### Practical Method for Mix Design of Cement-based Grout

He used three different cement : sand weight ratios, namely 1 : 1, 1 : 1.5, and 1 : 2 with various water-cement ratios using the same sand gradation. In general it was found that the application of more sand in the mix will reduce material cost but will also reduce the grout flowability. A higher water-cement ratio is required if more sand is used in the mix to maintain the grout flowability