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Method for testing bonding strength of emulsified asphalt

A technology of emulsified asphalt and bond strength, which is applied in the field of bond strength test of emulsified asphalt, can solve problems such as low efficiency, long test piece production cycle, road surface damage, etc., and achieve the effect of improving construction efficiency and construction effect

Pending Publication Date: 2022-05-10
西安华泽道路材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the bonding effect between emulsified asphalt layers is mostly used to test the pulling and shearing effects between the small Marshall specimens, or to drill core samples on the road surface. The production cycle of the specimens is long, the test error is large, and the efficiency is low. certain damage
And when determining the spraying amount of the sticky layer material, the test data is not much different, and the difference is not obvious, so it cannot be used as the basis for the initial judgment in the room

Method used

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  • Method for testing bonding strength of emulsified asphalt
  • Method for testing bonding strength of emulsified asphalt
  • Method for testing bonding strength of emulsified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prefabricate 30cm×30cm×5cm AC-10 asphalt mixture rutting slabs to prepare SBR modified emulsified asphalt with an asphalt content of 50%; apply 72g of SBR modified emulsified asphalt evenly on the asphalt mixture rutting slabs, and let it stand for 24 hours ; Use AB glue to stick six 20mm spindles on the surface of the smeared adhesive layer material, and test it after placing it at room temperature for 24 hours. After setting the relevant parameters of the instrument, use the pulling device to pull out, the measuring range is 0.7-20MPa, read the test value, and observe the asphalt adhesion fracture interface. Test results, as shown in Table 1:

[0039] Table 1

[0040]

example 2

[0042] Prefabricated 30cm×30cm×5cm AC-20 asphalt mixture rutting slabs to prepare emulsified asphalt with 50% asphalt content, SBR modified emulsified asphalt and water-based epoxy modified emulsified asphalt. Apply 72g of these three materials evenly on the asphalt rut slab, and let it stand for 24 hours. Use AB glue to stick three groups of 18 20mm spindles on the surface of the smeared adhesive layer material, and place it at room temperature for 24 hours before conducting the test. After setting the relevant parameters of the instrument, use the pulling device to pull out, the measuring range is 0.7-20MPa, read the test value, and observe the asphalt adhesion fracture interface. Test result, as shown in table 2:

[0043] Table 2

[0044]

[0045] From the above test results, it can be concluded that among the three materials, the bond strength of water-based epoxy emulsified asphalt is the largest.

[0046] The advantages of the present invention are:

[0047] 1. Co...

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Abstract

The invention discloses a method for testing the bonding strength of emulsified asphalt. The method comprises the following steps: prefabricating an asphalt mixture rut plate; uniformly brushing the adhesive layer material on the asphalt mixture track plate; wherein the bonding layer material comprises but is not limited to spraying type emulsified asphalt or modified emulsified asphalt; adhering one or more spindles matched with a drawing instrument to the surface of the brushed adhesive layer material; vertically drawing the spindle by adopting an adhesive force drawing instrument, and reading a test value; and taking the average value of one group of test values or a plurality of groups of test values as the bonding strength of the bonding layer material. According to the invention, the effect of the adhesive layer emulsified asphalt after spraying can be effectively simulated, and the bonding effect of the spraying type emulsified asphalt can be preliminarily judged; the construction quality can be effectively detected, the usage amount of the spraying type emulsified asphalt is controlled, and technical guidance is provided for specific construction materials and construction processes.

Description

technical field [0001] The invention belongs to the technical field of asphalt testing, and relates to a method for testing the cohesive strength of emulsified asphalt, in particular to a method for testing the cohesive strength of sprayed emulsified asphalt or modified emulsified asphalt used in petrochemical and road asphalt pavement adhesive layers. To measure the bonding effect of emulsified asphalt indoors, for the quality inspection and control of viscous layer oil. Background technique [0002] With the continuous development of the national economy, in the new construction and maintenance projects of high-grade highways in my country, the role and quality of the adhesive layer materials cannot be ignored, and higher requirements are put forward for the bonding effect between the structural layers. The quality of interlayer bonding is one of the important factors affecting the service life of the pavement. If the interlayer bonding is not good, it will affect the inte...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 弓锐韩浩强马文斌郭彦强向豪徐鹏
Owner 西安华泽道路材料有限公司
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