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DSD acid waste liquid modified superplasticizer

A high-efficiency water-reducing agent and acid waste liquid technology, applied in the field of water-reducing agent production, can solve the problems of low water-reducing rate, poor fluidity, low strength, etc., to avoid environmental pollution, enhance the effect and increase the space. blocking effect

Inactive Publication Date: 2018-11-13
SHANGHAI UNIV OF MEDICINE & HEALTH SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water reducing agents currently used in the market have the disadvantages of low water reducing rate, poor fluidity, and low strength, which cannot meet the requirements of the market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A DSD acid waste liquid modified high-efficiency water reducer, including the following raw materials in parts by weight:

[0029] Naphthalene series superplasticizer 50 parts

[0030] DSD acid industrial waste liquid 300 parts

[0031] 15 parts ammonium persulfate

[0032] 15 parts of mercaptopropionic acid.

[0033] The steps of its preparation method are as follows: add naphthalene series high-efficiency water reducer to the reaction kettle, heat to 90-105°C while stirring, then add initiator and chain transfer agent, then add DSD acid industrial waste liquid in 4 times, stir , heat preservation and aging for 4 hours, that is to say.

Embodiment 2

[0035] A DSD acid waste liquid modified high-efficiency water reducer, including the following raw materials in parts by weight:

[0036] Naphthalene series superplasticizer 55 parts

[0037] DSD acid industrial waste liquid 200 parts

[0038] Potassium persulfate 10 parts

[0039] 10 parts of mercaptoethanol.

[0040] The steps of its preparation method are as follows: add naphthalene series high-efficiency water reducer to the reaction kettle, heat to 90-105°C while stirring, then add initiator and chain transfer agent, then add DSD acid industrial waste liquid in 5 times, stir , heat preservation and aging for 2 hours, that is to say.

Embodiment 3

[0042] A DSD acid waste liquid modified high-efficiency water reducer, including the following raw materials in parts by weight:

[0043] Naphthalene superplasticizer 60 parts

[0044] DSD acid industrial waste liquid 150 parts

[0045] 20 parts hydrogen peroxide

[0046] Thioglycolic acid 5 parts.

[0047] The steps of its preparation method are as follows: add naphthalene-based high-efficiency water reducer to the reaction kettle, heat to 90-105°C while stirring, then add initiator and chain transfer agent, then add DSD acid industrial waste liquid in 3 times, stir , heat preservation and aging for 3 hours, that is to say.

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Abstract

The invention concretely relates to a DSD acid waste liquid modified superplasticizer. The superplasticizer includes the following raw materials, by weight: 50-60 parts of a naphthalene-based superplasticizer, 150-300 parts of DSD acid industrial waste liquid, 10-20 parts of an initiator, and 5-15 parts of a chain transfer agent. The DSD acid waste liquid modified superplasticizer provided by theinvention can effectively utilize waste and has obvious reinforcing effect on concrete.

Description

technical field [0001] The invention relates to the technical field of water reducer production, in particular to a DSD acid waste liquid modified high-efficiency water reducer. Background technique [0002] Concrete admixtures, referred to as admixtures for short, refer to substances that are added to improve the performance of concrete before or during the mixing of concrete. Because admixtures can effectively improve the performance of concrete and have good economic benefits, they have been widely used in many countries, and their application in engineering has attracted more and more attention, becoming an indispensable material in concrete. Among them, the water reducer is the most important admixture in concrete. It can reduce the mixing water consumption and improve the concrete strength under the condition that the workability of concrete and the amount of cement remain unchanged; or under the condition that the workability and strength remain unchanged. Next, save...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F212/32C04B24/16C04B103/30
CPCC04B24/163C04B2103/302C08F283/00C08F212/32
Inventor 张坤驰袁辉邵伟
Owner SHANGHAI UNIV OF MEDICINE & HEALTH SCI
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