丙烯酸镁/钙复合溶液固化黄土性能的研究  

Study on Solidification Property of Loess with Magnesium and Calcium Acrylate Composite Solution

作　　者：丛玉隆 CONG Yulong(College of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang Liaoning 110168,China)

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168

出　　处：《辽宁化工》2024年第7期1000-1004,共5页Liaoning Chemical Industry

摘　　要：由于天然黄土具有易崩解、易侵蚀、抗水性能差、多具湿陷性等问题,无法满足施工要求。因此,对黄土进行改性,使天然素黄土达到施工标准。由于丙烯酸盐类溶液在进行固化的过程中会产生一系列的化学反应,从而形成不溶性的聚合物高分子化合物凝胶体,所以选择丙烯酸镁/钙混合溶液(简称丙烯酸盐混合溶液)作为黄土改性的固化剂。研究了不同比例丙烯酸盐混合溶液的制备、固化物的性能测试、丙烯酸盐混合溶液的比例对黄土固化物的吸水率和静水崩解的影响、黄土固化物的无侧限抗压强度测试、养护龄期对抗压强度的影响。实验结果表明:天然素黄土经丙烯酸盐混合溶液固化之后的耐水性和抗压强度得到了明显的改善,并且比例越大固化效果越好,耐水性越好;同时,在丙烯酸盐混合溶液比例为4∶1时,无侧限抗压强度达到最大;在养护龄期60 d时抗压强度达到最大。Because natural loess is easy to collapse,easy to erosion,poor water resistance,collapsibility and other problems,it cannot meet the requirements of construction.Therefore,the loess is modified to make the natural loess reach the construction standard.Because the acrylate solution will produce a series of chemical reactions in the process of curing,thus forming insoluble polymer gel,the magnesium/calcium acrylate mixed solution(hereinafter referred to as acrylate mixed solution)is selected as the curing agent for loess modification.In this paper,the preparation of acrylate mixed solution with different proportions,the performance test of the cured product,the influence of the proportion of acrylate mixed solution on the water absorption and hydrostatic disintegration of loess cured product,the unconfined compressive strength test of loess cured product and the influence of curing age on the compressive strength were studied.The experimental results showed that the water resistance and compressive strength of natural loess were obviously improved after curing with acrylic salt mixture solution,and the higher the proportion,the better the curing effect and water resistance.At the same time,the unconfined compressive strength reached the maximum when the ratio of acrylic salt solution was 4∶1.The maximum compressive strength was reached at 60 d curing.

关 键 词：黄土 固化剂 丙烯酸盐混合溶液 

分 类 号：TU443[建筑科学—岩土工程]