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In this paper, a new early strength tile adhesive is prepared by using α- high strength gypsum and its properties are discussed. The research methods refer to relevant Chinese standards. The results show that the tensile bond strength of the adhesive can reach 0.6 MPa in one day and 1.5 MPa in 7 days, which is close to 80% of 28-day strength. It is indicating that the adhesive has high bond strength, rapid strength development, and high dimensional stability. It effectively solves the problems that the traditional cement-based tile adhesive is prone to hollowing, falling off, and cracking. Additionally, no interface treatment is required during the using process of this gypsum-based adhesive.

In this paper, the tensile bond performance of different bonding mortars for lightweight composite boards of autoclaved aerated concrete which can be prefabricated in factory is studied. The performance requirements of bonding mortar for the composite boards are proposed. The research methods refer to relevant Chinese standards. The results indicate that the tensile bond strength of bonding mortars for the lightweight aerated concrete substrates varies with the curing age increasing. The special bonding mortar for prefabricated composite board of light weight aerated concrete should have the characteristic of early and relatively high strength in a short curing age. And its early tensile bond strength should not be less than 0.35MPa in 3 hours.