Flexural properties of PVA fiber reinforced high ductility cementitious composites containing calcium carbonate whisker
Flexural properties of PVA fiber reinforced high ductility cementitious composites containing calcium carbonate whisker
复制标题
含碳酸钙晶须PVA纤维增强高延性水泥基复合材料的弯曲性能
DOI：
10.1016/j.conbuildmat.2021.124329
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发表时间：
2021-09
影响因子：
7.4
通讯作者：
Zhihua Li
中科院分区：
文献类型：
--
作者：
Zhen Yuan;Cong Zhang;Chaofan Xia;Lishan Wu;Zhihui Yu;Zhihua Li
为了降低PVA纤维增强高韧性水泥基复合材料（PVA-HDCC）的成本并提高其力学性能，采用碳酸钙晶须（CW）部分替代PVA纤维，设计了一种含CW的PVA-HDCC（PVA/CW-HDCC）。研究了不同PVA纤维和碳酸钙晶须含量的PVA/CW-HDCC的弯曲性能。结果表明，随着PVA纤维含量的减少，PVA-HDCC的弯曲变形硬化能力降低。然而，部分取代PVA纤维的CWs的PVA-HDCCs的弯曲强度，极限弯曲挠度，弯曲韧性和弯曲挠度硬化行为的改善。TOPSIS法分析结果表明：1.5%PVA +0.5%CW组比2%PVA纤维组具有更高的性价比。为了进一步了解所设计HDCC的弯曲性能，提出了一个考虑CaCO 3晶须影响的半经验数学模型，用于预测PVA/CW-HDCC的弯曲强度和极限弯曲挠度。理论计算结果表明，该模型可用于预测PVA/CW-HDCCs的弯曲性能。
To reduce the cost and improve mechanical properties of PVA fiber reinforced high ductility cementitious composites (PVA-HDCCs), calcium carbonate (CaCO3) whisker (CW) was used to partially substitute PVA fibers, and thus a novel kind of the PVA-HDCC containing the CW was designed (PVA/CW-HDCC). Flexural properties of PVA/CW-HDCCs with the different PVA fiber and CaCO3whisker contents were investigated. The results indicated that the PVA-HDCC flexural deflection hardening ability decreased with the PVA fiber content reduction. However, partially substituted PVA fibers by CWs improved the flexural strength, ultimate flexural deflection, flexural toughness and flexural deflection hardening behavior of PVA-HDCCs. Technique for Order Performance by Similarity to Ideal Solution (TOPSIS) analysis results indicated that the group with 1.5% PVA + 0.5% CW had a higher cost performance than that of the group with 2% PVA fiber. To further understand the flexural properties of the designed HDCCs, a semi-empirical mathematical model considering the influence of CaCO3whisker was proposed for predicting the flexural strength and ultimate flexural deflection of PVA/CW-HDCCs. The theoretical calculation results showed that the proposed model can be employed to predict flexural properties of PVA/CW-HDCCs.
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影响因子：
13.1
作者：
Choi, Won-Chang;Yun, Hyun-Do;Kim, Sun-Woo
通讯作者：
Kim, Sun-Woo
DOI：
10.1016/s1065-7355(97)90001-8
发表时间：
1997-06
期刊：
Advanced Cement Based Materials
影响因子：
--
作者：
V. Li;H. Stang
通讯作者：
V. Li;H. Stang
影响因子：
13.1
作者：
Gesoglu, Mehmet;Guneyisi, Erhan;Asaad, Diler Sabah
通讯作者：
Asaad, Diler Sabah
DOI：
10.1061/(asce)mt.1943-5533.0000372
发表时间：
2012-02-01
影响因子：
3.2
作者：
Ou, Yu-Chen;Tsai, Mu-Sen;Chang, Kuo-Chun
通讯作者：
Chang, Kuo-Chun
DOI：
10.1061/(asce)0733-9399(1992)118:11(2246
发表时间：
1992-11-01
期刊：
JOURNAL OF ENGINEERING MECHANICS-ASCE
影响因子：
--
作者：
LI, VC;LEUNG, CKY
通讯作者：
LEUNG, CKY