Construction Methods for Mobile Cement Toilet Walls

Common construction methods for mobile cement toilet walls include using light steel keel frames with cement boards, cement casting, or cement mortar plastering, with the specific choice depending on construction conditions and requirements.

1. Light Steel Keel Frame with Cement Boards

For temporary or modular mobile toilets, using a light steel keel frame with cement boards is a common approach. First, construct a light steel keel frame according to the wall dimensions, ensuring vertical and horizontal alignment meet standards. Next, fix cement boards (such as fiber cement boards or calcium silicate boards) onto the keels using self-tapping screws or specialized adhesive. Finally, fill the board seams to prevent cracking. This method offers fast construction, stable structure, and ease of maintenance or disassembly later.

2. Cement Casting for Walls

For mobile toilets requiring higher strength or permanence, cement casting is a superior option. First, create formwork (such as wooden or metal formwork) and secure it in place for the wall. Then, mix cement, sand, and water in the proper ratio (typically 1:2:3), pour the mixture into the formwork, and vibrate it to eliminate air bubbles. After the cement has set initially, remove the formwork and sand the surface to ensure flatness. This method produces a durable wall but has a longer construction period and requires specialized equipment.

3. Cement Mortar Plastering

If the mobile toilet already has a base wall (such as a brick wall or metal panel), cement mortar plastering can be applied directly. First, clean the wall of dust and grease, ensuring the substrate is dry. Next, mix cement and sand in a 1:6 ratio, adding an appropriate amount of water to create a uniform mortar. Apply the mortar in two to three layers, controlling each layer's thickness to 5-10 millimeters, and sanding it flat after drying before applying the next layer. Finally, finish the wall with a smoothing treatment to enhance aesthetics. This method is cost-effective but requires attention to waterproofing; it is recommended to apply a waterproof coating after plastering.

4. Waterproofing and Detail Handling

Regardless of the method used, waterproofing should not be overlooked. Cement itself is not waterproof, so a waterproof coating (such as polyurethane or acrylic) should be applied after the wall has dried, paying special attention to seams and areas where pipes penetrate the wall. Additionally, the junction between the wall and floor should be rounded to prevent water accumulation and penetration. If fixtures need to be installed, reserve fixing holes and seal them properly.