Effect of different sand grading on strength properties of cement grout

This paper aims to study the consistency and strength properties of cement grouts prepared with three different sand grading namely 100% passing through 1.18 mm sieve (P1.18 mm), 0.90 mm sieve (P0.90 mm) and 0.60 mm sieve (P0.60 mm), respectively. The measured flowing time indicated that the specimens with the finer sand grading had lower flowability than those of the coarser sand grading. As the results, the finer sand grading specimens required a higher water to cement ratio to achieve an equivalent workability. The specimens with the coarser sand grading obtained higher 7 and 28 days compressive strengths than those of the finer sand grading when the lower water to cement ratio was adopted (0.61–0.63). However, when the higher water to cement ratio (0.65–0.67) was used, the specimens with the finer sand grading achieved higher long-term compressive, flexural and splitting tensile strengths than those of the coarser sand grading.