CN102320785B - Shrinkage-free grouting reinforcing material and preparation process thereof - Google Patents
Shrinkage-free grouting reinforcing material and preparation process thereof Download PDFInfo
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- CN102320785B CN102320785B CN 201110163071 CN201110163071A CN102320785B CN 102320785 B CN102320785 B CN 102320785B CN 201110163071 CN201110163071 CN 201110163071 CN 201110163071 A CN201110163071 A CN 201110163071A CN 102320785 B CN102320785 B CN 102320785B
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- reinforcing material
- grouting reinforcing
- peastone
- shunk
- quartz sand
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Abstract
The invention discloses a shrinkage-free grouting reinforcing material and a preparation process thereof. The shrinkage-free grouting reinforcing material comprises the following components in percentage by weight: 16-24% of cement, 1.2-3.4% of expanding agent, 3.2-6.8% of fly ash, 1.6-2.4% of silica fume, 0.3-0.5% of water reducing agent, 0.03-0.12% of defoamer, 33-45% of quartz sand and 20-34% of pisolite. In the invention, the expanding agent and fly ash are reasonably matched, continuously graded quartz sand is used as fine aggregate, and the shrinkage and expansion rates of the reinforcing material in a plastic stage and a solidifying stage are precisely controlled, thus the reinforcing material has no shrinkage in any stage even in thick layer reinforcing construction.
Description
Technical field
The invention belongs to building structure reparation and field of reinforcement, be specifically related to a kind of nothing that can accurately control plastic stage and cure stage rate of expansion and shrink grouting reinforcing material and blending process thereof.
Background technology
In recent years, in the infringement reparation and increasing section reinforcing engineering of building structure, self-compacting concrete and grouting material are used comparatively extensive.Self-compacting concrete need to be applicable to the engineering of big area and thick-layer reparation and reinforcing, thereby easily existing segregation to make in construction process to reinforce the position cracking phenomena occurs.
Grouting material is often used as the Equipment Foundations back-grouting, when as building structure reparation and reinforcing, cause later stage dry shrinkage cracking because be difficult to control the expansion of plastic stage and cure stage, grading of aggregate selects the segregation of unreasonable generation to aggravate especially generation and the development of ftractureing, in the thick-layer strengthening construction, the shrinkage cracking phenomenon of grouting material is comparatively common.
Summary of the invention
Be to propose a kind of nothing order of the present invention and shrink grouting reinforcing material and blending process thereof, can accurately control plastic stage and cure stage rate of expansion, thereby guarantee its shrinkage-free building structure strengthening material, can be used for building structure reparation and reinforcing engineering.
The present invention is achieved by the following technical solutions:
A kind of nothing is shunk grouting reinforcing material, comprises cement, swelling agent, flyash, silicon ash, water reducer, defoamer, quartz sand, peastone, and the weight percent of each composition is:
Preferably, described cement is ordinary Portland cement.
Preferably, described swelling agent is calcium sulphoaluminate class swelling agent.
Preferably, described flyash is I level flyash.
Preferably, described silicon ash specific surface area is greater than 15000m
2/ kg.
Preferably, described water reducer is calcium lignin sulphonate.
Preferably, described quartz sand is the machine-processed quartz sand with continuous grading of nominal maximum aggregate size 5mm.
Preferably, described peastone is the peastone of maximum particle diameter 16mm.
The present invention also provides above-mentioned blending process without shrinking grouting reinforcing material, and for premixing dry-mixed mortar mixes the peastone method, its concrete steps are as follows:
(1) at first by weight accurately taking each raw material;
(2) cement, swelling agent, flyash, silicon ash, water reducer, defoamer are first added in mixing machine and to mix 3 minutes;
(3) then add quartz sand fully to mix 1 minute;
(4) use at last packaging bags, obtain being dry mixed the packing mortar;
When (5) construction is used at the scene, need in proportion water to be added dry powder, the mixture of the composition during described dry powder refers to fill a prescription except peastone mixes the peastone of the weight 30%～50% of dry powder simultaneously, and utilizes forced mixer to mix and stir to having abundant mobility and can use.
Preferably, the quartz sand in described step (3) is in advance through accurately screening processing.
Preferably, the packing bag in described step (4) is the moisture-proof packing bag of inner lining plastic bag.
Producing principle of the present invention: the present invention is by using swelling agent to control the total volume expansivity of reinforced material, and adopt flyash to control its strength development speed, the rational proportion of swelling agent and flyash consumption can accurately be controlled reinforced material in the rate of expansion of plastic stage and cure stage, even make reinforced material also can guarantee in any stage without contraction in the thick-layer strengthening construction.The continuous grading quartz sand that adopts provides the good mobility of reinforced material and anti-segregation effect, and it is more closely knit to make interior each component of reinforced material fill mutually, mixes peastone and can reduce to a great extent reinforced material later stage dry shrinkage cracking hidden danger.The defoamer that adopts has been eliminated the reinforced material air entrapment, makes reinforced material inside finer and close, has improved its intensity.
Beneficial effect: the present invention has following advantage:
(a) the reinforced material mobility is large, and early strength is high, applicable to building structure reparation and the reinforcing engineering at intensive arrangement of reinforcement place;
(b) accurately control the rate of expansion of reinforced material, make reinforced material in any stage of aquation without contraction, be applicable to the thick-layer strengthening construction;
(c) adopt the quartz sand of continuous grading, significantly improved the anti-segregation effect of reinforced material, and make reinforced material inside more closely knit;
(d) Mortar'S Flowability of reinforced material inside is little through time loss, and in 30 minutes, the degree of mobilization conservation rate greater than 90%, has extended the construction operable time;
(e) adopt the peastone of specified dimension, the reinforced material later stage, anti-shrinkage cracking ability was strong;
(f) factory's premixing is dry mixed packing, constant product quality, and easy construction is easy to operate.
Embodiment
The below elaborates to embodiments of the invention: the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Reinforced material all adopts and is dry mixed packing mortar and peastone, and test sample is the scene and mixes and stirs gained with condition.
Embodiment 1:
Its concrete operation step is as follows:
(1) at first by weight accurately taking each raw material;
(2) cement, swelling agent, flyash, silicon ash, water reducer, defoamer are first added in mixing machine and to mix 3 minutes;
(3) then add the quartz sand of processing through accurate screening in advance fully to mix 1 minute;
(4) pack with the moisture-proof packing bag of inner lining plastic bag at last, obtain being dry mixed the packing mortar;
When (5) construction is used at the scene, need in proportion water to be added dry powder, the mixture of the composition during described dry powder refers to fill a prescription except peastone mixes the peastone of the weight 35% of dry powder simultaneously, and utilizes forced mixer to mix and stir to having abundant mobility and can use.
Embodiment 2:
Its concrete operation step is as follows:
(1) at first by weight accurately taking each raw material;
(2) cement, swelling agent, flyash, silicon ash, water reducer, defoamer are first added in mixing machine and to mix 3 minutes;
(3) then add the quartz sand of processing through accurate screening in advance fully to mix 1 minute;
(4) pack with the moisture-proof packing bag of inner lining plastic bag at last, obtain being dry mixed the packing mortar;
When (5) construction is used at the scene, need in proportion water to be added dry powder, the mixture of the composition during described dry powder refers to fill a prescription except peastone mixes the peastone of the weight 40% of dry powder simultaneously, and utilizes forced mixer to mix and stir to having abundant mobility and can use.
Embodiment 3:
Its concrete operation step is as follows:
(1) at first by weight accurately taking each raw material;
(2) cement, swelling agent, flyash, silicon ash, water reducer, defoamer are first added in mixing machine and to mix 3 minutes;
(3) then add the quartz sand of processing through accurate screening in advance fully to mix 1 minute;
(4) pack with the moisture-proof packing bag of inner lining plastic bag at last, obtain being dry mixed the packing mortar;
When (5) construction is used at the scene, need in proportion water to be added dry powder, the mixture of the composition during described dry powder refers to fill a prescription except peastone mixes the peastone of the weight 45% of dry powder simultaneously, and utilizes forced mixer to mix and stir to having abundant mobility and can use.
On simultaneous test sample selection market, the routine building structure is mixed the peastone of dry powder quality 50% with grouting material, chooses its typical performance and each embodiment contrast as following table (1):
Table (1)
Above demonstration and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. a nothing is shunk grouting reinforcing material, it is characterized in that, comprise cement, swelling agent, flyash, silicon ash, water reducer, defoamer, quartz sand, peastone, the weight percent of each composition is:
2. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described cement is ordinary Portland cement.
3. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described swelling agent is calcium sulphoaluminate class swelling agent.
4. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described flyash is I level flyash.
5. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described silicon ash specific surface area is greater than 15000m
2/ kg.
6. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described water reducer is calcium lignin sulphonate.
7. a kind of nothing according to claim 1 is shunk grouting reinforcing material, it is characterized in that, described quartz sand is the machine-processed quartz sand with continuous grading of nominal maximum aggregate size 5mm, and described peastone is the peastone of maximum particle diameter 16mm.
8. a kind of blending process without shrinking grouting reinforcing material as claimed in claim 1, for premixing dry-mixed mortar mixes the peastone method, its concrete steps are as follows:
(1) at first by weight accurately taking each raw material;
(2) cement, swelling agent, flyash, silicon ash, water reducer, defoamer are first added in mixing machine and to mix 3 minutes;
(3) then add quartz sand fully to mix 1 minute;
(4) use at last packaging bags, obtain being dry mixed the packing mortar;
When (5) construction is used at the scene, need in proportion water to be added dry powder, the mixture of the composition during described dry powder refers to fill a prescription except peastone mixes the peastone of the weight 30%～50% of dry powder simultaneously, and utilizes forced mixer to mix and stir to having abundant mobility and can use.
9. a kind of blending process without shrinking grouting reinforcing material according to claim 8, is characterized in that, the quartz sand in described step (3) is processed through accurately sieving in advance.
10. a kind of blending process without shrinking grouting reinforcing material according to claim 8, is characterized in that, the packing bag in described step (4) is the moisture-proof packing bag of inner lining plastic bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110163071 CN102320785B (en) | 2011-06-16 | 2011-06-16 | Shrinkage-free grouting reinforcing material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110163071 CN102320785B (en) | 2011-06-16 | 2011-06-16 | Shrinkage-free grouting reinforcing material and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102320785A CN102320785A (en) | 2012-01-18 |
| CN102320785B true CN102320785B (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110163071 Expired - Fee Related CN102320785B (en) | 2011-06-16 | 2011-06-16 | Shrinkage-free grouting reinforcing material and preparation process thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617064A (en) * | 2012-02-17 | 2012-08-01 | 温建忠 | Dedicated colloidal crystals for non-shrink super flow state cement mortar and cement mortar |
| CN103922660A (en) * | 2014-03-13 | 2014-07-16 | 东南大学 | Shrinkage-free ultrahigh-strength grouting material for connection of steel bar sleeves |
| CN106904901B (en) * | 2015-12-22 | 2019-01-04 | 祎禾科技有限公司 | The reinforcement and repair mortar and preparation method thereof that shrinking percentage is zero |
| CN110590310A (en) * | 2019-10-09 | 2019-12-20 | 镇江长和新材料科技有限公司 | Self-compacting concrete material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887781A (en) * | 2006-07-13 | 2007-01-03 | 内蒙古科技大学 | No-shrinkage grouting filler with adjustable performance |
| CN101928120A (en) * | 2009-06-18 | 2010-12-29 | 中冶成工上海五冶建设有限公司 | Self-flow hard grouting material and using method thereof |
-
2011
- 2011-06-16 CN CN 201110163071 patent/CN102320785B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887781A (en) * | 2006-07-13 | 2007-01-03 | 内蒙古科技大学 | No-shrinkage grouting filler with adjustable performance |
| CN101928120A (en) * | 2009-06-18 | 2010-12-29 | 中冶成工上海五冶建设有限公司 | Self-flow hard grouting material and using method thereof |
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| Publication number | Publication date |
|---|---|
| CN102320785A (en) | 2012-01-18 |
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Granted publication date: 20130522 Termination date: 20180616 |