Preparation of Modified Silane Composite Emulsion and Its Effect on Surface Properties of Cement-Based Materials

A new type of waterproofing composite emulsion with high silane content and good economic efficiency was synthesized by sol synthesis. The effects the amount proportion compound emulsifier, tetraethyl orthosilicate, mixing time on properties emulsifier were investigated. optimum conditions for synthesis a orthosilicate/isobutyl triethoxysilane determined. characterized infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy, energy-dispersive spectrometry, along series microscopic testing techniques. It verified that coated surface paste to form hydrophobic protective layer. results show can achieve permeability impervious effect after coating concrete material, microhardness tests prove will not reduce hardness cement-based materials.