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Polycarboxylate superplasticizer

A technology of water reducing agent and polycarboxylic acid, applied in the field of water reducing agent, can solve the problems of poor compatibility, difficult to effectively control the addition of polycarboxylic acid water reducing agent, low addition amount, etc., and achieves good stability and long-term performance. Anti-aging effect and effect of improving anti-aging performance

Active Publication Date: 2022-07-15
福州创先工程材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amount of polycarboxylate superplasticizers added to concrete is generally low, and the compatibility with other concrete admixtures is relatively poor, it is difficult to effectively control the addition of polycarboxylate superplasticizers

Method used

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  • Polycarboxylate superplasticizer
  • Polycarboxylate superplasticizer
  • Polycarboxylate superplasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Polycarboxylate water reducer 8kg, retarder 3kg (glycerol 2kg, sodium tripolyphosphate 1kg), thixotropic agent 0.01kg (fumed silica 0.01kg), foam stabilizer 0.05kg (xanthan gum 0.02kg) , polyvinyl alcohol 0.03kg), air-entraining agent 0.01kg (triterpenoid saponins 0.01kg), water balance.

Embodiment 2

[0044] Polycarboxylate water reducer 15kg, retarder 0.5kg (sodium tripolyphosphate 0.3kg, sodium citrate 0.2kg), thixotropic agent 0.1kg (magnesium aluminum silicate 0.05kg, bentonite 0.05kg), foam stabilizer 0.01 kg (polyacrylamide 0.01kg), air-entraining agent 0.05kg (sodium dodecylbenzenesulfonate 0.02kg, sodium dodecylsulfonate 0.03kg), water balance.

Embodiment 3

[0046] Polycarboxylate water reducer 11kg, retarder 1.5kg (glycerol 0.5kg, sodium tripolyphosphate 1kg), thixotropic agent 0.05kg (magnesium aluminum silicate 0.02kg, fumed silica 0.03kg), foam stabilizer agent 0.03kg (polyvinyl alcohol 0.01kg, polyacrylamide 0.02kg), air-entraining agent 0.03kg (triterpenoid saponin 0.01kg, sodium dodecylbenzene sulfonate 0.02kg), water balance.

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Abstract

The application belongs to the technical field of water-reducing agents, and in particular relates to a polycarboxylic acid high-performance water-reducing agent, which comprises the following components in parts by weight: polycarboxylate water-reducing agent 8-15 %, retarder 0.5-3%, thixotropic agent 0.01-0.1%, foam stabilizer 0.01-0.05%, air-entraining agent 0.01-0.05%, water balance. The polycarboxylate high-performance water-reducing agent of the present application is compounded with polycarboxylate water-reducing agent and retarder, thixotropic agent, foam stabilizer, air-entraining agent, etc. The agent is evenly mixed, the stability is good, and the dosage range is wider, which is beneficial to the metering of the polycarboxylate superplasticizer.

Description

technical field [0001] The application belongs to the technical field of water-reducing agents, and in particular relates to a polycarboxylic acid high-performance water-reducing agent. Background technique [0002] Polycarboxylate water reducer is an adjuvant widely used in concrete for dispersing cement. Since the polycarboxylate water reducer was successfully developed in Japan in the 1980s, it has a small amount of addition, The advantages of high water reducing rate, good slump retention performance, low concrete shrinkage rate, adjustable molecular structure and no use of formaldehyde in the production process have gradually replaced some traditional water reducing agents. [0003] Chinese patent document CN 105504175 A discloses a polycarboxylic acid-based water-reducing agent with polyacrylic acid as a side chain. By introducing polyacrylic acid on the side face of the comb-shaped structure, the affinity of the water-reducing agent molecules to cement particles is in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/38C04B24/26C08F283/06C04B103/30
CPCC08F283/065C04B40/0039C04B2103/302C08F220/06C08F218/12C04B24/165C04B24/026C04B22/16C04B24/06C04B22/08C04B22/06C04B24/38C04B24/2623C04B24/2652C04B24/20C04B24/16C04B22/002
Inventor 叶茂海刘振清叶茂烺方林锦
Owner 福州创先工程材料有限公司