Straw fiber reinforced foam concrete and preparation method thereof

Abstract

The invention discloses straw fiber reinforced foam concrete and a preparation method thereof, and belongs to the technical field of building materials. The straw fiber reinforced foam concrete comprises the following components by mass: 40-80 parts of a cementitious material; 1-20 parts of a fine lightweight aggregate; 0.05-0.6 part of straw fiber; 2-8 parts of a chemical foaming agent; 0.5-4 parts of a physical foaming agent; 0.02-0.14 part of a foam stabilizing agent; 0.1-0.8 part of a catalyst; 0.05-0.6 part of a thickening agent and 15-30 parts of water. The preparation method is as follows: mixing and stirring the cementitious material, the straw fiber and the thickening agent, then adding the water, the chemical foaming agent, the foam stabilizing agent and the catalyst, stirring to obtain a slurry mixture, then adding expanded vermiculite, stirring to obtain chemically foamed foam concrete; adding the physical foaming agent into the chemically foamed foam concrete, stirring, pouring into a mould, and demoulding after concrete is solidified and hardened to prepare the straw fiber reinforced foam concrete. The straw fiber reinforced foam concrete has a more uniform multihole structure, and the water proof, sound insulation and heat insulation effects are better than that of foam concrete in the prior art.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to straw fiber reinforced foam concrete and a preparation method thereof. Background technique [0002] Foamed concrete, also known as foamed cement, lightweight concrete, etc., is a new type of building energy-saving material that is waste-friendly, environmentally friendly, energy-saving, cheap and non-combustible. Its density generally fluctuates between 300-1200kg / m 3 Among them, because the foamed concrete contains a large number of closed small pores, it has good thermal insulation performance, which is not available in ordinary concrete. Usually the density level is 400 kg / m 3 The thermal conductivity of foamed concrete in the above range is between 0.08-0.27w / (m·k), and the thermal resistance is about 10-20 times that of ordinary concrete. The use of foam concrete as building wall and roof materials has good energy-saving effect. The polystyre...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the existing foam concrete, the present invention provides straw fiber reinforced foam concrete and a preparation method thereof