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Subgrade reinforcing quick-setting grouting material and preparation method thereof

A grouting material and reinforcement technology, which is applied in the field of roadbed grouting materials, can solve problems such as poor working performance, high price, and high energy consumption in production, and achieve the effects of good fluidity, high calculus rate, and increased utilization rate

Inactive Publication Date: 2019-10-15
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using cement as grouting material produces high energy consumption, high price, and poor working performance

Method used

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  • Subgrade reinforcing quick-setting grouting material and preparation method thereof
  • Subgrade reinforcing quick-setting grouting material and preparation method thereof

Examples

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Comparison scheme
Effect test

preparation example Construction

[0030] A kind of preparation method of subgrade reinforcement quick-setting grouting material of the present invention comprises following specific steps:

[0031] Step 1), prepare B solution: mix the weighed water glass solution and NaOH solid until NaOH is completely dissolved to obtain B solution, since the NaOH solid dissolves in the water glass solution and will release heat, it needs to be stirred slowly when stirring;

[0032] Step 2), mix the above-mentioned blast furnace slag powder and fly ash that have been weighed uniformly, then put water reducing agent and water into the uniformly mixed blast furnace slag powder and fly ash and stir to obtain the A mixture, specifically, add Stir the water reducer and water at 50-100r / min for at least 5min, then at 200-300r / min for at least 5min to obtain the A mixture;

[0033] Step 3), mix B solution and A mixture evenly to obtain roadbed reinforcement quick-setting grouting material; specifically, pour B solution into A mixtur...

Embodiment 1

[0035] Step 1), get the following raw materials by mass fraction:

[0036] 120 parts of blast furnace slag powder above S95 grade, 80 parts of F grade fly ash, 90 parts of water, 40 parts of water glass solution, 3 parts of NaOH solid, and 1 part of water reducer.

[0037] Step 2), pour the weighed NaOH solid into the water glass solution and stir until the NaOH is completely dissolved to obtain the B solution;

[0038] Step 3), dry-mix the weighed blast furnace slag powder and fly ash in a mixer, then add water reducing agent and water in turn, stir at 100r / min for 5min, then stir at 200r / min for 7min, and obtain A mixture;

[0039] Step 4), mix solution B and mixture A, and stir at 300 r / min for 2 minutes to obtain a grouting material.

[0040] Use the grouting pressure pump and the grouting pipe to inject the prepared grouting material into the designated area for grouting filling. Then the performance of the grouting material was tested, and the performance of the grout...

Embodiment 2

[0043] Step 1), get the following raw materials by mass fraction:

[0044] 120 parts of blast furnace slag powder above S95 grade, 100 parts of F grade fly ash, 80 parts of water, 30 parts of water glass solution, 2 parts of NaOH solid, 2 parts of water reducer;

[0045]Step 2), pour the weighed NaOH solid into the water glass solution and stir until the NaOH is completely dissolved to obtain the B solution;

[0046] Step 3), dry mix the weighed blast furnace slag powder and fly ash in a mixer, then add water reducer and water in turn, stir at 50r / min for 8min, then stir at 300r / min for 5min, to obtain A mixture;

[0047] Step 4), mix solution B and mixture A, and stir at 300 r / min for 2 minutes to obtain a grouting material.

[0048] Use the grouting pressure pump and the grouting pipe to inject the prepared grouting material into the designated area for grouting filling. Then the performance of the grouting material was tested, and the performance of the grouting material...

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Abstract

The invention discloses a subgrade reinforcing quick-setting grouting material and a preparation method thereof. The preparation method comprises the following steps: mixing blast furnace slag powderwith fly ash according to a specific mass fraction, enabling the mixed surface of the blast furnace slag powder and the fly ash to be fully contacted, utilizing silica and alumina contained in the flyash and calcium oxide and silica contained in the slag powder, then mixing water, a water glass solution, a NaOH solid and a water reducer to form a reflection solution, dissolving active silicon, aluminum and calcium substances in the fly ash and the slag powder by using the water glass solution and NaOH and then performing reagglomeration to form C-S-H hydrated calcium silicate and C-S-A-H hydrated calcium aluminosilicate hydration products. According to the preparation method, alumina in the fly ash and the slag powder is firstly reacted by using a solution comprising the water glass solution and NaOH, so that excessively fast condensation caused by excessive fly ash can be prevented, the post removal of calcium oxide can be ensured to reflect the growth of reinforcing materials, the utilization rate of the blast furnace slag powder and the fly ash can be effectively improved, and the working performance of the grouting material can be improved at the same time.

Description

technical field [0001] The invention relates to the field of roadbed grouting materials, in particular to a roadbed reinforcing quick-setting grouting material and a preparation method thereof. Background technique [0002] A large amount of blast furnace slag powder is produced in the smelting of iron and steel in various parts of my country. Thermal power plants will produce a large amount of fly ash. Blast furnace slag powder and fly ash are industrial solid wastes. Stacking not only requires land occupation but also produces dust pollution to surrounding areas. [0003] With the continuous increase of highway traffic volume, in some places with poor geology, the local strength of the subgrade is insufficient, the subsidence of the subgrade or the dynamic water erosion of the base, resulting in different degrees of subsidence of the road surface or hollowing out of the bottom of the slab, which poses a serious hazard to the safety of vehicles on the road. . Among them, s...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B111/70
CPCC04B28/26C04B2111/0075C04B2111/70C04B2201/50C04B18/142C04B18/08C04B22/062C04B2103/302
Inventor 张争奇田中男李艳军李乃强徐玉峰唐亨山桂增俭许铖程根源常庆喜
Owner CHANGAN UNIV
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