Lightweight concrete, lightweight concrete prefabricated parts, preparation method thereof and construction material

Abstract

The invention provides lightweight concrete, a lightweight concrete prefabricated part, a preparation method thereof and building materials, and relates to the technical field of lightweight concrete. The lightweight concrete is mainly made of cement, ceramic particles passing through +8 mesh sieve, ceramic particles passing through -8 to +16 mesh sieve, ceramic particles passing through -16 mesh sieve and optional additives, wherein the ceramic particles Mainly made from waste of foamed ceramics. This lightweight concrete combines good mechanical and thermal insulation properties. The lightweight concrete prefabricated parts and building materials are mainly made of the above-mentioned lightweight concrete and therefore also have good mechanical properties and thermal insulation properties. The preparation method of the concrete prefabricated part has the advantages of simple process and convenient operation.

Description

technical field

[0001] The invention relates to the technical field of lightweight concrete, in particular to a lightweight concrete, a lightweight concrete prefabricated part, a preparation method thereof, and a building material. Background technique

[0002] Lightweight concrete is also called foamed concrete. Existing lightweight concrete usually introduces air or nitrogen, carbon dioxide, oxygen and other gases into the concrete slurry to form a large number of small closed pores to reduce the quality of the concrete. When making traditional lightweight concrete, it is easy to appear that the density of cement and other cementitious materials is high, and the density of foam is very small. The density of the two is very different. The foam will float on the aqueous solution of cementitious materials, and the two are not easy to mix together. question. Moreover, in actual production, the foam will be destroyed by the stirring action during the mixing process with the co...

Examples

Embodiment 1

[0069] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 450 parts of cement, 300 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 450 parts, 390 parts of ceramic particles through -16 mesh sieve, 2 parts of hydroxypropyl methylcellulose, 0.4 parts of carboxymethyl starch ether, 10 parts of heavy calcium, 12 parts of redispersible latex powder and 6.6 parts of defoamer share.

[0070] Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.

Embodiment 2

[0072] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 440 parts of cement, 310 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 440 parts, 400 parts of ceramic particles passed through -16 mesh sieve, 1.8 parts of hydroxypropyl methylcellulose, 0.5 parts of carboxymethyl starch ether, 9 parts of heavy calcium, 13 parts of redispersible latex powder and 6 parts of defoamer share.

[0073]Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.

Embodiment 3

[0075] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 450 parts of cement, 290 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 460 parts, 380 parts of ceramic particles passed through -16 mesh sieve, 2.2 parts of hydroxypropyl methylcellulose, 0.3 parts of carboxymethyl starch ether, 11 parts of heavy calcium, 11 parts of redispersible latex powder and 7 parts of defoamer share.

[0076] Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.

technical field

[0001] The invention relates to the technical field of lightweight concrete, in particular to a lightweight concrete, a lightweight concrete prefabricated part, a preparation method thereof, and a building material. Background technique

[0002] Lightweight concrete is also called foamed concrete. Existing lightweight concrete usually introduces air or nitrogen, carbon dioxide, oxygen and other gases into the concrete slurry to form a large number of small closed pores to reduce the quality of the concrete. When making traditional lightweight concrete, it is easy to appear that the density of cement and other cementitious materials is high, and the density of foam is very small. The density of the two is very different. The foam will float on the aqueous solution of cementitious materials, and the two are not easy to mix together. question. Moreover, in actual production, the foam will be destroyed by the stirring action during the mixing process with the co...

Examples

Embodiment 1

[0069] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 450 parts of cement, 300 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 450 parts, 390 parts of ceramic particles through -16 mesh sieve, 2 parts of hydroxypropyl methylcellulose, 0.4 parts of carboxymethyl starch ether, 10 parts of heavy calcium, 12 parts of redispersible latex powder and 6.6 parts of defoamer share.

[0070] Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.

Embodiment 2

[0072] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 440 parts of cement, 310 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 440 parts, 400 parts of ceramic particles passed through -16 mesh sieve, 1.8 parts of hydroxypropyl methylcellulose, 0.5 parts of carboxymethyl starch ether, 9 parts of heavy calcium, 13 parts of redispersible latex powder and 6 parts of defoamer share.

[0073]Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.

Embodiment 3

[0075] This embodiment provides a kind of lightweight concrete, which comprises the following raw materials in parts by weight: 450 parts of cement, 290 parts of ceramic particles passed through a +8 mesh sieve, and ceramic particles passed through a -8 to +16 mesh sieve 460 parts, 380 parts of ceramic particles passed through -16 mesh sieve, 2.2 parts of hydroxypropyl methylcellulose, 0.3 parts of carboxymethyl starch ether, 11 parts of heavy calcium, 11 parts of redispersible latex powder and 7 parts of defoamer share.

[0076] Among them, the cement is ordinary Portland cement, and the ceramic particles are obtained by crushing waste materials of foamed ceramics to the target particle size; the redispersible latex powder is copolymerized rubber powder of vinyl acetate and ethylene, and the defoamer is polyoxygen Ethylene polyoxypropylene pentaerythritol ether.