聚合物改性混凝土抗碳化性能试验研究

Experimental study on polymer modified concrete carbonation resistance

为研究不同聚合物掺量对混凝土抗碳化性能的影响，选择后掺法制作了聚灰比分别为0、5％、10％、15％、20％的5组混凝土试件，采用快速碳化试验测定不同碳化龄期时各组试件的碳化深度，并根据碳化深度经典模型建立了适用于聚合物改性水泥混凝土碳化深度模型；通过电镜扫描从微观角度分析碳化对聚合物改性混凝土的影响。经过试验得：当聚合物掺量在15％一20％时对混凝土的抗碳化性能改善效果最好。

To study the effects of different polymer content of concrete anti-carbonation properties.After selecting the rule of law were doped polymer-cement ratio of 0,5%, 10%, 15%, 20% of the five groups of concrete specimens, measured using different carbonization accelerated carbonation test method age groups specimen depth of carbonation and in accordance with the classical model the carbonation depth of polymer modified cement concrete carbonation depth model is suitable.Scanning electron microscopy carbonization of polymer modified concrete from the microscopic point of view.Test conclusion when the polymer content is about 15% to 20% of the carbonation resistance of concrete to improve the best.