Studies on Engineering Properties of Cement Mortar Grout Using Fly Ash and Stone Dust

The present study is based on the engineering properties of cement mortar grout using fly ash and stone dust. Fly ash (FA) and stone dust (SD) are the by-products of power plant and stone crusher, respectively; these materials are used as a partial cement replacement in the conventional cement mortar grout. FA and SD up to 40% partial replacement and by keeping 10% lime have a constant replacement and 10% lime is used as an additive of FA and SD to improve the binding properties for constant water–cement (w/c) ratio 0.32 carried out in the study. The workability and strength properties are identified and compared with conventional cement mortar grout. The obtained results showed a higher compressive strength of FA at 80 and 70% which are 26.13 and 24.29 N/mm2, respectively, and for SD at 90 and 70% which are 17.76 and 15.11 N/mm2, respectively. By the end of the experiment, FA and SD are proved as a replacement material for cement. Hence, it can be recommended as a grouting material for the construction of composite pavement.