CN102153325A - Medium-strength-grade high-performance concrete using volcanic ash as admixture - Google Patents
Medium-strength-grade high-performance concrete using volcanic ash as admixture Download PDFInfo
- Publication number
- CN102153325A CN102153325A CN2011101054611A CN201110105461A CN102153325A CN 102153325 A CN102153325 A CN 102153325A CN 2011101054611 A CN2011101054611 A CN 2011101054611A CN 201110105461 A CN201110105461 A CN 201110105461A CN 102153325 A CN102153325 A CN 102153325A
- Authority
- CN
- China
- Prior art keywords
- concrete
- volcanic ash
- performance
- strength
- admixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- 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 invention relates to a medium-strength-grade high-performance concrete using volcanic ash as an admixture. The workability and durability of the concrete can meet the index requirements for high-performance concrete. In every cubic meter of the concrete, the cementing material weighs 320-380kg. The cementing material comprises the following components in percentage by weight: 65-68% of cement, 30% of volcanic ash and 2-5% of siliceous dust. When preparing the concrete, a polycarboxylic-acid high-efficiency water reducing agent, which accounts for 0.8-1.0% by weight of the cementing material, is added. The workability and durability of the concrete can meet the index requirements for high-performance concrete, and can completely satisfy the requirement of slump for pump concrete, thereby providing an effective technical way for preparation of project-site maximum-size medium-strength-grade concrete by using volcanic ash as an admixture as well as development and utilization of volcanic ash.
Description
Technical field
The present invention relates to concrete, particularly a kind of medium tenacity grade high-performance volcanic ash blending concrete.
Background technology
At present, China uses concrete admixture widely to mainly contain slag powders, flyash, zeolite and the SILICA FUME used in high-strength concrete etc.And volcanic ash is (by basalt, tuff, volcanoclastic rock, the zeolite rock, the float stone rock, artificial levigate the forming of volcanics such as diatomite) as a kind of typical volcano grey matter mineral micro powder, the resource distribution of having verified and having been developed at present is in Yunnan Province of China, Guangdong, Jilin, Heilungkiang, ground such as Hainan, but because of concentrating relatively and remote the distribution region, the pozzuolanic natural quality in various places is different, therefore do not make the general use technology rules of volcanic ash adulterant as yet, as " railway concrete structure durability design temporary provisions " and " GB/T18736 mineral admixture for high-strength high-performance concrete " etc.Along with carrying forward vigorously of above-mentioned regional capital construction paces, the region material that concrete admixture need be sought to suit, the research and development of natural volcanic ash blending concrete obtain paying attention at this point.
Yet the workability and the weather resistance of volcanic ash blending concrete are unsatisfactory." short coagulate " phenomenon in the mix process makes the initial slump of concrete mix and loss of slump very big, is difficult to reach the workability requirement of pump concrete, and bleeding, laitance phenomenon are serious; On the other hand, its weather resistance is weaker than flyash and slag admixture concrete far away, can't satisfy the high-durability requirement of current specifications to concrete material.
The silicon ash is as a kind of known high-activity mineral blending material, but restricted the widespread use of silicon ash because of it costs an arm and a leg, and only is used for high-strength concrete and super high strength concrete usually, and volume is between 5%～10%.Particle that the silicon ash is superfine and high pozzolanic activity improve concrete disintegration and excreting water phenomenon to improving concrete strength, increasing compactness, and it is remarkable to improve effects such as concrete impermeability, resistance to chemical corrosion.
Summary of the invention
Technical problem to be solved by this invention provides a kind of medium tenacity grade high-performance volcanic ash blending concrete, and its workability and weather resistance all can reach the index request of high performance concrete.
The technical solution adopted for the present invention to solve the technical problems is as follows:
Medium tenacity grade high-performance volcanic ash blending concrete of the present invention, it is characterized in that: this concrete is 320～380kg by every cubic metre of binder total amount, gelling material contains cement 65～68%, volcanic ash 30%, silicon ash 2～5% by weight percentage, adds polycarboxylic acid series high efficiency water reducing agent by 0.8～1.0% of gelling material weight during the concrete preparation.
The invention has the beneficial effects as follows, its workability and weather resistance all can reach the index request of high performance concrete, can satisfy the slump requirement of pump concrete fully, use the medium tenacity grade concrete and the pozzuolanic development and use of scale of construction maximum that the otherwise effective technique approach is provided for adopting volcanic ash adulterant preparation engineering site.
Embodiment
The present invention is further described below in conjunction with embodiment.
Medium tenacity grade high-performance volcanic ash blending concrete of the present invention, by every cubic metre of binder total amount is 320～380kg, gelling material contains cement 65～68%, volcanic ash 30%, silicon ash 2～5% by weight percentage, adds polycarboxylic acid series high efficiency water reducing agent by 0.8～1.0% of gelling material weight during the concrete preparation.Described pozzuolanic activity index is not less than 62%, 80 μ m square hole sieve and tails over 5～7%.Strict control folk prescription water consumption and water-cement ratio, the folk prescription water consumption is no more than 160kg, and water-cement ratio is not more than 0.5.
Test shows, the problem that too high volcanic ash volume can bring undercapacity and alkali content to exceed standard, and to the blending concrete of medium tenacity grade, should not be greater than 30%.The adding of little volume silicon ash has remedied the active defect of insufficient of natural volcanic ash, has improved concrete strength; On the other hand, tiny particulate hydrate has been clogged the microvoid in the concrete microstructure, has improved concrete density, has strengthened the ability of concrete impervious and resist chemical.And little milliosmolarity silicon ash is little to the increase of folk prescription concrete cost, and cost performance is higher.The folk prescription water consumption to the durability index influence significantly should strict control.For trass concrete, the effect of polycarboxylic acid series high efficiency water reducing agent is better than naphthalene water reducer greatly, can satisfy the slump requirement of pump concrete fully, and the guarantor is collapsed respond well.
The starting material service condition is as follows in the following enforcement: cement is selected P.042.5 ordinary Portland cement of stone forest board that Yunnan three river mud company limiteds produce for use; The board volcanic ash is risen in the river that volcanic ash selects for use river, Longling County, Yunnan Province to rise volcanic ash development corporation, Ltd. product, and activity index is that 0.66,80 μ m square hole sieve tails over 6.1%; 90 grades of silicon ashes that the silicon ash adopts Yunnan Yongchang Lead ﹠ Zinc Co., Ltd. to produce, specific surface area 22.8m
2/ g, activity index 94%; The PCA board High Efficient Diswater that water reducer selects for use Jiangsu Botexin Materials Co., Ltd to produce; Coarse aggregate is selected green stone rock field, the Baoshan, Yunnan 5～31.5mm limestone gravel for use; Fine aggregate selects for use green stone rock field, the Baoshan, Yunnan, the Baoshan, Yunnan to produce machine-processed sand.
The preparation of embodiment 1:C50 volcanic ash blending concrete
Binder total amount 380kg (65% cement, 30% volcanic ash, 5% silicon ash)
Sand coarse aggregate ratio 0.44
Water-cement ratio 0.42
Concrete proportioning such as following table (unit: kg)
Mixture slump: 20.0cm
28 days ultimate compression strength: 61.9MPa
56 days displacement flux: 768C satisfy conventional environment design period life requirement in following 100 year; Satisfy H3, the design period life requirement in 100 year of H4 environmental activity grade.
The preparation of embodiment 2:C30 volcanic ash blending concrete
Binder total amount 320kg (68% cement, 30% volcanic ash, 2% silicon ash)
Sand coarse aggregate ratio 0.44
Water-cement ratio 0.5
Concrete proportioning such as following table (unit: kg)
Mixture slump: 19.5cm
28 days ultimate compression strength: 39.8MPa
56 days displacement flux: 768C satisfy conventional environment design period life requirement in following 100 year; Satisfy H3, the design period life requirement in 100 year of H4 environmental activity grade.
Claims (3)
1. medium tenacity grade high-performance volcanic ash blending concrete, it is characterized in that: this concrete is 320～380kg by every cubic metre of binder total amount, gelling material contains cement 65～68%, volcanic ash 30%, silicon ash 2～5% by weight percentage, adds polycarboxylic acid series high efficiency water reducing agent by 0.8～1.0% of gelling material weight during the concrete preparation.
2. medium tenacity grade high-performance volcanic ash blending concrete as claimed in claim 1, it is characterized in that: described pozzuolanic activity index is not less than 62%, 80 μ m square hole sieve and tails over 5～7%.
3. medium tenacity grade high-performance volcanic ash blending concrete as claimed in claim 1 is characterized in that: this concrete preparation folk prescription water consumption is no more than 160kg, and water-cement ratio is not more than 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101054611A CN102153325A (en) | 2011-04-26 | 2011-04-26 | Medium-strength-grade high-performance concrete using volcanic ash as admixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101054611A CN102153325A (en) | 2011-04-26 | 2011-04-26 | Medium-strength-grade high-performance concrete using volcanic ash as admixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102153325A true CN102153325A (en) | 2011-08-17 |
Family
ID=44435055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101054611A Pending CN102153325A (en) | 2011-04-26 | 2011-04-26 | Medium-strength-grade high-performance concrete using volcanic ash as admixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102153325A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882941A (en) * | 2017-01-10 | 2017-06-23 | 山东森森矿业新材料有限公司 | A kind of high-performance trass concrete and its production technology |
| CN109095833A (en) * | 2018-07-26 | 2018-12-28 | 中国建筑第八工程局有限公司 | High-performance trass concrete for highlands super high-rise pumping |
| CN109095832A (en) * | 2017-07-13 | 2018-12-28 | 中交武汉港湾工程设计研究院有限公司 | A kind of high-performance volcanic ash machine-made sand concrete |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850707A (en) * | 2006-05-11 | 2006-10-25 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
-
2011
- 2011-04-26 CN CN2011101054611A patent/CN102153325A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1850707A (en) * | 2006-05-11 | 2006-10-25 | 同济大学 | Self-compacted concrete of resisting erosion of sulfate and its preparing method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882941A (en) * | 2017-01-10 | 2017-06-23 | 山东森森矿业新材料有限公司 | A kind of high-performance trass concrete and its production technology |
| CN109095832A (en) * | 2017-07-13 | 2018-12-28 | 中交武汉港湾工程设计研究院有限公司 | A kind of high-performance volcanic ash machine-made sand concrete |
| CN109095833A (en) * | 2018-07-26 | 2018-12-28 | 中国建筑第八工程局有限公司 | High-performance trass concrete for highlands super high-rise pumping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103288398B (en) | High-performance machine-made sand marine concrete and preparation method thereof | |
| CN103224357B (en) | Green environmentally-friendly broken stone active powder concrete | |
| CN104724989A (en) | Ground limestone powder full-manufactured sand high-strength recycled self-compacting concrete and application thereof | |
| CN104150840B (en) | C60 full-manufactured sand super high-rise pump concrete | |
| CN105272091B (en) | Geopolymer combined casting material and its preparation and application | |
| CN102199023B (en) | Building mortar prepared by using desert Aeolian sand and preparation method thereof | |
| CN105330194A (en) | Nano suspension liquid concrete early strength agent and preparation method thereof | |
| CN101767960A (en) | Recycled concrete coarse aggregate modified processing method | |
| CN100509688C (en) | C100 high-performance concrete and formulation method thereof | |
| CN110304872B (en) | Nano modified cement-based underwater non-dispersible material and preparation method thereof | |
| CN106892622A (en) | A kind of large dosage iron tailing concrete and preparation method thereof | |
| CN103553460B (en) | C200 strength-grade concrete for formed steel concrete composite structure | |
| CN103664094A (en) | Light-weight aggregate concrete and preparation method thereof | |
| CN105016671B (en) | A kind of superfluidity self-compacting concrete and preparation method thereof | |
| CN102173684A (en) | Concrete prepared from tunnel waste slag and mineral admixture with large mixing amount and preparation method thereof | |
| CN102887676A (en) | C30 concrete prepared from high-concentration concrete waste slurry water | |
| CN103553459A (en) | C190 strength-grade concrete for formed steel concrete composite structure | |
| CN113192574A (en) | Design method for mixing proportion of spontaneous combustion coal gangue aggregate concrete with C30-C40 | |
| CN103570307A (en) | Anticorrosion rust-proof pre-stressed duct grouting material | |
| CN110451885A (en) | A kind of high-strength superhigh-lift pump concrete viscosity reduction regulation method based on material particle size matched design | |
| CN102701654B (en) | Low-creep concrete | |
| CN102153325A (en) | Medium-strength-grade high-performance concrete using volcanic ash as admixture | |
| CN105837119B (en) | A kind of concrete for reinforced concrete composite structure C230 strength grades | |
| CN104773982A (en) | Novel high performance concrete and preparation method thereof | |
| CN102161583B (en) | Abrasion resistant low-heat portland cement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110817 |