Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wear-resistant and crack-resistant cement mortar and preparation method thereof

A cement mortar and cement technology, applied in the field of cement mortar, can solve the problems affecting the fiber-matrix interface stress transfer, uneven dispersion of steel fibers, poor adhesion performance, etc., and achieve high cohesion, good durability, and production costs. low effect

Pending Publication Date: 2022-01-14
深圳市纳路特建材科技有限公司
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 28-day compressive strength of the high-strength mortar prepared in this application is ≥150MPa, the flexural strength is ≥20MPa, and its performance is relatively poor, which may be due to the uneven dispersion of steel fibers in the matrix and poor adhesion to the matrix. Directly affects the stress transfer at the fiber-matrix interface

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A wear resistant cracked cement mortar consisting of 257 parts by weight of cement, 28 parts by weight of fly ash, 143 parts by weight of river sand, 75 parts by weight of gravel, 2 parts by weight of polycarboxylate water water water 10 parts by weight of steel fibers, 85 parts by weight of water.

[0048] The preparation method of the wear resistant cracked cement mortar includes the following steps:

[0049] According to the weight of the cement, fly ash, river sand, gravel, steel fiber is placed in a mortar stirring pan, mixed with a cement mortar mixer for 10 min, then adding a polycarboxylate water-watering agent and water. 20 min was mixed with a speed of 45 rpm to obtain a wear-resistant cracked cement mortar.

Embodiment 2

[0051] A wear resistant cracked cement mortar consisting of 257 parts by weight of cement, 28 parts by weight of fly ash, 143 parts by weight of river sand, 75 parts by weight of gravel, 2 parts by weight of polycarboxylate water water water 10 parts by weight of the steel fiber, 85 parts by weight of water.

[0052] The preparation method of the functionalized steel fiber includes the following steps:

[0053] S1, first placed the steel fibers in acetone for 24 h, remove the drying and placed in a cold plasma modification apparatus, and then passed into the mixed gas of oxygen and argon, wherein the volume ratio of oxygen and argon is 2: 8. The mixed gas is treated at a vacuum 40Pa, and the output power is 200W for 20 min to obtain a pretreatment steel fiber;

[0054] S2, 8 parts by weight of n-silicate and 10 parts by weight of hexamethyltrimethylammonium bromide are added to 100 parts by weight of anhydrous ethanol to obtain a solution B; 8 parts by weight of the pretreatment s...

Embodiment 3

[0058] A wear resistant cracked cement mortar consisting of 257 parts by weight of cement, 28 parts by weight of fly ash, 143 parts by weight of river sand, 75 parts by weight of gravel, 2 parts by weight of polycarboxylate water water water 10 parts by weight of the steel fiber, 85 parts by weight of water.

[0059] The preparation method of the functionalized steel fiber includes the following steps:

[0060] S1, first placed the steel fibers in acetone for 24 h, remove the drying and placed in a cold plasma modification apparatus, and then passed into the mixed gas of oxygen and argon, wherein the volume ratio of oxygen and argon is 2: 8. The mixed gas is treated at a vacuum 40Pa, and the output power is 200W for 20 min to obtain a pretreatment steel fiber;

[0061] S2, 10 parts by weight of pretreatment steel fibers were placed in 50 parts by weight of 0.05 mol / L of the calcium chloride solution, soaked for 12 h, then 50 parts by weight of 0.05 mol / L aqueous sodium carbona...

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
compressive strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses wear-resistant and crack-resistant cement mortar and a preparation method thereof, and belongs to the technical field of cement mortar. The wear-resistant and crack-resistant cement mortar is prepared from the following raw materials in parts by weight: 240-270 parts of cement, 20-35 parts of fly ash, 130-150 parts of river sand, 65-85 parts of gravel, 1-4 parts of polycarboxylate water reducing agent, 8-15 parts of steel fibers or functionalized steel fibers and 80-100 parts of water. The functional steel fibers are adopted in the cement mortar, so that the problem of poor dispersity of steel fibers in cement mortar can be effectively improved, the bonding stress between the steel fibers and the cement mortar can be improved, and the wear resistance and crack resistance of the cement mortar are further improved. The wear-resistant and crack-resistant cement mortar disclosed by the invention is simple in preparation method and low in production cost, has the characteristics of high cohesiveness, good wear resistance, excellent crack resistance, good durability and the like, can be applied to building surfaces such as grounds, pavements or bridge decks which need to touch external objects such as automobiles, and can prolong the service life and reduce the maintenance cost.

Description

Technical field [0001] The present invention relates to the field of cement mortar, and more particularly to a wear-resistant anti-crack cement mortar and a preparation method thereof. Background technique [0002] Cement and cement-based materials have become one of the construction materials widely used in today's construction projects due to their preparation of raw materials, high intensity, high intensity and easy formation, etc. Among them, the cement mortar is often used as the bonding and repair materials of cement concrete structures due to low cost, durability, and stable properties. It is often used in construction, road, bridge and other aspects. However, there are many inherent defects in the ordinary cement mortar, such as large brittleness, poor toughness, poor wear resistance, and cracks from shrinkage. As the scope of engineering construction and the continuous expansion of the scale, the environment and stress conditions in cement mortar structures are more dema...

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): C04B28/04C04B20/12C04B111/20C04B111/34
CPCC04B28/04C04B20/12C04B2111/20C04B2111/343C04B18/08C04B14/068C04B18/12C04B2103/302C04B14/48C04B20/023C04B20/107C04B20/1066
Inventor 杜宥谕杜勋虎
Owner 深圳市纳路特建材科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com