Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete.
Evaluation of the Effects of Surface Treatment Methods on the Properties of Coral Aggregate and Concrete.
复制标题
表面处理方法对珊瑚骨料和混凝土性能影响的评价
DOI：
10.3390/ma14226784
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发表时间：
2021-11-10
期刊：
影响因子：
--
通讯作者：
Yang W
中科院分区：
文献类型：
--
作者：
Liu J;Ju B;Xie W;Zhou T;Xiao H;Dong S;Yang W
珊瑚混凝土成本低，材料方便，是一种优良的加工原料。然而，其较低的强度限制了珊瑚混凝土的应用。表面改性有望提高多孔珊瑚混凝土的性能。本研究通过对珊瑚骨料表面进行单一和复合改性处理来改善其性能，从而提高珊瑚混凝土的力学性能。结果表明：粒状高炉渣（GBFS）的微团聚效应和火山灰活性与水玻璃（SS）的渗透性和缩聚性是相互促进的。GBFS和SS能有效填充珊瑚骨料的孔隙，提高骨料的密度和承载能力等性能，降低吸水率和破碎指数50%以上。GBFS和SS能强化和加速水泥的水化，在界面过渡区产生大量的硬水化产物，加强骨料与砂浆的粘结，提高界面过渡区的强度。珊瑚混凝土抗压强度显著提高。
Coral concrete has low cost and convenient materials, making it an excellent raw material for processing. However, its lower strength limits the application of coral concrete. Surface modification is expected to increase the properties of porous coral concrete. In this study, single and compound modification treatments were applied to the surface of a coral aggregate to improve its properties for promoting the mechanical performance of coral concrete. The results showed that the micro-aggregate effect and pozzolanic activity of granulated blast furnace slag (GBFS) and the permeability and polycondensation of sodium silicate (SS) could be mutually promoted. The GBFS and SS could effectively fill the pores of the coral aggregate, enhancing the properties of the aggregate, such as density and load-bearing capacity, and reducing the water absorption and crushing index by more than 50%. GBFS and SS could intensify and accelerate the hydration of cement, and generate a large number of hard hydration products at the interfacial transition zone (ITZ), which could strengthen the bonding between the aggregate and mortar, improving the strength of the ITZ. The compressive strength of the coral concrete was significantly increased.
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影响因子：
11.4
作者：
Mansur, A. A. P.;Santos, D. B.;Mansur, H. S.
通讯作者：
Mansur, H. S.
影响因子：
7.4
作者：
Bilim, Cahit;Atis, Cengiz Duran
通讯作者：
Atis, Cengiz Duran
影响因子：
11.4
作者：
Chang, JJ
通讯作者：
Chang, JJ
影响因子：
2.7
作者：
Arumugam, RA;Ramamurthy, K
通讯作者：
Ramamurthy, K
珊瑚混凝土整体应力-应变曲线的试验研究
影响因子：
7.4
作者：
Da, Bo;Yu, Hongfa;Dou, Xuemei
通讯作者：
Dou, Xuemei