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In this paper, the effect of waterproof processing method on properties of calcium silicate board was studied in view of the requirement of calcium silicate board for building external wall. Experiments adopted waterborne epoxy resin in the test to do waterproof processing by three ways, which means taking the measure of waterproof processing respectively on two surfaces of the sample, on two surfaces and two lateral faces of the sample, and on all the six surfaces of the sample. The results showed that the sample could easily get wet from the side to the center, and it could only get satisfactory results when taking waterproof processing on all the six surfaces of the sample. Meanwhile, the water absorption rate of the sample decreased from 18.4% to 4.4% and its bending strength significantly got improved even after that the sample was treated separately by freeze-thaw cycles, dry-wet circulation, and soaking in hot water. Moreover, the performance of moisture deformation of the sample got reduced.

This study selected high alkali aluminosilicate glass as the research object. It’s belongs to the SiO2-Al2O3-RO-R2O glass system. By changing the content of Al2O3 in the SiO2-Al2O3-RO-R2O glass system, designed five basic glass formula. Using conventional melting method prepared the high alkali aluminosilicate glass. In the case of the same heat treatment, the glass formulations are the most important factor in the glass surface tension. Using the glass surface tension measuring instrument, focus on the content of Al2O3 on the glass surface tension’s effects law. The results show that the high alkali aluminosilicate glass’s surface tension are increase with the increase of Al2O3 content. The relation between glass surface tension and the content of Al2O3 conforms to the formula Y=290+6.5WAl2O3, Al2O3 factors influence the surface tension of the glass is 6.5.

In the paper, regarded SiO2-Al2O3-B2O3-RO system as basic composition, high-temperature glass glaze was prepared successfully by using Bi2O3 in place of Al2O3, and traditional melt annealing method was adopted .The influence of Bi2O3 on expansion coefficient, sintering temperature, electrical resistivity was investigated by DIL-2008, SJY sintering imager, Keythley2410. The results show that the sintering temperature of glass glaze has a wide range, which can reach 270oC, so it is easy to sinter; with the increasing of bismuth oxide content, expansion coefficient of glass glaze gradually increases, whereas sintering temperature and electrical resistivity continuously decreases.