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Hardening agent and preparation method thereof

A hardening agent and additive technology, applied in the field of hardening agent and its preparation, can solve the problems of unsatisfactory strength performance of ground hardening agent, insufficient bonding force of wear-resistant aggregate and cement, etc., and achieve good wear resistance , high flexural strength and high compressive strength

Active Publication Date: 2013-05-15
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the strength performance of the ground hardener is not fully satisfactory due to the insufficient bonding force between the wear-resistant aggregate and the cement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] At the same time, the present invention also discloses the preparation method of the above-mentioned hardening agent, including: 1) Aggregate surface modification treatment: adding toluene as a dispersion medium in the reaction device, adding aggregate and corresponding proportion of silane coupling agent, and venting nitrogen , Under nitrogen flow, the temperature is raised to 80-90℃ and the reaction is stirred for 4-6 hours. After hot vacuum filtration, the initial product is washed with water, and then the initial product is dried in an oven at 100±5℃ to obtain wear-resistant bone 2) Preparation of hardener: Mix the wear-resistant aggregate, cement and additives obtained in step 1). The above-mentioned mixing method is well-known in the art. For example, the mixing method is: in a mixer, at a speed of 3-10rad / s, first mix the aggregate and cement for 10-30min, and then add additives to continue mixing for 30-60min . The above-mentioned mixer can be a double-screw con...

Embodiment 1

[0029] This embodiment is used to illustrate the hardener and its preparation method disclosed in the present invention.

[0030] 1) Add 400 parts by weight of toluene into the reaction device, put in 62 parts by weight of selenium-iron alloy (with a particle size of 3.0mm) and 1.3 parts by weight of silane coupling agent, pass in nitrogen, and heat up to 75°C under a nitrogen stream and stir for 6.5 hours. After hot vacuum filtration, the initial product is washed with water, and then the initial product is dried in an oven at 110°C to obtain wear-resistant aggregate, which is sieved loosely for use;

[0031] 2) First, add the wear-resistant aggregate obtained in step 1) and 23 parts by weight of Portland cement to the double spiral cone mixer, mix at a speed of 4 rad / s for 32 minutes, and then add 0.7 parts by weight of polycarboxylic acid water reducing agent, 8 parts by weight of fly ash and 5 parts by weight of latex powder were continuously mixed for 62 minutes, weighed and p...

Embodiment 2

[0033] This embodiment is used to illustrate the hardener and its preparation method disclosed in the present invention.

[0034] 1) Add 400 parts by weight of toluene to the reaction device, put in 60 parts by weight of quartz sand (with a particle size of 2.5mm) and 0.3 parts by weight of silane coupling agent, and then pass nitrogen into it. The temperature is raised to 90°C under a nitrogen flow and stirred for 4 hours. After hot vacuum filtration, the initial product was washed with water, and then the initial product was dried in an oven at 100°C to obtain wear-resistant aggregate, which was sieved loosely for use;

[0035] 2) First, add the wear-resistant aggregate obtained in step 1) and 27 parts by weight of Portland cement to the double spiral cone mixer, mix for 30 minutes at a speed of 3 rad / s, and then add 0.5 parts by weight of naphthalene-based water reducing agent, 4 Parts by weight of silicon micropowder and 3 parts by weight of sodium fluorosilicate are continuous...

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Abstract

The invention provides a hardening agent. The hardening agent comprises an aggregate, cement and an additive, and the aggregate surface is coated with a silane coupling agent. The invention also provides a preparation method of the hardening agent. The method comprises steps of mixing the aggregate and the cement; and mixing the mixture with the additive. The hardening agent provided by the invention has good wear resistance, and high flexural strength and compressive strength.

Description

Technical field [0001] The invention relates to a hardener and a preparation method thereof, in particular to a concrete floor hardener and a preparation method thereof. Background technique [0002] At present, ordinary cement concrete is generally used directly on the ground of various buildings. Its disadvantages are low abrasion resistance, easy dusting, low strength, and permeability resistance lower than that of cleaning. In order to overcome these shortcomings, the usual solution is to lay tiles on the floor surface or apply organic floor coatings such as epoxy floor. However, based on floor strength and cost considerations, wear-resistant floor hardeners have great advantages over the above two solutions. Its hardness and wear resistance are much higher than epoxy floor paint and floor tiles, and its cost is higher. The first two are cheaper. Therefore, in parking lots, workshops, warehouses and other places that require high ground abrasion resistance and impact resist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B14/06C04B14/02
Inventor 陈帆王忠利王小彬
Owner HUAWEI TEHCHNOLOGIES CO LTD
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