How to dry hang landscape wall stones?

You must have encountered these problems during the dry-hanging construction of landscape wall stones. This article provides feasible improvement methods and prevention measures for the above problems, such as the self-weight of stone, causing detachment, easy corrosion of holes, difficulty in dry hanging construction of irregular fragmented materials, and surface layer fragmentation or peeling. In recent years, the dry hanging technique of landscape wall stone has been widely used due to its unique artistic, contemporary, and construction advantages.

1、 Advantages Introduction

1. It can effectively avoid the phenomena of hollowing, cracking, and falling off of boards that occur in traditional wet pasting processes, and improve the safety and durability of buildings;

2. Effectively prevent salt alkali and other pigments from penetrating and contaminating the stone during grouting, and avoid discoloration and alkalization of the stone surface;

3. Less affected by climate change, avoiding stone detachment caused by thermal expansion and contraction, and reducing maintenance costs;

4. Each board is independently stressed, installed, and replaced, making construction flexible and convenient, with high construction efficiency.

2、 Existing problems and prevention measures

1. The stone has a significant weight and there is a problem of detachment

● Test the adhesion between flexible structural adhesive and steel plate

Using the method of drilling holes on the base steel plate to achieve the technique of using overflow glue to hook irregular landscape wall materials, ensuring the adhesion between the decorative material and the steel plate.

● Anti-peeling treatment on the back

Using multi-angle oblique cutting to form grooves on the back of the material, a torque hook form is formed when the structural adhesive fills the concave groove to increase the bonding force between the structural adhesive and the irregular surface layer material.

Difficulty in dry hanging construction of irregular fragmented materials

A. Drill holes install expansion bolts on the original building structure, and then fix the keel (angle steel or square steel) to the wall. Determine the installation density and depth to form a steel framework based on requirements and mechanical calculations.

B. Stamping 3-5mm galvanized thin steel plate into honeycomb plate, and determining the size and density of the holes based on the actual situation on site. The minimum area material is generally determined based on the average size of irregular surface decorative materials, and it is advisable to cover at least 5 voids to ensure the installation firmness of irregular surface decorative materials.

C On-site use stainless steel drill tail screws to fix the galvanized honeycomb steel plate onto the welded steel frame and apply flexible structural adhesive to the irregular surface decorative material. The position of pasting needs to be aligned and pressed down with force until some flexible structural adhesive overflows from the holes in the galvanized honeycomb steel plate.

D. After the installation of irregular surface decorative materials is completed, wait for the flexible structural adhesive to air dry and solidify, and use drill tail screws to reinforce some of the irregular surface decorative materials. The resulting surface holes are repaired with color-adjusted cement.

E. After coloring with adhesive cement, the gaps between irregular decorative materials on the surface layer are caulked.

3、 Surface layer breakage or peeling issues

Deepen the design, adjust the materials of the dry hanging structure, and use physical anchor bolts to fix the structural materials on the base structure of the irregular indoor and outdoor curtain wall dry hanging system. By fixing the hidden anchor bolts on the layered local surface, the surface material is anchored to the base steel plate to prevent the breakage and sagging of the surface material.

4、 Common dry-hanging methods

1. Back bolt type

The most commonly used dry hanging method for stone.

Advantages:

a. The boards are independently stressed and easy to replace;

b. Reliable connection and high seismic resistance;

C. Can accurately control the distance between the stone and the bottom of the hole;

d. Factory processing with small on-site workload

Disadvantage: The process of opening and expanding holes is complex and requires high requirements for stone materials.

2. Pallet type

Advantages: Simple process, no need for special tools, economical and convenient; Disadvantages: On-site operations require adhesive adjustment, and stone panels should not be removed or replaced.

3. Slotted type

Advantages: Simple process, high load-bearing capacity, no need for special tools. Disadvantage: The amount of slotting work is large, and the stone panel is not suitable for replacement. The panel should not be disassembled or replaced.

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