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High-strength anti-crack concrete and preparation method thereof

A concrete and high-strength technology, applied in the field of concrete and its preparation, can solve the problems of low compressive strength and easy cracking, and achieve the effects of enhancing compressive strength and cracking strength, improving expansion effect, and slowing expansion speed.

Inactive Publication Date: 2017-11-10
宿松县尚鼎建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide concrete and preparation method thereof, to solve the problems of low compressive strength and easy cracking in the above-mentioned background technology

Method used

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  • High-strength anti-crack concrete and preparation method thereof
  • High-strength anti-crack concrete and preparation method thereof
  • High-strength anti-crack concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] At 20-30°C, crush the stones to 950kg / m 3 , cement 250kg / m 3 , sand 650kg / m 3 , water 155kg / m 3 , Admixture 10-16kg / m 3 , Concrete expansion agent 10kg / m 3 and fly ash 75kg / m 3 Mix and stir for 10-20 minutes to make concrete product A1, wherein the mud content of the stone is ≤5%, the mud content of the sand is ≤3%, and the admixture is composed of the following raw materials in parts by weight : 50-65 parts of polycarboxylate water reducing agent, 2-8 parts of silicon carbide, 2-5 parts of hollow glass microspheres, 8-15 parts of silicon dioxide coated titanium dioxide and 1-5 parts of gelatin powder; The concrete expansion agent is composed of the following raw materials in parts by weight: 16-24 parts of calcium aluminosilicate, 22-35 parts of calcium sulfoaluminate, 5-9 parts of iron sulfate, 15-22 parts of sulfur-fixing waste residue, and 8-15 parts of red mud , 8-15 parts of modified calcium oxide, 4-6 parts of magnesium oxide, 5-9 parts of acrylic acid emul...

Embodiment 2

[0040] At 20-30°C, crush the stones at 1030kg / m 3 , Cement 350kg / m 3 , sand 680kg / m 3 , water 185kg / m 3 , Admixture 10-16kgkg / m 3 , Concrete expansion agent 14kg / m 3 and fly ash 65kg / m 3 Mix and stir for 10-20 minutes to make concrete product A2, wherein the mud content of the stone is ≤5%, the mud content of the sand is ≤3%, and the admixture is composed of the following raw materials in parts by weight : 50-65 parts of polycarboxylate water reducing agent, 2-8 parts of silicon carbide, 2-5 parts of hollow glass microspheres, 8-15 parts of silicon dioxide coated titanium dioxide, 1-5 parts of gelatin powder; The concrete expansion agent is composed of the following raw materials in parts by weight: 16-24 parts of calcium aluminosilicate, 22-35 parts of calcium sulfoaluminate, 5-9 parts of iron sulfate, 15-22 parts of sulfur-fixing waste residue, and 8-15 parts of red mud , 8-15 parts of modified calcium oxide, 4-6 parts of magnesium oxide, 5-9 parts of acrylic emulsion ...

Embodiment 3

[0042] At 20-30°C, the stone is 1000kg / m 3 , the cement is 265kg / m 3 , the sand is 650kg / m 3 , water is 174kg / m 3 , the admixture is 10.21kg / m 3 , the concrete expansion agent is 12.56kg / m 3, fly ash is 74.30kg / m 3 Mix and stir for 10-20 minutes to make concrete product A3, wherein the mud content of the stone is ≤5%, the mud content of the sand is ≤3%, and the admixture is composed of the following raw materials in parts by weight : 50-65 parts of polycarboxylate water reducer, 2-8 parts of silicon carbide, 2-5 parts of hollow glass microspheres, 8-15 parts of titanium dioxide coated with silicon dioxide, 1-5 parts of gelatin powder; The concrete expansion agent is composed of the following raw materials in parts by weight: 16-24 parts of calcium aluminosilicate, 22-35 parts of calcium sulfoaluminate, 5-9 parts of iron sulfate, 15-22 parts of sulfur-fixing waste residue, and 8-15 parts of red mud , 8-15 parts of modified calcium oxide, 4-6 parts of magnesium oxide, 5-9 ...

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Abstract

The invention discloses high-strength anti-crack concrete and a preparation method thereof. The high-strength anti-crack concrete comprises cement, sand, pebble, water, additives, a cement expansive material and coal ash, wherein the ratios of the raw materials are as follows: 900-1050kg / m<3> of pebble, 250-350kg / m<3> of cement, 630-700kg / m<3> of sand, 150-180kg / m<3> of water, 10-16kg / m<3> of the additives, 8-15kg / m<3> of the cement expansive material and 60-80kg / m<3> of coal ash. The materials are fed and stirred according to formulae, and then different types of concrete are prepared. Due to addition of the concrete expansive material and t he coal ash, the compressive strength and the internal bonding strength of concrete are improved, the crack rate of the concrete is reduced, furthermore the bearing capacity of the concrete is increased, and the service life of the concrete is prolonged.

Description

technical field [0001] The invention relates to concrete and a preparation method thereof, in particular to a concrete with high compressive strength and not easy to crack and a preparation method thereof. Background technique [0002] The preparation of concrete in the prior art is only prepared by mixing cement, sand, stones, water and water reducing agent. The advantages of such concrete are high compressive strength, easy material acquisition, easy molding, low price, and can be combined with steel It is made into various load-bearing components, but its Achilles' heel is low compressive strength and easy cracking, which reduces the bearing capacity of the concrete structure and shortens its service life, becoming a hidden danger of various disasters. Contents of the invention [0003] The object of the present invention is to provide concrete and preparation method thereof, to solve the problems of low compressive strength and easy cracking in the above-mentioned back...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B111/34
CPCC04B28/02C04B2111/343C04B2201/50C04B14/02C04B14/06C04B18/08C04B14/324C04B14/22C04B14/305C04B20/002C04B22/08C04B22/14C04B22/149C04B22/064C04B22/066C04B24/26C04B24/38C04B14/106C04B18/0409C04B18/04C04B24/02C04B24/085C04B24/2623C04B24/383C04B2103/302C04B20/0076C04B22/141
Inventor 张小军
Owner 宿松县尚鼎建材有限公司
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