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Environment-friendly concrete mixture and preparation method thereof

An environmentally friendly concrete and mixture technology, which is applied in the field of concrete processing to achieve the effect of reducing production costs

Inactive Publication Date: 2020-06-05
湖北广盛混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides an environmentally friendly concrete mixture, which solves the problem in the prior art that the treated wastewater generated during concrete processing needs to be transported to a special treatment plant The problem of harmless disposal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Crush the construction waste and dry-based concrete blocks to a particle size of 8mm, mix them with sludge, add them to a ball mill and grind them for 2 hours, and then export the waste materials for grinding; 300kg of large stones with a particle size of 80mm and 650kg of small stones with a particle size of 30mm , 450kg of coarse sand with a particle size of 8mm, 300kg of fine sand with a particle size of 4mm, 60kg of fly ash, 25kg of cement and 5kg of polycarboxylic acid with a water reduction rate of 26% were added to the mixer, and then 255kg of water was added and stirred for 2 hours. Then add 340kg of waste material for grinding, and continue to stir for 2 hours to obtain a concrete mixture; wherein, solid construction waste: dry basis concrete block: sludge = 3:1:2, and the water content of the sludge is 70%.

Embodiment 2

[0027] Except for the following content, all the other are consistent with embodiment 1, the specific difference is:

[0028] Replace the 26% water-reducing polycarboxylate with 1kg of 26% water-reducing polycarboxylate, 2kg of 18% water-reducing sulfamate and 2kg of 16% water-reducing naphthalenesulfonate mixture.

Embodiment 3

[0030] Except for the following content, all the other are consistent with embodiment 1, the specific difference is:

[0031] The 26% water reducing polycarboxylate was replaced with 2.5 kg of 18% water reducing sulfamate and 2.5 kg of 16% naphthalene sulfonate mixture.

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PUM

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Abstract

The invention provides an environment-friendly concrete mixture, which is prepared from the following components in parts by weight: 300 to 350 parts of aggregate, 600 to 650 parts of small stone, 450to 500 parts of coarse sand material and 250 to 300 parts of fine sand material, wherein the admixture comprises 60 to 120 parts of fly ash and 20 to 25 parts of cement; the additive comprises 5-12 parts of a water reducing agent; wherein the waste grinding slurry accounts for 20-30% of the aggregate, the waste grinding slurry comprises solid construction waste, dry-basis concrete blocks and sludge with the water content of 70-80% according to the proportion of (3-5): (1-3): (2-3), and meanwhile, the invention further provides a processing method of the mixture. The problem that in the priorart, sludge obtained after waste water generated during concrete processing is treated needs to be transferred to a special treatment factory to be subjected to harmless treatment is solved.

Description

technical field [0001] The invention relates to the technical field of concrete processing, in particular to an environmentally friendly concrete mixture and a preparation method thereof. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. [0003] Concrete mixture is an important building material in the modern construction industry, and its processing technology is particularly important. During the processing of concrete mixes, waste water containing chemicals is produced and needs to be treated before it can be discharged. W...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/00017C04B18/16C04B18/0418C04B14/02C04B14/06C04B18/08C04B2103/302
Inventor 匡玲
Owner 湖北广盛混凝土有限公司