Characterizing properties of magnesium oxychloride cement concrete pavement

作     者：ZHENG Wei-xin XIAO Xue-ying CHANG Cheng-gong DONG Jin-mei WEN Jing HUANG Qing ZHOU Yuan LI Ying 郑卫新;肖学英;常成功;董金美;文静;黄青;周园;李颖

作者机构：Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake ResourcesQinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China Key Laboratory of Salt Lake Resources Chemistry of Qinghai ProvinceXining 810008China University of Chinese Academy of SciencesBeijing 100049China 

基　　金：Project(2014–GX-A2A)supported by Major Science and Technology Projects of Qinghai Province,China Projects(2018-NN-152,2019-GX-165)supported by Science and Technology Achievements Transformation Project of Qinghai Province,China Projects(2018467,2019423)supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences project supported by the High-end innovative talents Thousand talents Plan of Qinghai Province,China 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2019年第26卷第12期

页      码：3410-3419页

摘      要：The performance of magnesium oxychloride cement concrete(MOCC)in road engineering in the arid region in northwest China was investigated over a two-year *** categories of MOCC pavement,light-burnt magnesia concrete road(Road-L)and dolomite concrete road(Road-D),were prepared with light-burnt magnesia and a mixture of light-burnt magnesia and caustic dolomite(1:3 by mass),*** in the properties of the MOCC pavement,such as compressive and flexural strength,mineralogical phase,and microstructure,after being exposed to two rainy seasons in the field were *** compressive strength of the cored samples were conducted after being aged for 28 d,and the compressive and flexural strength were tested at ages of 1,2,3,28,90,180,270,360 and 720 *** mineralogical phase and microstructure of the pavement were also analyzed by X-ray diffraction(XRD)and scanning electron microscopy(SEM).The results demonstrate that MOCC pavement obtained desirable compressive and flexural strengths after curing for 3 d for Road-L and 28 d for *** of the compressive and flexural strength of Road-L and Road-D decreased slightly after experiencing two rainy seasons,with the major hydration products being 5Mg(OH)2 MgCl28H2O(Phase 5)and 3Mg(OH)2 MgCl28H2O(Phase 3).The decomposition of Phase 5 is mainly responsible for reducing the mechanical strength of the MOCC pavement.

主 题 词：magnesium oxychloride cement concrete(MOCC) pavement mechanical strength microstructure 

学科分类：0810[工学-土木类] 0806[工学-电气类] 08[工学] 081304[081304] 0805[工学-能源动力学] 080502[080502] 0703[理学-化学类] 0813[工学-化工与制药类] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11771-019-4263-8

馆 藏 号：203879959...