Abstract
PS silt mixed soil is a high quality synthetic fill material made of foam material and sludge wasted. This paper indicates according to the test results and the previous studies that: the intensity of light-weight soils is increasing as the grey water 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 soil particles lightweight soil is very important. According to existing research results, a number of samples were made to study the relationship between strength and water-cement ratio, then the analyzed curves were obtained. In this paper, based on the gray Verhulst model, the variation regulation between the strength and water ratio was fitted. The study showed that the fitted curve 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.
Highlights
EPS silt soil mix lightweight soil technology treats sludge as a "resource" from a new perspective, by adding wasted polystyrene foam (Expanded polystyrene sheet, referred to as EPS), curing agent, mixed together into a certain mixed strength light weighted synthetic filler [1, 2]
The maximum axial stress should be selected as the unconfined compressive strength
If the maximum axial stress is not obvious, the stress at 15% axial strain should be chose as the compressive strength
Summary
EPS silt soil mix lightweight soil technology treats sludge as a "resource" from a new perspective, by adding wasted polystyrene foam (Expanded polystyrene sheet, referred to as EPS), curing agent, mixed together into a certain mixed strength light weighted synthetic filler [1, 2]. The technology can be the foam material waste and sludge into high-quality filling materials, which make waste recycling is one of the emerging environmental geotechnical engineering and development of the main research directions [3]. For this new filling soil material, its compressive strength is the most important mechanics quality [2, 4]. The research of the relationship between water-cement ratio and its strength is important for providing accurate design parameters of particles lightweight soil
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