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Effect of Applied Loads on Water and Chloride Penetrations of Strain Hardening Cement-Based Composites
AbstractStrain-hardening cement-based composites (SHCC) with polyvinyl alcohol (PVA) fibers have excellent tensile and bending behaviors; however, their water and aggressive ion penetrations should be considered carefully under applied load conditions because they can significantly influence the durability of SHCC. The goal of this study is to evaluate the effect of applied loads on water and chloride penetrations of SHCC. The capillary absorption test was respectively carried out under loading and after unloading, and then the water and chloride penetrations were evaluated. The results show that applied loads have a significant effect on penetrations, and the penetrations prove to rise with the increase of applied loads. Particularly, when a higher load is applied, water and chloride rapidly penetrate into SHCC. However, SHCC-W whose surface is processed with waterproofing agent, exhibits good penetration resistance. Due to the shrinkage stress induced by fibers in SHCC, the crack widths of SHCC after unloading are lower than those under loading, and the penetrations are thus supposed to decrease. The relationship between the applied load and water penetration of SHCC is established, which can be used for evaluating the durability of SHCC when considering the applied loading conditions.
Effect of Applied Loads on Water and Chloride Penetrations of Strain Hardening Cement-Based Composites
AbstractStrain-hardening cement-based composites (SHCC) with polyvinyl alcohol (PVA) fibers have excellent tensile and bending behaviors; however, their water and aggressive ion penetrations should be considered carefully under applied load conditions because they can significantly influence the durability of SHCC. The goal of this study is to evaluate the effect of applied loads on water and chloride penetrations of SHCC. The capillary absorption test was respectively carried out under loading and after unloading, and then the water and chloride penetrations were evaluated. The results show that applied loads have a significant effect on penetrations, and the penetrations prove to rise with the increase of applied loads. Particularly, when a higher load is applied, water and chloride rapidly penetrate into SHCC. However, SHCC-W whose surface is processed with waterproofing agent, exhibits good penetration resistance. Due to the shrinkage stress induced by fibers in SHCC, the crack widths of SHCC after unloading are lower than those under loading, and the penetrations are thus supposed to decrease. The relationship between the applied load and water penetration of SHCC is established, which can be used for evaluating the durability of SHCC when considering the applied loading conditions.
Effect of Applied Loads on Water and Chloride Penetrations of Strain Hardening Cement-Based Composites
Wang, Penggang (Autor:in) / Zhao, Tiejun / Ma, Zhiming / Xiao, Jianzhuang
2016
Aufsatz (Zeitschrift)
Englisch
BKL:
56.45
Baustoffkunde
Lokalklassifikation TIB:
535/6520/6525/xxxx
| British Library Online Contents | 2016
Strain-Hardening Cement-Based Composites : SHCC4
| TIBKAT | 2018
Water permeability of cracked strain-hardening cement-based composites
| Elsevier | 2017