CN103351139A - Block stone/chip stone self-compaction concrete - Google Patents
Block stone/chip stone self-compaction concrete Download PDFInfo
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- CN103351139A CN103351139A CN2013102842334A CN201310284233A CN103351139A CN 103351139 A CN103351139 A CN 103351139A CN 2013102842334 A CN2013102842334 A CN 2013102842334A CN 201310284233 A CN201310284233 A CN 201310284233A CN 103351139 A CN103351139 A CN 103351139A
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Abstract
The invention discloses block stone/chip stone self-compaction concrete. The block stone/chip stone self-compaction concrete is characterized in that block stone/chip stone is directly placed in a construction bin to form a chip stone body, wherein the accumulation rate of the chip stone is 50-60%; and then superfluid self-compaction concrete is poured on the chip stone body and is hardened so as to obtain the block stone/chip stone self-compaction concrete, wherein the slump SL of the superfluid self-compaction concrete is greater than or equal to 250 mm and less than or equal to 290 mm, and the slump flow SL is greater than or equal to 650 mm and less than or equal to 800 mm. The block stone/chip stone self-compaction concrete has the advantages of low construction cost, high construction speed, quality assurance, energy conservation and environmental protection.
Description
Technical field
The present invention relates to building material technical field, particularly a kind of slabstone self-compacting concrete.
Background technology
The sheet stone concrete is Structural Engineering material of construction commonly used in the capital construction (as: slabstone concrete dam, slabstone concrete retaining wall, sheet stone concrete are contained wall etc.), according to relevant standard, the concrete construction of slabstone is to add slabstone or piece stone in casting process in normal concrete, form sheet stone concrete synthesis, because the serviceability of traditional normal concrete is low, if the slabstone amount that adds is excessive, easily cause and produce space, cavity between the slabstone, the well combination of concrete and slabstone has reduced the concrete over-all properties of slabstone.Therefore in the regulation and stipulation sheet stone concrete, the volume of slabstone can not be greater than 25% of sheet stone concrete cumulative volume.This has just caused, and the slabstone concrete quality is wayward, cost is high.
Summary of the invention
A kind of cost that the object of the invention is to overcome above-mentioned shortcoming and provide is low, construction speed is fast, the piece slabstone self-compacting concrete of quality-guarantee and energy-conserving and environment-protective.
Of the present invention slabstone self-compacting concrete directly put into the construction storehouse with piece stone/slabstone, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 50%～60%; Then the cast slump is that 250mm≤SL≤290mm, slump divergence are the superfluidity self-compacting concrete of 650mm≤SL≤800mm on the slabstone body, after the sclerosis and get final product.
Above-mentioned piece slabstone self-compacting concrete, wherein: the particle diameter of boulder/sheet is no more than 1.2m.
Above-mentioned piece slabstone self-compacting concrete, wherein: piece stone/slabstone for clean, hard without weathering, quality, without wrapping up in mud, the low 40MPa of saturation water ultimate compression strength, maximum particle diameter 3/4 structural section size, minimum grain size should not less than 30cm, be no more than 10% less than the 30cm particle diameter.
Above-mentioned piece slabstone self-compacting concrete, wherein: the used cement of superfluidity self-compacting concrete be the P.C32.5 ordinary Portland cement or
P.O42.5 ordinary Portland cement.
Above-mentioned piece slabstone self-compacting concrete, wherein: the superfluidity self-compacting concrete uses to gather materials and is Machine-made Sand particle diameter≤4.75mm; Rubble: particle diameter 5～9.5mm, dust content is not more than 12%, silt content MB≤1.4, continuous grading.
Above-mentioned piece slabstone self-compacting concrete, wherein: the superfluidity self-compacting concrete uses flyash to be not less than the II level as specification, and corresponding index satisfies code requirement.
Above-mentioned piece slabstone self-compacting concrete, wherein: the superfluidity self-compacting concrete uses admixture to be polycarboxylic admixture, and corresponding index satisfies the admixture performance requriements.
A kind of slabstone self-compacting concrete may further comprise the steps:
(1) boulder/slabstone that maximum particle diameter is no more than 1.2m is directly put into the construction storehouse, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 50%～60%;
(2) ((the superfluidity self-compacting concrete of 650mm≤SL≤800mm) is after the sclerosis and get final product for 250mm≤SL≤290mm), slump divergence then to pour into a mould the slump on the slabstone body.
The present invention compared with prior art, has obvious beneficial effect, as can be known from the above technical solutions: the present invention directly puts into the construction storehouse with boulder/slabstone that maximum particle diameter is no more than 1.2m, the slabstone deposition rate is 50%～60%, be formed with the slabstone body of a fixed gap, then the high slump of cast (250mm≤SL≤290mm), high slump divergence (the superfluidity self-compacting concrete of 650mm≤SL≤800mm) on the slabstone body, rely on its deadweight, fill the slabstone space fully, fill degree of compactness and cementing rate and reach 100%, its performance index meet design requirement.Its superfluidity, intensity etc. satisfy the structural requirements such as all types of slabstone concrete dams, slabstone concrete retaining wall, sheet stone concrete culvert wall.Than traditional conventional bar sheet stone concrete and mortar masonry Stability Analysis of Structures.Construction efficiency is high, compares duration minimizing 50% with normal concrete.Save human resources, save 70%～80% than the normal concrete construction.Adopt self-compacting ability, do not need to vibrate, do not have noise pollution.The present invention has that cost is low, construction speed is fast, energy-conserving and environment-protective a bit, have boundless popularizing application prospect.
The specific embodiment of the present invention is provided in detail by following examples.
Embodiment
Describe the present invention below in conjunction with example, further explain and illustrate technical scheme characteristics of the present invention.
Embodiment 1
The preparation method of a kind of slabstone self-compacting concrete may further comprise the steps:
(1) boulder/slabstone that maximum particle diameter is no more than 1.2m is directly put into the construction storehouse, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 50%;
(2) the superfluidity self-compacting concrete of cast slump 250mm, slump divergence 650mm on the slabstone body then, rely on its deadweight, fill the slabstone space fully, the superfluidity self-compacting concrete hardens rear and slabstone forms concrete structure complete, closely knit, low hydration heat.
Wherein: slabstone: clean, hard without weathering, quality, without wrapping up in mud, the low 40MPa of saturation water ultimate compression strength, maximum particle diameter 3/4 structural section size, minimum grain size should not less than 30cm, be no more than 10% less than the 30cm particle diameter.
The used cement of superfluidity self-compacting concrete is: the P.C32.5 ordinary Portland cement.
The superfluidity self-compacting concrete is used to gather materials: Machine-made Sand particle diameter≤4.75mm; Rubble: particle diameter 5～9.5mm, dust content is not more than 12%, silt content MB≤1.4, continuous grading.
The used flyash of superfluidity self-compacting concrete: specification is not less than the II level, and corresponding index satisfies code requirement.
The used admixture of superfluidity self-compacting concrete: volume 0.8 ~ 1.2%.
Embodiment 2
The preparation method of a kind of slabstone self-compacting concrete may further comprise the steps:
(1) boulder/slabstone that maximum particle diameter is no more than 1.2m is directly put into the construction storehouse, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 60%;
(2) then on the slabstone body cast high slump 290mm, high slump divergence 800mm the superfluidity self-compacting concrete, rely on its deadweight, fill the slabstone space fully, the superfluidity self-compacting concrete hardens rear and slabstone forms concrete structure complete, closely knit, low hydration heat.
Wherein: slabstone: clean, hard without weathering, quality, without wrapping up in mud, the low 40MPa of saturation water ultimate compression strength, maximum particle diameter 3/4 structural section size, minimum grain size should not less than 30cm, be no more than 10% less than the 30cm particle diameter.
The used cement of superfluidity self-compacting concrete is: the P.C32.5 ordinary Portland cement.
The superfluidity self-compacting concrete is used to gather materials: Machine-made Sand particle diameter≤4.75mm; Rubble: particle diameter 5～9.5mm, dust content is not more than 12%, silt content MB≤1.4, continuous grading.
The used flyash of superfluidity self-compacting concrete: specification is not less than the II level, and corresponding index satisfies code requirement.
The used admixture of superfluidity self-compacting concrete: volume 0.8 ~ 1.2%.
Embodiment 3
The preparation method of a kind of slabstone self-compacting concrete may further comprise the steps:
(1) boulder/slabstone that maximum particle diameter is no more than 1.2m is directly put into the construction storehouse, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 55%;
(2) the superfluidity self-compacting concrete of cast slump 270mm, slump divergence 750mm on the slabstone body then, rely on its deadweight, fill the slabstone space fully, the superfluidity self-compacting concrete hardens rear and slabstone forms concrete structure complete, closely knit, low hydration heat.
Wherein: slabstone: clean, hard without weathering, quality, without wrapping up in mud, the low 40MPa of saturation water ultimate compression strength, maximum particle diameter 3/4 structural section size, minimum grain size should not less than 30cm, be no more than 10% less than the 30cm particle diameter.
The used cement of superfluidity self-compacting concrete is:
P.O42.5.
The superfluidity self-compacting concrete is used to gather materials: Machine-made Sand particle diameter≤4.75mm; Rubble: particle diameter 5～9.5mm, dust content is not more than 12%, silt content MB≤1.4, continuous grading.
The used flyash of superfluidity self-compacting concrete: specification is not less than the II level, and corresponding index satisfies code requirement.
The used admixture of superfluidity self-compacting concrete: volume 0.8 ~ 1.2%.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, any technical solution of the present invention content that do not break away from,, all still belong in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment does according to technical spirit of the present invention.
Claims (7)
1. piece slabstone self-compacting concrete is characterized in that: piece stone/slabstone is directly put into the construction storehouse, and the slabstone deposition rate is formed with the slabstone body of a fixed gap 50%～60%; Then the cast slump is that 250mm≤SL≤290mm, slump divergence are the superfluidity self-compacting concrete of 650mm≤SL≤800mm on the slabstone body, after the sclerosis and get final product.
2. as claimed in claim 1 slabstone self-compacting concrete, it is characterized in that: the particle diameter of boulder/sheet is no more than 1.2m.
3. as claimed in claim 1 or 2 slabstone self-compacting concrete, it is characterized in that: piece stone/slabstone for clean, hard without weathering, quality, without wrapping up in mud, the not low 40MPa of saturation water ultimate compression strength, maximum particle diameter 3/4 structural section size, minimum grain size should not less than 30cm, be no more than 10% less than the 30cm particle diameter.
4. as claimed in claim 3 slabstone self-compacting concrete is characterized in that: the used cement of superfluidity self-compacting concrete be the P.C32.5 ordinary Portland cement or
P.O42.5 ordinary Portland cement.
5. as claimed in claim 3 slabstone self-compacting concrete is characterized in that: the superfluidity self-compacting concrete uses to gather materials and is Machine-made Sand particle diameter≤4.75mm; Rubble: particle diameter 5～9.5mm, dust content is not more than 12%, silt content MB≤1.4, continuous grading.
6. as claimed in claim 3 slabstone self-compacting concrete, it is characterized in that: the superfluidity self-compacting concrete uses flyash to be not less than the II level as specification, and corresponding index satisfies code requirement.
7. as claimed in claim 3 slabstone self-compacting concrete, it is characterized in that: the superfluidity self-compacting concrete uses admixture to be polycarboxylic admixture, and corresponding index satisfies the admixture performance requriements.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102842334A CN103351139A (en) | 2013-07-08 | 2013-07-08 | Block stone/chip stone self-compaction concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102842334A CN103351139A (en) | 2013-07-08 | 2013-07-08 | Block stone/chip stone self-compaction concrete |
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| CN103351139A true CN103351139A (en) | 2013-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130297A (en) * | 2015-07-29 | 2015-12-09 | 中交一公局第六工程有限公司 | Super-fluid PVA fiber concrete and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074560A (en) * | 2007-06-08 | 2007-11-21 | 清华大学 | Method for constructing normal piled concrete |
| CN101144279A (en) * | 2007-09-14 | 2008-03-19 | 清华大学 | Jackstone-type rockfill concrete construction method |
| CN101718086A (en) * | 2009-11-05 | 2010-06-02 | 河海大学 | Concrete-enrockment mixed dam and construction method thereof |
| CN102951876A (en) * | 2011-08-17 | 2013-03-06 | 中冶天工上海十三冶建设有限公司 | Vibration-free self-compacting concrete composition |
-
2013
- 2013-07-08 CN CN2013102842334A patent/CN103351139A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074560A (en) * | 2007-06-08 | 2007-11-21 | 清华大学 | Method for constructing normal piled concrete |
| CN101144279A (en) * | 2007-09-14 | 2008-03-19 | 清华大学 | Jackstone-type rockfill concrete construction method |
| CN101718086A (en) * | 2009-11-05 | 2010-06-02 | 河海大学 | Concrete-enrockment mixed dam and construction method thereof |
| CN102951876A (en) * | 2011-08-17 | 2013-03-06 | 中冶天工上海十三冶建设有限公司 | Vibration-free self-compacting concrete composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130297A (en) * | 2015-07-29 | 2015-12-09 | 中交一公局第六工程有限公司 | Super-fluid PVA fiber concrete and preparation method thereof |
| CN105130297B (en) * | 2015-07-29 | 2017-12-15 | 中交一公局第六工程有限公司 | A kind of superfluidity PVA fiber concretes and preparation method thereof |
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Application publication date: 20131016 |