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Slag-based road grouting material and preparation method thereof

A technology of grouting material and slag-based, which is applied in the field of road grouting material and its preparation, slag-based road grouting material and its preparation, and can solve the problems of poor stability, not dense slurry, complex production process, etc.

Inactive Publication Date: 2020-10-23
山东华迪建筑科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above-mentioned technology is that the prepared road grout uses cement as the cementitious material, and the cement hydration provides strength support for the grout
However, the cement production process consumes a lot of resources and energy. It requires 80 kilowatt-hours of electricity and 100kg of coal to produce one ton of cement. At the same time, a large amount of carbon dioxide is emitted, which has a huge impact on the environment.
Due to the complicated cement production process, clay, limestone and other components need to be added, which may easily cause problems such as poor adaptability and poor compatibility between cement and admixtures
During the construction process of the grout, the stability is poor, the loss of fluidity is obvious, the bleeding rate is high, the slurry is not dense, etc., causing some potential safety hazards

Method used

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  • Slag-based road grouting material and preparation method thereof
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  • Slag-based road grouting material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing slag-based road pressure slurry, comprising the following steps:

[0036] (1) Accurately weigh the gelling material and the admixture of the prescribed amount according to the proportioning in Table 1;

[0037] (2) Mix the materials evenly and add them to the slurry mixing pot together with water, adjust the slurry mixer at a speed of 700r / min, stir for 1min, then adjust the speed to 3000r / min, and stir for 3min.

[0038] (3) Use the press slurry flow cone funnel to measure the initial, 30min, and 60min fluidity of the press slurry, put the evenly stirred press slurry into a standard triple test mold of 40*40*160 evenly coated with butter, and vibrate evenly , and smooth out;

[0039] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperature curing box, and cure it for 3 days, 7 days, and 28 days respectively, and test the flexural strength and compressive strength. The fluidity, flexural strength, compress...

Embodiment 2

[0045] A method for preparing slag-based road pressure slurry, comprising the following steps:

[0046] (1) Accurately weigh the gelling material and admixture of the specified amount according to the proportioning in Table 3;

[0047] (2) Mix the materials evenly and add them to the slurry mixing pot together with water, adjust the slurry mixer at a speed of 700r / min, stir for 1min, then adjust the speed to 3000r / min, and stir for 3min.

[0048] (3) Use the press slurry flow cone funnel to measure the initial, 30min, and 60min fluidity of the press slurry, put the evenly stirred press slurry into a standard triple test mold of 40*40*160 evenly coated with butter, and vibrate evenly , and smooth out;

[0049] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperature curing box, and cure it for 3 days, 7 days, and 28 days respectively, and test the flexural strength and compressive strength. The fluidity, flexural strength, compressive s...

Embodiment 3

[0056] A method for preparing slag-based road pressure slurry, comprising the following steps:

[0057] (1) Accurately weigh the gelling material and the admixture of the prescribed amount according to the proportioning in Table 5;

[0058](2) Mix the materials evenly and add them to the slurry mixing pot together with water, adjust the slurry mixer at a speed of 700r / min, stir for 1min, then adjust the speed to 3000r / min, and stir for 3min.

[0059] (3) Use the press slurry flow cone funnel to measure the initial, 30min, and 60min fluidity of the press slurry, put the evenly stirred press slurry into a standard triple test mold of 40*40*160 evenly coated with butter, and vibrate evenly , and smooth out;

[0060] (4) Leave the mold at room temperature for 24 hours, put it into a standard constant temperature curing box, and cure it for 3 days, 7 days, and 28 days respectively, and test the flexural strength and compressive strength. The fluidity, flexural strength, compressi...

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Abstract

The invention provides a slag-based road grouting material and a preparation method thereof. The slurry is stable, the precipitation and separation phenomena are avoided, and the compressive strengthof each age, the fluidity at different time and the expansion rate meet the standard requirements. The slag-based road grouting material comprises a cementing material and an additive, the cementing material comprises the following raw materials: 50-70 parts of slag powder, 6-10 parts of desulfurized gypsum, 5-9 parts of a special alkaline activator for slag, and 20-30 parts of fly ash, and the additive is prepared from the following raw materials in parts by weight: 0.3-0.4 parts of a hypophosphite modified polycarboxylate superplasticizer, 0.1-0.2 parts of a retarder, 0.5-0.6 parts of an expanding agent, and 0.04-0.06 parts of an antifoaming agent.

Description

technical field [0001] The invention relates to a road press slurry and a preparation method, in particular to a slag-based road press slurry and a preparation method, and belongs to the technical field of building materials. Background technique [0002] In the construction process of highway and railway bridges, prestressed construction technology has been widely used. Filling the prestressed construction sleeve with tunnel press grout is an important link in the construction process. High-quality grout can ensure that the prestressed steel bars are not corroded, ensure that the prestressed load of the steel bars is transmitted between the steel bars and the concrete, and at the same time eliminate the damage to the mold caused by repeated loads. [0003] Patent 1 (publication number: CN107840622A) discloses a preparation method of road press grout, using ordinary Portland cement, sulphoaluminate clinker powder, mineral admixture, and composite activator as cementitious m...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B7/21B28B1/08B28C5/00
CPCC04B28/006C04B7/21B28C5/006B28B1/08C04B2201/50C04B2111/00017C04B22/0006C04B22/145C04B24/42C04B22/062C04B2103/302C04B2103/22C04B2103/50Y02P40/10
Inventor 常青山周在波付鹏逄鲁峰耿磊郎慧东王敏王恒程鹏张健壮张攀
Owner 山东华迪建筑科技有限公司
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