On the reinforcement of cement mortars through 3D printed polymeric and metallic fibers
On the reinforcement of cement mortars through 3D printed polymeric and metallic fibers
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DOI：
10.1016/j.compositesb.2015.12.006
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发表时间：
2016-04-01
影响因子：
13.1
通讯作者：
Fraternali, F.
中科院分区：
文献类型：
--
作者：
Farina, I.;Fabbrocino, F.;Fraternali, F.
我们采用增材制造技术设计和制造新型水泥砂浆增强元件。对由聚合物和金属材料制成的3D打印纤维增强的水泥砂浆进行了三点弯曲测试和光学显微镜分析，这些纤维具有不同的表面形态和粗糙度。实验和分析结果表明，受检材料的抗剪承载力，抗弯强度和断裂韧性在很大程度上取决于设计和增强纤维的材料。用高表面粗糙度纤维增强的试样表现出剪切破坏和高界面粘结强度，而未增强的试样和用光滑纤维增强的试样表现出弯曲破坏和有限的界面粘结强度。我们观察到，砂浆试样与钛合金Ti6Al4V纤维增强表现出的承载能力的两倍以上的试样与光聚合纤维增强。(C)2015爱思唯尔有限公司版权所有。
We employ additive manufacturing technologies for the design and fabrication of novel reinforcing elements of cement mortars. Three-point bending tests and optical microscope analyses are performed on a cement mortar reinforced with 3D printed fibers made of polymeric and metallic materials, which exhibit different surface morphology and roughness. Experimental and analytical results highlight that the shear capacity, flexural strength and fracture toughness of the examined materials greatly depend on the design and the material of the reinforcing fibers. Specimens reinforced with high surface roughness fibers exhibit shear failure and high interfacial bond strength, while unreinforced specimens and specimens reinforced with smooth fibers exhibit flexural failure and limited interfacial bond strength. We observe that mortar specimens reinforced with titanium alloy Ti6Al4V fibers exhibit load carrying capacity more than twice as high as specimens reinforced with photopolymeric fibers. (C) 2015 Elsevier Ltd. All rights reserved.