A kind of flame retardant high temperature resistant concrete and preparation method thereof

Abstract

The invention discloses flame-retardant high-temperature-resistant concrete and a preparation method thereof. The flame-retardant high-temperature-resistant concrete is prepared from the following components in parts by weight: 30 to 40 parts of cement, 12 to 30 parts of clay clinker, 18 to 30 parts of water, 8 to 15 parts of magnesia, 2 to 3 parts of a water reducer, 5 to 10 parts of alumina, 1 to 2 parts of a modifier, 1 to 2 parts of graphene, 1 to 2 parts of a flame retardant agent, 0.1 to 0.4 part of hexenyl distearamide, and 0.05 to 0.3 part of polyethylene glycol. The used materials are simple and easy to obtained, the process is easy to control, the production cost is low, and the preparation method adapts to mass production; the ratio is reasonable, and the water reducer, the modifier and the flame retardant agent are formed through compounding, so that the compressive strength of the flame-retardant high-temperature-resistant concrete is significantly enhanced, the dry shrinkage rate is significantly decreased, and the water absorption rate per volume is decreased significantly; and in addition, the preparation method of the flame-retardant high-temperature-resistant concrete is simple and feasible, has no special requirements on equipment, and is simple to operate.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a flame-retardant and high-temperature-resistant concrete and a preparation method thereof. Background technique [0002] At present, residents have higher and higher requirements for the safety of residential houses and office buildings, and building materials are the main components of the whole building. The main building material used in structures in my country is concrete, and natural sand is its main fine skeleton. However, at present, natural sand is used in most areas. Natural sand belongs to local resources and is not renewable in the short term. With the increase of construction volume, the natural sand in many areas of our country is almost exhausted. At the same time, because the excessive exploitation of natural river sand will cause damage to the ecological environment, many places have strictly prohibited or restricted the mining of natural river sand, resulting ...

AI Technical Summary

Problems solved by technology

The main building material used in structures in my country is concrete, and natural sand is its main fine skeleton. However, most areas currently use natural sand, which belongs to local resources and is not renewable in the short term.

With the increase of construction volume, the natural sand in many areas of our country is almost exhausted. At the same time, because the excessive exploitation of natural river sand will cause damage to the ecological environment, many places have strictly prohibited or restricted the mining of natural river sand, resulting in the contradiction between the supply and demand of engineering sand. increasingly prominent

[0003] In the prior art, the commonly used concrete mainly has the following disadvantages: 1. With cement as the adhesive, the cohesive force is weak, the adhesion with the wall, coal mine roadway, tunnel, etc. is poor, the durability is poor, and it is easy to fall off; 2. The compressive strength and flexural strength of the insulation material are low, and the shear force and pressure received are easy to break and fall off

3. High cost; 4. The construction process is complicated, the construction period is long, and the maintenance period is long

In addition, organic materials have disadvantages such as low strength and short service life.

Although inorganic materials have other characteristics, their thermal insulation performance and waterproof performance are not good and their specific gravity is relatively large.

Therefore, composite materials are a better choice, but the composite materials in the prior art still do not meet the fire protection requirements, and the thermal conductivity is not high

[0005] To sum up, the current concrete does not have the comprehensive performance required by building construction or the cost is too high, and needs to be further improved. Therefore, it is particularly important to find a relatively low price and high comprehensive performance flame-retardant and high-temperature resistant concrete.

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