聚合物钢纤维混凝土的增强机理分析

REINFORCED MECHANISM WITH THE POLYMER LATEX ADDED IN THE STEEL FIBRE REINFORCED CONCRETE

为探求聚合物乳胶在钢纤维混凝土中的作用机理 ,通过力学试验及用 Oxford L ink30 0能谱分析仪 (ES-CA)和 HITACHI S35 0 0 N系列电子扫描设备 (SEM) ,进行了一些初步的研究。研究表明 :聚合物对钢纤维混凝土的改性 ,存在着一个最佳掺量的问题 ,当聚合物掺量达到最佳值时 ,聚合物在钢纤维混凝土中扮演着“桥”的角色 ,通过这座“桥”把两个相互间只有物理吸附的相更强地连接起来 ,形成以化学吸附为主、物理吸附为辅的有机体 。

The reinforced mechanism of the polymer latex added in the steel fiber reinforced concrete was researched, based on mechanical experiments and photograph research of the electron spectroscopy of chemical analysis (ESCA) with Oxford Link300 and the scanning electron microscopy with HITACHI S3500N. The results show that there is an optimum content of the polymer added in the steel fiber reinforced concrete and when it is added to the optimum content, the polymer acts as a bridge; the bridge strengthens the physical absorption between the polymer latex and the steel fibre reinforced concrete originally and makes most of the physical absorption change into the chemical absorption, thus improving the material properties of the whole system.