building mortar
6.As for the improvement of ductility of masonry structure and the aseismatic performance of building, several factors were discussed, which consisted of the layout of building plane and building elevation, the building level number and height, the layout of vertical wall and cross wall, thus enhancing the intensity of mortar, ring beam, constructional column and the placement of horizontal reinforcing steel bar.
8.The author describes technique main points of styrofoam board construction for cast-in -situ concrete exterior wall outer thermal insulation of highrise building in such aspects as construction preparation, technological process, styrofoam insulation board bonding, anchor fixing ,sticking and pressing of grid clothing, finish mortar and so on, and points out problems needing attention.

