73] The workability or fluidity of MOC was enhanced, the setting time retarded, and the final compressive strength decreased. 5,20,[70][71][72][73] The compressive strength retention coefficient was increased from 0.4 to 0.85.…”

“…5,20,[70][71][72][73] The workability or fluidity of MOC was enhanced, the setting time retarded, and the final compressive strength decreased. 5,20,[70][71][72][73] The compressive strength retention coefficient was increased from 0.4 to 0.85. 5,20,[70][71][72][73] The water resistance was improved, lightweight and eco-friendly MOC can be obtained, and fly ash is cheap and easy to get.…”

Influences of Mineral Admixture On the Comressive strength of Magnesium Oxysulphate Cement

“…However, its high cost and some lower mechanical strengths have restricted the large-scale practical application,then in the magnesium cement production process, adding a certain amount of mineral admixture (such as fly ash, silica fume, slag) [3] , can improve the performance of magnesium cement, such as strength, water-resistance, and various industrial by-products can be well used,which can save resources and reduce cost. By adding fly ash and slag, Yu [4] prepared MgO-SF-FA-MgCl 2 -H 2 O cementitious materials, which greatly improved the mechanical properties and water-resistance of magnesium oxychloride cement .Some studies [5] found that the mixing of fly ash and silica fume could produce different drying shrinkage of magnesium oxychloride cement.The fly ash was also found to be involved in the reaction of cement concrete of magnesium oxychloride , cementitious materials produced from the process made the paste structure more dense, and the water-resistance of the concrete was highly improved.…”

The Use of Asbestos Wastes as a Fillers on Sorel Cement

“…In the last several years, studies on modified Sorel cements containing fly ash or granite wastes as fillers have also been conducted [6]. Authors used crushed granite (from the residues of cut granite blocks) and dried granite sludge (from granite polishing).…”