Evaluation of mechanic damping properties of montmorillonite/organo-modified montmorillonite-reinforced cement paste
Evaluation of mechanic damping properties of montmorillonite/organo-modified montmorillonite-reinforced cement paste
复制标题
DOI：
10.1016/j.conbuildmat.2019.01.110
复制
发表时间：
2019-04
影响因子：
7.4
通讯作者：
P. Yu;Z. Wang;Pengfei Lai;Peng Zhang;Jianpeng Wang
中科院分区：
文献类型：
--
作者：
P. Yu;Z. Wang;Pengfei Lai;Peng Zhang;Jianpeng Wang
研究了蒙脱土（MMT）/有机改性蒙脱土（OMMT）增强水泥浆体的力学性能和阻尼性能。通过动态力学分析（DMA）测量阻尼性能。高掺量的蒙脱土或有机蒙脱土均会降低水泥基复合材料的抗压强度。OMMT增强水泥净浆的阻尼性能优于MMT增强水泥，其阻尼机制包括水泥基体内摩擦、外摩擦和多相摩擦。此外，通过有机改性，在水泥浆体中产生了约束层阻尼结构，有利于水泥浆体的阻尼性能。
In this study, the mechanical and damping properties of montmorillonite (MMT)/organo-modified montmorillonite (OMMT) reinforced cement paste were investigated. The damping properties were measured by dynamic mechanical analysis (DMA). The compressive strength of cement composites was decreased by a high dosage of MMT or OMMT. The damping capacities of OMMT-reinforced cement paste was superior to that of MMT-reinforced cement, in which the damping mechanism comprised the internal friction, external friction, and multiphase friction within the cement matrix. Moreover, a constrained-layer damping structure was produced in cement paste by the organic modification of MMT and was beneficial to the damping properties of cement paste.