再生砖粗骨料混凝土基本力学性能试验研究  

Experimental Research on Basic Mechanical Properties of Recycled-brick Coarse-aggregate Concrete

作　　者：赵爱华[1] 翟爱良[1] 韩健[1] 王成名[1] 戚勇帼 

机构地区：[1]山东农业大学水利土木工程学院,山东泰安271018

出　　处：《水利与建筑工程学报》2014年第3期98-105,共8页Journal of Water Resources and Architectural Engineering

摘　　要：为深入了解再生砖粗骨料混凝土的基本力学性能,测试了5种再生砖粗骨料替代率的混凝土棱柱体抗压强度、应力-应变关系和静力受压弹性模量等基本力学指标。结果表明:再生砖粗骨料混凝土棱柱体受压破坏过程与破坏形态与普通混凝土类似;随着再生砖粗骨料替代率的增加,棱柱体抗压强度先增大后减小、静力受压弹性模量逐渐降低、单轴受压应力-应变曲线的峰值应变逐渐增大;提出了再生砖粗骨料混凝土棱柱体抗压强度与立方体抗压强度的换算关系以及单轴受压应力-应变曲线的拟合公式,为再生砖粗骨料混凝土的进一步研究提供了重要依据。In order to deeply understand the basic mechanical properties of recycled-brick coarse-aggregate concrete ,the compressive strength of prism ,stress-strain curves ,elastic modulus in static compression and other basic mechanical in-dexes were tested with five sets of this concrete .The results showed that the compressive failure process and mode of the prism of this concrete was similar to that of ordinary concrete .In addition ,with the increasing of the replacement ratio of this recycled-brick coarse-aggregate ,the compressive strength of the prism firstly increased and then decreased ,the elas-tic modulus in static compression decreased gradually ,and the peak strain of uniaxial compressive stress-strain curve in-creased gradually .Finally ,the conversion relation between the prism’s compressive strength and cube’s compressive strength of this concrete as well as the fitting formula of uniaxial compressive stress-strain curve are put forward ,which could provide an important basis for further study on this recycled-brick coarse-aggregate concrete .

关 键 词：再生砖粗骨料混凝土 棱柱体抗压强度 应力 - 应变曲线 峰值应变 静力受压弹性模量 

分 类 号：TU528[建筑科学—建筑技术科学]