This paper explores the feasibility of preparing non-curable rubber modified asphalt waterproofing coating with rubber powder. The results show that 80 mesh rubber powder can be used to prepare non-curable rubber modified asphalt waterproofing coating to meet the requirements of JC/T2428-2017. Because the crosslinking of rubber powder limits the kinematic ability of molecular chain

it can not give full play to the characteristics of linearized rubber. In order to fully realize these characteristics

the feasibility of using reclaimed tire rubber powder to prepare non-curable rubber modified asphalt waterproofing coating was explored. The results showed that the reclaimed rubber powder with the degree of desulfurization degradation (activation degree) of about 50% could be added in large proportion without affecting the non-curing properties. The optimum proportion is 15% reclaimed tire rubber powder

30% plasticizer

9% SBR

2%thermosensitive thixotropic agent and 60% talc powder with 100% asphalt. Because the small molecular components of reclaimed rubber powder are similar to plasticizers

quasi-linear macromolecular rubber components and toluene insoluble substances in the mechanism of action with SBR

the above-mentioned interaction can replace some plasticizers and SBR in the traditional scheme

and obtain excellent comprehensive physical properties.