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Modified graphene oxide doped rubber asphalt mixture and preparation method thereof

A rubber asphalt and graphene technology is applied in the field of road petroleum asphalt to achieve the effects of improving rutting resistance, high adhesion, and good durability and aging resistance.

Inactive Publication Date: 2019-05-28
辽宁瑞德公路科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above prior art, in order to solve the problems of high temperature stability and production of modified asphalt, the present invention provides a preparation method of hypophosphorous acid modified graphene oxide doped rubber asphalt mixture, which has simple process and easy operation. Hypophosphorous acid modified graphene oxide doped rubber asphalt mixture is used in highway asphalt pavement construction. It has high temperature rutting resistance and construction stability, good durability and aging resistance, and has excellent cost performance. functional pavement

Method used

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  • Modified graphene oxide doped rubber asphalt mixture and preparation method thereof
  • Modified graphene oxide doped rubber asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation of hypophosphorous acid modified graphene oxide

[0026] Mix 0.5g graphene oxide with 500mL distilled water and sonicate for 1h to obtain a graphene oxide dispersion, then mix with 10.0gH 3 PO 2 After mixing in a 1000mL flask, react at 90°C for 24h, centrifuge, wash and freeze-dry to obtain hypophosphorous acid modified graphene oxide, its infrared spectrum is as follows figure 1 Shown; at 1317cm -1 and 777cm -1 The infrared absorption peaks that appear at the place are the infrared absorption peaks of -P=O and -P-C bonds, so it can be seen that phosphorus-modified graphene oxide FGO has been successfully prepared through the reaction of hypophosphorous acid and GO;

[0027] (2) Select sand and gravel aggregate

[0028] The fineness of the sand aggregate meets the following requirements:

[0029] When the sieve size is 16.0mm, the sieve pass rate of the sand aggregate is 100%;

[0030] When the sieve size is 13.2mm, the sieve pass rate of the sand ...

Embodiment 2

[0038] (1) Preparation of hypophosphorous acid modified graphene oxide

[0039] Mix 0.5g graphene oxide with 500mL distilled water and sonicate for 1h to obtain a graphene oxide dispersion, then mix with 10.0gH 3 PO 2 After mixing in a 1000mL flask, react at 90°C for 24h, centrifuge, wash and freeze-dry to obtain hypophosphorous acid-modified graphene oxide;

[0040] (2) Select sand and gravel aggregate

[0041] The fineness of the sand aggregate meets the following requirements:

[0042] When the sieve size is 16.0mm, the sieve pass rate of the sand aggregate is 100%;

[0043] When the sieve size is 13.2mm, the sieve pass rate of the sand aggregate is 85-100%;

[0044] When the sieve size is 9.5mm, the sieve pass rate of the sand aggregate is 60-80%;

[0045] When the sieve size is 4.75mm, the sieve pass rate of the sand aggregate is 25-40%;

[0046] When the sieve size is 2.36mm, the sieve pass rate of the sand aggregate is 10-20%

[0047] When the sieve size is 0.075...

Embodiment 3

[0051] (1) Preparation of hypophosphorous acid modified graphene oxide

[0052] Mix 0.5g graphene oxide with 500mL distilled water and sonicate for 1h to obtain a graphene oxide dispersion, then mix with 10.0gH 3 PO 2 After mixing in a 1000mL flask, react at 90°C for 24h, centrifuge, wash and freeze-dry to obtain hypophosphorous acid-modified graphene oxide;

[0053] (2) Select sand and gravel aggregate

[0054] The fineness of the sand aggregate meets the following requirements:

[0055]When the sieve size is 16.0mm, the sieve pass rate of the sand aggregate is 100%;

[0056] When the sieve size is 13.2mm, the sieve pass rate of the sand aggregate is 85-100%;

[0057] When the sieve size is 9.5mm, the sieve pass rate of the sand aggregate is 60-80%;

[0058] When the sieve size is 4.75mm, the sieve pass rate of the sand aggregate is 25-40%;

[0059] When the sieve size is 2.36mm, the sieve pass rate of the sand aggregate is 10-20%

[0060] When the sieve size is 0.075m...

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Abstract

The invention provides a modified graphene oxide doped rubber asphalt mixture and a preparation method thereof. The method comprises the following steps: melting road 90 # petroleum asphalt at the temperature of 180-220 DEG C and adding rubber powder, an antioxygen, a heat stabilizer, and a deodorant to obtain rubber asphalt; stirring sand aggregate at the temperature of 60 DEG C, adding hypophosphorous acid modified graphene oxide at the same time and stirring to obtain a mixture; then adding the rubber asphalt into the mixture and stirring to obtain the hypophosphorous acid modified grapheneoxide doped rubber asphalt mixture. The modified graphene oxide doped rubber asphalt mixture and the preparation method thereof have the advantages that the technology is simple, the operation is easy, after the hypophosphorous acid modified graphene oxide doped rubber asphalt mixture is applied to road asphalt pavement construction, high-temperature rut resistance, construction stability, durability, ageing resistance and excellent cost performance are realized, and the mixture can satisfy the requirement of a pavement with a waterproof function.

Description

technical field [0001] The invention relates to the technical field of road petroleum asphalt, in particular to a preparation method of hypophosphorous acid modified graphene oxide doped rubber asphalt mixture. Background technique [0002] With the development of social economy and the improvement of transportation conditions, the traffic volume of the highway is increasing day by day, the load-bearing capacity of the asphalt pavement is limited, and the huge amount of traffic flow will cause the rutting of the asphalt pavement over time. At the same time, after the road has been used for a period of time, longitudinal cracks will occur. The lack of road drainage facilities makes rainwater go deep down the road along the longitudinal cracks, which aggravates the road rutting disease. Affected by the properties of the asphalt mixture, the asphalt pavement is black and has a strong heat absorption capacity. When the temperature is high, it will absorb a large amount of heat. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/02
Inventor 刘京澎张海军龙佳朋郝丕琳李宏军彭丽敏雷俊霞
Owner 辽宁瑞德公路科技有限公司