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Protecting mortar of express highway roadbed surface hard-face terrace

A technology for roadbed surface and expressway, applied in the field of hard floor protection mortar, to achieve the effects of improving wear resistance and shrinkage resistance, improving water repellency, and stabilizing strength

Active Publication Date: 2010-02-17
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hard surface floor has not really solved the cracking problem of the roadbed surface so far, especially the matching problem with the main concrete of the roadbed and the overall deformation resistance

Method used

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  • Protecting mortar of express highway roadbed surface hard-face terrace
  • Protecting mortar of express highway roadbed surface hard-face terrace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of zeolite-grafted redispersible latex powder:

[0048] a) Calculate by weight, add 5 parts of zeolite powder (particle size is 0.5um) into 40 parts of water, add acetic acid aqueous solution (the same below) with a concentration of 10% by weight to adjust the pH to 4, be warming up to 50 ° C, then add 1 part of hydroxyethyl ethyl cellulose, 0.5 part of polyvinylpyrrolidone with a weight-average molecular weight of 3000, and 2 parts of methacryloxypropyltriethoxysilane are made into the bottom liquid;

[0049] b) Mix 10 parts of methyl methacrylate, 20 parts of (methyl) styrene, 20 parts of tertiary ethylene carbonate and 1 part of butyl thioglycolate to form a mixed monomer, and then add 0.2 parts of allyl polyoxyethylene Ammonium vinyl ether sulfate, 0.2 parts of potassium persulfate and 10 parts of water, to prepare a mixed solution;

[0050] c) get 5 parts of mixed solution, 0.1 part of allyl polyoxyethylene ether ammonium sulfate, 0.1 part of potassium...

Embodiment 2

[0054] Preparation of zeolite-grafted redispersible latex powder:

[0055]a) Calculate by weight, add 10 parts of zeolite powder (particle size is 1um) into 40 parts of water, add acetic acid aqueous solution with a weight concentration of 10% to adjust pH to 5, be warming up to 50 ° C, then add 1 part of hydroxyethyl Ethyl cellulose and 0.5 parts of polyvinylpyrrolidone with a weight average molecular weight of 5000, and 2 parts of methacryloyloxypropyltriethoxysilane;

[0056] b) Mix 10 parts of ethyl methacrylate, 20 parts of methyl styrene, 20 parts of ethylene tertiary carbonate and 1 part of molecular weight regulator mercaptoethanol to prepare a mixed monomer, take 50 parts of the mixed monomer and add 0.2 part of Allyl polyoxyethylene ether, 0.2 parts of sodium persulfate and 10 parts of water are made into a mixed solution;

[0057] c) Take 5 parts of mixed solution, 0.1 part of allyl polyoxyethylene ether and 0.1 part of sodium persulfate, add them to the bottom liq...

Embodiment 3

[0063] Graft 40 parts of ordinary Portland cement (Shanghai Xiang brand (42.5)), 20 parts of quartz sand (40-140 mesh), 20 parts of emery (10-60 mesh), 5 parts of anhydrite, and the zeolite of Example 1 2 parts of redispersible latex powder, 0.1 part of xanthan gum (Zibo Hailan Chemical), 1 part of calcium stearate powder (400 mesh) (Liyang Chemical), 5 parts of zeolite powder, black iron powder (particle size 0.4mm) 1 part and 0.5 part of aluminum powder (particle size 0.3mm) are stirred and mixed to obtain the product.

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Abstract

The invention provides a protecting mortar of the express highway roadbed surface hard-face terrace. The protecting mortar comprises the following components in parts by weight: 40-50 parts of ordinary silicate cement, 20-30 parts of quartz sand, 30-50 parts of carborundum, 2-4 parts of zeolite graft re-dispersible emulsion powder and 0.3-1 part of xanthan gum. The invention adopts zeolite graft re-dispersible emulsion powder; in the hydration process of silicate cement, the dense doping between anhydrite and crosslinked zeolite changes the lattice of cement so as to increase the wearability and antishrinking property of the express highway roadbed surface; the zeolite graft re-dispersible emulsion powder is crosslinked with xanthan gum to form composite polymer and the flexibility is increased to improve the anti-deforming force of the roadbed surface. The combined use of mortar and cement can increase the hardness, wear resistance, antishrinking property and anti-deforming force of the roadbed surface and prolong the service life of the highway.

Description

technical field [0001] The invention relates to a hard-surface floor protection mortar. Background technique [0002] With the rapid development of the national economy, the construction of expressways and tunnels in my country, especially the expressway and subway projects in big cities, is also booming, and it is now in the forefront of the world. In the great development of highways and tunnels, there are also some technical problems to be solved, such as the cracking problem of the roadbed surface, the deformation resistance of the roadbed, the wear resistance of the road surface, and the freeze-thaw problem in severe cold areas. [0003] In recent years, hard-surface flooring has been paid more and more attention in China and has been widely used in highway and tunnel construction. It has a very good prospect as a new material. However, so far, the hard surface floor has not really solved the cracking problem of the subgrade surface, especially the matching problem wit...

Claims

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Application Information

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IPC IPC(8): C04B28/04C08L51/10C08L29/04C08K9/04C04B14/06C04B24/26
CPCC04B2111/0075C04B2111/2038C04B28/04
Inventor 施晓旦郭和森王养臣
Owner HUAWEI TEHCHNOLOGIES CO LTD
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