Abstract：The expansive soil and disintegrated sandstone of the diversion project from the Yangtze River to the Huaihe River are taken as the research objects. The disintegrated sandstone is used to improve the expansive soil. Through the indoor dry-wet cycle test, the influences of the dry-wet cycle on the strength characteristics and fracture development of the improved sandstone soil are studied. The test results show that in the process of continuous water evaporation, the crack width of sandstone improved soil develops more evenly, and the influence of continuous water evaporation on sandstone improved soil is small; with the increase of dry-wet cycles, the variation ranges of evaporation rate and residual water content of sandstone improved soil are small, and the influence of dry-wet cycles on the moisture evaporation of improved soil is reduced; with the increase of dry-wet cycles, the variation ranges of the maximum crack width, average crack width and peak crack width difference of the improved soil are more gentle than those of the expansive soil without improvement.
巩齐齐 明文静 . 崩解性砂岩改良膨胀土的裂隙发育规律研究[J]. 土木工程学报, 2022, 55(2): 73-81.
Gong Qiqi Ming Wenjing. Study on fracture development of expansive soil improved by disintegrated sandstone. 土木工程学报, 2022, 55(2): 73-81.
