文献类型：期刊文献

英文题名：Influence of Carbonization Process on the Mechanical Properties of Nano-MgO Modified Cement Soil

作者：Wang, Wei[1];Zhou, Hang[1];Li, Jian[1];Tao, Feifei[2];Li, Cuihong[1];Qian, Biao[3];Jiang, Ping[1]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China;[3]Tongchuang Engn Design Co Ltd, Shaoxing 312000, Peoples R China

年份：2021

卷号：13

期号：6

外文期刊名：SUSTAINABILITY

收录：SSCI(收录号：WOS:000646059200001)、SCI-EXPANDED(收录号：WOS:000646059200001)、、Scopus(收录号：2-s2.0-85103552470)、WOS

基金：This research was funded by the National Natural Science Foundation of China (grant number 41772311), the Scientific Research Projects of Zhejiang Department of Housing and Urban and Rural Construction of China (grant number 2017K179, 2019K171) and the International Scientific and Technological Cooperation Projects of Shaoxing University (grant number 2019LGGH1007).

语种：英文

外文关键词：cement soil; nano MgO; carbonization process; compressive strength; energy dissipation

外文摘要：In order to explore the modification effect of carbonization time on nano-MgO-modified cement soil, unconfined compressive strength tests of nano-MgO-modified cement soil with carbonization times of 0 h, 6 h, 1 d, 2 d and 4 d were carried out. A method for normalizing the stress-strain curve was proposed, and the influence of nano-MgO content and carbonization time was investigated from the three aspects of compressive strength, peak strain and energy dissipation. The test results show the following: (1) The compressive strength of the modified cement soil can be significantly improved by adding 1.0% nano-MgO and after 1 d carbonization. (2) Under the same nano-MgO content, the peak strain of the modified cement soil after 2 d carbonization reaches the maximum, which can significantly increase its ductility. However, the nano-MgO content has little influence on the peak strain of the modified cement soil. (3) Under the same nano-MgO content, the energy dissipation rate of the modified cement soil after 1 d carbonization reaches the maximum, which can better resist the damage of external load.