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Method for preparing phosphogypsum retardation setting high efficiency water reducing agent

A high-efficiency water reducer and phosphogypsum technology, which is applied in the field of building material manufacturing, achieves the effect of simple and easy preparation method and reduced construction cost

Active Publication Date: 2008-04-23
SINOHYDRO BUREAU 14 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, phosphogypsum modification has not been used in concrete or mortar mixing process, used as concrete admixture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0008] Example 1 Take the phosphogypsum retarding high-efficiency superplasticizer and carry out the concrete mixing test according to the weight % of cement at 3%. The product quality is the first-class product, and the test results are listed in Table 1.

example 2

[0009] Example 2 Take the phosphogypsum retarding high-efficiency superplasticizer and mix it into the concrete test according to the weight % of the cement amount as 5%. The product quality is first-class product, and the test results are listed in Table 1.

[0010] Table 1 Test results of retarded high-efficiency superplasticizer concrete

[0011]

example 3

[0012] Example 3 concrete pumping agent test:

[0013] Take phosphogypsum retarding water reducer, naphthalene series high-efficiency water reducer, and air-entraining agent in a ratio of 90:9.9:0.1 by weight to make a concrete pumping agent, and take phosphogypsum pumping agent according to the weight percentage of cement dosage is 5 % mixed into concrete to make concrete pumping agent for experimentation, the product quality is first-class, and the test results are listed in Table 2.

[0014] Table 2 Experimental results of phosphogypsum retarding high-efficiency superplasticizer concrete pumping agent

[0015]

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PUM

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Abstract

This invention relates to an ardealite slow-setting high efficiency water-reducing agent. The waste-residue from the ardealite industry is used as raw material, being modified by adding modifier, proceeded steps of: low temperature-drying, grinding into powder, adding surfactant and mixing to obtain this inventive product. When application, the product is mixed in concrete or mortar, increasing its water-reducing rate higher than the international standard by 12%, the final-set time being up to 24hrs, the compression strength at 28d>120%. It can lowers the cost of concrete or mortar with benefits of wastes reutilization and environmental-protection.

Description

[0001] One, technical field, the present invention relates to utilize phosphogypsum waste slag to manufacture concrete admixture, its formula and preparation method thereof, belong to the field of building material manufacture. 2. Background technology [0002] The retarding high-efficiency superplasticizer is an admixture widely used in concrete admixtures. It is an admixture that retards the setting and greatly reduces the amount of mixing water. With the development of basic construction, more and higher requirements are put forward for the performance of concrete. The high-performance water reducer has a high dispersion effect on cement and can better maintain the slump of concrete. Infiltration of such admixtures can make the concrete have high performance, and high-strength high-performance concrete can be obtained. The main components of existing retarding superplasticizers are mostly high molecular polymers and inorganic salts. Phosphogypsum slag is an industrial was...

Claims

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Application Information

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IPC IPC(8): C04B24/00C04B22/14
CPCC04B2103/24C04B40/0039
Inventor 杨丽炫
Owner SINOHYDRO BUREAU 14 CO LTD
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