A slow-release anti-freezing point asphalt pavement admixture and preparation method thereof

An asphalt pavement, slow-release technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of high cost, unsatisfactory slow-release effect, general long-term performance, etc. Long-lasting effect

Active Publication Date: 2019-07-02
山东生态新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the halide deicing agent disclosed in the above-mentioned patent has a good anti-coagulation deicing effect, the cost is relatively high, and the slow-release effect is not ideal, and the long-term performance is average.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A slow-release anti-freezing point asphalt pavement admixture is prepared from modified volcanic rock powder, freezing point depressant and surfactant; the mass percentage of each raw material component is: modified volcanic rock powder is 40%, chlorine Sodium is 55%, Sipan 80 is 5%;

[0041] A preparation method of a slow-release anti-freezing point asphalt pavement admixture, carried out according to the following steps:

[0042] (1) material preparation

[0043] After the volcanic rock is ground, it is calcined at 800°C to obtain a specific surface area greater than 300m 2 / kg of modified volcanic rock powder;

[0044] Add sodium chloride to water to make a saturated aqueous solution of sodium chloride.

[0045] (2) Preparation of salt carrier

[0046] According to the proportion, add the modified volcanic rock powder into saturated aqueous sodium chloride solution, stir at 25°C for 4 hours at a stirring rate of 2500r / min, and after mixing thoroughly, dry at 135°C ...

Embodiment 2

[0052] A slow-release anti-freezing point asphalt pavement admixture is prepared from modified volcanic rock powder, freezing point depressant and surfactant; each raw material component and its mass percentage are: modified volcanic rock powder is 40%, Sodium chloride is 55%, Span 60 is 5%;

[0053] A preparation method of a slow-release anti-freezing point asphalt pavement admixture, carried out according to the following steps:

[0054] (1) material preparation

[0055] After the volcanic rock is ground, it is calcined at 800°C to obtain a specific surface area greater than 300m 2 / kg of modified volcanic rock powder;

[0056] Add sodium chloride to water to make a saturated aqueous solution of sodium chloride.

[0057] (2) Preparation of salt carrier

[0058] According to the proportion, add the modified volcanic rock powder into the saturated sodium chloride aqueous solution, stir at 25°C for 4 hours at a stirring rate of 3000r / min, after mixing thoroughly, dry at 135...

Embodiment 3

[0064] A slow-release anti-freezing point asphalt pavement admixture is prepared from modified volcanic rock powder, freezing point depressant and surfactant; each raw material component and its mass percentage are: modified volcanic rock powder is 40%, Sodium chloride is 55%, OP-10 is 5%;

[0065] A preparation method of a slow-release anti-freezing point asphalt pavement admixture, carried out according to the following steps:

[0066] (1) material preparation

[0067] After the volcanic rock is ground, it is calcined at 800°C to obtain a specific surface area greater than 300m 2 / kg of modified volcanic rock powder;

[0068] Add sodium chloride to water to make a saturated aqueous solution of sodium chloride.

[0069] (2) Preparation of salt carrier

[0070] According to the proportion, add the modified volcanic rock powder into the saturated sodium chloride aqueous solution, stir at 25°C for 5h at a stirring rate of 2500r / min, after mixing thoroughly, dry at 130°C unti...

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Abstract

The invention discloses a sustained-release anti-freezing point asphalt pavement admixture and a preparation method thereof and belongs to the technical field of preparation and application of environmental-friendly snow-melting agents. The sustained-release anti-freezing point asphalt pavement admixture is prepared from the following components in percentage by mass: 35-45% of modified volcanic powder, 52-63% of a freezing point drop agent and 2-6% of a surfactant. The preparation method comprises the following steps: (1) grinding volcanic, and performing calcining modification; (2) preparing a salinized carrier; (3) preparing a surfactant sustained-release solution; and (4) adding the surfactant sustained-release solution into the salinized carrier, and stirring, thereby obtaining the sustained-release anti-freezing point asphalt pavement admixture. The admixture has good freezing and snow-melting performances and has long-lasting action, and the winter pavement management and maintenance cost is greatly reduced. Lots of volcanic serve as raw materials, so that the price is relatively low, and the cost is saved. The method is simple in process and readily available in equipment raw materials, and large-scale production can be realized.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of an environment-friendly deicing agent, and in particular relates to a slow-release anti-condensation point asphalt pavement admixture and a preparation method thereof. Background technique [0002] In recent years, the rapid development of my country's economy has led to rapid development of highway construction and urban road construction. However, as the road network continues to expand, the problems on the road also increase accordingly. Especially in the northern part of our country, as soon as winter enters, many highways and urban roads are more common to be covered with snow and freeze, which leads to a sharp decline in the anti-skid performance of the road surface, which is extremely detrimental to the driveability and safety of driving vehicles, and even causes traffic accidents. . At present, manual removal and the use of chloride deicing agents are commonly used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18C04B24/08C04B24/32C04B14/14C04B22/12
CPCC04B40/0039C04B14/14C04B22/124C04B24/085C04B26/26C04B24/32
Inventor 赵苏魏巍陈健杨笑影
Owner 山东生态新材料有限公司
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