Study on the Relationship between Strength and Water-Cement Ratio forthe EPS Silt Light-Weight Soil Based on Gray Verhulst Model

摘要

PS silt mixed soil is a high quality synthetic fill material made of foam material and sludge wasted. This paper indicatesaccording to the test results and the previous studies that: the intensity of light-weight soils is increasing as the greywater ratio increases, and when the gray water ratio reaches a certain value, the strength of the growth rate is not large. Therefore,the research of the relationship of its strength and water-cement ratio for providing accurate design parameters of soilparticles lightweight soil is very important. According to existing research results, a number of samples were made to studythe relationship between strength and water-cement ratio, then the analyzed curves were obtained. In this paper, based on thegray Verhulst model, the variation regulation between the strength and water ratio was fitted. The study showed that the fittedcurve was similar with the measured curve. It is found that the measured curves can be derived from fitted curve available,the related research can give good references for construction of EPS silt light-weight soil.