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Polycarboxylate superplasticizer for reinforcing steel bar sleeve grouting material for prefabricated part and grouting material thereof

A steel sleeve and prefabricated component technology, applied in the field of polycarboxylate superplasticizer and its grouting material, can solve the problems of performance and cost impact, performance and cost impact, etc., to improve mechanical properties, good strength, and system dense effect

Active Publication Date: 2022-07-05
FUJIAN KZJ NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic grouting materials are generally composed of cementing components, superplasticized components, and preferred high-strength micro-aggregate, but their performance and cost have become bottlenecks affecting their development.
In particular, the water-reducing agent used has a great influence on its performance and cost. How to improve its performance and cost through the improvement of the water-reducing agent is an important problem to be solved urgently in the prior art

Method used

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  • Polycarboxylate superplasticizer for reinforcing steel bar sleeve grouting material for prefabricated part and grouting material thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] In parts by weight, weigh 1 part of water-soluble polyether-based polyurethane, 1 part of hydroxyethyl methyl cellulose ether, and 1 part of methyl methacrylate-butadiene-styrene polymer, and use 20° C. Dissolve warm water in the reaction vessel, stir for 20 minutes, keep stirring, add 63 parts of machine-made sand, 7 parts of molybdenum tailing sand, and 20 parts of 100-mesh beer bottle grinding powder in small amounts and several times, stir evenly for 20 minutes, and then add 70 parts of cement with a molecular weight of 30,000 MPEG-AMPS shrinkage-reducing polycarboxylate water-reducing agent with polyethylene glycol monomethyl ether and 2-acrylamido-2-methylpropanesulfonic acid block ratio of 4:1, and stirring for 15min to obtain the Reinforced sleeve dry powder grouting material for prefabricated components.

Embodiment 2

[0061] In parts by weight, weigh 2 parts of water-soluble polyester polyurethane, 2 parts of hydroxypropyl methyl cellulose ether, and 2 parts of acrylonitrile-butadiene-styrene polymer, dissolve them in warm water at a temperature of 30°C In the reaction vessel, stir for 15 minutes, keep stirring, add 68 parts of machine-made sand, 12 parts of molybdenum tailings sand, 25 parts of 150-mesh waste glass grinding powder in small amounts and several times, stir evenly for 25 minutes, and then add 80 parts of cement with a molecular weight of 40,000 and alkene. APEG-MAA shrinkage-reducing polycarboxylate water-reducing agent with a propyl polyoxyethylene ether and methacrylic acid block ratio of 5:1 was stirred for 15 minutes to obtain the steel sleeve dry powder grouting material for prefabricated components.

Embodiment 3

[0063] In parts by weight, weigh 2 parts of water-soluble polyester polyurethane, 2 parts of hydroxypropyl methyl cellulose ether, and 2 parts of acrylonitrile-butadiene-styrene polymer, and dissolve them in warm water at a temperature of 25°C. In the reaction vessel, stir for 20 minutes, keep stirring, add 68 parts of machine-made sand, 12 parts of molybdenum tailings sand, and 25 parts of 150-mesh waste glass grinding powder in small amounts and several times, stir evenly for 20 minutes, and then add 80 parts of cement with a molecular weight of 50,000 and A. TPEG-MA shrinkage-reducing polycarboxylate water-reducing agent with a block ratio of allyl polyoxyethylene ether and methacrylamide of 5:1 was stirred for 20 minutes to obtain the dry powder grouting material for steel sleeves for prefabricated components.

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Abstract

The invention belongs to the field of prefabricated part building materials, and particularly relates to a polycarboxylic acid water reducing agent for a reinforcing steel bar sleeve grouting material for a prefabricated part and the grouting material thereof. The polycarboxylic acid water reducing agent for the reinforcing steel bar sleeve grouting material for the prefabricated part is a modified polyether polymer and is composed of two of an MPEG-AMPS shrinkage-reducing polycarboxylic acid water reducing agent, a molecular weight APEG-MAA shrinkage-reducing polycarboxylic acid water reducing agent and a TPEG-MA shrinkage-reducing polycarboxylic acid water reducing agent. When the cement, the mixed sand and the glass powder exist, the shrinkage reducing type polycarboxylic acid water reducing agent can achieve the purpose of reducing shrinkage; the flexibilizer is added, so that existing expansion joints and movable joints can be treated, and the construction performance is good.

Description

[0001] This application is a divisional application of the application number CN201911349360.1 and the application date of December 24, 2019, "A Reinforced Sleeve Grouting Material for Prefabricated Components and Its Preparation Method". technical field [0002] The invention belongs to the field of prefabricated component building materials, in particular to a polycarboxylate water reducing agent used for grouting material of steel bar sleeves for prefabricated components and its grouting material. Background technique [0003] As the concept of green environmental protection becomes more and more popular, for the construction industry, the application of green building materials and green buildings is becoming more and more extensive. As the main means of building green development, steel sleeve grouting connection technology is involved in various fields such as industrial and civil construction, roads and bridges, underground engineering, marine engineering, and nuclear ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B111/70
CPCC04B28/02C04B2111/70C04B2201/50C04B2111/00706C04B2111/00017C04B24/282C04B24/383C04B24/2688C04B14/06C04B18/12C04B18/0427C04B14/22C04B24/28C04B24/26C04B24/2652Y02W30/91
Inventor 李格丽方云辉郭元强吴传灯
Owner FUJIAN KZJ NEW MATERIALS CO LTD
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