A study of Dynamic Properties of Recycled Granite Residual Soils with
New Polymer SH
Abstract
Improving and reusing construction waste soils is now more relevant in
light of the need to decrease CO2 emissions. In this paper, four
contents of polymer SH (i.e., 0.0%, 3.0%, 3.5%, and 4.0%) were used
to strengthen the granite residual soils, which is a kind of
construction waste soils. Based on low-velocity impacts and employing
scanning electron microscope (SEM) tests, this paper investigated the
impact resistance of reinforced granite residual soils combined with
polymer SH. Recycling waste granite residual soils can reduce the
emissions of CO2 generated during the transportation and disposal. The
low-velocity impact tests were performed on specimens at three initial
kinetic energy levels (i.e., 124.18J, 243.40J, and 402.36J) achieved by
varying the drop height of the weights. The experimental results showed
that the impact resistances of granite residual soils were enhanced
significantly with a mixture of polymer SH, for which the increment
reached the maximum with a 3.5% content of polymer SH. In addition, the
microstructures of granite residual soils combined with four contents of
polymer SH (i.e., 0.0%, 3.0%, 3.5%, and 4.0%) were investigated
using a Scanning Electron Microscope (SEM). The SEM images demonstrated
that the interfaces of the granite residual soils particles became less
distinct due to cementation with the increasing of the polymer SH
content. With the optimal polymer SH content of 3.5%, the pore of
granite residual soil was the smallest, resulting in a best enhancement
of the impact resistance of the reinforced granite residual soil.