Xiang-Gang Xia 1,and Bin Ren 1,Investigation Center of Mine Underground EngineeringXiang-Gang Xia 1,and Bin Ren

Xiang-Gang Xia 1,and Bin Ren 1,Investigation Center of Mine Underground Engineering
Xiang-Gang Xia 1,and Bin Ren 1,Investigation Center of Mine Underground Engineering, Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China; [email protected] (X.-G.X.); [email protected] (B.R.) School of Civil Engineering and Architecture, Anhui University of Science and Technologies, Huainan 232001, China Correspondence: [email protected]: Zhang, J.-S.; Xia, X.-G.; Ren, B. Influences of Curing Period and Sulfate Concentration around the Dynamic Properties and Energy Absorption Traits of Cement Soil. Crystals 2021, 11, 1291. https://doi.org/10.3390/ cryst11111291 Academic Editor: JosL. Garc Received: 9 September 2021 Accepted: 22 October 2021 Published: 25 OctoberAbstract: To study the influences of curing period and sulfate concentration on the dynamic mechanical properties of cement soil, this study made use of a split Hopkinson stress bar device. Charybdotoxin custom synthesis Impact tests had been performed on cement soil specimens with distinct curing periods and diverse sulfate concentrations. The relationships in between the dynamic stress train, dynamic compressive strength, and absorption energy of those cement soil specimens were analyzed. The test results show that with continuous loading, cement soil specimens primarily expertise an elastic stage, plastic stage, and failure stage; with escalating curing period and sulfate concentration, the dynamic compressive strength and absorption energy of cement soil specimens comply with a trend of first rising after which decreasing. The dynamic compressive strength and absorption energy of cement soil specimens reached maximum values at a curing period of 14 d as well as a Na2 SO4 resolution concentration of 9.0 g/L. Growing the dynamic compressive strength and absorption energy can proficiently strengthen the capability of cement soil specimens to resist harm. This paper offers a practical reference for the application of cement soil in dynamic environments. Keywords and phrases: cement soil; curing period; sulfate concentration; dynamic compressive strength; absorption energy1. Introduction Cement soil, which can be broadly utilised in engineering construction applications, is actually a composite material with a certain strength formed by uniformly mixing a distinct proportion of soil, cement, and water [1,2]. Because of the complexity on the web site atmosphere in actual engineering, scholars have carried out considerable analysis on the mechanical properties of cement soil below different environments [31]. Chen et al. [12] studied the mechanical properties of cement soil subjected to dry et cycles. The outcomes showed that with rising numbers of dry et cycles, both the compressive strength and tensile strength of specimens elevated 1st and then decreased; additionally, mechanical strength may very well be efficiently improved by adding a precise volume of basalt fibers to specimens. Guo et al. [13,14] performed unconfined compression tests and fatigue tests on cement soil specimens that had undergone freeze haw cycles. The outcomes showed that adding the appropriate amount of basalt fibers improves the compressive, frost-resistance, and fatigueresistance properties of cement soil. Guo et al. also fitted the ML-SA1 Autophagy relationship amongst pressure level and fatigue life, the outcomes of which present a reference for real-world engineering applications. Han et al. [15] studied the influence of Na2 SO4 option on the strength and pore structure of cement soil. They concluded that in the course of the curing method of cement soil, Na2 SO4 actively parti.