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

SMA mixture, and preparation method and application thereof

A mixture and aggregate technology, which is applied in climate change adaptation, roads, construction, etc., can solve the problems of less repair cost and full utilization of resources, unsatisfactory research, lower temperature control during mixing, etc., to ensure skeleton performance, Effect of reducing dosage and improving adhesion

Active Publication Date: 2014-08-27
GUANGSHA CONSTR GROUP
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For this reason, the research on SMA mixtures began to appear frequently. For example, "Steel Slag Horseshoe Grease Gravel Asphalt Concrete and Its Preparation Method" with patent number 03128388.8 discloses a replacement method for the lack of skeleton material hardness materials, and the patent number is 201110135665. X's "A Warm Mix SMA Asphalt Mixture and Its Preparation Method" discloses a kind of SMA material composition and reduces the temperature control requirements during mixing. The method of recycling raw materials, regenerating asphalt, and reducing the cost of pavement repair, the patent number is 200510018289.0 discloses the paving method of asphalt and the requirements of various numerical ranges in asphalt gradation; in addition, there are a large number of journals Papers and other non-patent technical literature have carried out research and exploration on SMA pavement materials, including SMA mixture composition and skeleton material standards and gradation value range requirements, SMA mixture preparation methods, SMA mixture regeneration, SMA processing The technical requirements of road paving, etc., among which the most reflected is how to reduce the internal toxins of SMA and the requirements of raw material composition and content. There are many studies, and they are relatively perfect. After the preparation, there are relatively few studies on how to operate in the construction process to meet the material requirements, reduce the cost of asphalt road repair and fully utilize resources, and it is not ideal

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
  • SMA mixture, and preparation method and application thereof
  • SMA mixture, and preparation method and application thereof
  • SMA mixture, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of SMA mixture, the formula is 7kg of aggregate, 2kg of mineral powder, 0.35kg of fiber, 2kg of additives composed of resin, modified asphalt, heavy traffic asphalt, asphalt rejuvenator, milling material, and modified asphalt, heavy traffic The weight percentage of asphalt produced by asphalt and asphalt regenerant is 0.64kg of the total weight of all raw materials combined; wherein the aggregate is divided into coarse aggregate and fine aggregate, and the coarse aggregate is 3mm diabase, and the maximum particle size is 8mm, The soil content is less than 0.5%, the polishing value is greater than 42, and the needle flake content is less than 10%. The fine aggregate is fine sand rolled from 3mm limestone; the mineral powder is ground from 0-8mm limestone. The apparent relative density is 2.720; the fibers are wood fibers and are loose flocculent fibers with a water content of ≤1%; the weight ratio of milling material and resin in the additive is 1:3.

[0038] Its ...

Embodiment 2

[0044] A kind of SMA mixture, its formula is aggregate 8kg, mineral powder 4kg, fiber 0.45kg, is made up of additive 3kg by resin, modified asphalt, heavy traffic asphalt, asphalt regeneration agent, milling material, inorganic aluminosilicate, wherein Aggregate is divided into coarse aggregate and fine aggregate. The coarse aggregate adopts 10mm steel slag, and the maximum particle size is 10mm, the soil content is less than 0.5%, the polishing value is greater than 42, and the needle flake content is less than 10%. Fine sand rolled from 1mm limestone; the mineral powder is ground from 1mm limestone, and its apparent relative density is 2.720; the fiber is chemical fiber, and it is loose flocculent fiber, with a water content ≤ 1%; additives The weight ratio of the milling material to the resin is 1:3; the weight of the inorganic aluminosilicate is 300g.

[0045] Its preparation method comprises the following steps:

[0046] (1) Preparation of additives: According to the tec...

Embodiment 3

[0051] A kind of SMA mixture, its formula is 7.5kg of aggregate, 3kg of mineral powder, 0.4kg of fiber, made of resin, modified asphalt, heavy traffic asphalt, asphalt regenerant, milling material, inorganic aluminosilicate, fly ash The composition of additives is 2.5kg, and the aggregate is divided into coarse aggregate and fine aggregate. The coarse aggregate is a mixture of 6mm diabase and steel slag, and the maximum particle size is 9mm, the soil content is less than 0.5%, and the polishing value is greater than 42. Needle flake content is less than 10%; fine aggregate is fine sand rolled from 2mm limestone; mineral powder is ground from 7mm limestone, and its apparent relative density is 2.720; the fiber is mineral fiber and is loose Flock fiber, water content ≤ 1%; the weight ratio of milling material and resin in the additive is 1:3, and the weight of inorganic aluminosilicate and fly ash accounts for 250g of the additive, of which fly ash and inorganic silicon aluminum ...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of rapid restoration materials for disease asphalt pavements and application of the rapid restoration materials, and especially relates to an SMA mixture, and a preparation method and application thereof. The SMA mixture is composed of, in parts by weight, 7-8 parts of aggregate, 2-4 parts of mineral powder, 0.35-0.45 part of fiber and 2-3 parts of additives. The additives comprise resin, modified asphalt, heavy traffic paving asphalt, an asphalt regenerant and a milling material. The preparation method of the SMA mixture comprises: preparing a primary finished product of the additive, preparing a semi-finished product of the additive, adding mineral powder, adding other raw materials and stirring and performing detection, so as to obtain the SMA mixture. By combining a construction method for the asphalt disease pavement and accurately controlling the technological parameters of steps, rapid appropriate fusion among joints can be realized, the step of adding modified asphalt for filling joints in the conventional technology is avoided, the cost is reduced and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of rapid repair materials for diseased asphalt pavement and its application, in particular to an SMA mixture and its preparation method and application. Background technique [0002] SMA mixture refers to the mixture composed of asphalt horseshoe grease filled gravel skeleton. It is a discontinuously graded mixture. It is suitable for asphalt with a large amount of asphalt, high adhesion requirements, high softening point and good temperature stability. The material has small voids, high water resistance, aging resistance and durability; SMA pavement originated in Germany in the 1960s, and was later introduced and adopted by European countries, and formulated specifications in line with local national conditions. In the 1990s, it was adopted by the United States. At the same time, the SMA pavement technology was improved to make it more in line with the needs of local climate conditions; China first adopted ...

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): C04B26/26E01C23/06
CPCY02A30/30
Inventor 吴其民尹友成李智慧张剑锋陈辉李臣蔡纯阳
Owner GUANGSHA CONSTR GROUP
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