Some characteristics of high strength fiber reinforced lightweight aggregate concrete
Some characteristics of high strength fiber reinforced lightweight aggregate concrete
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DOI：
10.1016/s0958-9465(02)00016-1
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发表时间：
2003-02-01
影响因子：
10.5
通讯作者：
Zhu, B
中科院分区：
文献类型：
--
作者：
Kayall, O;Haque, MN;Zhu, B
研究了聚丙烯纤维和钢纤维对高强轻骨料混凝土性能的影响。轻质混凝土中使用烧结粉煤灰骨料;部分细粒被粉煤灰取代。报道了对抗压强度、间接拉伸强度、断裂模量、弹性模量、应力-应变关系和压缩韧性的影响。与普通烧结粉煤灰轻骨料混凝土相比，聚丙烯纤维加入量为混凝土体积的0.56%时，间接抗拉强度增加了90%，断裂模量增加了20%。聚丙烯纤维的加入没有显着影响其他机械性能的研究。钢纤维在1.7%的混凝土体积引起的间接拉伸强度增加约118%，断裂模量增加约80%。钢纤维增强还引起弹性模量的小幅降低，并改变了应力-应变关系的形状，使其变得更加曲线化。记录了压缩韧性的大幅增加。这表明当使用钢纤维增强时，延展性显著增加。(C)2002爱思唯尔科技有限公司。保留所有权利。
The effect of polypropylene and steel fibers on high strength lightweight aggregate concrete is investigated. Sintered fly ash aggregates were used in the lightweight concrete; the fines were partially replaced by fly ash. The effects on compressive strength, indirect tensile strength, modulus of rupture, modulus of elasticity, stress-strain relationship and compression toughness are reported. Compared to plain sintered fly ash lightweight aggregate concrete, polypropylene fiber addition at 0.56% by volume of the concrete, caused a 90% increase in the indirect tensile strength and a 20% increase in the modulus of rupture. Polypropylene fiber addition did not significantly affect the other mechanical properties that were investigated. Steel fibers at 1.7% by volume of the concrete caused an increase in the indirect tensile strength by about 118% and an increase in the modulus of rupture by about 80%. Steel fiber reinforcement also caused a small decrease in the modulus of elasticity and changed the shape of the stress-strain relationship to become more curvilinear. A large increase in the compression toughness was recorded. This indicated a significant gain in ductility when steel fiber reinforcement is used. (C) 2002 Elsevier Science Ltd. All rights reserved.