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Light foamed soil applied to backfill of tunnel entrance and exit and production method thereof

A lightweight foam, import and export technology, used in applications, household appliances, other household appliances, etc., can solve problems such as increasing the difficulty of excavation, destroying natural landforms, disturbing the balance of natural geological and geographical environment, and achieving fast construction speed. , The foam is stable and the effect of meeting the bearing capacity

Inactive Publication Date: 2015-11-11
河南华泰新材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, conventional construction methods usually require non-tunnel slope excavation and protection for the entrance and exit positions, which not only increases the difficulty of excavation, but more importantly, destroys the natural landform and disturbs the balance of the natural geological and geographical environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The lightweight foam soil used for backfilling tunnel entrances and exits of the present invention is made of the following components by weight: 120 parts of cement, 60 parts of silica fume powder, 45 parts of diatomite, 105 parts of fly ash, and 200 parts of water , 1 part of water reducer, 1 part of early strength agent, 1 part of accelerator, 0.0015 part of aluminum powder, 0.05 part of sodium gluconate, 5 parts of plant fiber, 5 parts of foaming agent, and 2 parts of microfoaming agent.

[0041] The cement in this embodiment is PO52.5 Portland cement.

[0042] The water reducer described in this embodiment is a naphthalene-based water reducer.

[0043] The early strengthening agent described in this embodiment adopts calcium chloride.

[0044] The foaming agent described in this embodiment is a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0045]...

Embodiment 2

[0047] The lightweight foam soil used for backfilling the entrance and exit of tunnels of the present invention is made of the following raw materials in parts by weight: 300 parts of cement, 5 parts of silica fume powder, 5 parts of diatomite, 45 parts of fly ash, and 100 parts of water , 5 parts of water reducer, 3 parts of early strength agent, 2 parts of accelerator, 0.005 parts of aluminum powder, 0.2 parts of sodium gluconate, 25 parts of plant fiber, 12 parts of foaming agent, and 10 parts of microfoaming agent.

[0048] The cement in this embodiment is PO52.5R Portland cement.

[0049] The water reducer described in this embodiment is a naphthalene-based water reducer.

[0050] The accelerator described in this embodiment uses sodium sulfate.

[0051] The foaming agent described in this embodiment is a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0...

Embodiment 3

[0054] The lightweight foam soil used for backfilling the entrance and exit of tunnels of the present invention is made of the following components by weight: 210 parts of cement, 32 parts of silica fume powder, 85 parts of diatomaceous earth, 57 parts of fly ash, 60 parts of water , 3 parts of water reducer, 2 parts of early strength agent, 3 parts of accelerator, 0.003 parts of aluminum powder, 0.125 parts of sodium gluconate, 15 parts of plant fiber, 10 parts of foaming agent, and 8 parts of microfoaming agent.

[0055] The cement in this embodiment is fast-setting Portland cement.

[0056] The water reducer described in this embodiment is a naphthalene-based water reducer.

[0057] The accelerator described in this embodiment uses sodium sulfate.

[0058] The foaming agent described in this embodiment is a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0...

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PUM

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Abstract

The invention provides light foamed soil applied to backfill of a tunnel entrance and exit and a production method of the light foamed soil, and relates to a building material and a production method of the building material. The light foamed soil applied to the backfill of the tunnel entrance and exit is prepared from the following raw materials of cement, silica fume, kieselguhr, coal ash, water, a water reducing agent, an early strength agent, an accelerating agent, aluminite powder, sodium gluconate, plant fiber, a foaming agent and a micro foaming agent. The light foamed soil provided by the invention is light in weight and high in strength, the whole performance is good, not only can the bearing capacity of a soil body in a soft soil area be met, but also the bearing capacity of an exchange filling foundation on upper load can be met, the load of a special subgrade is reduced, and the subgrade settlement is reduced.

Description

technical field [0001] The invention relates to a building material and a production method thereof, in particular to a lightweight foam soil used for backfilling the entrance and exit of tunnels and a production method thereof. Background technique [0002] During tunnel construction, the entrance and exit positions of the tunnel are irregular due to the natural landform, and there is a large bias during excavation, which is prone to collapse. For this reason, conventional construction methods usually require non-tunnel slope excavation and protection for the entrance and exit positions, which not only increases the difficulty of excavation, but more importantly, destroys the natural landform and disturbs the balance of the natural geological and geographical environment . [0003] CN102010223B provides an early-strength flexible air cell lightweight concrete filling composition, including the following components in parts by weight: 50-80 parts of Portland cement, 10-40 p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02C04B38/02C04B18/08C04B22/04C04B18/24
CPCY02W30/91
Inventor 张建华吕文朴孙根生李商岳志成许言言柳建付萌
Owner 河南华泰新材科技股份有限公司
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