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Concrete hardener and preparation method thereof

A hardening agent and concrete technology, applied in the field of building materials, can solve the problems of no obvious improvement in performance, affect the floor effect, poor durability, etc., and achieve the effect of good surface gloss, improved surface self-cleaning ability, and uniform color

Inactive Publication Date: 2017-11-10
SHOUGANG SHUICHENG IRON & STEEL GRP SAIDE CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are mainly three types of inorganic concrete floor hardeners on the domestic and foreign markets: the first type is a sodium-based salt product mainly composed of sodium silicate, which can give priority to improving the strength and wear resistance of concrete, but has poor durability. It is easy to be affected by pan-alkaline in the later stage; the second type is potassium-based salt products with potassium silicate as the main component, and its performance is not significantly improved compared with sodium-based salt; the third type is based on lithium silicate. Lithium-based salt products, most of which are imported from abroad, have a remarkable sealing and hardening effect and are relatively expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A concrete hardener, comprising the following raw materials in weight proportions, lithium silicate 18kg, sodium polyacrylate 3kg, sodium lignosulfonate 3kg, nano silicon dioxide 4kg, sodium fluorosilicate 6kg, magnesium chloride 10kg, nano titanium dioxide 4.5 kg, sodium metaaluminate 7kg, limestone 10kg and water 25kg.

[0014] The preparation method of the concrete hardener: Weigh water and place it in a reactor, slowly add lithium silicate, sodium polyacrylate, sodium lignosulfonate, nano-silica, sodium fluorosilicate in sequence under a medium-speed stirring environment , magnesium chloride, nano-titanium dioxide, sodium metaaluminate and limestone, then stir at a low speed and cool to room temperature naturally; the medium speed stirring is a mechanical stirring with a speed control of 150rpm; the low speed stirring is a speed control with a speed of 50rpm Mechanical stirring.

[0015] Lithium silicate is preferred to use high-activity lithium silicate for concre...

Embodiment 2

[0017] A concrete hardener, comprising the following raw materials in weight ratio: lithium silicate 15kg, sodium polyacrylate 2kg, sodium lignosulfonate 1kg, nano silicon dioxide 2kg, sodium fluorosilicate 4kg, magnesium chloride 9kg, nano titanium dioxide 4kg , sodium metaaluminate 6kg, limestone 8kg and water 12kg.

[0018] The preparation method of the concrete hardener: Weigh water and place it in a reactor, slowly add lithium silicate, sodium polyacrylate, sodium lignosulfonate, nano-silica, sodium fluorosilicate in sequence under a medium-speed stirring environment , magnesium chloride, nano-titanium dioxide, sodium metaaluminate and limestone, then stir at a low speed and naturally cool to room temperature; the medium-speed stirring is a mechanical stirring with a speed control of 200rpm; the low-speed stirring is a speed control with a speed of 60rpm Mechanical stirring.

[0019] Lithium silicate is preferred to use high-activity lithium silicate for concrete, and it...

Embodiment 3

[0021] A concrete hardener, comprising the following raw materials in weight ratio, lithium silicate 20kg, sodium polyacrylate 4kg, sodium lignosulfonate 4kg, nano silicon dioxide 6kg, sodium fluorosilicate 8kg, magnesium chloride 11kg, nano titanium dioxide 5kg , sodium metaaluminate 8kg, limestone 12kg and water 30kg.

[0022] The preparation method of the concrete hardener: Weigh water and place it in a reactor, slowly add lithium silicate, sodium polyacrylate, sodium lignosulfonate, nano-silica, sodium fluorosilicate in sequence under a medium-speed stirring environment , magnesium chloride, nano-titanium dioxide, sodium metaaluminate and limestone, and then stir at a low speed and naturally cool to room temperature; the medium-speed stirring is a mechanical stirring with a speed control of 180rpm; the low-speed stirring is a speed control with a speed of 55rpm Mechanical stirring. Lithium silicate is preferred to use high-activity lithium silicate for concrete, and its s...

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Abstract

The invention provides a concrete hardener. The concrete hardener comprises the following raw materials by weight: 15-20 parts of lithium silicate, 2-4 parts of sodium polyacrylate, 1-4 parts of sodium lignosulfonate, 2-6 parts of nanometer silica, 4-8 parts of sodium fluorosilicate, 9-11 parts of magnesium chloride, 4-5 parts of nanometer titanium dioxide, 6-8 parts of sodium metaaluminate, 8-12 parts of limestone and 20-30 parts of water. The hardener provided by the invention is sprayed onto the surface of a concrete structure to enhance the strength and durability of concrete, and is not prone to fading and low in cost. The concrete hardener is applicable to the technical field of building materials.

Description

technical field [0001] The invention relates to building material technology, in particular to a concrete hardener and a preparation method thereof. Background technique [0002] As a widely used building material, concrete plays a huge role in modern construction projects. Alkali-aggregate reaction (AAR for short) refers to the reaction between cement, admixture and alkali in water and the active components in the aggregate. After the concrete is poured, it gradually reacts. Concrete expands and cracks, losing design performance. The adverse reaction of AAR is currently recognized as the "fatal injury of concrete structure cancer" in the world. In addition, concrete is usually prone to ash, poor wear resistance, and easy to oil due to its inherent defects and deficiencies during use as a floor and pavement material. In order to avoid these phenomena, people do not directly use ordinary concrete as a floor material, or pour a layer of epoxy resin on the concrete surface a...

Claims

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Application Information

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IPC IPC(8): C04B24/26
CPCC04B40/0039C04B12/04C04B24/26C04B24/18C04B14/06C04B22/126C04B22/12C04B14/305C04B22/08C04B14/28C04B20/008
Inventor 蔡菲齐晶吴崇双田江海钟承刚石磊
Owner SHOUGANG SHUICHENG IRON & STEEL GRP SAIDE CONSTR CO LTD
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