Tensile behavior of high-strength strain-hardening cement-based composites (HS-SHCC) made with high-performance polyethylene, aramid and PBO fibers
Tensile behavior of high-strength strain-hardening cement-based composites (HS-SHCC) made with high-performance polyethylene, aramid and PBO fibers
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DOI：
10.1016/j.cemconres.2017.04.004
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发表时间：
2017-08-01
影响因子：
11.4
通讯作者：
Michel, Stefan
中科院分区：
文献类型：
--
作者：
Curosu, Iurie;Liebscher, Marco;Michel, Stefan
本文介绍了由四种不同类型的分散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) 的拉伸行为的研究。特别是，研究了高密度聚乙烯（HDPE）、聚（对亚苯基对苯二甲酰胺）（芳纶）、初纺聚（对亚苯基-2,6-苯并二恶唑）（PBO）和高模量 PBO 纤维在高强度、细粒水泥基体中的增强效果。除了复合材料水平的拉伸实验外，还进行了单纤维拉拔测试，以表征每种复合材料的微观机械特性。此外，还进行了接触角测量和显微镜研究，以评估纤维的润湿能力并解释它们与水泥基体的相互作用。
The article at hand presents an investigation of the tensile behavior of high-strength strain-hardening cement based composites (HS-SHCC) made with four different types of dispersed high-performance polymer fibers. 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. Besides the tension experiments at the composite level, single fiber pullout tests were performed for a micromechanical characterization of each composite material. Furthermore, contact-angle measurements and microscopic investigations were carried out to assess the fibers' ability to be wetted and to explain their interaction with the cementitious matrix.