废胶粉改性沥青混合料弯曲试验研究

Experimental Study on Bending Test of Crumb Rubber Modified Asphalt Mixture

为探讨沥青混合料小梁试件的受力机理,进行了小梁三点弯曲试验,试验结果表明废胶粉改性沥青混合在承受荷载与产生的变形方面都有一定的优势,加之具有节约能源的特点,所以废胶粉改性沥青混合料是值得推广使用的。提取试验中得到的废胶粉改性沥青混合料的加载图,将加载图进行相关的处理(DICM方法,是现代图像处理技术和光测力学相结合的方法)得到一系列的应变与位移的数据,再将些数据导入到MATLAB所编的程序中,绘制出相应的应变与位移的云图,对这些云图进行分析,就得到了在加载过程中废胶粉改性沥青混合料小梁试件中各部分的应变与位移的变化。

To evaluate the stress mechanism of asphalt mixture trabecular.The trabecular three point bending test was done.Test results showed that the waster rubber powder modified asphalt mixture withstanding loading and deformation had certain advantage.Crumb rubber asphalt mixture is worth popularizing owing to its profit of saving energy.Relating treatment of pictures got a series data of strain and displacement.Then some data was imported to MATLAB program.Draw out the corresponding strain and displacement nephograms.Nephograms was analyzed.In the loading strain and displacement of specimens of waster rubber powder modified asphalt mixture was got.