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在水工建筑物中,地基常由几种不同性能的岩石组成,与上层建筑物材料——混凝土的性能差异较大,在光弹性实验中,为了较准确模拟原型各种条件,以提高光弹性试验的适用能力和成果质量,因而要求改变光弹性模型材料的弹性模量.解放以来,我国的科研单位在这方面做了很多研究工作,解决了一些工程实际问题.而最常用的方法,是改变环氧树脂中的增塑剂(苯二甲酸二丁脂)的用量,来达到这一目的的.但是,苯二甲酸二丁脂是一种非活性增塑剂,在固化过程中,不与环氧树脂起交联反应,
In hydraulic structures, the foundation is often composed of several rocks with different properties, and the material properties of the superstructure differ greatly. In the photoelastic experiment, in order to more accurately simulate various conditions of the prototype in order to improve the light Elasticity test and the quality of the results, thus requiring changes in the elastic modulus of the photoelastic model material.After liberation, our research institutes have done a lot of research in this area, to solve some practical engineering problems.And the most commonly used method, Is to change the amount of epoxy resin plasticizer (dibutyl phthalate), to achieve this goal.But dibutyl phthalate is an inactive plasticizer, in the curing process, Not with the epoxy resin crosslinking reaction,