Mix design optimization of seawater sea sand coral aggregate concrete

作     者：SUN Li YANG ZeYu QIN RenYuan WANG Chao 

作者机构：School of Civil EngineeringShenyang Jianzhu UniversityShenyang 110168China School of Environment and Civil EngineeringDongguan University of TechnologyDongguan 523808China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2023年第66卷第2期

页      面：378-389页

核心收录：

学科分类：08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.52078310,51878420) the Ministry of Science and Technology of China (Grant Nos.2018YFC1504303,2017YFC1503103) Xingliao Talent Program of Liaoning Province (Grant No.XLYC1902038) 

主　　题：coral aggregate concrete sea sand seawater compressive strength failure mechanism mix proportion design 

摘      要：With the resource shortage in coastal areas,the construction of concrete structures using freshwater and river sand has brought great economic and environmental *** use of seawater,sea sand,and coral aggregates in concrete mixes has become an alternative solution for coastal and marine structures,especially for offshore structures and artificial *** this study,378 seawater,sea sand,and coral aggregate concrete(Coral-SWSSC)specimens were prepared,and their mechanical properties were investigated comprehensively through compressive tests to explore the optimized mix design at different *** showed that the mechanical properties of Coral-SWSSC were strongly correlated with the water-to-binder ratios,coastal particle gradings,and pretreatment method of coastal *** on the experimental results,mix proportion designs of CoralSWSSC were proposed for concrete from C20 to C50 grades,and the failure mechanism of Coral-SWSSC at different grades was discussed according to their respective failure *** findings of the current study provide knowledge on the optimized design of Coral-SWSSC,which can be used to promote the application of Coral-SWSSC in offshore,marine,and ocean engineering.