Multifunctional composite additive for X-Pave ultrathin pavement as well as preparation and use methods of multifunctional composite additive

A compound additive and multi-functional technology, applied in the field of road paving materials, can solve the problems of unfavorable small-scale maintenance projects, complex production and use processes, etc., and achieve the effects of improving anti-stripping performance, reducing raw material costs, and reducing pollution

Pending Publication Date: 2022-07-26
江苏创为交通科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problems of excessive reliance on special high-performance modified asphalt materials in the application of existing ultra-thin pavement technology, the use of various external admixtures leads to complicated production and use processes, and is not conducive to the application of small-scale maintenance projects. The practical experience and professional knowledge accumulated in the design and manufacture of such products, after careful design and repeated verification, prepared a multifunctional composite additive for X-Pave ultra-thin pavement, and provided its detailed preparation and use methods to Overcome the above-mentioned deficiencies in the existing technology, make the ultra-thin pavement technology more practical and industrialized, and provide beneficial technical support for its large-scale promotion and application

Method used

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  • Multifunctional composite additive for X-Pave ultrathin pavement as well as preparation and use methods of multifunctional composite additive
  • Multifunctional composite additive for X-Pave ultrathin pavement as well as preparation and use methods of multifunctional composite additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) first weigh 200g of regenerated LDPE particles, 100g of chopped basalt fiber surface-treated with 3mm silane coupling agent and mix in a high-speed mixer, the mixing time is 3min, and extrude and granulate to obtain blend A, The screw feed temperature was 120°C, the melt processing temperature was 160°C, and the pelletizing die temperature was 140°C.

[0050] (2) Weigh 100g SBS, 200g regenerated TPR, 50g aromatic hydrocarbon-based rubber oil respectively, after mixing 3min in the high-speed mixer, add 150g stearic acid amide and the blend A prepared by the above step (1), and then After stirring and mixing for 5 minutes, it was added to the feeding funnel of the twin-screw extruder for extrusion and granulation. Then, the multifunctional composite additive 1 for X-Pave ultra-thin pavement was obtained.

[0051] Application of X-Pave multifunctional composite additive for ultra-thin pavement 1:

[0052] S1. Heat the I-D modified asphalt to 160°C, according to the X...

Embodiment 2

[0058] (1) Weigh 300g of regenerated LDPE particles and 120g of chopped polyester fibers surface-treated with 6mm silane coupling agent, respectively, and mix them in a high-speed mixer. The mixing time is 3min, and extrude and granulate to obtain blend A. , the screw feeding temperature is 140 ℃, the melt processing temperature is 180 ℃, and the pelletizing die temperature is 150 ℃.

[0059] (2) Weigh 200g SBS, 200g regenerated TPR, 80g naphthenic rubber oil respectively, after mixing 4min in the high-speed mixer, add 200g erucamide and the blend A prepared in the above step (1), and then add After stirring and mixing for 5 minutes, it was added to the feeding funnel of the twin-screw extruder for extrusion and granulation. Then, the multifunctional composite additive 2 for X-Pave ultra-thin pavement was obtained.

[0060] Application of X-Pave Multifunctional Compound Additive 2 for Ultra-thin Pavement:

[0061] S1. Heat the I-D modified asphalt to 165°C. According to the ...

Embodiment 3

[0065] (1) Weigh 400g of regenerated LDPE particles and 150g of chopped glass fibers surface-treated with 6mm silane coupling agent, respectively, and mix them in a high-speed mixer. The mixing time is 4min, and extrude and granulate to obtain blend A. The screw feed temperature was 140°C, the melt processing temperature was 180°C, and the pelletizing die temperature was 150°C.

[0066] (2) Weigh 300g of SBS, 100g of regenerated TPR, 100g of paraffin-based rubber oil respectively, mix them in a high-speed mixer for 5min, then add 200g of oleic acid amide and the blend A prepared in the above step (1), and then carry out After stirring and mixing for 5 minutes, it was added to the feeding funnel of the twin-screw extruder for extrusion and granulation. The multifunctional composite additive 3 for X-Pave ultra-thin pavement was obtained.

[0067] Application of X-Pave Multifunctional Compound Additive 3 for Ultra-thin Pavement:

[0068] S1. Heat the I-D modified asphalt to 165...

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Abstract

The invention relates to the technical field of road pavement materials, in particular to a multifunctional composite additive for X-Pave ultrathin pavement and a use method of the multifunctional composite additive. The composite additive is prepared from a butadiene-styrene-butadiene copolymer, regenerated thermoplastic rubber, rubber filling oil, regenerated LDPE particles, high-melting-point chopped fibers subjected to surface treatment by a silane coupling agent and a low-melting-point amide compound. The composite additive disclosed by the invention can be mixed with aggregate in a direct feeding manner to produce a high-performance asphalt mixture, and the asphalt mixture has the properties of warm mixing, high viscosity, rut resistance, crack resistance, water damage resistance and the like. The asphalt mixture prepared by utilizing the composite additive is easy to compact, has excellent pavement performance such as high and low temperature resistance, fatigue resistance, water damage resistance and stripping resistance, and can obviously improve the use durability of an asphalt pavement; the asphalt mixture can be applied to preventive maintenance of asphalt pavements such as steel bridge decks, cement concrete bridge decks, airport runways, expressways and the like or surface wearing layers of newly-built asphalt pavements.

Description

technical field [0001] The invention relates to the technical field of road paving materials, in particular to a multifunctional composite additive for X-Pave ultra-thin paving and a method for preparing and using the same. Background technique [0002] During the service process of asphalt pavement, diseases such as rutting, cracks and decline in anti-skid performance often occur. If these problems are not dealt with in time, on the one hand, the road safety will be affected, and on the other hand, some diseases will easily deteriorate and cause structural damage to the pavement. . In recent years, ultra-thin pavement (1.0-2.5cm) technology has been widely used in preventive maintenance projects due to its superior anti-rutting, anti-cracking, anti-skid and other characteristics, and has achieved good use. Effect. [0003] The ultra-thin paving technologies currently used at home and abroad mainly include ECA, Novachip thin-layer covering, SMC modified asphalt mixture, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B26/26
CPCC04B40/0039C04B26/26C04B2111/0075C04B2111/00017C04B24/2688C04B18/22C04B24/2611C04B24/42C04B14/46C04B2103/0068C04B24/124C04B14/02
Inventor 马志华徐德根顾临皓王小虎臧冬冬刘杰
Owner 江苏创为交通科技发展有限公司
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