高分子抗裂贴拉伸强度特性试验研究

高分子抗裂贴能有效抵抗层间裂缝处拉应力，限制裂缝宽度发展，对沥青路面局部结构层可起到加筋的作用。考虑抗裂贴试样不同宽度、不同拉伸速率、不同夹持标距以及不同表层土工织物对其拉伸特性的影响，采用微机控制电子万能试验机对其进行了试验研究。试验结果表明:抗裂贴试样随着宽度的增长，拉伸强度逐渐减小且变化显著;随着拉伸速率的不断增加，抗裂贴的拉伸强度逐渐增大;夹持标距对抗裂贴拉伸强度的影响规律性不明显;表层土工织物的性质对抗裂贴的拉伸强度影响较大。

Tensile Strength Properties of High Polymer Anti-crack Paste

High polymer anti-crack paste could reinforce local structural layer of asphalt pavement by effectively re-sisting the tensile stress at the crack of the layer and controlling the crack width.In this article,the influences of width,tensile rate,clamping distance and surface fabric on the tensile properties of crack paste samples were stud-ied with electronic universal testing machine controlled by microcomputer.Results showed that the tensile strength of polymer anti-crack paste decreased and changed remarkably with the increase of width,but increased gradually with the increase of tensile rate.Clamping distance had no obvious regular effect on the tensile strength of the crack paste;while the properties of surface fabric had large impact on the tensile strength of the crack paste.