水泥固化海相软土劣化深度快速预测方法  

A rapid prediction method for deterioration depth of cement-solidified marine soft soils

作　　者：王曼 杨俊杰[1,2] 武亚磊 王子谋 WANG Man;YANG Junjie;WU Yalei;WANG Zimou(Key Laboratory of Marine Environment and Ecology of the Ministry of Education,Ocean University of China,Qingdao 266100,China;College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China)

机构地区：[1]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100 [2]中国海洋大学环境科学与工程学院,山东青岛266100

出　　处：《岩土工程学报》2024年第7期1549-1555,共7页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(52378380,52078474,51779235)。

摘　　要：劣化深度是评价固化土劣化程度较为简明的指标。基于常规腐蚀试验结果的幂函数形式固化土劣化深度预测方法具有实用性,腐蚀试验中腐蚀时间取值越长、劣化深度越深,预测结果越准确。固化土劣化是漫长的过程,利用高浓度腐蚀介质的加速腐蚀试验可缩短试验周期,实现劣化深度的快速预测。水泥固化海相软土的腐蚀试验结果表明,3倍浓度海水制备的腐蚀土腐蚀水泥土28 d的加速腐蚀试验与常规腐蚀试验腐蚀360 d的劣化深度存在线性关系,基于两者的等效关系并结合幂函数形式劣化深度预测式,提出水泥固化海相软土劣化深度快速预测方法,预测的劣化深度发展趋势与实测结果较为吻合。基于加速腐蚀试验结果的幂函数形式固化土劣化深度快速预测方法可行且具有实用性,研究思路对于类似劣化问题的研究具有一定的借鉴意义。The deterioration depth is a relatively simple index to evaluate the deterioration degree of solidified soils.The practical prediction method for the deterioration depth of solidified soils is in the form of power function based on the results of the conventional deterioration tests,while the longer the corrosion time and the deeper the deterioration depth,the more accurate the predicted results.The deterioration of solidified soils is a lengthy process,and the accelerated deterioration tests for high concentration corrosive media can shorten the test period and obtain rapid prediction of the deterioration depth.The deterioration test results of cement-solidified marine soft soils indicate that there is a linear relationship between the 28 d accelerated deterioration test of erosion soil prepared with 3 times seawater concentration and the 360 d deterioration depth of the conventional deterioration tests.Then based on the equivalent relationship between them and the power function formula for predicting the deterioration depth,a rapid prediction method for the deterioration depth of cement-stabilized marine soft soils is proposed,and the predicted development trend of the deterioration depth is consistent with the measured results.The rapid prediction method for the deterioration depth of solidified soils based on the accelerated deterioration test results in the power function form is feasible and practical.The research idea is of certain reference significance for the researches on the similar deterioration problems.

关 键 词：水泥土 海相软土 加速腐蚀试验 等效劣化深度 快速预测 

分 类 号：TU448[建筑科学—岩土工程]