Light-weight heat-insulating concrete and preparation method thereof

Abstract

The invention provides light-weight heat-insulating concrete. One cubic meter of the concrete is prepared by uniformly stirring following raw materials: 350-410 kg of cement, 12-30 kg of micro silicon powder, 32-50 kg of coal ash, 172-220 kg of sand, 220-300 kg of ceramic sand, 274-335 kg of haydite, 5-10 kg of additives and 135-145 kg of water. The invention also provides a preparation method of the light-weight heat-insulating concrete. By utilization of the haydite and a cementing formula, the concrete has good thermal insulation performances itself. The concrete can be used as building outer walls so as to cancel an independent thermal insulation layer, thus simplifying thermal insulation structures of the building outer walls, shortening the project duration, and reducing the cost.

Description

technical field

[0001] The invention relates to the field of building materials, more specifically, to a lightweight heat-insulating concrete and a preparation method thereof. Background technique

[0002] In existing buildings, a separate insulation layer composed of insulation mortar or XPS, EPS, rock wool and other insulation materials is usually used inside or outside the wall to achieve heat insulation. For example, prefabricated walls generally use insulation materials such XPS, EPS and other materials are placed in the middle of the wall or thermal insulation materials are placed at the formwork, and are produced by reverse punching process. However, the above-mentioned wall insulation structure process is relatively complicated, there are many types of supporting materials, and the construction requirements are high. Moreover, the fire performance of some insulation materials cannot meet the requirements of Class A, and the entire insulation system is affected by ma...

Images