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

Concrete for low-grade highway and preparation thereof

A concrete and low-grade technology, applied in the field of construction materials, can solve the problems of low concrete strength, achieve the effects of saving land resources, good long-term performance, and good resistance to sulfate erosion

Inactive Publication Date: 2008-12-24
CHONGQING UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disadvantages of low strength, the concrete prepared from industrial solid waste in the prior art cannot meet the requirements as a pavement surface material, and it is difficult to apply it as a main pavement material

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

[0029] The low-grade road concrete of the present embodiment is made of following raw materials:

[0030] 500kg of cementitious materials, including 175kg of 42.5 cement, and the rest are carbide slag and Class III fly ash, and the mass ratio of carbide slag to fly ash is 1:3;

[0031] Sand and gravel material 1750kg, of which the mass percentage of sand is 25%, and the rest is stone;

[0032] 200kg of water;

[0033] The sum of calcium carbide slag and fly ash mass is 3.25% sodium sulfate.

[0034] The method adopted in this embodiment is as follows:

[0035] 1) Weigh the raw materials according to the above ratio.

[0036] 2) Stir the calcium carbide slag and stones for 0.5 minutes;

[0037] 3) Add sand to the mixture obtained in step 2), and stir for 1 minute;

[0038] 4) Add cement, fly ash and sodium sulfate to the mixture obtained in step 3), and stir for 1.5 minutes;

[0039] 5) Add water to the mixture obtained in step 4), and stir for 4 minutes to obtain a concr...

Embodiment 2

[0043] The low-grade road concrete of the present embodiment is made of following raw materials:

[0044] 450kg of cementitious materials, including 42.5kg of cement and 157.5kg, the rest are carbide slag and Class III fly ash, the mass ratio of carbide slag to fly ash is 1:2.7;

[0045] Sand and gravel material 1850kg, of which the mass percentage of sand is 45%, and the rest is stone;

[0046] 160kg of water;

[0047]The sum of calcium carbide slag and fly ash mass is 3.55% sodium sulfate.

[0048] The method adopted in this embodiment is as follows:

[0049] 1) Weigh the raw materials according to the above ratio.

[0050] 2) Stir the calcium carbide slag and stones for 1 minute;

[0051] 3) Add sand to the mixture obtained in step 2), and stir for 0.5 minutes;

[0052] 4) Add cement, fly ash and sodium sulfate to the mixture obtained in step 3), and stir for 1 minute;

[0053] 5) Add water to the mixture obtained in step 4), and stir for 2 minutes to obtain a concret...

Embodiment 3

[0057] The low-grade road concrete of the present embodiment is made of following raw materials:

[0058] 480kg of cementitious materials, including 168kg of 32.5 cement, and the rest are carbide slag and Class III fly ash, the mass ratio of carbide slag to fly ash is 1:3.3;

[0059] Sand and gravel material 1800kg, of which the mass percentage of sand is 35%, and the rest is stone;

[0060] 180kg of water;

[0061] The sum of calcium carbide slag and fly ash mass is 3.75% sodium sulfate.

[0062] The method adopted in this embodiment is as follows:

[0063] 1) Weigh the raw materials according to the above ratio.

[0064] 2) Stir the calcium carbide slag and stones for 0.8 minutes;

[0065] 3) Add sand to the mixture obtained in step 2), and stir for 0.8 minutes;

[0066] 4) Add cement, fly ash and sodium sulfate to the mixture obtained in step 3), and stir for 1.2 minutes;

[0067] 5) Add water to the mixture obtained in step 4), and stir for 3 minutes to obtain a conc...

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
compressive strengthaaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a concrete for low-grade highway prepared by cementing materials, sandstone materials, water and sodium sulphate, wherein the cementing materials are formed by cement, carbide slag and fly ash, the weight percentage of the cement accounts for 35-45% of the cementing materials, the balance is carbide slag and fly ash with the weight ratio of 1: 2.7-3.3; the weight ratio of each component is as follows: cementing materials 9-10 weight parts, sandstone materials 35-37 weight parts, water 3.2-4 weight parts, the dosage of the sodium sulphate accounting for 3.25-3.75% of the weight total of the carbide slag and fly ash. The invention also discloses a method for preparing the concrete comprising steps of preparation of concrete mixture, construction by compaction technology and maintenance.

Description

technical field [0001] The invention relates to the technical field of construction materials, in particular to a concrete material and a preparation method thereof, and is especially suitable for pavement surface layers of low-grade highways. Background technique [0002] Low-grade roads (roads below the second grade) are an important part of national roads, with a large number and wide distribution, accounting for most of the regional road network mileage. The pavement structure types are mainly semi-rigid base asphalt pavement such as asphalt surface treatment, penetration, asphalt concrete, and a small amount of flexible base asphalt pavement and cement concrete pavement. Cement concrete pavement structure is used for low-grade roads. Traditional cement concrete pavement uses cement as the binder, and the cost is relatively high. Therefore, reducing project cost and saving investment has become a common problem in the construction of low-grade highways. Making full use...

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): C04B28/00C04B7/26C04B22/14
CPCC04B28/02C04B2111/0075C04B2111/26Y02W30/91C04B14/02C04B14/06C04B14/322C04B18/08C04B22/147
Inventor 黄煜镔党玉栋王庆珍乔墩王智钱觉时
Owner CHONGQING 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