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Modified phosphorous slag powder, concrete prepared from modified phosphorous slag powder and preparation method of concrete

A technology for phosphorus slag powder and concrete is applied in the field of concrete, which can solve the problems of long retardation time and low early strength, and achieve the effects of reducing cement consumption, improving work performance and reducing costs.

Active Publication Date: 2014-04-30
北京东方建宇混凝土科学技术研究院有限公司
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Problems solved by technology

[0007] What the present invention aims to solve is that when phosphorus slag is used in concrete, there are problems such as long retarding time and low early strength, and a modified phosphorus slag powder that can effectively solve the problem of concrete retardation and the preparation of the modified phosphorus slag powder are provided. Concrete Gauge Method of Concrete Preparation

Method used

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  • Modified phosphorous slag powder, concrete prepared from modified phosphorous slag powder and preparation method of concrete

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] The modified phosphorus slag powder A described in this embodiment is made of the following materials: the specific surface area of ​​100kg is 400m 2 / kg of phosphorus slag powder, 0.2kg of sodium citrate, and 0.7kg of cationic starch.

Embodiment 2

[0043] The modified phosphorus slag powder B described in this embodiment is made of the following materials: the specific surface area of ​​100kg is 500m 2 / kg phosphorus slag powder, 0.5kg sodium tartrate, 1.0kg cationic starch.

Embodiment 3

[0045] The modified phosphorus slag powder C described in the present embodiment is made of following materials: the specific surface area of ​​100kg is 450m 2 / kg phosphorus slag powder, 0.35kg sodium gluconate, 0.7kg quaternary ammonium cationic starch.

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Abstract

The invention provides a modified phosphorous slag powder, a concrete prepared from the modified phosphorous slag powder and a preparation method of the concrete, and belongs to the technical field of concrete preparation. The modified phosphorous slag powder comprises a phosphorous slag powder, an organic salt and cationic starch. The organic salt and the cationic starch are used for modifying the phosphorous slag powder in stead of common chemical excitation carried out on the phosphorous slag by using an inorganic alkali activator in the prior art; when the modified phosphorous slag powder is used for preparing the concrete, the dosage of the modified phosphorous slag powder accounts for 38-70wt% of the total amount of the cementing material; the 3d compressive strength of the concrete ranges from 14.5 to 33.5MPa, and the 28d compressive strength of the concrete ranges from 30.6 to 77.3MPa, and the stability of the concrete is good; the utilization rate of the phosphorous slag powder is greatly reduced while the cost of the concrete is reduced, and therefore, the environmental pollution problem caused by the phosphorous slag can be reduced.

Description

Technical field [0001] The present invention involves a modified phosphorus powder and the concrete and concrete system prepared by the modified phosphorus powder, which belongs to the field of concrete technology. Background technique [0002] Phosphorus residue is an industrial waste residue produced in the process of yellow phosphorus in the process of electrical furnace. When using the electric furnace legal system to take yellow phosphorus, the melting of calcium silicate as the main ingredient is obtained.Slag, referred to as phosphorus slag for short.Usually, every tonnage yellow phosphorus is produced, about 8-10 tons of phosphorus residue. If the phosphorus generated is not used, it is stacked in open -air places for many years.The soil causes environmental pollution.In order to reduce the pollution of the phosphorus residue to the environment, the existing technology often uses phosphorus slag as a mixture in cement or concrete.When the phosphorus slag is used as raw ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/04C04B28/00
CPCY02W30/91
Inventor 段遵莉武俊宇龚晓莹章伟伟王安岭杨玉根李习章张京涛
Owner 北京东方建宇混凝土科学技术研究院有限公司
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