Effect of aggregate shape on the mechanical properties of a simple concrete
Effect of aggregate shape on the mechanical properties of a simple concrete
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DOI：
10.1016/j.engfracmech.2008.10.010
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发表时间：
2009
影响因子：
5.4
通讯作者：
C. Rocco;M. Elices
中科院分区：
文献类型：
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作者：
C. Rocco;M. Elices
考虑了骨料形状对混凝土断裂能、抗拉强度和弹性模量的影响。为此目的，8个简单的水泥基复合材料的设计，制造和测试，有两个目的：提供实验数据，可以扔一些光在这个涉及的问题，并帮助在未来的水泥基复合材料的设计，并提供信息，可以用作基准检查混凝土破坏的数值模型，因为这个简单的复合材料是可以很容易地被建模。36缺口梁进行了测试，并记录的断裂能和弹性模量的值。拉伸强度由间接标准拉伸试验测量。与现有的实验数据的比较也包括和讨论。断裂建模使用粘性裂纹与双线性软化函数，从实验测量推断的软化函数的数据也提供和讨论。
The influence of aggregate shape on the fracture energy, tensile strength and elasticity modulus in concrete is considered. For this purpose, eight simple cement-based composites were designed, manufactured and tested, with two purposes: to provide experimental data that can throw some light on this involved problem and help in the design of future cement-based composites, and supply information that can be used as a benchmark for checking numerical models of concrete failure, as this simple composite is amenable to being modelled quite easily. Thirty-six notched beams were tested and values of the fracture energy and elasticity modulus were recorded. The tensile strength was measured from indirect standard tensile tests. Comparison with available experimental data is also included and discussed. Fracture was modelled using a cohesive crack with a bilinear softening function; data of the softening function inferred from the experimental measurements are also provided and discussed.