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Indoor gyratory compaction test method for MOH semi-flexible materials

A test method and rotary compaction technology, which is applied in the field of materials, can solve problems such as lack, and achieve the effect of high compactness, simple process steps, and small changes in compactness values

Inactive Publication Date: 2017-05-10
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant theoretical basis for the determination of the construction process and parameters of MOH semi-flexible pavement compaction. To solve this problem, it is necessary to first determine the total compaction work required for the material pavement to meet the required mechanical performance indicators through indoor compaction tests.

Method used

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  • Indoor gyratory compaction test method for MOH semi-flexible materials

Examples

Experimental program
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Effect test

Embodiment 1

[0053]Step 1. According to the mass ratio, mix the mineral material: cement: water: emulsified asphalt according to 1:0.01:0.0296:0.0804. First, mix the mineral material and cement evenly, inject water to make the surface of the mineral material wet, and then add emulsified asphalt and stir. Stir the mixture until it begins to demulsify, and make the temperature of the mixed mixture 25°C to make a MOH mixture;

[0054] Step 2: Put the lower pressure plate of the test mold into the bottom of the test mold, place a round filter paper coated with butter on the surface of the lower pressure plate, shovel the MOH mixture into the test mold with small holes, and insert it along the periphery with a slotting knife. Pounding 15 times, inserting and pounding 10 times in the middle, after inserting and pounding, level the surface of the MOH mixture into a circular arc surface, then place a circular filter paper coated with butter on the top of the mixture, and finally place the upper pla...

Embodiment 2

[0058] Step 1. According to the mass ratio, mix the mineral material: cement: water: emulsified asphalt according to 1:0.03:0.0268:0.0982. First, mix the mineral material and cement evenly, inject water to make the surface of the mineral material wet, and then add emulsified asphalt and stir. Stir the mixture until it begins to demulsify, and make the temperature of the mixed mixture 25°C to make a MOH mixture;

[0059] Step 2: Put the lower pressure plate of the test mold into the bottom of the test mold, place a round filter paper coated with butter on the surface of the lower pressure plate, shovel the MOH mixture into the test mold with small holes, and insert it along the periphery with a slotting knife. Pounding 15 times, inserting and pounding 10 times in the middle, after inserting and pounding, level the surface of the MOH mixture into a circular arc surface, then place a circular filter paper coated with butter on the top of the mixture, and finally place the upper pl...

Embodiment 3

[0063] Step 1. According to the mass ratio, mix the mineral material: cement: water: emulsified asphalt according to 1:0.02:0.0357:0.0893. First, mix the mineral material and cement evenly, inject water to make the surface of the mineral material wet, and then add the emulsified asphalt and stir. Stir the mixture until it begins to demulsify, and make the temperature of the mixed mixture 25°C to make a MOH mixture;

[0064] Step 2: Put the lower pressure plate of the test mold into the bottom of the test mold, place a round filter paper coated with butter on the surface of the lower pressure plate, shovel the MOH mixture into the test mold with small holes, and insert it along the periphery with a slotting knife. Pounding 15 times, inserting and pounding 10 times in the middle, after inserting and pounding, level the surface of the MOH mixture into a circular arc surface, then place a circular filter paper coated with butter on the top of the mixture, and finally place the uppe...

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Abstract

The invention discloses an indoor gyratory compaction test method for MOH semi-flexible materials. A mixed material comprises, by mass, 1 part of mineral aggregate, 0.01-0.03 part of cement, 0.0218-0.0396 part of water and 0.0804-0.0982 part of emulsified asphalt and is obtained by means of manual cold mixing, mixing time is controlled within 2 minutes, and a perforated test mould is filled with the mixed material for gyratory compaction. The indoor gyratory compaction test method for the MOH semi-flexible materials has the advantages that through a rubbing method, a test piece is subjected to gyratory compaction under three main technical conditions including a constant vertical pressure, a constant compaction angle and a specified compaction rotation speed, aggregate of a formed test piece can be hardly broken into pieces basically, and grading schemes are judged comprehensively through two indexes including void ratio and compressive strength.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an indoor rotary compaction test method for MOH semi-flexible materials. Background technique [0002] At present, traditional hot-mix asphalt concrete processing and pavement construction must rely on a large amount of burning energy. Under the climate conditions of alpine regions, its heat dissipation increases significantly, making construction and pavement quality control more difficult, and causing serious environmental pollution. In view of the problems existing in the application of hot-mix asphalt concrete in alpine regions, semi-flexible pavement materials have become a new direction for road construction and maintenance research in alpine regions. In order to achieve energy saving and emission reduction, we require this material to be constructed at room temperature, that is, cold mixing and cold laying. Mixed semi-flexible pavement material is a composit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/286
Inventor 曹学鹏焦生杰张翠红叶敏赵睿英徐世林
Owner CHANGAN UNIV
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