Construction process and key points of foam concrete floor

Foam concrete floor construction is a kind of construction method with light weight, high strength and excellent thermal insulation performance. It is widely used in roof slope making, toilet backfill, floor heating backfill and other scenarios in construction projects. The following is a detailed construction process and precautions:

1. Preparation before construction
   Material preparation: Ensure that the quality of raw materials such as cement, foaming agent, sand, fly ash, etc. meets the standards and is within the validity period.
   Equipment inspection: Check whether the mixer, foaming machine, conveying pump and other equipment are operating normally and perform necessary maintenance.
   • Grassroots treatment: Clean up ground debris and floating dust to ensure that the base is flat and solid, and repair and wet it if necessary.
2. Preparation of foam concrete
   • Proportioning design: determine the density and strength of foam concrete according to the project demand, and the common range is 300-1200kg/m ³.
   • foam preparation: use a foaming machine to mix the foaming agent with water to generate a stable and fine foam. It is recommended to use compressed air method to improve foaming efficiency and quality.
   • Mixing: add cement, water, etc. into the mixer in proportion, add foam after mixing evenly, and continue mixing until the slurry is even.
3. Pouring and smoothing
   • Pouring method: evenly pour foam concrete onto the base layer through the delivery pump or manually, control the pouring height, and avoid layering or cavities.
   • Leveling treatment: Use a ruler or scraper to level the surface, ensuring a smooth and even surface. If necessary, perform grid treatment to improve stability.
4. Maintenance and quality inspection
   • Maintenance measures: After pouring is completed, timely water spraying maintenance should be carried out 2-3 times a day for more than 36 hours, or covered with a damp cloth to keep it moist. The maintenance time is generally 7-14 days.
   Quality inspection: After the maintenance is completed, check the surface flatness, whether there are cracks or peeling, and repair if necessary. Bulk density and compressive strength can be tested by retaining test blocks.
5. Precautions
   Equipment cleaning: ensure that the equipment is clean before and after construction to avoid impurities mixing into foam concrete.
   Environmental control: Adjust construction temperature and humidity according to weather conditions to avoid construction under extreme conditions.
   Construction progress: Reasonably arrange the construction time to avoid interruptions that may affect the quality of concrete.
6. The above steps can ensure the quality and performance of foam concrete floor construction, and give full play to its advantages of lightweight, high-strength, thermal insulation. For further understanding of foam concrete construction equipment or foam concrete mix design, please refer to relevant professional data.