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Heavily-doped steel slag foam concrete building block and preparation method thereof

A technology of foam concrete and large dosage, which is applied in the field of building wall materials to achieve the effect of reducing project cost and optimizing environmental benefits

Active Publication Date: 2015-02-25
SHOUGANG CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of foamed concrete with a large amount of steel slag is still in the exploratory stage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of the large-volume steel slag foam concrete block provided by the invention comprises:

[0019] 1. Use a high-speed foaming machine to foam. The specific operation is as follows: Weigh the foaming agent used in the experiment, and mix the foaming agent and water at a ratio of 1:30 in parts by mass to obtain a foaming agent solution, add the foaming agent solution into the foaming machine to make foam, and The size of the foam is uniform, small, good and stable, subject to the fact that there is no bleeding at the bottom of the container. The time required for brewing is about 4 minutes.

[0020] 2. Preparation of foam concrete and curing of test blocks

[0021] 1) Preparation and mixing of slurry

[0022] The dry material of each component is put into the mixer for 1 minute to make the dry powder mix evenly, and then pour Add 40 parts by mass of water, fully mix uniformly, and obtain a mixed slurry in a flowing state.

[0023] The cement is ...

Embodiment 2

[0029] The preparation method of the large-volume steel slag foam concrete block provided by the invention comprises:

[0030] 1. Use a high-speed foaming machine to foam. The specific operation is as follows: Weigh the foaming agent used in the experiment, stir the foaming agent and water at a ratio of 1:35 by mass and number to obtain a foaming agent solution, add the foaming agent solution into the foaming machine to make foam, and The size of the foam is uniform, small, good and stable, subject to the fact that there is no bleeding at the bottom of the container. The time required for brewing is about 4 minutes.

[0031] 2. Preparation of foam concrete and curing of test blocks

[0032] 1) Preparation and mixing of slurry

[0033] The dry materials of each component are put into the mixer for 1 minute to make the dry powder mix evenly, and then pour Add 45 parts by mass of water, fully mix uniformly, and obtain a mixed slurry in a flowing state.

[0034] The cement is...

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Abstract

The invention relates to a heavily-doped steel slag foam concrete building block and a preparation method thereof. The preparation method of the concrete building block comprises the following steps: evenly mixing slurry and a foaming agent solution, forming, demolding, and curing. The slurry comprises the following components in parts by weight: 50-150 parts of cement, 20-60 parts of steel slag, 10-60 of water, 0-8 parts of early-strength admixture, 0-3 parts of setting accelerator, 0-1.5 parts of fiber, 0-5 parts of water reducing agent and 0-5 parts of excitant. The foaming agent solution is formed by mixing a foaming agent and water in a mass ratio of 1:20-1:50 and then foaming. The volume of the foam generated by foaming the foaming agent solution is 20-100 times of the volume of the slurry. The excitant is desulfurized gypsum. In the invention, the heavily-doped extrafine steel slag powder is used for preparing the foam concrete building block, thereby implementing physical excitation of the activity of the steel slag, and avoiding the simple filling function of aggregate; and meanwhile, the desulfurized gypsum is added as the chemical excitant, thereby enhancing the properties of the concrete building block, solving the problem in treatment of desulfurizing slag, and changing wastes into valuable substances.

Description

technical field [0001] The invention relates to building wall materials, in particular to a large-volume steel slag foam concrete block and a preparation method thereof. Background technique [0002] Steel slag is the waste slag discharged from the steelmaking industry. In recent years, my country's iron and steel industry has developed rapidly. According to incomplete statistics, China's steel slag output is about 15%-20% of crude steel, and its comprehensive utilization rate is only about 22%. How to realize the large-scale and high-value utilization of steel slag has become the main research direction for the development of circular economy technology in my country's iron and steel industry. [0003] Steel slag contains a mineral composition similar to Portland cement clinker, and is currently used as aggregate in the field of ordinary concrete to a certain extent, such as in the patent No.: CN102173671A "High-strength and high-permeability steel slag concrete products a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B38/00C04B18/14
CPCY02W30/91
Inventor 廖洪强赛音巴特尔余广炜邓德敏贺婷何冬林田明阳时朝昆
Owner SHOUGANG CORPORATION