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Fine iron tailing CA mortar used for rapidly repairing pavement at room temperature and preparation method thereof

A technology of fine iron and tailings, applied in the field of surface repair materials, to promote the sustainable development of resources, reduce environmental pollution and ecological damage, and alleviate the effect of large-scale stacking

Inactive Publication Date: 2017-12-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems in the above-mentioned prior art, and then provide a kind of fine iron tailings CA mortar and its preparation method for rapid repair of road surface at normal temperature, so as to alleviate the problems of large-scale stacking and low utilization of iron tailings, At the same time, it can realize rapid repair of asphalt pavement and cement concrete pavement defects at room temperature, and improve road driving safety and comfort

Method used

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  • Fine iron tailing CA mortar used for rapidly repairing pavement at room temperature and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a method for preparing fine iron tailings CA mortar used for rapid repair of road surface at normal temperature, comprising the following steps:

[0041] According to the actual mixing amount, prepare each raw material according to the weight ratio;

[0042] Preparation of dry material: Dry mix cement, fine iron tailings, fine sand, early strength agent and fiber in a mixer for 30s to 60s according to the above ratio, and the stirring speed is 60rpm to 100rpm to obtain a uniformly mixed dry material;

[0043] Preparation of CA mortar: Mix the emulsified asphalt, water and water reducer in the mixer for 60s~90s according to the proportions, and the stirring speed is 80rpm~120rpm; after stirring evenly, add the dry powder prepared in step 1 and continue stirring for 60s~90s, and then stir The speed is 100rpm~140rpm;

[0044] Reduce the stirring speed to 30rpm-50rpm, and then stir for 60s to obtain the target CA mortar;

[0045] The to...

Embodiment 1

[0048] A kind of fine iron tailings CA mortar used for fast repairing of asphalt pavement at room temperature and its preparation method, according to the actual mixing amount, firstly weigh 30 parts of cement, 160 parts of fine iron tailings, 130 parts of fine sand, inorganic matter 0.8 parts of strong agent calcium chloride and 0.2 parts of lignin fiber were stirred in a mixer at a speed of 60rpm for 60s to obtain a dry powder; then 100 parts of emulsified asphalt, 0.15 parts of polycarboxylate superplasticizer and 6 parts of water were mixed in a mixer at a speed of 100rpm Stir at the speed of 90s; after stirring evenly, put the dry powder into it and continue stirring at the speed of 120rpm for 60s, and finally reduce the stirring speed to 30rpm and stir for 60s to obtain the target CA mortar.

Embodiment 2

[0050] A kind of fine iron tailings CA mortar and its preparation method for normal temperature rapid repair of asphalt pavement, according to the actual mixing amount, first weigh 40 parts of cement, 180 parts of fine iron tailings, 120 parts of fine sand and lignin fiber 0.3 parts were stirred in a mixer at a speed of 80rpm for 40s to obtain dry powder; then 80 parts of emulsified asphalt, 1.0 parts of organic early strength agent triethanolamine, 0.2 parts of polycarboxylate superplasticizer and 5 parts of water were mixed in a mixer at a speed of 90rpm Stir for 80s; after stirring evenly, put the dry powder into it and continue stirring for 90s at a speed of 100rpm, and finally reduce the stirring speed to 40rpm and stir for 60s to obtain the target CA mortar.

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Abstract

The invention discloses fine iron tailing CA mortar used for rapidly repairing pavement at room temperature and a preparation method thereof, mainly solving the current situation that pitch and concrete pavement diseases occur frequently, a large amount of iron tailing resources are stacked and the utilization rate is low. The fine iron tailing CA mortar used for rapidly repairing pavement at room temperature is prepared from concrete, emulsified asphalt, fine iron tailings, fine sand, a water reducing agent, an early strength agent, fibers and water. Specific to different pavement types, different raw material proportions are provided; the invention also discloses a preparation method of the fine iron tailing CA mortar used for rapidly repairing pavement at room temperature. The preparation method is simple and clear and is easy to promote and apply.

Description

technical field [0001] The invention relates to a surface repair material, in particular to a fine iron tailings CA mortar used for quick repair of road surfaces at normal temperature and a preparation method thereof. Background technique [0002] With the development of my country's modern city construction and highway transportation, highway infrastructure has developed rapidly. By the end of 2016, the total mileage of my country's highways had reached 4.6963 million kilometers, and the density of highways was 48.92 kilometers per hundred square kilometers. The mileage has exceeded 130,000 kilometers, and the national expressway network has been basically completed. [0003] However, with the rapid development of highway construction, road maintenance work cannot be ignored. Generally, the design service life of asphalt pavement is 10-15 years, and the design service life of cement concrete pavement is 20-30 years. Ribbon structures under nature are subjected to complex cl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/72
CPCC04B28/06C04B2111/00017C04B2111/0075C04B2111/72C04B7/02C04B24/36C04B18/12C04B14/06C04B16/0633C04B16/06C04B2103/12C04B2103/302
Inventor 董泽蛟杨晨李新凯郗凤明
Owner HARBIN INST OF TECH
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