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

Anti-skid cement mortar for tunnel pavement and preparation method thereof

A cement mortar and tunnel technology, which is applied in the field of anti-skid cement mortar for tunnel pavement and its preparation, can solve the problems of non-consideration of anti-skid performance, durability, impact resistance, poor wear resistance, insufficient toughness, etc., and achieve good durability , extended service life, high early strength effect

Active Publication Date: 2016-06-29
CHANGAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary cement mortar has high compressive strength, but has disadvantages such as high brittleness, insufficient toughness, and poor impact resistance and wear resistance.
Although polymer cement mortar has good flexural, compressive strength and bonding properties, when it is used for tunnel cement pavement maintenance and repair, the environmental factors of tunnel moisture and acid gas have no effect on its anti-skid performance and durability. influences

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
  • Anti-skid cement mortar for tunnel pavement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Pour 28.9 parts (parts by mass, the same below) of cement and 55 parts of quartz sand (fineness modulus 2.52) into a stirring tank for manual premixing; add 3 parts of water into the mixture of cement and sand and perform mechanical stirring for 60 seconds; mix 10 parts of Pour the styrene-acrylic emulsion (38% solid content) into the stirring tank, and rinse the container containing the styrene-acrylic emulsion twice with the remaining 3 parts of water, then pour it into the reaction kettle and stir for 120s; slowly add 0.05 parts respectively Naphthalene-based water reducer, 0.02 part of organosiloxane and 0.03 part of polyacrylamide are stirred evenly to obtain an anti-skid cement mortar.

[0029] According to the "Highway Engineering Cement and Cement Concrete Test Regulations" (JTGE30-2005) to test the setting time of the mortar, the initial setting time is 285min, and the final setting time is 515min. Considering the small thickness of the anti-skid layer and the ...

Embodiment 2

[0032] Pour 28 parts of cement and 54.88 parts of sand into the mixing tank for manual premixing; add 2.5 parts of water into the mixture of cement and sand for mechanical stirring for 60 seconds; pour 12 parts of polyvinyl acetate emulsion (40% solid content) into the mixing tank Reactor, and rinse the remaining 2.5 parts of water twice to the container holding the polymer, pour it into the reaction kettle and stir for 120s; slowly add 0.04 parts of polycarboxylate water reducer, 0.03 parts of organosiloxane With 0.02 part of polyvinyl alcohol and 0.03 part of polyacrylamide, stir evenly to obtain a kind of anti-skid cement mortar. Its initial setting time is 265min and final setting time is 500min; the 3d flexural strength is 4.6MPa, and the compressive strength is 27.8MPa.

Embodiment 3

[0034] Pour 28.5 parts of cement and 56.39 parts of quartz sand into the mixing tank for manual premixing; add 2 parts of water into the mixture of cement and sand and perform mechanical stirring for 90s; pour 11 parts of ethylene-vinyl acetate emulsion (solid content 40%) into the stirring tank, and rinse the remaining 2 parts of water twice to the container containing the polymer, then pour it into the reaction kettle and stir for 120s; slowly add 0.04 parts of polycarboxylate water reducer, 0.03 parts of silicon ether and 0.04 part of polyacrylamide, and stir evenly to obtain a kind of anti-skid cement mortar. Its initial setting time is 265min and final setting time is 505min; the 3d flexural strength is 4.9MPa, and the compressive strength is 28.8MPa.

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
flexural strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses anti-skid cement mortar for a tunnel pavement and a preparation method thereof. The anti-skid cement mortar is prepared from the following components in percentage by weight: 26-36 parts of cement, 48-58 parts of sands, 8-18 parts of polymers, 3-10 parts of water, 0.03-0.07 part of a water reducer, 0.01-0.04 part of a defoamer and 0.01-0.06 part of a stabilizer. The preparation method comprises the following steps: weighing the following raw materials in the anti-skid cement mortar in percentage by weight: cement, sand, polymers, water, a water reducer, a defoamer and a stabilizer for later use; pouring cement and sand into a stirring kettle, pre-mixing, and piling up; adding water into a cement-sand mixture pit, stirring, and then pilling the mixture up again; adding a polymer emulsion into the mixture pit, mechanically stirring and piling the mixture up; and slowly adding the water reducer, the defoamer and the stabilizer, respectively, and uniformly stirring to prepare the anti-skid cement mortar. The anti-skid cement mortar disclosed by the invention is good in peaceability and high in early strength and can be used for effectively improving the anti-skid performance of the pavement.

Description

technical field [0001] The invention relates to the technical field of road materials, in particular to an anti-skid cement mortar for tunnel pavement and a preparation method thereof. Background technique [0002] With the rapid development of the national economy and the rapid increase of comprehensive national strength, the construction of highway tunnels in my country has developed rapidly. However, under the action of driving load, the tunnel concrete pavement is easy to be polished and smoothed, and gradually loses its original anti-skid performance, resulting in a sharp decrease in the friction coefficient between the pavement and car tires. More serious traffic accidents such as sideslip or even collision occur. It not only causes huge losses to people's life and property safety, but also causes huge damage to vehicles and traffic facilities, reduces road transportation efficiency, and causes great inconvenience to passenger and cargo transportation. [0003] As th...

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 Patents(China)
IPC IPC(8): C04B28/04C04B14/06
Inventor 陈华鑫尹艳平况栋梁宋莉芳高盼张敏李廷
Owner CHANGAN UNIV
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