东南大学学报（英文版）2023，Vol.39Issue(3)：277-283,7.DOI:10.3969/j.issn.1003-7985.2023.03.008
矿物掺合料对废弃贝壳砂浆的力学性能和耐久性的影响
Influence of mineral admixtures on the mechanical property and durability of waste oyster shell mortar
摘要
Abstract
To mitigate the environmental pollution caused by aquatic waste, crushed waste oyster shell (WOS) was added as an aggregate to the mortar. The impact of varying dosages (0％, 20％, 30％, and 40％) of fly ash (FA)/slag powder (SG) and curing periods on the workability, mechanical properties, and durability of the resulting mixtures were investigated. Furthermore, the ecological and economic benefits of WOS mortars were examined. The findings reveal that the compressive strength and static modulus of elasticity in WOS mortar decreased moderately after adding the mineral admixture during the initial curing phase. However, the mechanical properties of WOS mortar improved upon extending the curing period. Additionally, the partial replacement of cement with FA/SG promoted the migration ability of chloride and minimized the drying shrinkage in WOS mortars. In scenarios where engineering application requirements are satisfied, the utilization of WOS mortar could reduce CO2 emissions by 29％.关键词
废弃贝壳砂浆/工作性能/力学性能/耐久性/生态经济效益Key words
crushed waste oyster shell ( WOS ) mortar/workability/mechanical property/durability/ecological and economic benefits分类
建筑与水利引用本文复制引用
廖迎娣,王鑫,封嘉蕊,孟彦廷,陈达,达波..矿物掺合料对废弃贝壳砂浆的力学性能和耐久性的影响[J].东南大学学报（英文版）,2023,39(3):277-283,7.基金项目
The National Natural Science Foundation of China(No.51509081,52208241),Jiangsu Provincial Key Research and De-velopment Program(No.BE2020715). （No.51509081,52208241）
