CN111411647A - Method for processing construction joint of wide and large section of building - Google Patents
Method for processing construction joint of wide and large section of building Download PDFInfo
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- CN111411647A CN111411647A CN202010335846.6A CN202010335846A CN111411647A CN 111411647 A CN111411647 A CN 111411647A CN 202010335846 A CN202010335846 A CN 202010335846A CN 111411647 A CN111411647 A CN 111411647A
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- construction joint
- roughening
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/26—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge
- B28D1/28—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by impact tools, e.g. by chisels or other tools having a cutting edge without cutting edge, e.g. chiseling machines
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- Mining & Mineral Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a construction joint treatment method for a wide and large section of a building, which comprises the following steps of pouring a raft foundation by using concrete, after the concrete of the raft foundation is initially set, performing primary chiseling treatment on a construction joint area by using a tool, after the concrete of the raft foundation is finally set, removing a loose and weak layer, cement mortar and mortar on the concrete surface and the steel bar surface of the construction joint area until concrete aggregate is exposed, performing primary chiseling treatment by using a high-pressure water gun, and finally performing secondary chiseling treatment on the edge of the construction joint area to ensure that the chiseling depth of the edge of the construction joint area is consistent with the chiseling depth of the inner area of the construction joint. The invention has the technical effects of simple process, easy implementation, high construction efficiency, reduced construction cost, shortened construction period, greatly improved construction quality of construction joint treatment, increased building safety and prolonged service life.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a method for processing a construction joint of a wide and large section of a building.
Background
The construction joint refers to a joint formed between the concrete poured before and after the concrete is poured in sections due to design requirements or construction requirements in the concrete pouring process. The construction joint is not a real existing joint, and only because the initial setting time of the first poured concrete is longer than the initial setting time, a joint surface exists between the first poured concrete and the later poured concrete, and the joint surface is called as the construction joint.
In modern industrial buildings, there are many reinforced concrete beams and columns with large cross sections, and the reinforcing steel bars of the reinforced concrete beams and columns with large cross sections are densely inserted and arranged, and the volume of the reinforced concrete beams and columns is particularly large. If the sectional areas of concrete beams, columns and foundation beams can reach 8 square meters to 10 square meters, stirrups of the foundation beams are pre-buried in the concrete raft foundation in advance, steel bars are dense, the treatment area of a one-time construction joint is required to be large, the construction joint is treated once by adopting a manual roughening method in the prior art, the working time is long, the roughening depth of the construction joint is not uniform, and the construction period and the construction quality are easily influenced. Therefore, a method suitable for treating the construction joints with large and wide sections of buildings, which has high construction efficiency and good treatment quality, is very needed.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the invention and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In this summary, a series of simplified form concepts are introduced that are simplifications of the prior art in this field, which will be described in further detail in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The invention provides a method for treating a construction joint with a wide and large section of a building.
In order to achieve the aim, the invention provides a method for treating a construction joint with a wide and large section of a building, which comprises the following steps:
s1, pouring concrete on the raft foundation;
s2, after the raft foundation concrete is initially set, performing primary chiseling treatment on the construction joint area by using a tool, wherein the galling depth is 3 mm-5 mm;
s3, after the raft foundation concrete is finally set, removing loose weak layers, cement mortar and mortar on the concrete surface and the steel bar surface of the construction joint area by using a high-pressure water gun until concrete aggregate is exposed, and performing primary chiseling treatment on the construction joint area by using the high-pressure water gun;
and S4, performing secondary scabbling treatment on the edge of the area of the construction joint to enable the scabbling depth of the edge of the area of the construction joint to be consistent with the scabbling depth of the area inside the construction joint.
Alternatively, in the step S2, the method of the first roughening process is at least one of a manual roughening method and a mechanical roughening method.
Optionally, in step S4, the method of performing a second roughening modification on the edge of the construction joint region further includes drawing or snapping a line along the construction joint region edge before the second roughening modification.
Optionally, the manual roughening method comprises roughening the concrete surface in the region of the construction joint with a reinforcing bar.
Alternatively, the mechanical roughening method includes roughening the concrete surface in the construction joint area with a roughening machine or a high-pressure water gun.
The invention has the technical effects that:
the method for treating the construction joint with the wide and large section of the building has the advantages of simple process, easy implementation, high construction efficiency, reduction of construction cost, shortening of construction period, great improvement of construction quality of treatment of the construction joint, and increase of safety and service life of the building.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a flow chart of an embodiment of a method for treating a construction joint for a wide and large cross section of a building according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a method for treating a construction joint with a large and wide cross section;
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure in the specification. The invention is capable of other embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the general spirit of the invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solutions of these exemplary embodiments to those skilled in the art.
It should be understood that the following construction joints refer to joints formed between the concrete poured in the first and the later stages during the concrete pouring process due to the design requirements or the construction requirements of the segmental pouring. The construction joint is not a real existing joint, and only because the initial setting time of the first poured concrete is longer than the initial setting time, a joint surface exists between the first poured concrete and the later poured concrete, and the joint surface is called as the construction joint.
As shown in fig. 1 and 2, a method for treating a construction joint with a large and wide cross section for a building according to a first embodiment of the present invention comprises the following steps:
s1, pouring concrete on the raft foundation;
s2, after the raft foundation concrete is initially set, performing primary chiseling treatment on the construction joint area by using a tool, wherein the galling depth is 3 mm-5 mm;
s3, after the raft foundation concrete is finally set, removing loose weak layers, cement mortar and mortar on the concrete surface and the steel bar surface of the construction joint area by using a high-pressure water gun until concrete aggregate is exposed, and performing primary chiseling treatment on the construction joint area by using the high-pressure water gun;
and S4, performing secondary scabbling treatment on the edge of the area of the construction joint to enable the scabbling depth of the edge of the area of the construction joint to be consistent with the scabbling depth of the area inside the construction joint.
In step S2, the initial setting of raft foundation concrete 1 refers to a state in which raft foundation concrete 1 begins to lose plasticity, and the final setting of raft foundation concrete 1 refers to a state in which raft foundation concrete 1 completely loses plasticity and begins to generate strength. Because the concrete does not lose plasticity completely in the initial setting state, the first roughening treatment on the construction joint area 11 by using a tool is relatively labor-saving, the main structure of the concrete is not damaged, when the concrete reaches the final setting state, the concrete loses plasticity and is cured completely, a loose and weak layer, cement mortar and mortar on the concrete surface and the reinforcement surface of the construction joint area 11 can be removed by using a high-pressure water gun, and the first roughening treatment is performed on the construction joint area 11 by using the high-pressure water gun, so that the roughening treatment on the construction joint area 11 is more uniform, and the roughening depth is consistent;
in this embodiment, the depth of the napping of the raft foundation concrete 1 construction joint area 11 is 3mm to 5mm, which is a technical parameter obtained in many practical engineering cases, and the quality of construction is affected by too small or too large napping depth.
In step S2, the method of the first roughening treatment may be one of an artificial roughening method and a mechanical roughening method, or a combination of the artificial roughening method and the mechanical roughening method according to the construction environment, wherein the artificial roughening method includes roughening the concrete surface of the construction joint region 11 with a steel bar, and the mechanical roughening method includes roughening the concrete surface of the construction joint region 11 with a roughening machine or a high-pressure water gun.
In step S4, the method for performing the second roughening trimming on the edge of the construction joint region 11 includes drawing lines or lines along the edge of the construction joint region 11 before the second roughening trimming, and drawing lines or lines along the edge of the construction joint region 11 to more accurately demarcate the construction joint region 11.
In step S4, the second roughening process is performed on the edge of the construction joint region 11 to make the roughening depth at the edge of the construction joint region 11 consistent with the roughening depth inside the construction joint region 11, so that the joint surface bonding between the concretes poured can be improved relatively closely.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The present invention has been described in detail with reference to the specific embodiments and examples, but these are not intended to limit the present invention. Many variations and modifications may be made by one of ordinary skill in the art without departing from the principles of the present invention, which should also be considered as within the scope of the present invention.
Claims (5)
1. A method for processing a construction joint with a wide and large cross section of a building is characterized by comprising the following steps:
s1, pouring concrete on the raft foundation;
s2, after the raft foundation concrete is initially set, roughening the construction joint area by using a tool, wherein the roughening depth is 3-5 mm;
s3, after the raft foundation concrete is finally set, removing loose weak layers, cement mortar and mortar on the concrete surface and the steel bar surface of the construction joint area by using a high-pressure water gun until concrete aggregate is exposed, and performing primary chiseling treatment on the construction joint area by using the high-pressure water gun;
and S4, performing secondary scabbling treatment on the edge of the area of the construction joint to enable the scabbling depth of the edge of the area of the construction joint to be consistent with the scabbling depth of the area inside the construction joint.
2. The method of claim 1, wherein in the step of S2, the method for roughening the construction joint region with the tool is at least one of a manual roughening method and a mechanical roughening method.
3. The method of claim 1, wherein in step S3, the method of performing a second roughening operation on the construction joint zone edge further comprises drawing a line or a bullet line along the construction joint zone edge before performing the second roughening operation.
4. The method of claim 2, wherein the manual roughening method comprises roughening the concrete surface of the construction joint area with a reinforcing bar.
5. The method of claim 2, wherein the mechanical roughening method comprises roughening the concrete surface of the construction joint area with a roughening machine or a high pressure water gun.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010335846.6A CN111411647A (en) | 2020-04-25 | 2020-04-25 | Method for processing construction joint of wide and large section of building |
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| CN202010335846.6A CN111411647A (en) | 2020-04-25 | 2020-04-25 | Method for processing construction joint of wide and large section of building |
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| CN111411647A true CN111411647A (en) | 2020-07-14 |
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| CN202010335846.6A Pending CN111411647A (en) | 2020-04-25 | 2020-04-25 | Method for processing construction joint of wide and large section of building |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033188A (en) * | 2021-11-08 | 2022-02-11 | 北京城建集团有限责任公司 | Construction process of concrete construction joint |
Citations (7)
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| JPH04222771A (en) * | 1990-12-25 | 1992-08-12 | Mitsubishi Materials Corp | Construction joint method of concrete |
| CN101054854A (en) * | 2007-04-30 | 2007-10-17 | 中铁大桥局集团第二工程有限公司 | Construction method of quick roughening of concrete |
| CN102373666A (en) * | 2011-09-19 | 2012-03-14 | 江苏省交通科学研究院股份有限公司 | Method for quickly roughening concrete by retarder flushing |
| CN104775530A (en) * | 2015-03-18 | 2015-07-15 | 同济大学 | Interface treatment method for horizontal construction seam of concrete |
| CN105421783A (en) * | 2015-12-18 | 2016-03-23 | 中交第二航务工程局有限公司 | wet joint face forming method |
| CN109624066A (en) * | 2018-12-18 | 2019-04-16 | 中交第航务工程局有限公司 | A kind of concrete component water rushes dabbing technique |
| CN110173052A (en) * | 2019-05-17 | 2019-08-27 | 武汉一冶建筑安装工程有限责任公司 | Construction joint construction method |
-
2020
- 2020-04-25 CN CN202010335846.6A patent/CN111411647A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04222771A (en) * | 1990-12-25 | 1992-08-12 | Mitsubishi Materials Corp | Construction joint method of concrete |
| CN101054854A (en) * | 2007-04-30 | 2007-10-17 | 中铁大桥局集团第二工程有限公司 | Construction method of quick roughening of concrete |
| CN102373666A (en) * | 2011-09-19 | 2012-03-14 | 江苏省交通科学研究院股份有限公司 | Method for quickly roughening concrete by retarder flushing |
| CN104775530A (en) * | 2015-03-18 | 2015-07-15 | 同济大学 | Interface treatment method for horizontal construction seam of concrete |
| CN105421783A (en) * | 2015-12-18 | 2016-03-23 | 中交第二航务工程局有限公司 | wet joint face forming method |
| CN109624066A (en) * | 2018-12-18 | 2019-04-16 | 中交第航务工程局有限公司 | A kind of concrete component water rushes dabbing technique |
| CN110173052A (en) * | 2019-05-17 | 2019-08-27 | 武汉一冶建筑安装工程有限责任公司 | Construction joint construction method |
Non-Patent Citations (2)
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| 刘丰林: "超大型水池施工缝的设置及施工处理", 建筑技术, vol. 33, no. 2002, pages 496 - 497 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033188A (en) * | 2021-11-08 | 2022-02-11 | 北京城建集团有限责任公司 | Construction process of concrete construction joint |
| CN114033188B (en) * | 2021-11-08 | 2022-06-21 | 北京城建集团有限责任公司 | Construction process of concrete construction joint |
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