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A high-strength wear-resistant mortar

A wear-resistant sand, high-strength technology, applied in the field of high-strength wear-resistant mortar, can solve the problems affecting the function and safety of engineering use, and achieve the effects of crack resistance and cavitation resistance, excellent adhesion and good adaptability

Active Publication Date: 2018-08-17
辽宁省水利水电科学研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Concrete abrasion damage seriously affects the function and safety of the project

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, the cement and 70% fine aggregate (fine sand) which account for 13.75% of the total mass of the mortar are taken into the drying room through the conveyor belt for rapid drying and standby; the dried cement and fine aggregate are transported to the conical disperser Disperse and pre-mix for 20 minutes; then add 0.16% admixture, 2.7% polymer rubber powder, 5.0% silicon powder of ultrafine wear-resistant composite micropowder, 2.5% expansion agent and 2.5% vitrified micropowder in sequence. The beads are dispersed for the second time; at the same time, slowly add steel-plastic fibers accounting for 0.10% of the total mass of the mortar at the first inlet on the top. After adding the steel-plastic fibers, continue to disperse for 15 minutes. After vacuuming, seal and store. During construction, you only need to open the vacuum package, add an appropriate amount of water according to the proportion to reconcile, stir, let it stand for 15 minutes, and then stir for 2 m...

Embodiment 2

[0025] Firstly, take 13.75% cement and 74% fine aggregate (fine sand) of the total mass of the mortar and enter the drying room through the conveyor belt for rapid drying and standby; transport the dried cement and fine aggregate to the conical disperser Disperse and pre-mix for 20 minutes; then add 0.10% admixture, 1.3% polymer rubber powder, 2.5% silicon powder of ultra-fine wear-resistant composite micropowder, 1.25% expansion agent and 1.25% vitrified micropowder in sequence. The beads are dispersed for the second time; at the same time, slowly add steel-plastic fibers accounting for 0.08% of the total mass of the mortar at the first inlet on the top. After adding the steel-plastic fibers, continue to disperse for 15 minutes. After vacuuming, seal and store. During construction, you only need to open the vacuum package, add an appropriate amount of water according to the proportion to reconcile, stir, let it stand for 15 minutes, and then stir for 2 minutes before it can be...

Embodiment 3

[0027] Firstly, take 13.75% cement and 73% fine aggregate (fine sand) of the total mass of the mortar and enter the drying room through the conveyor belt for quick drying and standby; transport the dried cement and fine aggregate to the conical disperser Disperse and pre-mix for 20 minutes; then add 0.15% admixture, 2% polymer rubber powder, 3.5% silicon powder of ultrafine wear-resistant composite micropowder, 2.1% expansion agent and 2% vitrified micropowder in sequence. Secondary dispersion of the beads; at the same time, slowly add steel-plastic fibers accounting for 0.09% of the total mass of the mortar at the first inlet on the top. After adding the steel-plastic fibers, continue to disperse for 15 minutes. After vacuuming, seal and store. During construction, you only need to open the vacuum package, add an appropriate amount of water according to the proportion to reconcile, stir, let it stand for 15 minutes, and then stir for 2 minutes before it can be put into use.

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Abstract

High-strength wear-resisting mortar is characterized by being prepared from, by mass, 5.0-10.0% of superfine wear-resisting composite micro-powder (micro-sphere), 0.08-0.10% of steel-plastic fiber, 0.10-0.16% of additive, 1.3-2.7% of polymer gelatine powder, 69-74% of fine aggregate and 13.75% of cement through technological combination.The technological process mainly comprises the steps of material drying, pre-dispersion, fiber dispersion and vacuum sealed storage.The high-strength wear-resisting mortar has the excellent bonding property, cracking resistance, freezing resistance, seepage resistance, corrosion resistance, chloride penetration resistance and aging resistance of polymer cement mortar, and also has ultrahigh strength, scour-grind resistance, cracking resistance and gas etching resistance.

Description

technical field [0001] The invention relates to a high-strength wear-resistant mortar. Background technique [0002] Concrete abrasion damage is caused by the comprehensive action of high-speed water carrying sand and gravel on the surface, cutting, abrasion, and erosion. Concrete cavitation damage is mainly caused by negative pressure in the concrete depression area under the action of high-speed water flow, leading to cavitation. The steel bars of the concrete under long-term grinding are exposed, forming erosion pits. Concrete abrasion damage seriously affects the function and safety of the project. Research on high-strength and high-abrasion-resistance concrete surface protection materials is a requirement for high-speed water flow areas in hydraulic structures. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-strength wear-resistant mortar, so that the area where the high-speed water flows through h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B14/06C04B14/18C04B16/06C04B22/14C04B24/26C04B103/30C04B103/60C04B103/61
CPCC04B28/02C04B2103/302C04B2103/601C04B2103/61C04B14/06C04B24/26C04B14/18C04B16/06C04B22/147
Inventor 张永先汪魁峰宋立元夏海江胡庆华谭丽娥苏炜焕唐树新曹云龙周旭姜涛汤彦明张玉东关凯伦华玉多
Owner 辽宁省水利水电科学研究院有限责任公司
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