外加剂和掺和料对砂浆性能影响的研究

Research on Influences of Admixtures and Mixtures on Properties of Mortar

当前,在水工混凝土工程中,抹面砂浆的强度和抗渗性能越来越受到人们的重视。通过对比试验,研究了减水剂、引气剂单掺、复掺及与硅粉、粉煤灰复掺,对砂浆强度和抗渗性能的影响,并从机理方面分析它们改善砂浆性能的原因。结论是:减水剂、引气剂与硅粉、粉煤灰适当配比复掺,对砂浆的强度和抗渗性能的改善显著。

Today, in the field of hydraulic concrete engineering, the strengths and anti-permeability of plastered mortar have been paid more and more attention by people. Through a series of contrast experiments, the influences of the admixtures of water reducing agent and gas induced agent through adding into mortar by the ways of single mixing and complexes mixing, and mixtures of fly ash and silica fume, on the strengths and resistance to seepage of plastered mortar properties are studied. Furthermore, the mechanisms of improvement of mortar properties by admixtures and mixtures have been analyzed. The results show that the complex mixing way of adding water reducing agent and gas-induced agent is the best way to improve the properties of plastered mortar.