What happened when the tiles on the wall fell off?

Based on the analysis of the causes of wall tile sticking and falling off, the corresponding maintenance scheme is adopted to solve the problem of wall tile falling off and avoid similar problems in subsequent construction.

Tiles; Temperature difference; Fall off; heat expansion

1. Project overview

Tiantai Qingcheng Garden Project is located at the junction of Jiangjun Avenue and Focheng West Road in Jiangning Development Zone, Nanjing. The total construction area is 7 1495.54m2, invested by Jiangsu Tiantai Construction Co., Ltd. and designed by Nanjing Zhong Yi Architectural Design Co., Ltd., which started on August 25th, 2008 and was completed on September 26th, 20/kloc-0.

According to the requirements of the construction unit, the wall decoration is changed to 12mm thick ceramic tile, and the tile decoration size is constructed according to the requirements of the construction unit. In actual construction, the specific decoration scheme is declared by the construction team, and the construction is carried out after being approved by the supervisor and the construction unit. Among them, building 1 was pasted with cement mortar according to the original design practice, and building 2 was constructed by back hanging dry hanging method.

At the beginning of 20 1 1, some tiles on the wall of building 1 fell off, especially in the lobby, and some tiles in the front room of the shared floor fell off, but no tiles were found in building 2. According to the requirements of the property and Party A, repair the fallen tiles and paste the building glue cement mortar. By the beginning of 20 12, more wall tiles had fallen off in winter. Judging from the shedding of tiles, the adhesive layer and decorative layer on the back of tiles are in a peeling state. There are some radial cracks on the surface of bonding mortar, which are mainly located in the center of bonding mortar plate.

2. Cause analysis

The construction stage of wall tile is from July to August, with high temperature, but in winter.