CN103387370B - Fine sand grouting material for ice-rich soil - Google Patents

Fine sand grouting material for ice-rich soil Download PDF

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Publication number
CN103387370B
CN103387370B CN201310333588.8A CN201310333588A CN103387370B CN 103387370 B CN103387370 B CN 103387370B CN 201310333588 A CN201310333588 A CN 201310333588A CN 103387370 B CN103387370 B CN 103387370B
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China
Prior art keywords
cao
grog
grouting
sand
tailings
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Expired - Fee Related
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CN201310333588.8A
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Chinese (zh)
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CN103387370A (en
Inventor
宫振鑫
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MINGYUAN NEW MATERIALS TECHNOLOGY DEVELOPMENT CO., LTD.
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DALIAN MINGYUANQUAN BUILDING MATERIALS Co Ltd
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Priority to CN201310333588.8A priority Critical patent/CN103387370B/en
Publication of CN103387370A publication Critical patent/CN103387370A/en
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Abstract

The invention provides a fine sand grouting material for ice-rich soil. The grouting material is characterized by taking C3S-C2S-C4A3S-CaO as an essential mineral clinker, grinding C3S-C2S-C4A3S-CaO, gypsum and industrial tailings jointly to prepare a master batch of a cementing material, then adding fine sand or tailing sand with a grain size of 6-10mu m, adding water and stirring the mixtures, thus preparing the grouting material. The grouting material has the beneficial effects that the grouting material is prepared by taking C3S-C2S-C4A3S-CaO as the essential mineral clinker; the mortar fluidity is generally controlled around 400mm; the setting time is 30-60 minutes; the strength of a composite soil layer varies between 0.2MPa and 2.5MPa with variation of the grout amount between 3% and 20%; and the grouting material is especially suitable for fracturing grouting of permafrost with low sand contents so as to prevent soil layer collapse and perform stabilization pre-treatment.

Description

A kind of fine sand type rich ice soil property injecting paste material
Technical field
The present invention relates to a kind of building cementing material, specifically a kind of fine sand type rich ice soil property injecting paste material.
Background technology
Traditional winter executes spraying technique and often adopts OPC cement to add antifreezing agent, air entraining agent, accelerator etc. to reach and reduce liquid phase freezing point temperature, shorten setting time, improve freezing tolerance and obtain early strength, but when-30 DEG C of ultralow temperature, because the hydration and hardening of ordinary cement is slow, resist the ability extreme difference of ultralow temperature freeze injury, a large amount of antifreeze air entraining agent must be added, antifreeze and do not strengthen, soon solidifying and unhappy firmly, many, the impervious differences of concrete bubble, therefore concrete later strength and durability significantly reduce.Normal appearance cracking, crisp broken, peel off, the tunnel defect such as Mao Shui, seepage, extension ice, humidity, extreme influence construction quality.
Such as: under central development of the West Regions decision-making, large quantities of engineering project enters western part.Highway, railway, bridge, riverbed, hillside all need to build to be administered.State key project financing the Qinghai-Tibet Railway need pass through 547 kilometers of permafrost soil locations for many years, the Frozen Earth Railway Roadbed that dewaters is solidified, the nearly 5000m of height above sea level along the line broken section, weathered rock formation, richness (satisfy) ice soil property, landslide etc. all need outside supporting process, the water frozen soil layer tunnel urgent need ultralow temperature slip casting of two total lengths 3024 meters, injection.But traditional material and Dong Shi technology can not meet the construction requirement of severe cold area completely, such as tooth timberline, tender timberline, southern weak line etc., permafrost, Nan Han tunnel are due to weather severe cold, tunnel defects such as generally ftractureing in tunnel, shortcake is broken, peel off, hang ice, Mao Shui, ponding, freeze, serious threat owner of a trading company or a workshop safety and service life, maintenance work is heavy, administers very difficult.This is mainly low due to temperature, concrete Microstructure Fracture, caused by infiltration, Chen Rong vicious circle etc.
Summary of the invention
The object of this invention is to provide a kind of fine sand type rich ice soil property injecting paste material, be particularly suitable for sand content low use frozen soil layer fracture grouting, prevent soil layer from subsiding and reinforce pretreatment.
Technical scheme of the present invention is achieved in that a kind of fine sand type rich ice soil property injecting paste material, with C 3s-C 2s- -CaO is essential mineral grog, gypsum, industrial tailings intergrinding make Binder Materials masterbatch, and then adding particle diameter is that the stirring that adds water of 6 ~ 10 μm of fine sands or CHARACTERISTICS OF TAILINGS SAND forms.
The method for making of masterbatch has two kinds, method 1: with C 3s-C 2s- -CaO is essential mineral grog 30 ~ 50%, gypsum 5 ~ 15% and industrial tailings 15 ~ 70%.Method 2: add CAS grog, OPC grog mixture, proportioning is: with C 3s-C 2s- -CaO is essential mineral grog 10 ~ 15%, CAS grog 15 ~ 25%, OPC grog 5 ~ 10%, gypsum 5 ~ 15% and industrial tailings 15 ~ 70%.
Fine sand type rich ice soil property injecting paste material is that 1 part of Binder Materials masterbatch adds 1 ~ 3 part of fine sand or CHARACTERISTICS OF TAILINGS SAND, and amount of water ensures that the ratio of mud is 0.8 ~ 1.2.
With C 3s-C 2s- -CaO is the method for making of essential mineral grog: at CaO-SiO 2-al 2o 3-Fe 2o 3-SO 3in the cement slurry of quinary system, excess introduces CaO, and the content of excessive oxidation calcium, between b-CaO=5 ~ 8%, controls in the scope of basicity factor Km=1.0 ~ 1.3, and under the firing temperature of 1200 DEG C ~ 1300 DEG C, grog is made in calcining.
Beneficial effect of the present invention is: fine sand type of the present invention rich ice soil property injecting paste material adopts with C 3s-C 2s- -CaO is that the configuration of essential mineral grog forms, and general control Mortar'S Flowability is at about 400mm, and composite earth layer intensity the change between grouting amount 3 ~ 20% and changed between 0.2 ~ 2.5Mpa between 30 ~ 60 minutes setting time.Be particularly suitable for sand content low use frozen soil layer fracture grouting, prevent soil layer from subsiding and reinforce pretreatment.
Detailed description of the invention
Below in conjunction with specific embodiment, explanation is further explained to the present invention.
Embodiment 1 is with C 3s-C 2s- -CaO is essential mineral grog 30%, gypsum 5% and industrial tailings 65% make gel rubber material masterbatch, and then adding particle diameter is that the stirring that adds water of 6 ~ 10 μm of fine sands or CHARACTERISTICS OF TAILINGS SAND forms.Raw material materials are: 1 part of Binder Materials masterbatch adds 1 part of fine sand or CHARACTERISTICS OF TAILINGS SAND, and amount of water ensures that the ratio of mud is 0.8.
With C 3s-C 2s- -CaO is the method for making of essential mineral grog: at CaO-SiO 2-al 2o 3-Fe 2o 3-SO 3in the cement slurry of quinary system, excess introduces CaO, and the content of excessive oxidation calcium, between b-CaO=5 ~ 8%, controls in the scope of basicity factor Km=1.0 ~ 1.3, and under the firing temperature of 1200 DEG C ~ 1300 DEG C, grog is made in calcining.
Embodiment 2 is with C 3s-C 2s- -CaO is essential mineral grog 10 ~ 15%, CAS grog 15 ~ 25%, OPC grog 5 ~ 10%, gypsum 5 ~ 15% and industrial tailings 15 ~ 70% make gel rubber material masterbatch, and then adding particle diameter is that the stirring that adds water of 6 ~ 10 μm of fine sands or CHARACTERISTICS OF TAILINGS SAND forms.Raw material materials are: 1 part of Binder Materials masterbatch adds 3 parts of fine sands or CHARACTERISTICS OF TAILINGS SAND, and amount of water ensures that the ratio of mud is 1.2.
With C 3s-C 2s- -CaO is the method for making of essential mineral grog: at CaO-SiO 2-al 2o 3-Fe 2o 3-SO 3in the cement slurry of quinary system, excess introduces CaO, and the content of excessive oxidation calcium, between b-CaO=5 ~ 8%, controls in the scope of basicity factor Km=1.0 ~ 1.3, and under the firing temperature of 1200 DEG C ~ 1300 DEG C, grog is made in calcining.
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.

Claims (2)

1. a fine sand type rich ice soil property injecting paste material, is characterized in that, with C 3s-C 2s- -CaO is essential mineral grog, gypsum, industrial tailings intergrinding make Binder Materials masterbatch, and then adding particle diameter is that the stirring that adds water of 6 ~ 10 μm of fine sands or CHARACTERISTICS OF TAILINGS SAND forms, with C 3s-C 2s- -CaO is essential mineral grog is at CaO-SiO 2-al 2o 3-Fe 2o 3-SO 3in the cement slurry of quinary system, excess introduces CaO, and the content of excessive oxidation calcium, between 5 ~ 8%, controls in basicity factor 1.0 ~ 1.3 scope, and under the firing temperature of 1200 DEG C ~ 1300 DEG C, grog is made in calcining; With C 3s-C2S- -CaO is essential mineral grog 30 ~ 50%, gypsum 5 ~ 15% and industrial tailings 15 ~ 70%; 1 part of Binder Materials masterbatch adds 1 ~ 3 part of fine sand or CHARACTERISTICS OF TAILINGS SAND; Amount of water ensures that the ratio of mud is 0.8 ~ 1.2; In Binder Materials masterbatch, each component percentage content sum is 100%.
2. a fine sand type rich ice soil property injecting paste material, is characterized in that, with C 3s-C 2s- -CaO is essential mineral grog, gypsum, industrial tailings intergrinding make Binder Materials masterbatch, and then adding particle diameter is that the stirring that adds water of 6 ~ 10 μm of fine sands or CHARACTERISTICS OF TAILINGS SAND forms, with C 3s-C 2s- -CaO is essential mineral grog is at CaO-SiO 2-al 2o 3-Fe 2o 3-SO 3in the cement slurry of quinary system, excess introduces CaO, and the content of excessive oxidation calcium, between 5 ~ 8%, controls in basicity factor 1.0 ~ 1.3 scope, and under the firing temperature of 1200 DEG C ~ 1300 DEG C, grog is made in calcining; Add CAS grog, OPC grog mixture, proportioning is: with C 3s-C2S- -CaO is essential mineral grog 10 ~ 15%, CAS grog 15 ~ 25%, OPC grog 5 ~ 10%, gypsum 5 ~ 15% and industrial tailings 15 ~ 70%; 1 part of Binder Materials masterbatch adds 1 ~ 3 part of fine sand or CHARACTERISTICS OF TAILINGS SAND; Amount of water ensures that the ratio of mud is 0.8 ~ 1.2; In Binder Materials masterbatch, each component percentage content sum is 100%.
CN201310333588.8A 2013-08-02 2013-08-02 Fine sand grouting material for ice-rich soil Expired - Fee Related CN103387370B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107619236B (en) * 2017-09-30 2019-07-12 山东大学 A kind of high-performance superfine cement based grouting material and its application for microfissure and powder fine sand soil grouting treatment
CN109139022B (en) * 2018-07-10 2019-12-20 新疆乌京铁建轨道交通有限公司 Construction method of fabricated lining tunnel capable of resisting active fault dislocation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054513A (en) * 2007-05-21 2007-10-17 中国石油大学(华东) Deep water low temperature cementing cement system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101054513A (en) * 2007-05-21 2007-10-17 中国石油大学(华东) Deep water low temperature cementing cement system

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