渗透结晶型防水剂对水泥基材料自修复性能的影响及其机理研究

The Influence of Cementitious Capillary Crystalline Waterproofing Admixtures on the Self-healing Performance of Cementitious Materials and Its Mechanism Research

为了明确水泥基渗透结晶型防水剂对水泥基材料自修复性能的影响,研究了防水剂掺量为0、1%、2%、3%时砂浆试块裂缝的自愈合过程,并利用XRD、SEM、FT-IR等手段分析了防水剂中的活性物质以及自修复产物的主要成分、晶相和微观形貌,提出了其对水泥基材料自修复作用机理,对其在工程中的应用以及国内自主研发该类产品具有一定的借鉴作用。

In order to clarify the effect of cementitious capillary crystalline waterproofing admixture on the self-healing performance of cementitious materials, the self-healing process of cracks in mortar samples was studied when the amount of waterproofing admixture was 0, 1%, 2% and 3%. Furthermore, XRD, SEM, FT-IR and other characterization methods were used to analyze the main components of the activated chemical additive in the cementitious capillary crystalline waterproofing admixture, crystal phases and micro-morphologies of self-healing products were aslo investigated. Finally, the self-healing mechanism of the materials was proposed, which had a certain reference to the applications and domestic research of such products.