Effect of nano-silica on the efflorescence of waste based alkali-activated inorganic binder
Effect of nano-silica on the efflorescence of waste based alkali-activated inorganic binder
复制标题
纳米二氧化硅对废碱活化无机粘结剂风化的影响
DOI：
10.1016/j.conbuildmat.2018.02.006
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发表时间：
2018-04
影响因子：
7.4
通讯作者：
Liu Yu
中科院分区：
文献类型：
--
作者：
Wang Jinbang;Zhou Tongtong;Xu Dongyu;Zhou Zonghui;Du Peng;Xie Ning;Cheng Xin;Liu Yu
碳酸盐风化引起的风化是碱激发无机材料劣化的主要原因之一。为了抑制废旧碱激发无机粘结剂的风化，研究了纳米二氧化硅对碱激发无机粘结剂的抗压强度、碳酸盐离子浓度、水化速率和孔径分布的影响，并分析了其抑制风化的机理。结果表明，在碱激发无机粘结剂中加入纳米二氧化硅可以进一步提高材料的抗压强度和微观结构性能。另外，随着纳米SiO_2含量的增加和纳米SiO_2颗粒尺寸的减小，风化强度降低。此外，水化速率结果表明，纳米二氧化硅的加入加速了废弃碱激发无机粘结剂的水化3d前的水化。提出的抑制机理主要有：纳米二氧化硅的微团聚体填充效应、诱导成核作用和促进水化作用。
The efflorescence caused by carbonate weathering is one of the dominant causes of deterioration of alkali-activated inorganic materials. In order to inhibit the efflorescence of waste based alkali-activated inorganic binder, the effects of nano -silica on the compressive strength, carbonate ions concentration, hydration rate and pore size distribution of the obtained alkali-activated inorganic binder have been investigated, and the efflorescence inhibition mechanism has been also analyzed. The results revealed that compressive strength and microstructural properties could be further developed with inclusion of nano-silica in alkali-activated inorganic binder. In addition, the efflorescence decreased with increasing nano-silica content and decreasing of the nano-silica particle size. Besides, the hydration rate results indicated that the hydration of waste based alkali-activated inorganic binder was accelerated before hydration for 3d with the incorporation of nano-silica. The suggested inhibition mechanisms discussed were mainly; micro-aggregate filling effect, induced nucleation, and accelerated hydration effects of nano-silica.
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影响因子：
3.9
作者：
Palacios, M.;Puertas, F.
通讯作者：
Puertas, F.
影响因子：
4.7
作者：
Kupwade-Patil, Kunal;Soto, Fernando;Mainardi, Daniela S.
通讯作者：
Mainardi, Daniela S.
影响因子：
2.7
作者：
P. Schilling;A. Roy;H. Eaton;P. Malone;Newell W. Brabston
通讯作者：
P. Schilling;A. Roy;H. Eaton;P. Malone;Newell W. Brabston
DOI：
10.9734/bjast/2013/2690
发表时间：
2013-01
期刊：
British Journal of Applied Science and Technology
影响因子：
--
作者：
H. Khater
通讯作者：
H. Khater
影响因子：
4.4
作者：
Zhenhai Xu;Zonghui Zhou;P. Du;Xin Cheng
通讯作者：
Zhenhai Xu;Zonghui Zhou;P. Du;Xin Cheng