What is the mix ratio of polystyrene concrete?

‌ The mix of polystyrene concrete usually includes cement, sand and gravel, water, polystyrene particles and other additives. ‌

Specifically, the mix design of polystyrene concrete needs to consider the following main components and their proportions:

‌ Cement ‌: Ordinary Portland cement is one of the main components, and the dosage is usually between 300 and 600 kg per cubic meter, depending on the design requirements and engineering purposes ‌.

‌ Sand and gravel ‌: Fine aggregate usually uses medium sand or fine sand, while coarse aggregate can be crushed stone or pebbles. The ratio is usually sand: stone = 1:2 to 1:3 to ensure the workability and strength of concrete ‌.

‌ Water ‌: The amount of water is generally 40% to 60% of the cement mass, which directly affects the fluidity and strength of concrete ‌.

‌ Polystyrene particles ‌: As a lightweight aggregate, the volume of polystyrene particles accounts for 200% to 400% of the volume of water added, which helps to reduce the density of concrete and improve thermal insulation performance ‌.

‌Other additives‌: such as fly ash, water reducer, accelerator, etc., are used to improve the properties of concrete, such as fluidity, strength and durability‌.

When preparing polystyrene concrete, the following points should also be noted to ensure the construction quality and performance of the concrete:

‌Fully encapsulate polystyrene particles‌: Ensure the full encapsulation of polystyrene particles by controlling the amount of water and optimizing the order of adding materials‌.

‌Control the vibration time‌: Solve the problem of easy stratification during the construction of polystyrene concrete and ensure the uniformity of concrete‌.

‌Add wetting additives‌: Since the surface of polystyrene particles is hydrophobic, adding wetting additives can improve its bonding with cement‌.