Construction of handmade rock wool board in external wall insulation

With the development of the economy, a new energy-saving technology that the construction industry has produced in response to market demand is the external wall insulation construction technology. In order to promote the development of the construction industry, the external wall insulation construction technology must be improved. Construction is restricted by geography and climate during implementation. Therefore, different wall insulation materials should be selected for construction in different regions to adapt the insulation and thermal insulation functions of the materials to the local climate characteristics. Below, the editor will explore how to construct handmade rock wool boards in external wall insulation based on the application of handmade rock wool board external wall insulation technology in the main project of the plot. I hope it will be helpful to you. This project has one basement floor and two floors in part, with a construction area of ​​25481.10; the upper part consists of 8 towers of varying heights, with Building 1# being a 27-story commercial residential building with a height of 81.6m; Buildings 2-3 are 33-story commercial residential buildings with a height of 99.9m; Buildings 4-8 are 18-story commercial residential buildings with a height of 546m; the total construction area above ground is 59901.73Ⅱf. 2 Drawing design requirements The external wall insulation material of this project adopts 30ram thick semi-rigid hydrophobic rock wool board, with performance parameters as follows: dry density is 160ks/m; thermal conductivity ≤O.040W/(m·K); heat storage coefficient ≥0.7W/(·K); combustion performance is Class A; the project volume is 63000. The handmade rock wool board external wall insulation system consists of leveling layer, bonding layer, handmade rock wool board insulation layer, anti-cracking surface layer, reinforcement layer, anchors, finishing layer, etc.

The specific steps are as follows:

(1) Repair and level the brick wall (double-sided grouting) or concrete wall (a 500-wide galvanized steel wire mesh with a mesh size of 20x20 and a diameter of 1.0 is hung at the junction of the concrete beam-column wall and the brick wall);

(2) Leveling with two coats of 9-thick + 6-thick 1:3 polymer cement waterproof mortar;

(3) Full-bonding of 30-thick semi-rigid hydrophobic handmade rock wool board with a special adhesive and anchored to the base wall with anchor bolts;

(4) Lay alkali-resistant fiber mesh cloth in 8-thick polymer anti-cracking mortar;

(5) Polish and level the 2-thick flexible water-resistant putty twice;

(6) Apply 2-thick simulated stone paint to the surface (one coat of sealing primer and two coats of topcoat). 3 Key points for controlling external wall insulation construction 3.1 Model-first system Before large-scale construction, a model wall with the same materials, construction methods and processes should be made on site, and the project construction can only be carried out after necessary inspections and confirmation by relevant parties. During the construction of the handmade rock wool board exterior wall insulation system, protective measures such as moisture and water proofing should be taken. In the handmade rock wool board exterior wall insulation system, the anti-cracking surface layer should be applied in time after the handmade rock wool board is installed on the wall.
Draw the control line and hang the reference line

(1) According to the building facade design and external insulation technical requirements, the horizontal and vertical control lines of the external door and window openings, expansion joints, system deformation joints, decorative strips, etc. should be marked on the wall;

(2) Vertical reference lines should be hung at the positive and negative corners of the building's external walls and other necessary places, and horizontal lines should be marked at appropriate locations on each floor to control the verticality and flatness of the handmade rock wool board.

Pasting of handmade rock wool board

(1) The length of the handmade rock wool board should not be greater than 1200ram, and the width should not be greater than 600ram. It should be dry and the surface should be flat and clean;

(2) Before pasting, the bracket should be installed first, and the anti-corrosion treated metal bracket (or aluminum alloy base bracket) should be fixed to the base wall with galvanized anchor bolts; the discrete water slope height of the bottom bracket should not be less than 20ram, and the margin required for the settlement of the building structure should be left to avoid damage to the external wall insulation system.