Efficient polycarboxylic acid water reducing agent with additional modified celluloses

A high-efficiency polycarboxylic acid and cellulose technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as affecting the use of superplasticizers, prone to bleeding, and prone to cracks. The effect of improving the fluidity of the slurry, reducing the bleeding, and reducing the amount of cement

Inactive Publication Date: 2016-10-05
ANHUI XINRUN NEW MATERIALS
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  • Abstract
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  • Claims
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Problems solved by technology

However, problems such as bleeding, segregation, low strength, and cracks are prone to occur during the production of concrete, which affects the use of water reducing agents. These shortcomings are not explained in the article, and further modification is required.

Method used

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Embodiment Construction

[0014] A high-efficiency polycarboxylate superplasticizer added with modified cellulose, prepared from the following raw materials in parts by weight (kg): 240 isopentenol polyoxyethylene ether, 25.2 acrylic acid, 1.6 ammonium persulfate, 0.53 thioglycolic acid, Lignin 13, a concentration of 10wt% sodium hydroxide solution in an appropriate amount, deionized water in an appropriate amount, graphene oxide 26, sugar factory waste liquid 5, hydroxypropyl methylcellulose 7, polyacrylamide 2, calcium chloride 3, three Ethanolamine 2, carbon black 5, building brick slag 19, silane coupling agent kh5501.

[0015] The high-efficiency polycarboxylate water reducer with modified cellulose is made by the following specific steps:

[0016] (1) Add 4 times the amount of deionized water to the graphene oxide, put it into an ultrasonic oscillator for 30 minutes until the dispersion is uniform, then heat the graphene oxide dispersion in a water bath at 60°C, and slowly add lignin , stir and ...

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Abstract

The invention discloses an efficient polycarboxylic acid water reducing agent with modified celluloses. The efficient polycarboxylic acid water reducing agent comprises, by weight, 240-250 parts of methyl-2-buten polyoxyethylene ether, 25.2-26.0 parts of acrylic acid, 1.6-1.65 parts of ammonium persulfate, 0.53-0.55 part of thioglycolic acid, 13-14 parts of lignin, an appropriate quantity of sodium hydroxide solution with the concentration of 10 wt%, an appropriate quantity of deionized water, 26-28 parts of graphene oxide, 5-7 parts of waste liquid from sugar factories, 7-8 parts of hydroxypropyl methyl celluloses, 2-3 parts of polyacrylamide, 3-4 parts of calcium chloride, 2-3 parts of triethanolamine, 5-6 parts of carbon black, 19-22 parts of building brick residues and 1-1.2 parts of silane coupling agents kh550. The efficient polycarboxylic acid water reducing agent has the advantages that components such as the hydroxypropyl methyl celluloses, the polyacrylamide and the carbon black are added into the efficient polycarboxylic acid water reducing agent in preparation procedures by the aid of a series of treatment processes, accordingly, the flowability and the frost resistance of concrete can be improved, and the dispersion resistance of products in water further can be improved.

Description

technical field [0001] The invention relates to the technical field of concrete admixtures, in particular to a high-efficiency polycarboxylate water reducer added with modified cellulose. Background technique [0002] Polycarboxylate high-performance water-reducing agent is an important component material for preparing high-performance concrete. It is widely used in high-speed railways, bridges, Nuclear power, hydropower and other key projects. However, the performance of the mother liquor of polycarboxylate high-performance water reducer is relatively single, which cannot meet the needs of concrete in different engineering fields and different performance requirements, which greatly restricts the wide application and development of polycarboxylate high-performance water reducer. Experts and scholars at home and abroad have conducted systematic research on polycarboxylic acid-based high-performance water reducers through chemical and physical modification methods, and have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B18/16C04B22/02C04B22/12C04B24/12C04B24/16C04B24/26
CPCC04B40/0039C04B2103/302C04B24/16C04B24/38C04B22/02C04B24/383C04B24/2652C04B24/122C04B22/124C04B18/16Y02W30/91
Inventor 朱安会马洪章
Owner ANHUI XINRUN NEW MATERIALS
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