High-Strength, Strain-Hardening Cement-Based Composites (HS-SHCC) Made with Different High-Performance Polymer Fibers
High-Strength, Strain-Hardening Cement-Based Composites (HS-SHCC) Made with Different High-Performance Polymer Fibers
复制标题
由不同高性能聚合物纤维制成的高强度应变硬化水泥基复合材料 (HS-SHCC)
DOI：
10.1007/978-3-319-78175-4_47
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
S. Michel
中科院分区：
文献类型：
--
作者：
M. Liebscher;I. Curosu;V. Mechtcherine;A. Drechsler;S. Michel
本文研究了四种不同类型的高性能聚合物微纤维制备的高强应变硬化水泥基复合材料（HS-SHCC）的拉伸性能。特别是，高密度聚乙烯（HDPE），聚（对亚苯基-聚酰胺）（芳族聚酰胺），作为纺聚（对亚苯基-2，6-苯并二恶唑）（PBO），和高模量PBO纤维进行了检查，在高强度，细粒度，水泥基质的增强效果。此外，进行微观调查，以评估纤维的润湿能力，并解释它们与水泥基质的相互作用。结果表明，与HDPE纤维增强的HS-SHCC相比，PBO和芳纶纤维制成的HS-SHCC产生了增加的第一裂纹应力和拉伸强度，但也大大减少了裂纹宽度。这可以追溯到与疏水HDPE纤维相比，这些纤维具有相当高的润湿性，确保了与水泥基质的更强的界面结合，但也归因于其优异的上级机械性能，例如拉伸强度和杨氏模量。
This article presents an investigation on the tensile behavior of high-strength, strain-hardening cement-based composites (HS-SHCC) made with four different types of high-performance polymer microfibers. In particular, high-density polyethylene (HDPE), poly(p-phenylene-terephthalamide) (aramid), as-spun poly(p-phenylene-2,6-benzobisoxazole) (PBO), and high-modulus PBO fibers were examined in respect of their reinforcing effect in a high-strength, finely grained, cementitious matrix. Moreover, microscopic investigations were carried out to assess the fibers’ ability to be wetted and to explain their interaction with the cementitious matrix. It was shown that the HS-SHCC made with PBO and aramid fibers yielded increased first crack stress and tensile strength, but also a considerably reduced crack width compared to the HS-SHCC reinforced with HDPE fibers. This was traced back to the considerably higher wettability of these fibers compared to the hydrophobic HDPE fibers, ensuring a stronger interfacial bond with the cementitious matrix, but also to their superior mechanical properties, such as tensile strength and Young’s modulus.
影响因子：
11.4
作者：
Curosu, Iurie;Mechtcherine, Viktor;Millon, Oliver
通讯作者：
Millon, Oliver
影响因子：
11.4
作者：
Curosu, Iurie;Liebscher, Marco;Michel, Stefan
通讯作者：
Michel, Stefan