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Composite slurry capable of being applied to rapid snow melting and deicing of asphalt concrete under microwave heating and application method

A technology of asphalt concrete and composite slurry, which is applied to cohesive pavement paved on site, roads, and pavement details. Satisfied structural depth, reduced rutting, and excellent durability

Active Publication Date: 2021-09-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the current domestic sand-mist sealant technologies, due to the insufficient bonding strength of the cement, are prone to wear and peeling when applied in southern regions with a lot of rain, and the durability is not enough

Method used

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  • Composite slurry capable of being applied to rapid snow melting and deicing of asphalt concrete under microwave heating and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A composite slurry of the present invention that can be applied to rapidly melting snow and ice under asphalt concrete microwave heating, the composite slurry includes components in the following mass ratio: microwave enhanced absorption material: SBS modified emulsified asphalt: epoxy resin = 3 : 1:1, wherein the microwave-enhanced absorption material is corundum and microwave absorber with a mass ratio of 1:1, and the microwave absorber is Si with a particle size of less than 7 μm and a mass ratio of 1:1 3 N 4 / Fe and titanium dioxide.

[0040] The application method of the composite slurry in the present embodiment in asphalt concrete is as follows:

[0041] (1) According to the SBS modified emulsified asphalt: mineral powder: aggregate weight ratio of 5:4.8:90.2, weigh the components to prepare asphalt concrete;

[0042] (2) Take by weighing 90g microwave absorber (45g Si 3 N 4 / Fe and 45g titanium dioxide) and 45g water-based self-emulsifying epoxy resin (E-215...

Embodiment 2

[0059] A composite slurry that can be used to quickly melt snow and ice under microwave heating of asphalt concrete, the composite slurry includes components in the following mass ratio: microwave enhanced absorption material: SBS modified emulsified asphalt: epoxy resin = 2:1: 1. Among them, the microwave-enhanced absorption material is corundum and microwave absorber with a mass ratio of 1:1, and the microwave absorber is Si with a mass ratio of 1:1 3 N 4 / Fe and titanium dioxide.

[0060] The application method of the composite slurry in the present embodiment in asphalt concrete is as follows:

[0061] (1) According to the SBS modified emulsified asphalt: mineral powder: aggregate weight ratio of 5:4.8:90.2, weigh the components to prepare asphalt concrete;

[0062] (2) Weigh 60g of microwave absorber and 60g of water-based epoxy resin according to the weight ratio of microwave absorber: water-based self-emulsifying epoxy resin: water-based epoxy resin curing agent. The...

Embodiment 3

[0070] The difference between this embodiment and Embodiment 1 is that the microwave absorber in the microwave enhanced absorption material is only titanium dioxide. At room temperature, put the asphalt concrete coated with a microwave-enhanced functional layer and the ordinary asphalt concrete covered with a 3cm thick ice layer prepared in this comparative example with an ice layer with a thickness of 3 cm into a 2.45 GHz microwave oven with an output power of 900 W and a frequency of 2.45 GHz. Heating in a microwave oven, the test results prove that the ice-melting time of the asphalt concrete coated with the microwave-enhanced functional layer prepared in this comparative example is 1.57 times higher than that of ordinary asphalt concrete.

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Abstract

The invention discloses composite slurry capable of being applied to rapid snow melting and deicing of asphalt concrete under microwave heating. The composite slurry comprises a microwave enhanced absorbing material, modified emulsified asphalt and epoxy resin in a mass ratio of (1-4): (1-3): (1-2). The application method of the composite slurry in asphalt concrete comprises the following steps: uniformly coating the composite slurry on the surface of a road surface, curing and curing at normal temperature, and opening traffic. The microwave enhanced absorbent is prepared into the composite slurry, the composite slurry is coated on the surface of the asphalt concrete to form a functional layer, and the functional layer can rapidly emit heat under the action of microwaves and transfer the heat to an ice and snow layer so that the purpose of melting and deicing the snow on the pavement is achieved; and the functional layer does not influence the temperature change of other positions of the pavement while carrying out microwave enhancement on the pavement surface so that the normal use of the pavement is ensured, and the defects of uneven microwave heating, damage to the asphalt concrete and the like which are easily caused when a microwave absorbent is directly doped into the asphalt concrete are overcome.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a composite slurry and an application method applicable to rapidly melting snow and deicing asphalt concrete under microwave heating. Background technique [0002] With the in-depth development of industrialization, the problem of environmental pollution has become more and more prominent. At the same time, as the world has entered the era of rapid development of intelligence, the demand for smart pavement is becoming more and more urgent. It is imperative to develop green, intelligent and environmentally friendly microwave heating asphalt pavement. . The current road operation and maintenance process (such as road deicing, etc.) consumes a lot of energy and may cause great pollution. The traditional manual deicing method has low deicing efficiency, high cost of manpower and material resources, and potential safety hazards; the chemical deicing method has th...

Claims

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Application Information

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IPC IPC(8): E01C7/35E01C11/24
CPCE01C7/358E01C11/245Y02A30/30
Inventor 刘小明赵昱颜大雄
Owner CENT SOUTH UNIV