Q: how does the putty bubble and hollowing happen? How should we handle it?Answer: Putty layer is empty and bubbly, the main reason is that there is gas between the base layer and the putty layer, and why the air does not diffuse to the surface layer and to the base layer according to the normal internal diffusion, and appear in the middle, the main reasons are as follows: improper treatment of the base layer, so that the putty layer and the base…

1. Improve bonding strength and cohesion.It is necessary to add redispersible latex powder in cement dry mortar products. It is very obvious to improve the bonding strength and cohesion of materials. This is due to the penetration of polymer particles into the pores and capillaries of cement matrix and the formation of good cohesive strength after hydration of cement. Moreover, due to the excellent adhesion of polymer resin itself, the adhesive f…

The Tokyo Preparatory Committee for the 2020 Olympic and Paralympic Games has released a concept map of the new National Stadium as the main venue for the Tokyo Olympic Games.The IOC plenary session voted in Buenos Aires, Argentina, September 7, to elect the host city for the 2020 Summer Olympics. Tokyo, Japan, defeated Madrid, Spain, and Istanbul, Turkey, to host the 2020 Summer Olympics.It is understood that Japan's New National Stadium eff…

PTFE membrane material is durable and can be used for more than 30 years.PTFE membrane material is the preferred material for permanent building.PTFE membrane material -- Super self cleaning, fireproof materialPTFE membrane materials -- specialized processing technology and strict construction proceduresMembrane materials commonly used in membrane structures. PTFE membrane material is a kind of composite material which is coated with PTFE (polyte…