Surface dense enhancement concrete heat preservation and moisturizing composite curing method

A technology of concrete and concrete surfaces, applied in the processing of building materials, construction, building construction, etc.

Active Publication Date: 2019-08-27
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the currently disclosed concrete curing film products and technologies focus on the improvement of the early strength of concrete and the suppression of cracks by curing film curing, and lack of attention to the important durability impact index of concrete surface density, which is related to The early curing effect of concrete is closely related to

Method used

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  • Surface dense enhancement concrete heat preservation and moisturizing composite curing method

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Effect test

Embodiment 1

[0020] The concrete thermal insulation and moisturizing maintenance method capable of surface compaction and enhancement combines nano-silica sol with thermal insulation and moisture-retention curing film for concrete maintenance. In the composite maintenance method, the particle size range, spraying amount and spraying timing of nano-silica sol are limited. , the heat preservation and moisturizing maintenance film has specific structural characteristics of water storage and release. The particle size of the nano-silica sol particles is 20 nm, and the spraying amount is 10 g / m 2 , Spray within 30 minutes after the cast-in-place concrete forming surface is plastered. The water storage layer of the thermal insulation and moisturizing maintenance film is composited by water-absorbing fiber with a saturated water absorption rate of 20 times and a modified resin with a saturated water absorption rate of 100 times.

Embodiment 2

[0022] The concrete thermal insulation and moisturizing maintenance method capable of surface compaction and enhancement combines nano-silica sol with thermal insulation and moisture-retention curing film for concrete maintenance. In the composite maintenance method, the particle size range, spraying amount and spraying timing of nano-silica sol are limited. , the heat preservation and moisturizing maintenance film has specific structural characteristics of water storage and release. The particle size of the nano-silica sol particles is 8 nm, and the spraying amount is 4 g / m 2 , Spray within 30 minutes after the cast-in-place concrete non-forming surface is demolished. The water storage layer of the thermal insulation and moisturizing maintenance film is composited by water-absorbing fibers with a saturated water absorption rate of 30 times and a modified resin with a saturated water absorption rate of 50 times.

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Abstract

The invention relates to a surface dense enhancement concrete heat preservation and moisturizing composite curing method. Nanometer silicon sol and a heat preservation and moisturizing curing film arecombined for concrete curing; in the composite curing method, the particle size range, the spraying using amount and the spraying opportunity of the nanometer silicon sol are defined, and the heat preservation and moisturizing curing film has the specific water storage and release structure characteristics. The surface dense enhancement effect of the nanometer silicon sol and the heat preservation and moisturizing effect of the curing film are combined, the early stage self hydration and heat release characteristics of the cast-in-place concrete structure are fully utilized, concrete surfacedense enhancement is achieved, and the durability of the structure is improved.

Description

technical field [0001] The invention belongs to the technical field of concrete maintenance, and in particular relates to a concrete heat preservation and moisturizing maintenance method capable of surface compaction enhancement. Background technique [0002] Since the advent of Portland cement in 1842, cement concrete has become one of the most important building materials in the field of civil engineering because of its advantages such as easy availability of raw materials, simple process, and excellent mechanical properties. Unfortunately, after nearly 200 years of development, the preparation technology and service conditions of concrete are not optimistic, and premature deterioration of structures is not uncommon. Reasonable concrete maintenance is an important link to ensure the quality of the project, especially in the early stage when the concrete is prone to water loss and cracking, which has an important impact on the subsequent structural performance development a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/24
CPCE04G21/246
Inventor 蒋睿程冠之谢永江董全霄郑新国曾志李享涛刘子科李世达谢清清
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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