Polyether type polyurethane concrete paving material and preparation method thereof

A technology of polyether polyurethane and pavement materials, which is applied in the field of functional pavement materials, can solve the problems of complicated preparation methods and short construction retention time, so as to overcome serious diseases, avoid harmful gas emissions, and ensure comfort and safety sexual effect

Inactive Publication Date: 2020-05-12
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +7
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polymer concrete repair material prepared by the present invention has fast hardening and early strength (curing time: 10-40min; compressive strength 65-75MPa), strong bonding force with cement coagulation, and can be constructed under humid and low temperature conditions , but the preparation method of this patent is relatively complicated, and the construction tolerance time is short, and it is only suitable for quick repair and emergency maintenance of cement concrete pavement, and cannot be used as a pavement structure layer

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
  • Polyether type polyurethane concrete paving material and preparation method thereof
  • Polyether type polyurethane concrete paving material and preparation method thereof
  • Polyether type polyurethane concrete paving material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this experiment, according to the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering", the Marshall design method was used to design the mix ratio of polyether polyurethane mixtures. Polyether polyurethane concrete can adopt various gradations such as: continuous dense gradation, open gradation and so on. The present invention takes continuous compact assembly (AC) as an example. At present, there is no uniform and standardized design requirement for cold-mix materials or polyether polyurethane materials, but for hot-mix or cold-mix pavement materials, our design purpose is that its performance meets our requirements, because Referring to the Marshall design method and taking into account the durability factor, the optimal amount of adhesive is determined mainly by using the design void ratio and mineral material void ratio as reference indicators combined with gross bulk density, flow value, and Marshall stability as auxiliary indicators.

[...

Embodiment 2

[0060] A polyether type polyurethane concrete pavement material and its preparation method, its mixing ratio design method and test piece performance testing method are the same as in Example 1, the difference is that the curing time of the prepared polyether type polyurethane concrete test piece is 24 hours. After curing, the polyether polyurethane concrete specimens were tested for high temperature performance, low temperature performance, water stability performance and fatigue performance, as shown in Table 2.

[0061] Table 2 Test results

[0062]

[0063] It can be seen from the data in the table that after changing the curing time, the high temperature performance, low temperature performance, water stability performance and fatigue performance of polyether polyurethane concrete are all lower than those in Example 1.

Embodiment 3

[0065] A polyether type polyurethane concrete pavement material and its preparation method, its mixing ratio design method and test piece performance testing method are the same as in Example 1, the difference is that the curing temperature of the prepared polyether type polyurethane concrete test piece is 30°C . After curing, the polyether polyurethane concrete specimens were tested for high temperature performance, low temperature performance, water stability performance and fatigue performance, as shown in Table 3.

[0066] table 3

[0067]

[0068] It can be seen from the data in the table that after changing the curing time, the high temperature performance, low temperature performance, water stability performance and fatigue performance of polyether polyurethane concrete are all lower than those 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
compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a polyether type polyurethane concrete material and a preparation method thereof. The polyether type polyurethane concrete is combined with mineral aggregate by using a polyether type polyurethane binder instead of asphalt as a cementing material, and production and construction can be conducted at normal temperature by using common mixing equipment. The polyether polyurethane concrete adopts a cold mixing and cold paving construction mode, and has the advantages that a construction period is prolonged and harmful gas emission in the mixing process is avoided. The polyether type polyurethane concrete material disclosed by the invention has excellent pavement performance and ageing resistance. According to the polyether type polyurethane concrete material and the preparation method thereof, the use quality and the service life of a pavement structure are improved, and the driving comfort and safety of a driver are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of functional pavement materials, and relates to a polyether type polyurethane concrete pavement material and a preparation method thereof. Background technique [0002] Due to the hot summer and severe cold winter in our country, the vehicles are seriously overloaded, and the pavement layer with asphalt-based materials as the binder has technical defects such as strong temperature sensitivity, weak adhesion, low heavy load resistance, and poor anti-aging ability. The service life is no more than ten years, and the short is several years or even a few days. This means that the pavement will be milled and repaired more than ten times or even dozens of times during the service life, which will not negligible the damage to the road structure itself, the disturbance of traffic and the resulting economic loss. [0003] With the development of the polymer industry, more and more people are focusing on the applica...

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): C04B26/16
CPCC04B26/16C04B2111/0075C04B2201/50C04B14/02C04B18/141C04B2103/0068
Inventor 徐世法梁峰铭戚佳飞高登峰冉晓勇刘东晓张硕周程兴仓苏毅杰李竹静蔡硕果彭庚谢永清杨兴旺姜帅王晓晓孟令闻冯卡唐明英
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap