CN101152977A - Profundity sterilization borehole face high-strength high-performance concrete - Google Patents
Profundity sterilization borehole face high-strength high-performance concrete Download PDFInfo
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- CN101152977A CN101152977A CNA2006101072125A CN200610107212A CN101152977A CN 101152977 A CN101152977 A CN 101152977A CN A2006101072125 A CNA2006101072125 A CN A2006101072125A CN 200610107212 A CN200610107212 A CN 200610107212A CN 101152977 A CN101152977 A CN 101152977A
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- reducing agent
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/29—Frost-thaw resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a concrete with high strength and high performance for deeply and thickly frozen well wall. The double-doping technology of milled slag as the main mineral doping and different chemical doping is used; the invention is prepared after optimized combination and blending of mixture. The concrete is made by mixing P.0.42.5cement, machine-made sand, limestone rubble, milled rubble, I-level powder coal ash, TK-M intensifier, J851-D early strengthening high-early-strength water reducing agent, JQ-D anti-crack intensifying agent, high-efficiency water reducing agent of liquid polycarboxylic salt, and water. The present invention has the characteristics of the low preparation cost, the simple operation process, the applicability to engineering of the inside of a deeply and thickly frozen and a well wall on the outer layer and so on.
Description
Technical field:
The invention belongs to the deep water-borne sediments of mine vertical shaft freeze-wellboring concrete walling technical field.
Background technology:
Freeze-wellboring is the main special construction method that domestic and international vertical passes deep water-borne sediments.Domestic employing freezing method is built, is being built more than 500 in mine vertical shaft pit shaft, the maximum ga(u)ge that pit shaft passes the water-borne sediments before 2000 reaches 383m, along with increase to coal demand, the development of resources intensity that is imbedded in coal under the deep water-borne sediments increases gradually, and the thickness that at present new well passes the water-borne sediments has surpassed 500m.Along with the increase of depth of freezing degree, pressure of freezing wall, hydraulic pressure, press also and increase thereupon, concrete intensity of the borehole wall and performance have been proposed requirements at the higher level.Existing profundity sterilization borehole face high-strength concrete generally is to adopt to prepare based on the mineral additive of silica flour, is characterized in mixing in concrete the 8-10% silica flour, 2% naphthalene series high-efficiency water-reducing agent, P.0.52.5 or P.0.52.5R cement, natural high-quality river sand, high strength granite aggregate.Used material can make the mixed soil of doubting reach the high grade of C70-C80, but still has deficiency, and domestic silica flour output is little, and price is tens times of cement, silica flour place of cement cost height; Cement of high index, good-quality sand, stone, the difficulty of gathering materials on the spot very much, concrete build cost height; The viscosity of silicon powder concrete is big, the time lengthening of stirring, construction technology more complicated such as cast, tamping, surface are floating, maintenance.Use the early age strength of concrete of general method preparation low, the pressure of freezing wall that outer shaft wall bears is big, and the borehole wall crushes easily; The high consumption of concrete cement label of preparation is big, and hydration heat is up to 75-80 ℃, and frozen soil thawing scope is big, and the freezing wall reduced thickness influences sinking shaft safety; It is big that frozen soil melts scope, and secondary returns that to freeze pressure big, and outer shaft wall also suffers damage easily once more; The hydration heat height, the internal layer borehole wall is easy to generate thermal cracking, and the back borehole wall that thaws leaks.
Summary of the invention:
The object of the present invention is to provide that a kind of build cost is low, construction technology is simple, be fit to the deep profundity sterilization borehole face high-strength high-performance concrete that freezes the inside and outside layer of well borehole wall engineering characteristic.
Technical scheme of the present invention is the mineral additive and the two technology of mixing of different chemical admixtures that adopts based on ground slag, optimum combination mixes and stirs, respectively Pei Zhi profundity sterilization borehole face high-strength high-performance concrete, it is characterized in that making by following starting material components by weight, wherein:
The outer shaft wall tailored version is cement 380 P.0.42.5, machine-processed medium sand 580, limestone gravel 1090, ground slag 115, TK-M toughener 8.8, J851 early strength water-reducing agent 25, water 153;
Internal layer borehole wall tailored version is cement 380 P.0.42.5, machine-processed medium sand 580, limestone gravel 1120, ground slag 175, TK-M toughener 8.8, JQ anticracking densifying agent 55, water 152;
The inside and outside layer borehole wall share type and is cement 420 P.0.42.5, machine-processed medium sand 630, limestone gravel 1090, ground slag 115, I level flyash 65, liquid polycarboxylate high-efficiency water reducing agent 11, water 137.
In the concrete component, ground slag adopts specific surface area 〉=650m
2/ kg ground slag, I flyash are made gelling material equivalent replacement part cement, can reduce concrete hydration heat, improve concrete flowability, density, weather resistance; The TK-M toughener is the toughener of mineral additive, further excites the surfactivity of mineral additive, improves concrete workability, improves concrete strength; The J851 early strength water-reducing agent adopts J851-D type early strength water-reducing agent, has little swollen, strong, enhancement early; JQ anticracking densifying agent adopts JQ-D type anticracking densifying agent, has an amount of expansion, and the contraction of compensating concrete in process of setting effectively prevents the crack; The liquid polycarboxylate high-efficiency water reducing agent can increase substantially concrete strength and early strength, reduces slump-loss.
The profundity sterilization borehole face high-strength high-performance concrete of preparation, 3d, 7d, 28d intensity reach 60.2-60.6MPa, 66.1-77.6MPa, 87.8-93.2MPa respectively, and strength growth rate surpasses the maximum rate of growth of pressure of freezing wall, prevents that effectively outer shaft wall from being damaged by pressure; Hydration heat can reduce 15-20 ℃, effectively prevents internal layer borehole wall mass concrete temperature difference crack and shrinkage crack; The doubtful native intensity high-performance of mixing of general method preparation is good than adopting, and the integrated carrying ability and the water shutoff of the borehole wall are strong, but thickness of shaft wall attenuate 100-150mm, the minimizing pit shaft freezes, digs builds quantities, and speed of shaft sinking is fast, reduces investment outlay.
Profundity sterilization borehole face high-strength high-performance concrete provided by the invention, select common label cement for use, price is lower, the price of mechanism sand only is 1/3rd of a natural high-quality river sand price, common limestone gravel low price, the ground slag price is 1/tens of a silica flour price, flyash is 1/2nd of cement price, liquid polycarboxylate high-efficiency water reducing agent price is higher but consumption is little, other chemical admixture moderate costs, its cost is than the low 100 yuan/m of equality strength concrete of general method preparation
3More than.
Embodiment:
Embodiment 1
Establish concrete mixing plant at well head, forced mixer is installed, press each composition weight of concrete raw material and measure: P.0.42.5 cement 380kg, machine-processed medium sand 580kg, limestone gravel 1120kg, ground slag 180kg, TK-M toughener 8.8kg, J851-D type early strength water-reducing agent 25kg, water 153kg.The solid raw material hopper of packing into, promote hopper and drop in the stirrer, in stirrer, add entry and stir, churning time 〉=90s puts into the concrete that stirs in the bottom discharge bucket, goes into the well and builds use.The concrete of being prepared is the early strong high performance concrete of outer shaft wall tailored version C70 low hydration heat, and the slump is 190mm, and its 3d, 7d, 28d ultimate compression strength reach 60.2MPa, 66.1MPa, 87.8MPa respectively, and hydration heat is the highest 59.5 ℃.Low hydration heat, early strength height can prevent effectively that outer shaft wall from being damaged by pressure.
Establish concrete mixing plant at well head, forced mixer is installed, press each composition weight of concrete raw material and measure: P.0.42.5 cement 380kg, machine-processed medium sand 580kg, limestone gravel 1120kg, ground slag 175kg, TK-M toughener 8.8kg, JQ-D type anticracking densifying agent 55kg, water 152kg.The solid raw material hopper of packing into, promote hopper and drop in the stirrer, in stirrer, add entry and stir, churning time 〉=90s puts into the concrete that stirs in the bottom discharge bucket, goes into the well and builds use.The concrete of being prepared is the closely knit high performance concrete of internal layer borehole wall tailored version C70 low hydration heat anticracking, slump 180mm, and its 3d, 7d, 28d ultimate compression strength reach 60.6MPa, 71.6MPa, 86.0MPa respectively, and hydration heat is the highest 59.1 ℃.Low hydration heat effectively prevents internal layer borehole wall mass concrete temperature difference crack and shrinkage crack.
Establish concrete mixing plant at well head, forced mixer is installed, press each composition weight of concrete raw material and measure: P.0.42.5 cement 370kg, machine-processed medium sand 600kg, limestone gravel 1130kg, ground slag 115kg, I level flyash 65kg, the efficient composite water-reducing agent 11kg of liquid polycarboxylate, water 137kg.The solid material hopper of packing into, promote hopper and drop in the stirrer, in stirrer, add entry and the efficient composite water-reducing agent of liquid polycarboxylate, starting stirrer stirs, churning time 〉=90s puts into the concrete that stirs in the bottom discharge bucket, goes into the well and builds use.The concrete of being prepared is the early strong closely knit high performance concrete of anticracking of C80 low hydration heat that the inside and outside layer borehole wall share type, can be used for the internal layer borehole wall and also can be used for outer shaft wall, slump 170mm, its 3d, 7d, 28d ultimate compression strength reach 61.6MPa, 77.6MPa, 93.2MPa respectively, and hydration heat is the highest 61.0 ℃.Low hydration heat, early strength height, anticracking are closely knit, can prevent effectively that outer shaft wall from being damaged by pressure and internal layer borehole wall crack.
Claims (2)
1. profundity sterilization borehole face high-strength high-performance concrete, employing is based on the mineral additive and the two technology of mixing of different chemical admixtures of ground slag, optimum combination, mix and stir, the preparation profundity sterilization borehole face high-strength high-performance concrete, it is characterized in that making by following starting material components by weight, wherein:
The outer shaft wall tailored version is cement 380 P.0.42.5, machine-processed medium sand 580, limestone gravel 1090, ground slag 115, TK-M toughener 8.8, J851 early strength water-reducing agent 25, water 153;
Internal layer borehole wall tailored version is cement 380 P.0.42.5, machine-processed medium sand 580, limestone gravel 1120, ground slag 175, TK-M toughener 8.8, JQ anticracking densifying agent 55, water 152;
The inside and outside layer borehole wall share type and is cement 420 P.0.42.5, machine-processed medium sand 630, limestone gravel 1090, ground slag 115, I level flyash 65, liquid polycarboxylate high-efficiency water reducing agent.
2. profundity sterilization borehole face high-strength high-performance concrete according to claim 1 is characterized in that described ground slag specific surface area 〉=650m
2/ kg, J851 early strength water-reducing agent adopt J851-D type early strength water-reducing agent, and JQ anticracking densifying agent adopts JQ-D type anticracking densifying agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101072125A CN100572323C (en) | 2006-09-27 | 2006-09-27 | Profundity sterilization borehole face high-strength high-performance concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101072125A CN100572323C (en) | 2006-09-27 | 2006-09-27 | Profundity sterilization borehole face high-strength high-performance concrete |
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| Publication Number | Publication Date |
|---|---|
| CN101152977A true CN101152977A (en) | 2008-04-02 |
| CN100572323C CN100572323C (en) | 2009-12-23 |
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| CNB2006101072125A Expired - Fee Related CN100572323C (en) | 2006-09-27 | 2006-09-27 | Profundity sterilization borehole face high-strength high-performance concrete |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491700A (en) * | 2011-12-15 | 2012-06-13 | 上海城建物资有限公司 | Freezing process construction completing high-performance constant negative temperature concrete |
| CN102503191A (en) * | 2011-10-19 | 2012-06-20 | 西南科技大学 | Activated basalt powder used as cement admixture and preparation method thereof |
| CN103132652A (en) * | 2013-01-15 | 2013-06-05 | 盐城工学院 | Prefabricating embedded spiral hopped column formwork core cast-in-place concrete column of and manufacturing method |
| CN104341130A (en) * | 2013-08-01 | 2015-02-11 | 新疆西部建设股份有限公司 | A producing method for producing concrete from mine waste ore and a producing system |
| CN104446258A (en) * | 2014-11-25 | 2015-03-25 | 安徽恒源煤电股份有限公司 | High-strength and high-performance concrete for deep frozen well wall and preparation method thereof |
| CN107285704A (en) * | 2017-08-03 | 2017-10-24 | 天津港航工程有限公司 | A kind of high strength micro expansion grouting material of cement base |
| CN112412015A (en) * | 2020-12-03 | 2021-02-26 | 四川省第六建筑有限公司 | Formwork-supporting-free system construction method for irregular concrete gutter |
| CN112919867A (en) * | 2021-03-24 | 2021-06-08 | 北京中煤矿山工程有限公司 | Anti-cracking frozen borehole wall concrete and preparation method thereof |
| CN116553870A (en) * | 2023-05-04 | 2023-08-08 | 江苏晨马建筑科技有限公司 | Environment-friendly concrete formula for prefabricated rainwater and sewage well and preparation method of environment-friendly concrete formula |
-
2006
- 2006-09-27 CN CNB2006101072125A patent/CN100572323C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503191A (en) * | 2011-10-19 | 2012-06-20 | 西南科技大学 | Activated basalt powder used as cement admixture and preparation method thereof |
| CN102491700A (en) * | 2011-12-15 | 2012-06-13 | 上海城建物资有限公司 | Freezing process construction completing high-performance constant negative temperature concrete |
| CN102491700B (en) * | 2011-12-15 | 2013-06-12 | 上海城建物资有限公司 | Freezing process construction completing high-performance constant negative temperature concrete |
| CN103132652A (en) * | 2013-01-15 | 2013-06-05 | 盐城工学院 | Prefabricating embedded spiral hopped column formwork core cast-in-place concrete column of and manufacturing method |
| CN104341130A (en) * | 2013-08-01 | 2015-02-11 | 新疆西部建设股份有限公司 | A producing method for producing concrete from mine waste ore and a producing system |
| CN104341130B (en) * | 2013-08-01 | 2016-05-25 | 新疆西部建设股份有限公司 | One is utilized the concrete production method of chats system and production system |
| CN104446258A (en) * | 2014-11-25 | 2015-03-25 | 安徽恒源煤电股份有限公司 | High-strength and high-performance concrete for deep frozen well wall and preparation method thereof |
| CN107285704A (en) * | 2017-08-03 | 2017-10-24 | 天津港航工程有限公司 | A kind of high strength micro expansion grouting material of cement base |
| CN112412015A (en) * | 2020-12-03 | 2021-02-26 | 四川省第六建筑有限公司 | Formwork-supporting-free system construction method for irregular concrete gutter |
| CN112919867A (en) * | 2021-03-24 | 2021-06-08 | 北京中煤矿山工程有限公司 | Anti-cracking frozen borehole wall concrete and preparation method thereof |
| WO2022199171A1 (en) * | 2021-03-24 | 2022-09-29 | 北京中煤矿山工程有限公司 | Anti-crack concrete for frozen well walls and preparation method therefor |
| CN116553870A (en) * | 2023-05-04 | 2023-08-08 | 江苏晨马建筑科技有限公司 | Environment-friendly concrete formula for prefabricated rainwater and sewage well and preparation method of environment-friendly concrete formula |
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| Publication number | Publication date |
|---|---|
| CN100572323C (en) | 2009-12-23 |
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Granted publication date: 20091223 Termination date: 20100927 |