Graphene oxide modified Strain Hardening Cementitious Composites with enhanced mechanical and thermal properties by incorporating ultra-fine phase change materials
Graphene oxide modified Strain Hardening Cementitious Composites with enhanced mechanical and thermal properties by incorporating ultra-fine phase change materials
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氧化石墨烯改性应变硬化水泥基复合材料通过掺入超细相变材料增强机械和热性能
DOI：
10.1016/j.cemconcomp.2019.02.010
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发表时间：
2019-04
影响因子：
10.5
通讯作者：
Li Zongjin
中科院分区：
文献类型：
--
作者：
Lu Zeyu;Lu Cong;Leung Christopher K Y;Li Zongjin
将超细(30 μm)相变材料(PCM)复合材料与氧化石墨烯(GO)复合，制备了一种新型应变硬化水泥基复合材料，以提高其力学性能和热性能。采用真空浸渍的方法，在膨胀珍珠岩(EP)中加入75.0wt%的石蜡(PA)，制备了超细的相变材料复合材料。由于相变材料的微填料效应和火山灰性质，超细相变材料可以作为超细集料，在不降低压缩强度的情况下改善复合材料的热性能。为了进一步改善复合材料的拉伸和弯曲性能，引入了GO，并对其作用机理进行了全面的探讨。在热工性能方面，掺入超细相变材料不仅使其导热系数降低了56.6%，而且提高了比热容和隔热性能，使结构混凝土构件集承重和室内温度控制于一体。综上所述，通过添加超细相变材料复合材料和GO来提高热性能和力学性能的新型SHC显示出集结构、节能和耐久性于一体的绿色建筑的巨大潜力。
A novel Strain Hardening Cementitious Composite (SHCC) was developed by incorporating ultra-fine (30 μm) phase change materials (PCMs) composites and Graphene Oxide (GO) to enhance its mechanical and thermal performance. The ultra-fine PCMs composites were fabricated by intruding 75.0 wt % of paraffin (PA) into 25.0% of expanded perlite (EP) using the vacuum impregnation method. The ultra-fine PCMs can be used as ultra-fine aggregates to improve the composites’ thermal properties without compromising the compressive strength, due to the micro-filler effect and pozzolanic properties of the PCMs composites. GO was introduced to further improve the tensile and flexural performance and the mechanisms involved are comprehensively discussed. Regarding thermal properties, the addition of ultra-fine PCMs composites not only reduced the thermal conductivity by 56.6% but also improved the specific heat capacity and thermal insulation properties of the SHCC, which enabled the structural concrete members with the integration of load-bearing and indoor temperature control. In conclusion, a novel SHCC with enhanced thermal and mechanical properties by adding ultra-fine PCMs composites and GO shows a great potential for green buildings with the integration of structure, energy conservation and durability.
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影响因子：
10.5
作者：
Lv, S. H.;Deng, L. J.;Cui, Y. Y.
通讯作者：
Cui, Y. Y.
影响因子：
8.4
作者：
Lu, Zeyu;Hanif, Asad;Li, Zongjin
通讯作者：
Li, Zongjin
粉煤灰对氧化石墨烯水泥浆体流变性能的影响
影响因子：
7.4
作者：
Wang, Qin;Cui, Xinyou;Dong, Yichen
通讯作者：
Dong, Yichen
影响因子：
13.1
作者：
Abdelwaheb Trigui;M. Karkri;C. Boudaya;Y. Candau;L. Ibos
通讯作者：
Abdelwaheb Trigui;M. Karkri;C. Boudaya;Y. Candau;L. Ibos
影响因子：
11.2
作者：
Jun Ma;Jack C. P. Cheng
通讯作者：
Jun Ma;Jack C. P. Cheng