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Reactive liquid asphalt and its preparation method and application, water-reactive normal temperature asphalt mixture and its preparation method

A liquid asphalt, reactive technology, used in building thermal insulation materials, building components, buildings, etc., can solve the problems of affecting adhesion, large environmental temperature effects, slow strength development, etc., to achieve the effect of ensuring timeliness

Active Publication Date: 2021-12-31
广州市市维新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the strength of petroleum solvent-based normal-temperature asphalt mixture mainly depends on the volatilization of additives such as petroleum solvent. Therefore, this type of normal-temperature asphalt mixture has low initial strength, slow strength growth and poor durability.
The demulsification of emulsified asphalt in normal temperature asphalt mixture of emulsified asphalt takes a certain time, and is greatly affected by ambient temperature and humidity, resulting in low initial strength and slow strength development, and the emulsifier remaining at the interface between asphalt and aggregate will affect its Adhesion
Therefore, the traditional normal temperature asphalt mixture has the problems of insufficient early strength and poor durability

Method used

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  • Reactive liquid asphalt and its preparation method and application, water-reactive normal temperature asphalt mixture and its preparation method
  • Reactive liquid asphalt and its preparation method and application, water-reactive normal temperature asphalt mixture and its preparation method
  • Reactive liquid asphalt and its preparation method and application, water-reactive normal temperature asphalt mixture and its preparation method

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preparation example Construction

[0033] The present invention also provides the preparation method of described reactive liquid asphalt, comprises the following steps:

[0034] controlling the temperature of the asphalt and the reactive diluent, mixing the asphalt and the reactive diluent, and performing the first shearing to obtain the first mixed material;

[0035] The first mixed material is subjected to oven development for the first time, and then a toughening agent and a coupling agent are added to obtain a second mixed material;

[0036] The second mixed material is sequentially subjected to a second shearing and a second oven development to obtain a reactive liquid asphalt.

[0037] The present invention controls the temperature of bitumen and reactive diluent. In the present invention, the temperature of the asphalt is preferably 140-170°C, more preferably 140-160°C, and the temperature of the reactive diluent is preferably 20-80°C, more preferably 50-80°C. In the present invention, the process of ...

Embodiment 1

[0062] (1) 6kg70# asphalt, 3.1kg cashew nut shell oil, 0.7kg maleic anhydride modified liquid polybutadiene rubber, 0.2kg glycidoxypropyltrimethoxysilane (mass ratio is 60:31:7 :2) carry out batching, control the temperature of 70# bitumen to be 150°C, the temperature of cashew nut shell oil to be 60°C, carry out the first shearing of 70# bitumen and cashew nut shell oil at 140°C, the first shearing The speed is 700r / min, the time for the first shearing is 20min, and the first mixed material is obtained; the first mixed material is developed in the oven for the first time, and the time for the first oven development is 30min, and the oven developed for the first time The temperature is 60°C, then add maleic anhydride-modified liquid polybutadiene rubber and glycidoxypropyl trimethoxysilane, carry out the second shear at 60°C, the speed of the second shear It is 600r / min, and the time of shearing for the second time is 30min, obtains the second mixed material; The second mixed ...

Embodiment 2

[0065](1) 5kg70# asphalt, 4kg soybean oil, 0.85kg maleic anhydride modified liquid polybutadiene rubber, 0.15kg glycidoxypropyltrimethoxysilane (mass ratio is 50:40:8.5:1.5 ) for batching, control the temperature of 70# asphalt to 160°C, and the temperature of soybean oil to 50°C, carry out the first shearing of 70# asphalt and soybean oil at 150°C, and the speed of the first shearing is 600r / min, the time for the first shearing is 30min to obtain the first mixed material. The first mixed material was developed in the first oven. The time for the first oven development was 40 minutes, and the temperature for the first oven development was 50°C. Then, maleic anhydride-modified liquid polybutadiene rubber and epoxy resin were added. Propoxypropyltrimethoxysilane was subjected to a second shearing at 70° C., the speed of the second shearing was 500 r / min, and the time of the second shearing was 20 minutes to obtain a second mixed material. The second mixed material was develope...

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Abstract

The invention belongs to the field of road building materials and engineering, and in particular relates to a reactive liquid asphalt and its preparation method and application, a water-reactive normal temperature asphalt mixture and its preparation method. The reactive liquid asphalt provided by the present invention has good fluidity at room temperature, and can quickly release the viscosity of the asphalt under the action of the curing agent and water, and at the same time, the product formed by the reaction can increase the toughness of the asphalt. Normal temperature asphalt mixture greatly improves the early strength and durability of the mixture. Moreover, the present invention adopts a compact gradation with a porosity of less than 3%, which ensures the compactness of the water-reactive normal-temperature asphalt mixture and can avoid the influence of sunlight and other environmental factors on the asphalt pavement. The asphalt mixture has a thicker asphalt oil film, which improves the anti-seepage performance of the asphalt pavement, thereby improving the durability of the asphalt pavement.

Description

technical field [0001] The invention belongs to the field of road building materials and engineering, and in particular relates to a reactive liquid asphalt and its preparation method and application, a water-reactive normal temperature asphalt mixture and its preparation method. Background technique [0002] Traditional asphalt mixtures are mostly ordinary hot mix asphalt mixtures, and their mixing temperature is often around 160°C, which will consume a lot of fuel and other energy during production and construction, and emit a lot of carbon dioxide and other waste gases. The construction temperature range of warm-mix asphalt mixture is 110-130°C. Although the mixing temperature is lowered and the energy consumption and gas emission are reduced to a certain extent, the construction temperature is still relatively high. [0003] Normal temperature asphalt mixture (ie cold mix asphalt mixture) is used at normal temperature and can meet the requirements of green and low carbon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L91/00C08L53/02C08L9/00C08L51/04C08K5/5435C08K5/544C04B28/04
CPCC08L95/00C04B28/04C04B2111/0075C04B2201/50C04B24/36C08L91/00C08L53/02C08L9/00C08L51/04C08K5/5435C08K5/544
Inventor 彭馨彦许龙洪晶林勇文
Owner 广州市市维新材料科技有限公司