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Concrete with alkali slag as admixture and preparation method thereof

A technology of concrete and admixtures, which is applied in the field of construction industry, can solve problems such as undeveloped effective research, and achieve the effects of good market development space, small pores, and improved wear resistance

Active Publication Date: 2016-04-13
深圳市固亿建材水泥制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the use of alkali slag as a concrete admixture has not yet been effectively studied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Prepare commercial concrete according to the following steps

[0020] (1) Material pretreatment: Dry the industrial alkali slag in an oven at 105°C for 4 hours, and then crush it, with a density of 0.87g / cm 3 , moisture content 25%, fineness modulus 1; clean the stones, dry them at 105°C for 4 hours, and screen out flake and needle-shaped stones, the crushing index value of the stones is not less than 20%; dry the sand at 105°C Dry treatment for 4 hours, the fineness modulus is 2;

[0021] (2) Mixing: Take solid materials according to weight percentage: 49% of stones, 25% of sand, 14% of ordinary Portland cement, 5% of industrial alkali slag, and put all components of the solid materials into the mixer for 3 minutes to fully stir, then Slowly add 7% of tap water according to the weight percentage, and continue to stir for 2 minutes to obtain commercial concrete.

Embodiment 2

[0022] Embodiment 2: Prepare commercial concrete according to the following steps

[0023] (1) Material pretreatment: Dry the industrial alkali slag and dry it in an oven at 105°C for 5 hours, then crush it, with a density of 0.9g / cm 3 , moisture content 23%, fineness modulus 1.15; clean the stones, dry them at 105°C for 5 hours, and screen out flake and needle-shaped stones, the crushing index value of the stones is not less than 20%; dry the sand at 105°C Dry treatment for 5 hours, the fineness modulus is 2;

[0024] (2) Mixing: Take solid materials according to weight percentage: 45% of stones, 29% of sand, 10% of slag Portland cement, 8% of industrial alkali slag, put all components of solid materials into the mixer and stir for 4 minutes, then Slowly add 8% of tap water according to the weight percentage, and continue to stir for 2.5 minutes to obtain commercial concrete.

Embodiment 3

[0025] Embodiment 3: Prepare commercial concrete according to the following steps

[0026] (1) Material pretreatment: dry the industrial alkali slag and dry it in an oven at 105°C for 6 hours, then crush it, with a density of 1g / cm 3 , moisture content 20%, fineness modulus 1.3; clean the stones, dry them at 105°C for 6 hours, and screen out flake and needle-shaped stones, the crushing index value of the stones is not less than 20%; dry the sand at 105°C Dry treatment for 6 hours, the fineness modulus is 2;

[0027] (2) Mixing system: Take solid materials according to weight percentage: 45.5% of stones, 27% of sand, 12% of fly ash cement, 10% of industrial alkali slag, put all components of solid materials into the mixer and stir for 5 minutes, then press Slowly add 5.5% of tap water by weight, and continue to stir for 3 minutes to obtain commercial concrete.

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Abstract

The invention discloses a concrete containing alkali residue as an admixture and a preparation method thereof. The concrete is prepared by mixing the following components in percentage by weight: 45%-49% of pebble, 25%-29% of sand, 10%-14% of cement, 5%-10% of alkali residue and 5.5%-8% of water. The preparation method comprises the following steps of: drying industrial alkali residues in the sun; drying the industrial alkali residues for 4-6 hours at 105 DEG C in an oven and crushing the industrial alkali residues; cleaning the pebbles; drying pebbles at 105 DEG C for 4-6 hours; screening and taking out flake-like and needle-like pebbles; drying the sand for 4-6 hours at 105 DEG C; weighing solid materials in percentage by weight; completely stirring all the solid materials for 3-5 minutes in a stirrer; slowly adding running water in percentage by weight into the stirrer; and continuously stirring for 2-3 minutes to obtain a commercial concrete. As industrial waste residues are used as a concrete admixture, the concrete is light and hard; endurance characteristics, such as high compressive strength, frost resistance and wearing resistance meet the standard requirements; the shrinkage performance of the concrete is superior to that of a common concrete; and the heat insulation performance of the concrete can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of construction industry, and more specifically relates to a concrete with industrial alkali slag as an admixture and a preparation method thereof. Background technique [0002] Concrete is mainly made of sand and stone as aggregates, mixed with water in a certain proportion, and cement concrete obtained by mixing, molding and curing. my country's building energy consumption accounts for 35% of the total energy. Compared with developed countries, building energy consumption is 3 to 4 times that of developed countries. The rapid development of my country's civil engineering industry is bound to bring serious environmental damage and energy consumption. Therefore, scholars all over the world continue to study in order to partially or completely replace cement with industrial waste, which not only greatly reduces the use of cement, but also recycles waste that should have been discarded, which is of great sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B28/08C04B28/00C04B22/10C04B38/00
Inventor 张渊蒋海斌王颖丽
Owner 深圳市固亿建材水泥制品有限公司
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