Micro-modeling material for fair-faced concrete

A technology of fair-faced concrete and modeling materials, applied in the field of building materials, which can solve the problems of expensive imported materials, reflective appearance, obvious repair marks, and cure the symptoms, not the root cause, etc., and achieve the effects of good adhesion interface, restoration of smoothness, and convenient use

Inactive Publication Date: 2018-07-06
中铁西南科学研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Domestic professional fair-faced concrete repair materials are lacking, and the imported materials are expensive; the use of organic paint pastes, the initial effect is acceptable, after a short period of service (about 1 year), fading, yellowing and insufficient adhesion are obviously exposed Weaknesses, unable to meet the appearance requirements of fair-faced concrete; using polymer black and white cement color paste, the appearance is reflective and the repair marks are obvious; in addition, many organizations come from the decoration industry, and have insufficient understanding of the deterioration mechanism and restoration goals of fair-faced concrete. , the repair of fair-faced concrete can only stop at the appearance color, and it is often helpless to the durability problems caused by appearance defects
[0005] The existing repair method is to use cement paste to repair the defective parts, which is easy to cause surface color difference, which cannot meet the appearance requirements of fair-faced concrete; the existence of color difference affects the appearance of concrete, which cannot meet the appearance requirements of fair-faced concrete. Decorative treatment adds another cost

Method used

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  • Micro-modeling material for fair-faced concrete
  • Micro-modeling material for fair-faced concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A clear-faced concrete microscopic modeling material, including powder and liquid, wherein the liquid accounts for 10% of the weight of the powder; the powder is composed of the following components by mass: 320 kg of ordinary Portland cement with a strength grade of P O42.5R , 20 kg of 42.5-grade fast-hardening sulfoaluminate cement, 20 kg of superfine silica fume of 500 mesh, 30 kg of talcum powder of 325 mesh, 75 kg of quartz machine-made sand of 40-80 mesh, 495 kg of river sand with a fineness of 1.8mm, poly 2.1 kg of carboxylic acid powder water reducer, 0.2 kg of plastic calcium sulfoaluminate expansion agent, 0.3 kg of organosilicon defoamer, 0.2 kg of hydroxypropyl methylcellulose thixotropic agent; the liquid is composed of the following components by weight Sub-components: modified carboxylated styrene-butadiene latex 10 kg, water 90 kg.

[0033] When in use, the above-mentioned raw materials are stirred and mixed evenly to repair the appearance defects (pimpl...

Embodiment 2

[0040] A kind of clear-water concrete microscopic molding material, including powder and liquid, wherein the liquid accounts for 7% of the weight of the powder; the powder is composed of the following components by mass: 320 kg of ordinary Portland cement with a strength grade of P O42.5R , 30 kg of 42.5-grade fast-hardening sulfoaluminate cement, 20 kg of superfine silica fume of 500 mesh, 30 kg of talcum powder of 325 mesh, 55 kg of quartz machine-made sand of 40-80 mesh, 495 kg of river sand with a fineness of 1.8mm, poly 2.1 kg of carboxylic acid powder water reducer, 0.2 kg of plastic calcium sulfoaluminate expansion agent, 0.3 kg of silicone defoamer, 0.25 kg of hydroxypropyl methylcellulose thixotropic agent; the liquid preparation consists of the following components by weight Sub-components: modified carboxylated styrene-butadiene latex 12 kg, water 88 kg.

[0041] When in use, the above-mentioned raw materials are stirred and mixed evenly to repair the appearance def...

Embodiment 3

[0044] A kind of clear-water concrete microscopic molding material, including powder and liquid, wherein the liquid accounts for 8% of the weight of the powder; the powder is composed of the following components by mass: 320 kg of ordinary Portland cement with a strength grade of P O42.5R , 15 kg of 42.5-grade fast-hardening sulfoaluminate cement, 20 kg of superfine silica fume of 500 mesh, 30 kg of talcum powder of 325 mesh, 55 kg of quartz machine-made sand of 40-80 mesh, 465 kg of river sand with a fineness of 1.8mm, poly 2.1 kg of carboxylic acid powder water reducer, 0.2 kg of plastic calcium sulfoaluminate expansion agent, 0.3 kg of silicone defoamer, 0.25 kg of hydroxypropyl methylcellulose thixotropic agent; the liquid preparation consists of the following components by weight Sub-components: modified carboxylated styrene-butadiene latex 10 kg, water 90 kg.

[0045] When in use, the above-mentioned raw materials are stirred and mixed evenly to repair the appearance def...

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Abstract

The invention discloses a micro-modeling material for fair-faced concrete. The micro-modeling material comprises powder and a liquid, wherein the liquid is 7%-10% of the weight of the powder; the powder is composed of the following components in parts by weight: 100 parts of cement, 58-62 parts of ultrafine silicon powder, 70-80 parts of talcum powder, 140-160 parts of fine aggregate, 0.6-0.7 partof a water reducing agent, 0.05-0.06 part of an expanding agent, 0.07-0.08 part of a defoaming agent, 0.05-0.06 part of a thixotropic agent, and 0.12-0.14 part of fibers; and the liquid is composed of the following components in parts by weight: 1 part of a polymer emulsion and 9 parts of water. The micro-modeling material provided by the invention has good workability, adhesive adhesion, gloss and durability, and can achieve same quality and color as those of a base material.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a microscopic molding material for fair-faced concrete. Background technique [0002] With the acceleration of the pace of urbanization, the beautification of city appearance and city appearance has been paid more and more attention by the society and the government; glass curtain wall, fair-faced concrete and exterior wall coating are the main beautification means of modern cities; compared with glass curtain wall and exterior wall coating Compared with fair-faced concrete, which is economical and environmentally friendly, it will become the mainstream of construction in the field of urban facilities such as urban overpasses, expressways, high-speed rail stations, and airports in the future; due to deviations in concrete mixing, construction, and maintenance, the fair-faced concrete will appear color difference and anti-alkali , dark spots, uneven surface, staggered j...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/72
CPCC04B28/065C04B2111/72C04B7/02C04B18/146C04B14/042C04B14/06C04B14/068C04B2103/302C04B22/142C04B24/42C04B24/383C04B24/2676
Inventor 陈曦孙坤赵峰杨龙强温晓凯刘毅杨昱衡杨前李亮周斌闵宾李元青沈传贺郑甜
Owner 中铁西南科学研究院有限公司
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