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Emulsified asphalt composite blast furnace slag, cinder roadbed grouting material and preparation method thereof

A technology of grouting material and emulsified asphalt, which is applied in the field of grouting reinforcement or repair of road base, which can solve the problems of long setting time, low early strength and poor injectability, and achieve short curing time, high early strength, and improved phase capacitive effect

Active Publication Date: 2019-06-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cement-based grouting material is the most widely used grouting material in my country, but it has the problems of poor injectability, low early strength and long setting time

Method used

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Examples

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Effect test

preparation example Construction

[0034] Another embodiment of the present disclosure provides a method for preparing the above roadbed grouting material, the steps are as follows:

[0035] (1) Preparation of cationic emulsified asphalt: heat the asphalt to 150-160°C to make the asphalt reach a good flow state; in the stirring mode, mix the cationic surfactant, acidity regulator and water evenly, in order to make the paste surface active The agent can be evenly dissolved in water. When mixing, the temperature should be kept at 40-60°C to obtain a mixed solution. Mix the heated asphalt with the mixed solution to obtain cationic emulsified asphalt;

[0036] (2) Cool the cationic emulsified asphalt prepared in (1), then add cement, early strength agent and water reducing agent, and obtain A component after stirring;

[0037] (3) breaking blast furnace slag powder and cinder powder respectively;

[0038] (4) Heating the crushed blast furnace slag powder and cinder powder in step (3) to 500-600°C to activate them an...

Embodiment 1

[0049] (1) Weigh 600g of heavy traffic road asphalt AH-50, and heat the asphalt to 160°C; weigh 20g of lignin cationic surfactant, 46g of acidity regulator acetic acid and 380g of water, mix them evenly under stirring mode and maintain The temperature is 45°C; the asphalt and the above mixed solution are processed and emulsified for 3 minutes under the colloid mill, and the rotation speed of the colloid mill is set at 5000rpm.

[0050] (2) Cool the cationic emulsified asphalt prepared in (1) to 30°C, then add 300g of cement, 12g of aluminum chloride accelerator and 10g of lignosulfonate superplasticizer, and stir for 10min to obtain component A.

[0051] (3) Weigh 600g of blast furnace slag powder and 600g of cinder powder according to the amount, carry out preliminary crushing respectively, and then use a ball mill to grind for 15-30 minutes, and after sieving, the specific surface area is 360-430m 2 / kg blast furnace slag powder and specific surface area is 300~430m 2 / kg o...

Embodiment 2

[0057] (1) Weigh 600g of heavy traffic road asphalt AH-30, and heat the asphalt to 155°C; weigh 24g of cationic surfactant alkylimidazoline methyl sulfate, and 22g of acidity regulator hydrochloric acid (concentration: 37%) and 450g of water, mix well under stirring mode and maintain the temperature at 55°C; process and emulsify the asphalt and the above mixed solution under the colloid mill for 5 minutes, and the speed of the colloid mill is set at 8000rpm.

[0058] (2) Cool the cationic emulsified asphalt prepared in (1) to 30°C, then add 340g of pozzolanic portland cement, 12g of calcium chloride early strength agent and 10g of naphthalenesulfonate formaldehyde polymer water reducer, and stir for 12min , to obtain component A.

[0059] (3) Weigh 800g of blast furnace slag powder and 400g of cinder powder according to the amount, carry out preliminary crushing respectively, and then use a ball mill to grind for 15-30 minutes, and after sieving, the specific surface area is 3...

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Abstract

The invention discloses a subgrade grouting material for emulsified asphalt composite blast furnace slag and coal slag, and a preparation method thereof. The subgrade grouting material is formed by mixing a component A and a component B according to the mass ratio of 1:(1-3), wherein the component A consists of cation emulsified asphalt, cement, an early strength agent and a water reducing agent;the component B consists of the blast furnace slag and the coal slag. The subgrade grouting material disclosed by the invention is energy-saving and environmentally-friendly, has the characteristics of high early strength, short curing time, adjustable and controllable intensity and good compatibility with an original subgrade and an original pavement in terms of performance, has the beneficial effects that the construction is simple, the operation is convenient, the number of personnel required for construction can be effectively reduced, the efficiency is improved, the subgrade repair cost is reduced in terms of construction, thereby having greater economic and social benefits.

Description

technical field [0001] The invention relates to the field of road engineering materials, in particular to a method for preparing grouting materials with emulsified asphalt, blast furnace slag, cinder, etc. as main raw materials, and is mainly suitable for grouting reinforcement or repair of road bases. Background technique [0002] The statements herein merely provide background information related to the present invention and may not necessarily constitute prior art. [0003] The grouting technology mainly injects grout into the underground engineering or road base by hydraulic pressure or air pressure to improve its strength, anti-seepage ability and stability, thereby improving the mechanical properties of underground engineering or road base. Through grouting technology, it can effectively solve the shortcomings of complex construction, impact on traffic, time-consuming and labor-intensive, and high economic costs caused by steps such as raising the road surface, cleanin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B28/04C04B111/72
CPCC04B28/02C04B28/04C04B2111/0075C04B2111/72C04B2201/50C04B24/36C04B2103/404C04B24/04C04B22/12C04B24/18C04B18/142C04B18/0427C04B22/122C04B22/124
Inventor 梁明辛雪姚占勇张吉哲蒋红光
Owner SHANDONG UNIV
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