Unlock instant, AI-driven research and patent intelligence for your innovation.

Cement-based waterproof material based on capillary crystallization principle

A waterproof material, osmotic crystallization technology, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of limited anti-carbonation effect and anti-corrosion effect of concrete buildings, and improve volume stability. and crack resistance, improve compressive strength, overcome the effect of large shrinkage

Active Publication Date: 2021-09-24
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned waterproof coatings have limited anti-carbonation effects and anti-corrosion effects on concrete buildings.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cement-based waterproof material based on capillary crystallization principle
  • Cement-based waterproof material based on capillary crystallization principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The cement-based waterproof material based on the principle of osmotic crystallization provided in this example, its raw materials include 60 parts by weight of Portland cement, 20 parts of quartz sand, 60 parts of filler, 6 parts of polymer water-absorbing resin, and 5 parts of potassium aluminum sulfate , 6 parts of hydroxypropyl methylcellulose, 70 parts of water. That is, the weight ratio of filler and polymer water-absorbing resin is 10:1; among the fillers, the weight ratio of fly ash, fluorogypsum, and light-burned magnesia is 1:1.5:3.5.

[0020] The preparation method of the cement-based waterproof material of this embodiment is: pour the polymer water-absorbing resin into water to make it fully absorb water for 30 minutes, then add Portland cement, quartz sand, filler, aluminum potassium sulfate, hydroxypropyl methylcellulose , stir evenly.

Embodiment 2

[0022] The cement-based waterproof material based on the principle of osmotic crystallization provided in this example, its raw materials include 70 parts by weight of Portland cement, 18 parts of quartz sand, 65 parts of filler, 4 parts of polymer water-absorbing resin, and 8 parts of potassium aluminum sulfate , 4 parts of hydroxypropyl methylcellulose, 60 parts of water. That is, the weight ratio of the filler to the polymer water-absorbing resin is 16.25:1; in the filler, the weight ratio of fly ash, fluorogypsum, and light-burned magnesium oxide is the same as that in Example 1. The preparation method of the cement-based waterproof material is the same as in Example 1.

Embodiment 3

[0024] The cement-based waterproof material based on the principle of osmotic crystallization provided in this example, its raw materials include 40 parts by weight of Portland cement, 27 parts of quartz sand, 43 parts of filler, 10 parts of polymer water-absorbing resin, and 4 parts of potassium aluminum sulfate. , 8 parts of hydroxypropyl methylcellulose, and 80 parts of water. That is, the weight ratio of filler to polymer water-absorbing resin is 4.3:1; in the filler, the weight ratio of fly ash, fluorogypsum, and light-burned magnesia is the same as in Example 1. The preparation method of the cement-based waterproof material is the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a cement-based waterproof material based on a capillary crystallization principle, and belongs to the technical field of cement-based waterproof materials. The building material comprises the following raw materials in parts by weight: 40-70 parts of Portland cement, 18-27 parts of quartz sand, 43-65 parts of filler, 4-10 parts of high-molecular water-absorbent resin, 4-8 parts of aluminum potassium sulfate, 4-8 parts of hydroxypropyl methyl cellulose and 60-80 parts of water. The filler is composed of fly ash, fluorgypsum and light calcined magnesia according to a weight ratio of 1:(1.5-2):(3-4). According to the cement-based waterproof material, the fly ash-fluorgypsum-low-burning magnesium oxide and the high-molecular water-absorbent resin are introduced, the synergistic effect of the filler and the high-molecular water-absorbent resin is utilized, a multi-expansion-source slow release technology is formed, the micro-expansion effect is achieved, and the volume stability and crack resistance of the cement-based capillary crystalline waterproof material are greatly improved. The defects that a traditional cement-based permeable crystallization type waterproof material is large in shrinkage, prone to cracking, poor in durability and the like are overcome, and meanwhile the compressive strength, the wet base surface bonding strength, the anti-seepage performance and the like of the waterproof material are remarkably improved.

Description

technical field [0001] The invention belongs to the field of cement-based waterproof materials, in particular to cement-based waterproof materials based on the principle of osmotic crystallization. Background technique [0002] Cement-based permeable crystalline waterproof material is a rigid waterproof material with self-healing effect on concrete cracks. It is generally composed of Portland cement and fine quartz sand as the main base material, and then added special active chemical substances and other admixtures. After reacting with water, the active chemical substances contained in the waterproof material penetrate into the interior of the concrete through the carrier, forming water-insoluble crystals in the concrete, filling the capillary channels, so as to make the concrete dense and waterproof. [0003] At present, traditional cement-based permeable crystalline waterproof materials are widely used in various projects, but there are still disadvantages such as large s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/08C04B14/30C04B18/04C04B24/00C04B111/27C04B111/34
CPCC04B28/04C04B40/0039C04B18/08C04B14/304C04B18/0445C04B24/00C04B2111/27C04B2111/343C04B2103/0051C04B14/06C04B22/148C04B24/383Y02W30/91
Inventor 李家正林育强李明霞李文伟李杨陆超陈群山张亮
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION