Evaluation of flexural strength and compressive strength of cement column for flexiable soft clay

Abstract

This paper presents the results of research on cement content and reasonable water/cement ratio of 15% and ≤ 1.0, respectively. With the amount of cement, this optimal water/cement ratio, the ratio between the functional strength and compressive strength has values from 0.45 to 0.57. Depending on the cement content and the water/cement ratio, the ratio between the bearing strength and the compressive strength ranges from 0.36 to 0.84 based on the equivalence assessment between the bearing strength and the tensile strength. compressive strength compressive strength of soil-cement mixtures for ductile soils. In addition to depending on the cement content, the strength also depends on the water/cement ratio. The study was conducted through the stress strength test on the standard sample. The sampling process was carried out in the room according to the fusion method when changing the cement content by 5%, 10%, 15% and 20%, respectively. For each cement content, the water/cement ratio will be changed to 0 values respectively; 0.5; 1.0; 1.5 and 2.0. Research results are the basis for designers to choose reasonable bending resistance parameters, both ensuring technical and economic factors and ensuring favorable factors in the construction process.

Keywords: Soft soil; deep cement mixing piles; cement soil mixed; water/cement ratio; cement content; bending resistance of cement column.