Effect of aggregate size on the fracture and mechanical properties of a simple concrete
Effect of aggregate size on the fracture and mechanical properties of a simple concrete
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DOI：
10.1016/j.engfracmech.2008.02.011
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发表时间：
2008-09-01
影响因子：
5.4
通讯作者：
Rocco, C. G.
中科院分区：
文献类型：
--
作者：
Elices, M.;Rocco, C. G.
分析了骨料粒径对不同类型混凝土断裂能、抗拉强度和弹性模量的影响。为此目的，九个简单的水泥基复合材料已被设计，制造和测试，一个目标是提供实验结果，可用作基准检查混凝土断裂的数值模型，因为这种简单的复合材料（矩阵，相同半径的球形骨料，和两种类型的矩阵-骨料界面）是适合建模。总共测试了44个样本。从缺口梁试验，断裂能和弹性模量的值。通过间接标准拉伸试验，推导出了拉伸应力。还提供了从实验测量中提取的双线性软化函数的数据。与现有的实验数据的比较也包括和讨论。(C)2008爱思唯尔有限公司保留所有权利。
The influence of the aggregate size on the fracture energy, tensile strength and elasticity modulus in different types of concrete are analyzed. For this purpose, nine simple cement-based composites have been designed, manufactured and tested, with one objective to provide experimental results that can be used as a benchmark for checking numerical models of concrete fracture, as this simple composite (a matrix, spherical aggregates of the same radius, and two types of matrix-aggregate interface) is amenable to modelling. All in all, 44 specimens were tested. From notched beam tests, values of the fracture energy and modulus of elasticity were obtained. The tensile stress was deduced from indirect standard tensile test. Data for bilinear softening functions extracted from the experimental measurements are also provided. Comparison with available experimental data is also included and discussed. (C) 2008 Elsevier Ltd. All rights reserved.