CN109469263B - Quantitative grouting construction process for steel bar sleeve - Google Patents
Quantitative grouting construction process for steel bar sleeve Download PDFInfo
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- CN109469263B CN109469263B CN201811297910.5A CN201811297910A CN109469263B CN 109469263 B CN109469263 B CN 109469263B CN 201811297910 A CN201811297910 A CN 201811297910A CN 109469263 B CN109469263 B CN 109469263B
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- grouting
- sleeve
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- base surface
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
Abstract
The invention discloses a quantitative grouting construction process for a steel bar sleeve, which comprises the following steps: (1) preparing in the early stage; (2) preparing grouting material: mixing according to a mixing ratio provided by a manufacturer, and adopting warm water or auxiliary cooling measures when the natural temperature is lower than 5 ℃ or higher than 30 ℃; (3) and (3) treatment of a connection base surface: cleaning impurities such as dust and the like on a connection base surface by using an air gun before hoisting the prefabricated part, uniformly spraying water on the base surface to keep a wet state, and brushing a layer of interface agent on the surface of concrete and then carrying out setting grout treatment by using grouting material; (4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve; (5) and (3) maintaining after grouting: and protecting the connecting area of the components by using the enclosure facilities after grouting is finished. The construction process adopts a quantitative sleeve filling mode, guarantees the quantity and compactness of the slurry in the sleeve in each grouting, and avoids the hidden sleeve quality trouble caused by leakage of bubbles, holes, slurry and other reasons in the sleeve.
Description
Technical Field
The invention relates to a grouting construction process, in particular to a quantitative grouting construction process for a steel bar sleeve.
Background
In the construction of prefabricated building elements, sleeve grouting is a common element connection method. The steel bar sleeve is embedded in a building component, and when the steel bar sleeve is connected with other components, the steel bar sleeve is inserted into the sleeve through embedded steel bars and slurry is poured into the sleeve to form strength so as to realize component connection. The construction quality of the steel bar sleeve is crucial to the performance of the fabricated building structure, grouting construction belongs to a concealed project, and the grouting in the sleeve is difficult to ensure only by observing the grout outlet mode.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects in the prior art, the invention provides a quantitative grouting construction process for a steel bar sleeve, which adopts a quantitative sleeve grouting mode to ensure the quantity and compactness of grout in the sleeve at each time of grouting and avoid the hidden danger of sleeve quality caused by bubbles, holes, grout leakage and the like in the sleeve.
The technical scheme is as follows: the invention relates to a quantitative grouting construction process for a steel bar sleeve, which comprises the following steps:
(1) early preparation work: calculating the grouting amount required by one sleeve or one grouting operation according to the specifications of the grouting sleeve and the conveying pipe used for construction;
(2) preparing grouting material: mixing according to a mixing ratio provided by a manufacturer, adopting warm water or an auxiliary cooling measure when the natural temperature is lower than 5 ℃ or higher than 30 ℃, controlling the stirring speed from slow to fast, slowing down the speed for about 90s when the stirring is finished, and continuously stirring in the whole process to reduce the generation of bubbles; the grouting pump is provided with a quantitative control module and a pressure gauge to realize quantitative grouting, and a grouting test is carried out on site to determine the optimal grouting amount;
(3) and (3) treatment of a connection base surface: cleaning impurities such as dust, broken stones and the like at a connection base surface by using an air gun before hoisting the prefabricated part, uniformly spraying water on the base surface to keep a wet state, brushing a layer of interface agent on the surface of concrete, and then carrying out base grouting treatment by using grouting material, wherein the thickness of the base grouting material is 1.0-1.5cm, the base grouting material is fully paved along the long edge of the prefabricated part to form a rectangular shape, and the edge slightly protrudes by about 3-5 mm; before the prefabricated part is hoisted, wetting and brushing an interface agent on the connecting surface of the prefabricated part by using water, keeping the prefabricated part naturally and slowly fall to the connecting surface during hoisting, not shaking the prefabricated part, and after the prefabricated part is installed in place, carrying out one-time smearing on the peripheral seams to enhance the sealing effect;
(4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve, when the grout overflows from the grout outlet, the grout outlet is incompletely blocked by a rubber plug, about 1/4-area gaps are reserved for exhausting gas, bubbles and holes in the sleeve are eliminated under the action of pressure, and the grout outlet is completely blocked until a preset amount is poured; controlling the time within 45min from the completion of the preparation of the grouting material to the completion of the pouring;
(5) and (3) maintaining after grouting: after grouting is finished, the enclosure facility is used for protecting the connecting area of the components, vibration construction load cannot exist in the adjacent two-layer building structure within 48h, and the temporary support and the enclosure facility are removed after the joint strength reaches 80% of design strength.
Further, the stirring speed of the blade for stirring the grouting material in the step (2) is kept at 110-150 r/mi.
Further, the grouting speed in the step (4) is controlled to be 0.8-1.0L/min.
And (3) further, in the pouring process in the step (4), if slurry leakage at the position of the connecting base surface is found, stopping pouring, caulking by using the PE sponge strip and the polysulfide sealant according to the leakage condition, and continuing the grouting operation after the sealing is in place.
Has the advantages that: the construction process adopts a quantitative sleeve filling mode, guarantees the quantity and compactness of the slurry in the sleeve in each grouting, and avoids the hidden sleeve quality trouble caused by leakage of bubbles, holes, slurry and other reasons in the sleeve.
Detailed Description
The invention will be further illustrated with reference to specific examples:
example 1
A quantitative grouting construction process for a steel bar sleeve comprises the following steps:
(1) early preparation work: calculating the grouting amount required by one sleeve or one grouting operation according to the specifications of the grouting sleeve and the conveying pipe used for construction;
(2) preparing grouting material: mixing according to a mixing ratio provided by a manufacturer, and adopting warm water or auxiliary cooling measures when the natural temperature is lower than 5 ℃ or higher than 30 ℃; the stirring speed of the blades is kept at 110r/mi, the stirring speed is controlled from slow to fast, the speed is slowed down for about 90s when the fast stirring is finished, and the bubbles are reduced by the whole process of continuous stirring; the grouting pump is provided with a quantitative control module and a pressure gauge to realize quantitative grouting, and a grouting test is carried out on site to determine the optimal grouting amount;
(3) and (3) treatment of a connection base surface: cleaning impurities such as dust, broken stones and the like at a connection base surface by using an air gun before hoisting the prefabricated part, uniformly spraying water on the base surface to keep a wet state, brushing a layer of interface agent on the surface of concrete, and then carrying out base grouting treatment by using grouting material, wherein the thickness of the base grouting material is 1.0cm, the base grouting material is fully paved along the long edge of the prefabricated part to form a rectangular shape, and the edge slightly protrudes by about 3 mm; before the prefabricated part is hoisted, wetting and brushing an interface agent on the connecting surface of the prefabricated part by using water, keeping the prefabricated part naturally and slowly fall to the connecting surface during hoisting, not shaking the prefabricated part, and after the prefabricated part is installed in place, carrying out one-time smearing on the peripheral seams to enhance the sealing effect;
(4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve, the grouting speed is controlled to be 0.8L/min, when the grout overflows from the grout outlet, a rubber plug is used for incompletely plugging the grout outlet, about 1/4-area gaps are reserved for exhausting gas, bubbles and holes in the sleeve are eliminated under the pressure action, and the grout outlet is completely plugged after the preset amount is poured; controlling the time within 45min from the completion of the preparation of the grouting material to the completion of the pouring; if slurry leaks from the connecting base surface in the pouring process, stopping pouring, caulking by using a PE sponge strip and polysulfide sealant according to the leakage condition, and continuing the grouting operation after the sealing is in place;
(5) and (3) maintaining after grouting: after grouting is finished, the enclosure facility is used for protecting the connecting area of the components, vibration construction load cannot exist in the adjacent two-layer building structure within 48h, and the temporary support and the enclosure facility are removed after the joint strength reaches 80% of design strength.
Example 2
A quantitative grouting construction process for a steel bar sleeve comprises the following steps:
(1) early preparation work: calculating the grouting amount required by one sleeve or one grouting operation according to the specifications of the grouting sleeve and the conveying pipe used for construction;
(2) preparing grouting material: mixing according to a mixing ratio provided by a manufacturer, and adopting warm water or auxiliary cooling measures when the natural temperature is lower than 5 ℃ or higher than 30 ℃; the stirring speed of the blades is kept at 150r/mi, the stirring speed is controlled from slow to fast, the speed is slowed down for about 90s when the fast stirring is finished, and the bubbles are reduced by the whole process of continuous stirring; the grouting pump is provided with a quantitative control module and a pressure gauge to realize quantitative grouting, and a grouting test is carried out on site to determine the optimal grouting amount;
(3) and (3) treatment of a connection base surface: cleaning impurities such as dust, broken stones and the like at a connection base surface by using an air gun before hoisting the prefabricated part, uniformly spraying water on the base surface to keep a wet state, brushing a layer of interface agent on the surface of concrete, and then carrying out base grouting treatment by using grouting material, wherein the thickness of the base grouting material is 1.5cm, the base grouting material is fully paved along the long edge of the prefabricated part to form a rectangular shape, and the edge slightly protrudes by about 5 mm; before the prefabricated part is hoisted, wetting and brushing an interface agent on the connecting surface of the prefabricated part by using water, keeping the prefabricated part naturally and slowly fall to the connecting surface during hoisting, not shaking the prefabricated part, and after the prefabricated part is installed in place, carrying out one-time smearing on the peripheral seams to enhance the sealing effect;
(4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve, the grouting speed is controlled to be 1.0L/min, when the grout overflows from the grout outlet, a rubber plug is used for incompletely plugging the grout outlet, about 1/4-area gaps are reserved for exhausting gas, bubbles and holes in the sleeve are eliminated under the pressure action, and the grout outlet is completely plugged after the preset amount is poured; controlling the time within 45min from the completion of the preparation of the grouting material to the completion of the pouring; if slurry leaks from the connecting base surface in the pouring process, stopping pouring, caulking by using a PE sponge strip and polysulfide sealant according to the leakage condition, and continuing the grouting operation after the sealing is in place;
(5) and (3) maintaining after grouting: after grouting is finished, the enclosure facility is used for protecting the connecting area of the components, vibration construction load cannot exist in the adjacent two-layer building structure within 48h, and the temporary support and the enclosure facility are removed after the joint strength reaches 80% of design strength.
Example 3
A quantitative grouting construction process for a steel bar sleeve comprises the following steps:
(1) early preparation work: calculating the grouting amount required by one sleeve or one grouting operation according to the specifications of the grouting sleeve and the conveying pipe used for construction;
(2) preparing grouting material: mixing according to a mixing ratio provided by a manufacturer, and adopting warm water or auxiliary cooling measures when the natural temperature is lower than 5 ℃ or higher than 30 ℃; the stirring speed of the blades is kept at 130r/mi, the stirring speed is controlled from slow to fast, the speed is slowed down for about 90s when the fast stirring is finished, and the bubbles are reduced by the whole process of continuous stirring; the grouting pump is provided with a quantitative control module and a pressure gauge to realize quantitative grouting, and a grouting test is carried out on site to determine the optimal grouting amount;
(3) and (3) treatment of a connection base surface: cleaning impurities such as dust, broken stones and the like at a connection base surface by using an air gun before hoisting the prefabricated part, uniformly spraying water on the base surface to keep a wet state, brushing a layer of interface agent on the surface of concrete, and then carrying out base grouting treatment by using grouting material, wherein the thickness of the base grouting material is 1.2cm, the base grouting material is fully paved along the long edge of the prefabricated part to form a rectangular shape, and the edge slightly protrudes by about 4 mm; before the prefabricated part is hoisted, wetting and brushing an interface agent on the connecting surface of the prefabricated part by using water, keeping the prefabricated part naturally and slowly fall to the connecting surface during hoisting, not shaking the prefabricated part, and after the prefabricated part is installed in place, carrying out one-time smearing on the peripheral seams to enhance the sealing effect;
(4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve, the grouting speed is controlled to be 0.9L/min, when the grout overflows from the grout outlet, a rubber plug is used for incompletely plugging the grout outlet, about 1/4-area gaps are reserved for exhausting gas, bubbles and holes in the sleeve are eliminated under the pressure action, and the grout outlet is completely plugged after the preset amount is poured; controlling the time within 45min from the completion of the preparation of the grouting material to the completion of the pouring; if slurry leaks from the connecting base surface in the pouring process, stopping pouring, caulking by using a PE sponge strip and polysulfide sealant according to the leakage condition, and continuing the grouting operation after the sealing is in place;
(5) and (3) maintaining after grouting: after grouting is finished, the enclosure facility is used for protecting the connecting area of the components, vibration construction load cannot exist in the adjacent two-layer building structure within 48h, and the temporary support and the enclosure facility are removed after the joint strength reaches 80% of design strength.
The construction process adopts a quantitative sleeve filling mode, guarantees the quantity and compactness of the slurry in the sleeve in each grouting, and avoids the hidden sleeve quality trouble caused by leakage of bubbles, holes, slurry and other reasons in the sleeve.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The quantitative grouting construction process for the steel bar sleeve is characterized by comprising the following steps of: the method comprises the following steps:
(1) early preparation work: calculating the grouting amount required by one sleeve or one grouting operation according to the specifications of the grouting sleeve and the conveying pipe used for construction;
(2) preparing grouting material: mixing according to the mixture ratio provided by a manufacturer, and when the natural temperature is lower than 5 ℃, adopting warm water; when the natural temperature exceeds 30 ℃, an auxiliary cooling measure is adopted, the stirring speed is controlled from slow to fast, the speed is slowed down for 90s when the fast stirring is finished, and the bubbles are reduced by the whole continuous stirring; the grouting pump is provided with a quantitative control module and a pressure gauge to realize quantitative grouting, and a grouting test is carried out on site to determine the optimal grouting amount;
(3) and (3) treatment of a connection base surface: cleaning dust and gravels at the connection base surface by using an air gun before hoisting the prefabricated member, uniformly spraying water on the base surface to keep a wet state, brushing a layer of interface agent on the surface of concrete, and then carrying out base grouting treatment by using grouting material, wherein the thickness of the base grouting material is 1.0-1.5cm, the base grouting material is fully paved along the long edge of the member to form a rectangular shape, and the edge slightly protrudes by 3-5 mm; during hoisting, the component is kept to naturally and slowly fall to the connecting surface without shaking, and after the component is installed in place, one-time smearing and pressing are carried out on the peripheral seams to enhance the sealing effect;
(4) grouting operation and grouting amount control: when formal grouting is carried out, a grouting pump is used for grouting the grouting amount determined by the test from the lower opening of the sleeve, when grout overflows from the grout outlet, the grout outlet is incompletely blocked by a rubber plug, a 1/4-area gap is reserved to remove gas, bubbles and holes in the sleeve are eliminated under the action of pressure, and the grout outlet is completely blocked until a preset amount is poured; controlling the time within 45min from the completion of the preparation of the grouting material to the completion of the pouring;
(5) and (3) maintaining after grouting: after grouting is finished, the enclosure facility is used for protecting the connecting area of the components, vibration construction load cannot exist in the adjacent two-layer building structure within 48h, and the temporary support and the enclosure facility are removed after the joint strength reaches 80% of design strength.
2. The quantitative grouting construction process for the steel sleeve according to claim 1, wherein the grouting construction process comprises the following steps: the stirring speed of the blade stirred by the grouting material in the step (2) is kept at 110-150 r/min.
3. The quantitative grouting construction process for the steel sleeve according to claim 1, wherein the grouting construction process comprises the following steps: and (4) controlling the grouting speed in the pouring process in the step (4) to be 0.8-1.0L/min.
4. The quantitative grouting construction process for the steel sleeve according to claim 1, wherein the grouting construction process comprises the following steps: and (4) if slurry leaks from the connecting base surface in the filling process, suspending filling, caulking by using a PE sponge strip and polysulfide sealant according to the leakage condition, and continuing the grouting operation after the sealing is in place.
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| CN110700589A (en) * | 2019-10-22 | 2020-01-17 | 武汉合创炬盛科技有限公司 | Method for improving compactness of assembly type concrete grouting connection node |
| CN114250976B (en) * | 2022-01-19 | 2023-04-07 | 江苏方建质量鉴定检测有限公司 | Nondestructive slurry supplementing construction method for realizing slurry return at cavity bottom by using double-cavity compensator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726653A (en) * | 2014-01-08 | 2014-04-16 | 成军 | Full-prefabricated structure column steel sleeve cylinder grouting connecting construction method |
| CN108035493A (en) * | 2018-01-31 | 2018-05-15 | 合肥建工集团有限公司 | A kind of antidetonation assembles half grout sleeve of self-locking |
| CN108316565A (en) * | 2018-04-27 | 2018-07-24 | 中民筑友科技投资有限公司 | A kind of grout sleeve component |
| CN108590189A (en) * | 2018-05-30 | 2018-09-28 | 宁波普利凯建筑科技有限公司 | A kind of provisions for grouting and its construction method of prefabricated components |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100031607A1 (en) * | 2008-08-11 | 2010-02-11 | Oliva Michael G | Splice System for Fiber-Reinforced Polymer Rebars |
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- 2018-11-02 CN CN201811297910.5A patent/CN109469263B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726653A (en) * | 2014-01-08 | 2014-04-16 | 成军 | Full-prefabricated structure column steel sleeve cylinder grouting connecting construction method |
| CN108035493A (en) * | 2018-01-31 | 2018-05-15 | 合肥建工集团有限公司 | A kind of antidetonation assembles half grout sleeve of self-locking |
| CN108316565A (en) * | 2018-04-27 | 2018-07-24 | 中民筑友科技投资有限公司 | A kind of grout sleeve component |
| CN108590189A (en) * | 2018-05-30 | 2018-09-28 | 宁波普利凯建筑科技有限公司 | A kind of provisions for grouting and its construction method of prefabricated components |
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