Reinforced emulsified asphalt concrete for roads and preparation method of concrete

A technology for emulsified asphalt and concrete, applied in the field of road engineering, can solve problems such as the need for organic solvents, complex preparation process, easy cracking, etc., and achieve the effects of avoiding high temperature sensitivity, reducing environmental pollution, and prolonging service life.

Active Publication Date: 2014-07-30
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been relevant researches in China. For example, the Chinese patent No. 200610036564.6 discloses a method for preparing emulsified asphalt modified by water-based epoxy resin. The curing agent used contains modified aromatic amine, and the cured product contains a large amount of Rigid benzene ring group, hard and brittle, low flexibility, prone to cracking in practical application
The Chinese patent application number 201110188772.9 discloses a method for preparing water-based polyurethane epoxy resin modified emulsified asphalt. The reaction time required

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) Preparation of water-based epoxy resin emulsion

[0052] Prepare materials according to the following weight ratio:

[0053] Water-based epoxy resin 43.69g Water-based epoxy curing agent 65.5g

[0054] water 120g

[0055] Mix the water-based epoxy resin with the water-based epoxy curing agent, and use a low-speed stirrer to fully stir for 8 minutes to obtain a white and uniform mixture;

[0056] Add water to the mixture, stir well, that is.

[0057] Wherein, the water-based epoxy curing agent selects diethylenetriamine, and its solid content is 30%.

[0058] 2) Preparation of water-based epoxy resin emulsified asphalt concrete

[0059] Mix 364g of anionic emulsified asphalt with the water-based epoxy resin emulsion prepared in step 1), and stir evenly to obtain water-based epoxy resin-modified emulsified asphalt;

[0060] Put the water-based epoxy resin modified emulsified asphalt in a mixing pot, add 5000g of aggregates, stir at room temperature for 130s, and cur...

Embodiment 2

[0063] 1) Preparation of water-based epoxy resin emulsion

[0064] Prepare materials according to the following weight ratio:

[0065] Water-based epoxy resin 42.2g Water-based epoxy curing agent 42.2g

[0066] water 135g

[0067] Mix the water-based epoxy resin with the water-based epoxy curing agent, and use a low-speed mixer to stir for 5 minutes to obtain a white and uniform mixture;

[0068] Add water to the mixture, stir well, that is.

[0069] Wherein, the water-based epoxy curing agent selects triethylenetetramine, and its solid content is 70%.

[0070] 2) Preparation of water-based epoxy resin emulsified asphalt concrete

[0071] Mix 483g of anionic emulsified asphalt with the water-based epoxy resin emulsion prepared in step 1), and stir evenly to obtain water-based epoxy resin-modified emulsified asphalt;

[0072] Put the water-based epoxy resin modified emulsified asphalt in a mixing pot, add 5000g of aggregates, stir at room temperature for 140s, and cure.

...

Embodiment 3

[0075] 1) Preparation of water-based epoxy resin emulsion

[0076] Prepare materials according to the following weight ratio:

[0077] Water-based epoxy resin 59.14g Water-based epoxy curing agent 88.71g

[0078] water 150g

[0079] Mix the water-based epoxy resin with the water-based epoxy curing agent, and use a low-speed stirrer to fully stir for 10 minutes to obtain a white and uniform mixture;

[0080] Add water to the mixture, stir well, that is.

[0081] Wherein, the water-based epoxy curing agent selects tetraethylenepentamine, and its solid content is 30%.

[0082] 2) Preparation of water-based epoxy resin emulsified asphalt concrete

[0083] Mix 483g of emulsified asphalt with the water-based epoxy resin emulsion prepared in step 1), and stir evenly to obtain water-based epoxy resin modified emulsified asphalt;

[0084] Put the water-based epoxy resin modified emulsified asphalt in a mixing pot, add 5000g of aggregates, stir at room temperature for 145s, and cur...

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PUM

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Abstract

The invention discloses reinforced emulsified asphalt concrete for roads and a preparation method of the concrete. The reinforced emulsified asphalt concrete for the roads comprises aggregate, waterborne epoxy resin emulsion and emulsified asphalt, wherein the weight ratio of aggregate to waterborne epoxy resin emulsion to emulsified asphalt is (90-110): (0.1-10): (7-20). The reinforced emulsified concrete disclosed by the invention can be used as cold-mixed and cold-laid asphalt concrete for being applied to spreading or repairing and the like of asphalt pavements, can solve the problems of high temperature sensitivity, insufficient binding capacity, poor durability and the like of traditional asphalt type material, and retains the advantages of low pollution and easiness in construction and operation of the emulsified asphalt and obtains excellent performances of high strength, high binding force, durability in use and the like through waterborne epoxy resin.

Description

technical field [0001] The invention belongs to the field of road engineering, and relates to an emulsified asphalt concrete and a preparation method thereof, in particular to a road-use reinforced emulsified asphalt concrete and a preparation method thereof. Background technique [0002] In recent years, most of the molding products that have been widely promoted and applied in the market are solvent-based cold-mix and cold-paving asphalt mixtures, which require a large amount of gasoline, kerosene, diesel, etc. as solvents. pollute the environment and cause a huge waste of resources. In addition, because the volatilization of diesel oil is very slow, the strength of the mixture after molding is low, the initial bonding performance is poor, and it is easy to scatter under the action of driving load. [0003] As a kind of thermosetting water-based material, water-based epoxy resin will gradually increase its strength with time. It uses a series of chemical and physical meth...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B24/28
Inventor 曹东伟张艳君李盈富张海燕贾晓鹏何敏吴小维贾鑫
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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