Preventing hollowing and cracking of premixed mortar(Ⅲ)
6.Requirements for interface agents The requirements for interface agents are mainly reflected in two degrees. The first is bonding strength (according to JC/T907-2002 "Concrete Interface Treatment Agent", the tensile bonding strength is not less than 0.5Mpa); The second is roughness (according to Appendix G of DBJ/T15-111-2016 "Technical Management Regulations for the Production and Application of


