CN103086672B - A kind of wet shotcreting and production method thereof - Google Patents
A kind of wet shotcreting and production method thereof Download PDFInfo
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- CN103086672B CN103086672B CN201310052547.1A CN201310052547A CN103086672B CN 103086672 B CN103086672 B CN 103086672B CN 201310052547 A CN201310052547 A CN 201310052547A CN 103086672 B CN103086672 B CN 103086672B
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Abstract
Wet shotcreting and production method thereof, belong to the concrete of subterranean tunnel and the use of side slope bolting and shotcreting, and its production method.The raw material that it comprises has: silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, nano material 35 ~ 45, silica flour, steel fiber etc., is prepared into different types of wet shotcreting by filling a prescription and feeding intake.The beneficial effect that the present invention has is: it can be high with country rock cohesive strength, improves concrete jet thickness, and gain in strength is rapid, improves concrete toughness and antidetonation explosion-proof performance.
Description
Technical field:
Wet shotcreting and production method thereof, belong to the concrete of subterranean tunnel and the use of side slope bolting and shotcreting, and its production method.
Background technology:
In power station, subterranean tunnel and side slope bolting and shotcreting engineering, often there is diversion tunnel overlength, cavern's section is huge, geologic condition is severe, water burst is dashed forward in underground, the Main Engineering Geological Problems such as high stress rock burst and fault belt.Particularly diversion tunnel is comparatively large due to buried depth, often rock burst occurs near tunnel face.Prior art adopts normal concrete to spray, and Problems existing is that concrete and country rock cohesive strength are not high, and one time jetting thickness is thinner, and gain in strength is slower.Simultaneously because construction speed needs, tunnel face is blown out for 12 ~ 16 hours after last cyclic spray concrete, concrete often occurs by the phenomenon of shock collapse.For the water abundant ground run in excavation, common wet shotcreting is difficult to spray, and can not be guaranteed with the bonding situation of country rock, and jet thickness is also very undesirable, the phenomenon dropped immediately after often spraying.For above all special geologic conditions, common sprayed concrete is adopted to be difficult to meet the requirement of construction speed, secure context.
Summary of the invention:
The problem to be solved in the present invention is exactly provide a kind of high with country rock cohesive strength for above deficiency, and improve concrete jet thickness, gain in strength is rapid, improves the wet shotcreting of concrete toughness, antidetonation explosion-proof performance, and its production method.Its technical scheme is as follows:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, nano material 35 ~ 45, form nanometer wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, nano material 35 ~ 45 parts are added water 180 ~ 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand and the stirring of rice stone, then nano material is dropped into together with silicate cement stirrer stirring.Nano material is fed intake together with silicate cement, the degree of scatter that super-thin mineral power reaches maximum in concrete production can be made; The gelling material such as cement should not feed intake at first, to reduce sticky tank.
Or a wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, nano material 35 ~ 45, steel fiber 25 ~ 40.Form nanometer steel fiber wet-shot concrete.
The production method of above-mentioned wet shotcreting:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, nano material 35 ~ 45 parts, steel fiber 25 ~ 40 parts are added water 180 ~ 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then nano material is dropped into together with silicate cement stirrer stirring.Fiber-like material feeds intake together with the aggregate of coarse grain footpath, so that fiber is dispersed; Nano material is fed intake together with silicate cement, the degree of scatter that super-thin mineral power reaches maximum in concrete production can be made; The gelling material such as cement should not feed intake at first, to reduce sticky tank.
Or a wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, nano material 35 ~ 45, toughening type polypropylene synthesis robust fibre 6 ~ 10.Form nanometer toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, nano material 35 ~ 45 parts, toughening type polypropylene synthesis robust fibre 6 ~ 10 parts are added water 180 ~ 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then nano material is dropped into together with silicate cement stirrer stirring.Fiber-like material feeds intake together with the aggregate of coarse grain footpath, so that fiber is dispersed; Nano material is fed intake together with silicate cement, the degree of scatter that super-thin mineral power reaches maximum in concrete production can be made; The gelling material such as cement should not feed intake at first, to reduce sticky tank;
Or a wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, silica flour 45 ~ 55, steel fiber 25 ~ 40, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 ~ 5.1, form steel fiber reinforced siliceous concrete wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, silica flour 45 ~ 55 parts, steel fiber 25 ~ 40 parts, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 ~ 5.1 parts are added water 180 ~ 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.Fiber-like material feeds intake together with the aggregate of coarse grain footpath, so that fiber is dispersed; Silica flour is fed intake together with silicate cement, the degree of scatter that super-thin mineral power reaches maximum in concrete production can be made; The gelling material such as cement should not feed intake at first, to reduce sticky tank;
Or a wet shotcreting, its gordian technique is the raw material comprising following weight part:
The synthesis of silicate cement 410 ~ 430, rice stone 650 ~ 690, artificial sand 900 ~ 1100, silica flour 45 ~ 55, toughening type polypropylene robust fibre 6 ~ 10, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 ~ 5.1, form silica flour toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, silica flour 45 ~ 55 parts, toughening type polypropylene synthesis robust fibre 6 ~ 10 parts, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 ~ 5.1 parts are added water 180 ~ 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.Fiber-like material feeds intake together with the aggregate of coarse grain footpath, so that fiber is dispersed; Silica flour is fed intake together with silicate cement, the degree of scatter that super-thin mineral power reaches maximum in concrete production can be made; The gelling material such as cement should not feed intake at first, to reduce sticky tank.
Compared with prior art, the beneficial effect that the present invention has is:
After these materials of product admixture inorganic nano material of the present invention, steel fiber, silica flour or toughening type polypropylene synthesis robust fibre, concrete jet thickness can be improved, having an initial stage rises strong fast, gain in strength is rapid, later strength is high, anti-permeability performance is good, the advantage that cohesive strength is high, concrete toughness and antidetonation explosion-proof performance can be improved, the concrete early anti-cracking behavior energy of effective raising, for system anchor bolt supporting provides engineering time and construction safety guarantee, meet complex geological condition cavern con struction needs, construct more economically, save time, facilitate.Product of the present invention can also suppress Plastic Shrinkage of Concrete and desciccation crack, improve agent on crack resistance of concrete freeze thawing ability, fatigue resistance, wear-resistant, shatter-resistant, shock resistance, bending resistance strengthen and assist enhancement function, concrete support performance and bond performance can be improved, improve concrete weather resistance, and can play pumping easily, not easily abrasion pipeline, the effect that reduces resilience, to reduce costs etc.
Product nanometer wet shotcreting of the present invention is mainly used in rock crusher band and landslide and speedily carries out rescue work location.Steel fiber reinforced siliceous concrete wet shotcreting mainly concentrates on rock burst, infiltration and broken hole section, and the tunnel face to carry out for meeting excavation progress needs just sprays, it is a kind of advanced effective means in the preliminary bracing of the rock burst in the construction of reply large-span underground chamber, infiltration hole section.Nanometer toughening type wet shotcreting is mainly used in TBM hole section rock and rock burst, infiltration and broken hole section.Several concrete also can optionally combinationally use.
Raw materials of the present invention is following material:
Nano material:
Nano material of the present invention is that one reaches nano level concrete admixture through abundant grinding, material granule diameter, and its collects diminishing, enhancing, urgees to be condensated as a whole, and major ingredient is silicon-dioxide, is a kind of nontoxic, harmless, tasteless, free of contamination inorganic materials.After mixing this material in shotcrete, can increase a jet thickness, and rebound degree reduces greatly, dust is little, having an initial stage rises strong fast, the advantages such as later strength is high, and anti-permeability performance is good, and cohesive strength is high, weather resistance is strong.HTC's nano material that product of the present invention selects Chengdu HTC to produce and the leap 2000 type nano material that Gongyi, Henan produces.
Steel fiber:
The water-soluble Jia Mikesi steel fiber of row's shape that product of the present invention selects Shanghai shellfish Hans Kalt-two steel company limited to produce, this fiber have in concrete be uniformly dispersed, the feature such as not conglomeration, easily stirring.
Toughening type polypropylene synthesis robust fibre (organic imitation steel fiber):
Toughening type polypropylene synthesis robust fibre is a kind of novel enhanced, toughening material, has: light weight, corrosion-resistant, be easy to dispersed, bond stress is strong, improve concrete toughness, antidetonation explosion-proof performance, effectively improve concrete early anti-cracking behavior energy.Shenzhen dimension gram organic imitation steel fiber that product of the present invention selects Shenzhen Wei Ke company limited to produce.
Silica flour:
Silica flour is when smelting ferrosilicon or industrial silicon, the dust that the silicon vapor of being discharged by flue is collected through dust arrester installation and obtained.The particle of silica flour is superfine, and main component is silicon-dioxide.Silica flour is mixed in sprayed concrete, because silicon powder particle is filled in sprayed concrete, make silica flour sprayed concrete quite closely knit, bleeding and the cohesiveness of fresh concrete can be improved, increase concrete intensity, improve concrete impervious, the performance such as resistant abrasion, anti-cavitation corrosion simultaneously.Therefore silica flour is a kind of well adulterant, is widely used in concrete.Product of the present invention is selected Chengdu dust to agree SILICA FUME to carry out.
In order to verify beneficial effect of the present invention, special list is described:
The each wet shotcreting design objective of table 1
Wet shotcreting is tested:
Consider feature and the practical situation of working-yard sprayed concrete, test in place is selected " be holder " normal silicate P.042.5R cement, Chengdu dust agree SILICA FUME, the JG-2H efficient retarding and water reducing agent that Beijing Ye Jian company limited produces, Gongyi, Henan nanometer admixture and Chengdu HTC nanometer admixture, the dimension gram imitative steel fiber that Shenzhen Wei Ke company limited produces, the Jia Mikesi steel fiber that Shanghai shellfish Hans Kalt-two steel company limited produces carries out situ wet shotcrete mix service check.
Table 2 on-spot injection concrete performance test result
Table 3 supplementary test on-spot injection concrete performance test result
Table 4 sprayed concrete fieldtesting results
As can be seen from table 2-4:
1, nanometer wet shotcreting and country rock cohesive strength (employing split the law) are 1.92MPa, meet the design requirements of II class surrounding rock >=1.2MPa; 28d ultimate compression strength is 46.1MPa, and tensile strength is 3.16MPa, all meets design requirement.
2, nanometer toughening type wet shotcreting and country rock cohesive strength (employing split the law) are 1.60MPa, meet the design requirements of II class surrounding rock>=1.2MPa; Bending toughness index I
5be 3.84, meet the design requirements of>=3; 28d ultimate compression strength is 43.4MPa, and tensile strength is 3.25MPa, and folding strength is 10.0MPa, seepage-resistant grade>=W8, and Young's modulus is 3.41 × 10
4mPa, all meets design requirement.
3, nanometer steel fiber wet-shot concrete (volume content of steel fibers 40 parts) and country rock cohesive strength (employing split the law) are 1.55MPa, meet the design requirements of II class surrounding rock >=1.2MPa; 28d ultimate compression strength is 44.7MPa, and tensile strength is 4.27MPa, all meets design requirement.
4, nanometer steel fiber wet-shot concrete (volume content of steel fibers 35 parts) and country rock cohesive strength (employing split the law) are 1.56MPa, meet the design requirements of II class surrounding rock>=1.2MPa; 28d ultimate compression strength is 46.3MPa, and tensile strength is 3.56MPa, and folding strength is 8.17MPa, seepage-resistant grade>=W9, and Young's modulus is 3.12 × 10
4mPa all meets design requirement.
5, silica flour toughening type wet shotcreting and country rock cohesive strength are 1.45MPa, meet the design requirements of II class surrounding rock>=1.2MPa; 28d ultimate compression strength is 34.7MPa, and tensile strength is 2.30MPa, and folding strength is 8.40MPa, seepage-resistant grade>=W9, and Young's modulus is 2.38 × 10
4mPa, all meets design requirement.
6, steel fiber reinforced siliceous concrete wet shotcreting (volume content of steel fibers 40 parts) and country rock cohesive strength are 1.84MPa, meet the design requirements of II class surrounding rock >=1.2MPa; 28d ultimate compression strength is 49.4MPa, and tensile strength is 4.19MPa, all meets design requirement.
7, steel fiber reinforced siliceous concrete wet shotcreting (volume content of steel fibers 35 parts) and country rock cohesive strength are 1.92MPa, meet the design requirements of II class surrounding rock >=1.2MPa; 28d ultimate compression strength is 31.4MPa, and tensile strength is 2.27MPa, meets design requirement.
8, in on-spot injection test, mix inorganic nano material wet shotcreting rebound degree between 8.9% ~ 10.6%, be better than abutment wall in " water power hydro project construction of anchor shotcreting specification " (DL/T5181-2003) and should not be greater than 15%, crown should not be greater than the requirement of 25%.
9, mix inorganic nano material wet shotcreting performance and be better than mixing silica sprayed concrete generally, this with mix inorganic nano material wet shotcreting compaction rate and Fiber Distribution homogeneity is better relevant.
Can find out that the feature of product of the present invention is as table 5 thus:
Table 5 products characteristics of the present invention
Embodiment:
Embodiment one:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410, rice stone 690, artificial sand 900, nano material 45, form nanometer wet shotcreting.
The production method of above-mentioned wet shotcreting:
690 parts, silicate cement 410 part, meter stone, artificial sand 900 parts, nano material 45 parts are added water 180 parts and mix and stir, when mixing and stirring, in stirrer, first adds artificial sand and the stirring of rice stone, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment two:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 430, rice stone 650, artificial sand 1100, nano material 35, form nanometer wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 parts, silicate cement 430 part, meter stone, artificial sand 1100 parts, nano material 35 parts are added water 220 parts and mix and stir, when mixing and stirring, in stirrer, first adds artificial sand and the stirring of rice stone, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment three:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 420, rice stone 670, artificial sand 1000, nano material 40, form nanometer wet shotcreting.
The production method of above-mentioned wet shotcreting:
670 parts, silicate cement 420 part, meter stone, artificial sand 1000 parts, nano material 40 parts are added water 200 parts and mix and stir, when mixing and stirring, in stirrer, first adds artificial sand and the stirring of rice stone, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment four:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410, rice stone 690, artificial sand 900, nano material 45, steel fiber 25.Form nanometer steel fiber wet-shot concrete.
The production method of above-mentioned wet shotcreting:
690 parts, silicate cement 410 part, meter stone, artificial sand 900 parts, nano material 45 parts, steel fiber 25 parts are added water 180 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment five:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 430, rice stone 650, artificial sand 1100, nano material 35, steel fiber 40.Form nanometer steel fiber wet-shot concrete.
The production method of above-mentioned wet shotcreting:
650 parts, silicate cement 430 part, meter stone, artificial sand 1100 parts, nano material 35 parts, steel fiber 40 parts are added water 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment six:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 420, rice stone 670, artificial sand 1000, nano material 40, steel fiber 33.Form nanometer steel fiber wet-shot concrete.
The production method of above-mentioned wet shotcreting:
670 parts, silicate cement 420 part, meter stone, artificial sand 1000 parts, nano material 40 parts, steel fiber 33 parts are added water 200 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment seven:
A kind of wet shotcreting, is characterized in that the raw material comprising following weight part:
Silicate cement 410, rice stone 690, artificial sand 900, nano material 45, toughening type polypropylene synthesis robust fibre 6.Form nanometer toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
690 parts, silicate cement 410 part, meter stone, artificial sand 900 parts, nano material 45 parts, toughening type polypropylene synthesis robust fibre 6 parts are added water 180 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment eight:
A kind of wet shotcreting, is characterized in that the raw material comprising following weight part:
Silicate cement 430, rice stone 650, artificial sand 1100, nano material 35, toughening type polypropylene synthesis robust fibre 10.Form nanometer toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 parts, silicate cement 430 part, meter stone, artificial sand 1100 parts, nano material 35 parts, toughening type polypropylene synthesis robust fibre 10 parts are added water 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment nine:
A kind of wet shotcreting, is characterized in that the raw material comprising following weight part:
Silicate cement 420, rice stone 670, artificial sand 1000, nano material 40, toughening type polypropylene synthesis robust fibre 8.Form nanometer toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
670 parts, silicate cement 420 part, meter stone, artificial sand 1000 parts, nano material 40 parts, toughening type polypropylene synthesis robust fibre 8 parts are added water 200 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then nano material is dropped into together with silicate cement stirrer stirring.
Embodiment ten:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 410, rice stone 690, artificial sand 900, silica flour 55, steel fiber 25, high-efficiency water-reducing agent of poly-carboxylic acid 5.1, form steel fiber reinforced siliceous concrete wet shotcreting.
The production method of above-mentioned wet shotcreting:
690 parts, silicate cement 410 part, meter stone, artificial sand 900 parts, silica flour 55 parts, steel fiber 25 parts, high-efficiency water-reducing agent of poly-carboxylic acid 5.1 parts are added water 180 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Embodiment 11:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 430, rice stone 650, artificial sand 1100, silica flour 45, steel fiber 40, high-efficiency water-reducing agent of poly-carboxylic acid 4.9, form steel fiber reinforced siliceous concrete wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 parts, silicate cement 430 part, meter stone, artificial sand 1100 parts, silica flour 45 parts, steel fiber 40 parts, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 parts are added water 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Embodiment 12:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
Silicate cement 420, rice stone 670, artificial sand 1000, silica flour 50, steel fiber 33, high-efficiency water-reducing agent of poly-carboxylic acid 5, form steel fiber reinforced siliceous concrete wet shotcreting.
The production method of above-mentioned wet shotcreting:
670 parts, silicate cement 420 part, meter stone, artificial sand 1000 parts, silica flour 50 parts, steel fiber 33 parts, high-efficiency water-reducing agent of poly-carboxylic acid 5 parts are added water 200 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Embodiment 13:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
The synthesis of silicate cement 410, rice stone 690, artificial sand 900, silica flour 55, toughening type polypropylene robust fibre 6, high-efficiency water-reducing agent of poly-carboxylic acid 5.1, form silica flour toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
690 parts, silicate cement 410 part, meter stone, artificial sand 900 parts, silica flour 55 parts, toughening type polypropylene synthesis robust fibre 6 parts, high-efficiency water-reducing agent of poly-carboxylic acid 5.1 parts are added water 180 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Embodiment 14:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
The synthesis of silicate cement 430, rice stone 650, artificial sand 1100, silica flour 45, toughening type polypropylene robust fibre 10, high-efficiency water-reducing agent of poly-carboxylic acid 4.9, form silica flour toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
650 parts, silicate cement 430 part, meter stone, artificial sand 1100 parts, silica flour 45 parts, toughening type polypropylene synthesis robust fibre 10 parts, high-efficiency water-reducing agent of poly-carboxylic acid 4.9 parts are added water 220 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Embodiment 15:
A kind of wet shotcreting, its gordian technique is the raw material comprising following weight part:
The synthesis of silicate cement 420, rice stone 670, artificial sand 1000, silica flour 50, toughening type polypropylene robust fibre 8, high-efficiency water-reducing agent of poly-carboxylic acid 5, form silica flour toughening type wet shotcreting.
The production method of above-mentioned wet shotcreting:
670 parts, silicate cement 420 part, meter stone, artificial sand 1000 parts, silica flour 50 parts, toughening type polypropylene synthesis robust fibre 8 parts, high-efficiency water-reducing agent of poly-carboxylic acid 5 parts are added water 200 parts and mix and stir, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then silica flour, silicate cement, high-efficiency water-reducing agent of poly-carboxylic acid are dropped into together stirrer stirring.
Claims (2)
1. a production method for wet shotcreting, is characterized in that:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, nano material 35 ~ 45 parts, steel fiber 25 ~ 40 parts are mixed and stirred, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, steel fiber stirring, then nano material is dropped into together with silicate cement stirrer stirring.
2. a production method for wet shotcreting, is characterized in that:
650 ~ 690 parts, silicate cement 410 ~ 430 part, meter stone, artificial sand 900 ~ 1100 parts, nano material 35 ~ 45 parts, toughening type polypropylene synthesis robust fibre 6 ~ 10 parts are mixed and stirred, when mixing and stirring, in stirrer, first add artificial sand, meter Shi, the stirring of toughening type polypropylene synthesis robust fibre, then nano material is dropped into together with silicate cement stirrer stirring.
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| CN115677295B (en) * | 2022-11-09 | 2023-10-31 | 中铁第四勘察设计院集团有限公司 | Shotcrete for submarine tunnel and preparation method and application thereof |
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|---|---|---|---|---|
| CN101265058A (en) * | 2008-04-17 | 2008-09-17 | 中铁二局股份有限公司 | Injection concrete |
| CN101792289A (en) * | 2010-02-26 | 2010-08-04 | 中国第一冶金建设有限责任公司 | Rice stone concrete |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265058A (en) * | 2008-04-17 | 2008-09-17 | 中铁二局股份有限公司 | Injection concrete |
| CN101792289A (en) * | 2010-02-26 | 2010-08-04 | 中国第一冶金建设有限责任公司 | Rice stone concrete |
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