内部含初始球形缺陷混凝土试件的制备方法研究

关键字：混凝土,球形缺陷,制备方法

（西南科技大学 土木工程与建筑学院，四川 绵阳  621010）

    摘要：混凝土内部的初始缺陷对其力学性能有很大影响，通过对自制定位模具的不断改良和制备方法的试验探究，提出一种制备含内部初始球形缺陷混凝土试件的方法：分步骤浇筑法。研究结果表明：分步骤浇筑法既不影响混凝土基体强度，又能够将自制初始球形缺陷比较精确地置于混凝土试件内部。该方法的推广和应用，为进一步拓展对含内部初始球形缺陷的混凝土试件的相关试验研究提供了重要的技术支持。
    关键词：混凝土；球形缺陷；制备方法
    中图分类号：TU528.01        文献标识码：A        文章编号：1001-702X（2017）04-0083-04
 

Study on the preparation of concrete specimens with interior initial spherical defects
GUO Qi，TAO Junlin
（School of Civil Engineering and Architecture，Southwest University of Science and Technology，Mianyang 621010，China）

    Abstract：The initial defects have great influence on the mechanical properties of the interior concrete，through the improvement of the self-made positioning mold and the preparation method，a new method for preparing concrete specimens with internal initial spherical defects was put forward. The results show that the step casting method can not only affect the strength of concrete matrix，but also can make the initial spherical defects in the concrete specimens accurately. The promotion and application of this method provides an important technical support for the further development of the experimental study on the concrete specimens with internal initial spherical defects.
    Key words：concrete，spherical defects，preparation method