CN101823858B - Self-compacting concrete - Google Patents
Self-compacting concrete Download PDFInfo
- Publication number
- CN101823858B CN101823858B CN2010101520838A CN201010152083A CN101823858B CN 101823858 B CN101823858 B CN 101823858B CN 2010101520838 A CN2010101520838 A CN 2010101520838A CN 201010152083 A CN201010152083 A CN 201010152083A CN 101823858 B CN101823858 B CN 101823858B
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- Prior art keywords
- self
- cement
- compacting concrete
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- concrete
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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
-
- 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
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00103—Self-compacting mixtures
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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 invention relates to a self-compacting concrete, which is characterized by comprising 100 parts of cement, 60-100 parts of coal ash, 20-50 parts of saw dust, 100-200 parts of gravel, 1-5 parts of polycarboxylate superplasticizer, 0.001-0.08 part of tackifier, 0.001-0.1 part of defoamer, 20-30 parts of siliceous dust, 27-42 parts of quartz powder, 100-120 parts of quartz sand, 0.4-1 part of super plasticizing agent, 130-150 parts of pebble and 130-150 parts of macadam, so a structure with a complex shape, a thin wall and dense reinforcing bars can be molded by pouring, abrasion of a template caused by vibrating is avoided, the abrasion of a blender caused by the concrete is reduced, cost is reduced from the aspects of increasing construction speed, limiting the noise by the environment, reducing labor, ensuring quality and the like, and the technology of using waste ceramics to replace natural aggregate to prepare regenerated self-compacting concrete is very suitable for the currently advocated theme of environment protection and energy saving of the construction system, has obvious environmental, economic and social benefits, and particularly can effectively enhance compression strength, density, tensile strength, flexural strength, modulus of elasticity and other indexes. The self-compacting concrete is suitable for continuously pouring various intensive steel bars and special-shaped structures with large size, high density and large span.
Description
(1) technical field
The present invention relates to a kind of self-compacting concrete.
(2) background technology
At present; In concrete construction, pumping is adopted in onsite concrete usually, adopts vibration compactings such as hand-held vibrating head; But face big volume, large span member; Can't guarantee that at all feeding is even, vibration compacting, therefore need to adopt a kind of high property self-compacting concrete that is more suitable for, satisfy the demand.
Self-compacting concrete is higher to workability and durability requirement; Require also very harsh to starting material and proportioning; MIX DESIGN OF SELF COMPACTING CONCRETE need take into full account self-compacting concrete flowability, education resistance, the mutual relationship between fillibility, slurry consumption and volume stability and contradiction thereof.The self-compacting concrete of being known now is mostly to the research of significant parameters such as water consumption, sand coarse aggregate ratio, flyash, swelling agent; But the research for auxiliary ingredients is considerably less; Research to auxiliary material obviously lacks, and therefore, develops a kind of novel self-compacting concrete for being badly in need of.
(3) summary of the invention
The object of the present invention is to provide a kind of self-compacting concrete; Can effectively improve concrete performance; Make the flowability and the cohesiveness of companion and thing better; Have better education resistance, from characteristics such as fillibility, volume stabilities, especially be suitable for the high-density reinforcing bar of big area, large span, the cast of abnormally-structured concrete continuous.
Solution of the present invention is on the basis of existing technology, and a kind of self-compacting concrete is characterized in that comprising 100 parts of cement; Flyash 60-100 part; Wood chip 20-50 part, polycarboxylate water-reducer 1-5 part, 0.001～0.08 part of tackifier, skimmer 0.001-0.1 part, silicon ash 20-30 part, silica powder 27-42 part, silica sand 100-120 part, superplasticizer 0.4-1 part, cobble 130-150 part and rubble 130-150 part.Like this, can guarantee that concrete is closely knit well, effectively enhance productivity; Owing to need not vibrate, the time that concrete placement needs shortens significantly, and labor strength reduces significantly; Need number of workers to reduce, can be good at improving Working environment and security, noise does not vibrate; The vibrational arm syndromes of avoiding the hand-held for a long time vibrator of workman to cause is improved concrete surface quality, open bubble or honeycomb and scale can not occur; Need not carry out skin patching, can true to naturely present the texture or the moulding of template surface, increase the structure degree of freedom in design; Need not vibrate, can build the structure of forming shape complicacy, thin-walled and intensive arrangement of reinforcement, avoid the wearing and tearing of vibrating template being produced; Reduce the wearing and tearing of concrete to stirrer; Can reduce the engineering overall cost, reduce cost from improving many aspects such as speed of application, environment limits, reduces artificial to noise and ensure the quality of products, and adopt fine aggregates such as silica powder, silica sand can enough improve concrete weather resistance effectively; Improve concrete fire-resistant, erosion resistance, insulativity; And use wood chip preparation regeneration self-compacting concrete technology, be well suited for the present building system environmental protection and energy saving theme of advocating, tangible environmental benefit, economic benefit and social benefit are arranged; Particularly indexes such as anti-segregation ability, resistance to cleavage, ultimate compression strength, density, split tensile strength, folding strength and Young's modulus be can effectively strengthen, various big volumes, big density, large span, intensive reinforcing bar, abnormally-structured continuously poured are applicable to.
The present invention is that also described cobble and rubble mixed by weight 1: 1.Like this, form the optimal coarse aggregate collocation, concrete pumpability is best, thereby forms the higher concrete of degree of compactness, forms the higher concrete product of intensity.
The present invention is that also described cobble particle diameter is the 5-16mm continuous grading, and ballast grain sizes is the 10-20mm continuous grading.Like this, form the different coarse aggregate particle of thickness, interspersed small size particle forms more closely knit concrete in the middle of large-size particles, and concrete pumpability is best, thereby obtains more high-strength concrete structure.
The present invention also is described cobble and rubble all through washing, and silt content is less than 0.5%.Like this, the cohesiveness between cobble and rubble and the agglutinate is better, can prevent segregation effectively, prevents the concrete product cracking, thereby forms the concrete structure of better quality.
The present invention is that also the silica sand fineness is the 40-140 order.Like this, the silica sand fineness can improve concrete weather resistance for the 40-140 order is preferred silica sand size range, improves concrete fire-resistant, erosion resistance, insulativity, forms the higher concrete of degree of compactness, thereby forms the High Strength Concrete Structures product.
The present invention is that also the silica powder fineness is the 200-600 order.Like this, the silica powder fineness can improve concrete weather resistance for the 200-600 order is preferred silica powder size range, improves concrete fire-resistant, erosion resistance, insulativity, forms the higher concrete of degree of compactness, thereby forms the High Strength Concrete Structures product.
The present invention is that also described self-compacting concrete also includes fly ash float.Like this, make self-compacting coagulate soil and have performances such as good heat-resistance, heat insulation, fire prevention, can replace materials such as additional high temperature resistant, heat insulation, fire prevention, reduce cost effectively.
The present invention is that also the content of described fly ash float is 3%～10% of cement content.Like this, the fly ash floats that add different amounts can better reach performances such as specific high temperature resistant, heat insulation, fire prevention, can require and require to choose according to working design, to satisfy the needs of varying environment.
The present invention is that also described self-compacting concrete also includes the alkaline activation fly ash float.Like this, have light weight, hollow, heatproof, inexpensive characteristics, mechanical performance of concrete and serviceability are had good improvement.
The present invention is that also the content of described alkaline activation fly ash float is 3%～10% of cement content.Like this, the fly ash float that adds different amounts can better reach better heatproof effect and lighter quality, can effectively practice thrift the consumption of other materials, practices thrift cost.
The present invention is that also described self-compacting concrete also includes fly ash float and alkaline activation fly ash float.Like this, make self-compacting coagulate soil and have performances such as good heat-resistance, heat insulation, fire prevention, hollow, lightweight, can replace materials such as additional high temperature resistant, heat insulation, fire prevention, reduce cost effectively.
The present invention is that also the content of described fly ash float and alkaline activation fly ash float is respectively 3%～10% of cement content.Like this; The fly ash floats that add different amounts can better reach performances such as specific high temperature resistant, heat insulation, fire prevention, can require and require to choose according to working design, to satisfy the needs of varying environment; Simultaneously can be equipped with lighter quality again, effectively reduce material cost.
The present invention is that also described flyash particle diameter is less than or equal to 40 microns, and perhaps its carbon content is less than 8%.Like this, better degree of compactness can be accessed, also better fire resistance can be obtained.
The present invention is that also described broken porcelain particle is less than 20 millimeters.Like this, can access better degree of compactness.
The present invention is that also described cement adopts silicate cement or portland cement or aluminate cement or aluminosulfate cement or ferro-aluminate cement or fluoroaluminate cement or composite Portland cement.Like this, select different cement types flexibly for use, to satisfy the needs of different constructions according to the needs of varying environment and working design.
The present invention is that also described water and cement are than≤0.4.Like this, can reach better flow effect and guarantor and mould function, can better accomplish cast, fillibility is better, can access concrete structure more uniformly densely.
The present invention is that also described self-compacting concrete also includes the steel fiber of 1%-2.5%.Like this, can make concrete structure obtain better anti-segregation ability and resistance to cleavage, when guaranteeing concrete rigidity, can effectively improve the elasticity indexes of concrete structure.
The present invention is that also sand factor is 40%-55% in the aggregate of described self-compacting concrete.Like this, can guarantee to fill closely knit, the degree of compactness of concrete itself is also higher.
(4) embodiment
Below in conjunction with embodiment the present invention is further described.
The embodiment of the invention, self-compacting concrete comprise following component: use 100 parts of cement; Flyash 60-100 part; Wood chip 20-50 part, polycarboxylate water-reducer 1-5 part, 0.001～0.08 part of tackifier, skimmer 0.001-0.1 part, silicon ash 20-30 part, silica powder 27-42 part, silica sand 100-120 part, superplasticizer 0.4-1 part, cobble 130-150 part and rubble 130-150 part.
The present invention is that also described cobble and rubble mixed by weight 1: 1.
The present invention is that also described cobble particle diameter is the 5-16mm continuous grading, and ballast grain sizes is the 10-20mm continuous grading.
The present invention also is described cobble and rubble all through washing, and silt content is less than 0.5%.
The present invention is that also the silica sand fineness is the 40-140 order.
The present invention is that also the silica powder fineness is the 200-600 order.
The present invention is that also described self-compacting concrete also includes fly ash float.
The present invention is that also the content of described fly ash float is 3%～10% of cement content.
The present invention is that also described self-compacting concrete also includes the alkaline activation fly ash float.
The present invention is that also the content of described alkaline activation fly ash float is 3%～10% of cement content.
The present invention is that also described self-compacting concrete also includes fly ash float and alkaline activation fly ash float.
The present invention is that also the content of described fly ash float and alkaline activation fly ash float is respectively 3%～10% of cement content.
The present invention is that also described flyash particle diameter is less than or equal to 40 microns, and perhaps its carbon content is less than 8%.
The present invention is that also described broken porcelain particle is less than 20 millimeters.
The present invention is that also described cement adopts silicate cement or portland cement or aluminate cement or aluminosulfate cement or ferro-aluminate cement or fluoroaluminate cement or composite Portland cement.
The present invention is that also described water and cement are than≤0.4.
The present invention is that also described self-compacting concrete also includes the steel fiber of 1%-2.5%.
The present invention is that also sand factor is 40%-55% in the aggregate of described self-compacting concrete.
The concrete real-time mode of the present invention; Adopt whipping appts; According to said ratio, drop into earlier coarse aggregate such as fine aggregate, rubble and cobbles such as sand, silica sand, silica powder, silicon ash and flyash and water and stirred 30 minutes, an amount of adding flyash is or/and alkaline fly ash float; Drop into cement and concrete admixture gelling material then and stir more than 40 minutes, mix complementary materials such as polycarboxylate water-reducer, tackifier, skimmer and superplasticizer at last.Transport trolley should be with heals cleaning in the car before connecting material, and ponding in the car is discharged, and forbids to add water in the transportation, and the whipping appts rotation is used more than 1 minute then before the discharging.
Claims (7)
1. a self-compacting concrete is characterized in that comprising 100 parts of cement; Flyash 60-100 part; Wood chip 20-50 part, polycarboxylate water-reducer 1-5 part, 0.001～0.08 part of tackifier, skimmer 0.001-0.1 part, silicon ash 20-30 part, silica powder 27-42 part, silica sand 100-120 part, superplasticizer 0.4-1 part, cobble 130-150 part and rubble 130-150 part; The cobble particle diameter is the 5-16mm continuous grading; Ballast grain sizes is the 10-20mm continuous grading; The silica sand fineness is the 40-140 order; The silica powder fineness is the 200-600 order, and the flyash particle diameter is less than or equal to 40 microns, and perhaps its carbon content is less than 8%; Self-compacting concrete also includes fly ash float and alkaline activation fly ash float, and the content of fly ash float and alkaline activation fly ash float is respectively 3%～10% of cement content.
2. a kind of self-compacting concrete according to claim 1 is characterized in that described cobble and rubble mixed by weight 1: 1.
3. a kind of self-compacting concrete according to claim 1 is characterized in that described cobble and rubble all through washing, and silt content is less than 0.5%.
4. according to the described a kind of self-compacting concrete of arbitrary claim in the claim 1 to 3, it is characterized in that described cement adopts silicate cement or portland cement or aluminate cement or aluminosulfate cement or ferro-aluminate cement or fluoroaluminate cement or composite Portland cement.
5. according to the described a kind of self-compacting concrete of arbitrary claim in the claim 1 to 3, it is characterized in that described water and cement are than≤0.4.
6. according to the described a kind of self-compacting concrete of arbitrary claim in the claim 1 to 3, it is characterized in that described self-compacting concrete also includes the steel fiber of 1%-2.5%.
7. according to the described a kind of self-compacting concrete of arbitrary claim in the claim 1 to 3, it is characterized in that sand factor is 40%-55% in the aggregate of described self-compacting concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101520838A CN101823858B (en) | 2010-04-21 | 2010-04-21 | Self-compacting concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101520838A CN101823858B (en) | 2010-04-21 | 2010-04-21 | Self-compacting concrete |
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| Publication Number | Publication Date |
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| CN101823858A CN101823858A (en) | 2010-09-08 |
| CN101823858B true CN101823858B (en) | 2012-01-18 |
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| CN2010101520838A Expired - Fee Related CN101823858B (en) | 2010-04-21 | 2010-04-21 | Self-compacting concrete |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690084A (en) * | 2011-08-25 | 2012-09-26 | 江苏荣能集团股份有限公司 | Self-compaction concrete with heavily doped fly ash and preparation method thereof |
| JP5956598B2 (en) | 2011-11-10 | 2016-07-27 | サウジ アラビアン オイル カンパニー | Use of heavy oil ash to produce self-compacted concrete |
| CN102765912A (en) * | 2012-08-15 | 2012-11-07 | 中铁二十三局集团有限公司 | Self-compacting concrete and manufacture method thereof |
| CN103803904B (en) * | 2013-12-30 | 2015-12-09 | 北京新航建材集团有限公司 | A kind of Self-compacting Lightweight Aggregates Concrete and preparation method thereof |
| CN105152586A (en) * | 2015-09-14 | 2015-12-16 | 安徽芜湖飞琪水泥制品有限公司 | Chipping cement pile material composition and preparation method of chipping cement pile |
| CN105198299A (en) * | 2015-10-13 | 2015-12-30 | 安徽芜湖飞琪水泥制品有限公司 | Oil-resistant cement pile material composition and preparation method thereof |
| CN105442756B (en) * | 2015-12-17 | 2018-01-05 | 中冶建筑研究总院有限公司 | A kind of combined special-shaped column, the structural system and its construction method for being equipped with the post |
| CN106045376B (en) * | 2016-06-01 | 2017-12-22 | 湖北大学 | A kind of low entraining shape steel tube concrete admixture and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096502A (en) * | 1993-06-18 | 1994-12-21 | 郭成正 | High-strength, lightweight, crushed stone concrete |
| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101119392A (en) * | 2007-08-21 | 2008-02-06 | 南京联创科技股份有限公司 | SOCKET united access method |
-
2010
- 2010-04-21 CN CN2010101520838A patent/CN101823858B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1096502A (en) * | 1993-06-18 | 1994-12-21 | 郭成正 | High-strength, lightweight, crushed stone concrete |
| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101119392A (en) * | 2007-08-21 | 2008-02-06 | 南京联创科技股份有限公司 | SOCKET united access method |
Non-Patent Citations (7)
| Title |
|---|
| 叶远胜 |
| 叶远胜;李艳萍;吴春雷;隋伟;杨理润;李永生.轻物质对水工混凝土性能的影响及控制.《东北水利水电》.2008,(第9期),52-54. * |
| 吴春雷 |
| 李永生.轻物质对水工混凝土性能的影响及控制.《东北水利水电》.2008,(第9期),52-54. |
| 李艳萍 |
| 杨理润 |
| 隋伟 |
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| CN101823858A (en) | 2010-09-08 |
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