Semi-flexible pavement material and pavement construction method thereof

A technology of semi-flexible pavement and construction method, which is applied to the coagulation pavement, roads, roads and other directions paved on site. In order to improve the overall strength and deformation ability, prevent the delamination of sand and mortar, and prolong the service life

Active Publication Date: 2018-04-17
苏州三创路面工程有限公司
View PDF5 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, asphalt mortar is lipophilic, and the formed asphalt interface has a repelling effect on cement mortar, which is not conducive to pouring cement mortar into the asphalt mixture.
T...

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
  • Semi-flexible pavement material and pavement construction method thereof
  • Semi-flexible pavement material and pavement construction method thereof
  • Semi-flexible pavement material and pavement construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of asphalt mixture: First, mix SBS modified asphalt, coarse aggregate, fine aggregate, water, limestone powder, and lithium salt composite early strength agent according to the ratio of 1:4.5:0.55:0.22:0.42:0.001 , and then stir well. Then pave the mixed asphalt mixture on the road surface, the paving thickness is 7cm, the paving speed is 1m / min, and the porosity of the asphalt mixture is about 25%. Then cure for 2 hours.

[0047] Preparation of cement mortar: add 1 part of 425 grade aluminate cement, 0.05 part of fly ash, and 0.2 part of ultra-fine sand into the cement mortar mixer in sequence, mix for 2 minutes until uniform, then add 0.4 part of water, UEA to expand Add 0.05 parts of water reducing agent, 0.4 parts of naphthalene-based superplasticizer, 0.01 parts of polyvinyl alcohol, and 0 parts of BD emulsion into the cement mortar mixer and stir for 4 minutes.

[0048] Preparation of semi-flexible pavement: Spread the well-mixed cement mortar repeat...

Embodiment 2

[0050] Preparation of asphalt mixture: First, mix SBS modified asphalt, coarse aggregate, fine aggregate, water, limestone powder, and lithium salt composite early strength agent according to the ratio of 1:4.7:0.6:0.25:0.43:0 , and then stir well. Then spread the mixed asphalt mixture on the road surface, the paving thickness is 5cm, the paving speed is 1.5m / min, and the porosity of the asphalt mixture is about 29%. Then cure for 3 hours.

[0051] Preparation of cement mortar: Then add 1 part of 425 grade aluminate cement, 0.1 part of fly ash, and 0.2 part of ultra-fine sand into the cement mortar mixer and mix them for 2 minutes until uniform, then add 0.45 parts of water, UEA Add 0.05 part of expansion agent, 0.5 part of naphthalene-based water reducer, 0.02 part of polyvinyl alcohol, and 0.1 part of BD emulsion into the cement mortar mixer and stir for 4 minutes.

[0052] Preparation of semi-flexible pavement: Spread the well-mixed cement mortar repeatedly on the surface...

Embodiment 3

[0054] Preparation of asphalt mixture: First, mix SBS modified asphalt, coarse aggregate, fine aggregate, water, limestone powder, and lithium salt composite early strength agent according to the ratio of 1:4.9:0.72:0.29:0.48:0.0015 , and then stir well. Then pave the mixed asphalt mixture on the road surface, the paving thickness is 7cm, the paving speed is 2m / min, and the porosity of the asphalt mixture is about 30%. Then cure for 2 hours.

[0055] Preparation of cement mortar: First, mix naphthalene-based water reducer and methyl cellulose ether at a weight ratio of 1:0.003, and make a uniform mixture by continuous stirring for later use. Then add 1 part of 425 grade aluminate cement, 0.2 parts of fly ash, and 0.25 parts of ultra-fine sand into the cement mortar mixer and mix them for 2 minutes until uniform. Then add 0.55 parts of water, 0.08 parts of UEA expansion agent, naphthalene Add 0.6 parts of superplasticizer, 0.04 parts of polyvinyl alcohol, and 0.3 parts of BD ...

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

No PUM Login to view more

Abstract

The invention discloses a semi-flexible pavement material and a pavement construction method thereof. According to key points of the technical scheme, components of the semi-flexible pavement materialinclude an asphalt mixture serving as a large-pore matrix and cement slurry serving as a filler, wherein a weight percentage of the asphalt mixture is 70-80%; a weight percentage of the cement slurryis 20-30%; the asphalt mixture contains the following components in parts by weight: 1-2 parts of SBS modified asphalt, 4-5 parts of coarse aggregate, 0.5-0.8 part of fine aggregate, 0.2-0.3 part ofwater, 0.4-0.5 part of limestone dust and 0-0.005 part of a lithium salt composite early strength agent; the coarse aggregate is natural sand with a particle size of 13.2-16mm; the fine aggregate is natural sand with a particle size of 4.5-9mm; and the cement slurry contains the following components in parts by weight: 0.5-1.5 parts of Portland cement, 0.2-0.3 part of super-fine sand, 0.05-0.2 part of fly ash, 0.4-0.9 part of water, 0.05-0.09 part of a UEA expanding agent, 0.2-0.6 part of a water reducing agent, 0.01-0.05 part of polyvinyl alcohol and 0-0.5 part of BD emulsion. The aim of prolonging the service life of the semi-flexible pavement is achieved.

Description

technical field [0001] The invention relates to the field of road construction, more specifically, it relates to a semi-flexible pavement material and a road construction method. Background technique [0002] my country's urban road pavement is mainly divided into asphalt concrete pavement and cement concrete pavement; asphalt concrete pavement has viscoelastic-plastic properties, resulting in the strength and rheology of asphalt pavement being affected by temperature changes. The cement concrete pavement is composed of concrete slabs with a certain thickness. Due to the change of the external temperature difference, the temperature difference between the slab and the surrounding area is large; under the action of temperature stress, the cement concrete slab is prone to cracks, which leads to a decrease in its structural bearing capacity. Semi-flexible pavement has both the rigidity of cement concrete pavement and the flexibility of asphalt concrete pavement, which can prolo...

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
IPC IPC(8): C04B26/26C04B38/00C04B28/04C04B41/68E01C7/32
CPCC04B26/26C04B28/04C04B41/5079C04B41/68C04B2111/00508C04B2111/0075E01C7/32C04B14/28C04B14/14C04B2103/12C04B38/0041C04B18/08C04B14/02C04B2103/0068C04B24/2623C04B24/226C04B2103/302C04B24/383C04B41/4535
Inventor 王少寅王丽丽潘健高振华
Owner 苏州三创路面工程有限公司
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