CN101968429A - Experimental method for impermeability of bond between new and old concretes - Google Patents
Experimental method for impermeability of bond between new and old concretes Download PDFInfo
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- CN101968429A CN101968429A CN 201010294776 CN201010294776A CN101968429A CN 101968429 A CN101968429 A CN 101968429A CN 201010294776 CN201010294776 CN 201010294776 CN 201010294776 A CN201010294776 A CN 201010294776A CN 101968429 A CN101968429 A CN 101968429A
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- impermeability
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Abstract
The invention discloses a preparation method of an experimental specimen for impermeability of bond between new and old concretes, belonging to the technical field of impermeability tests of concrete. The method of the invention comprises the following steps: cutting a plastic pipe with the diameter of 8-12cm into a plastic pipe with the length of 8-12cm; spirally wrapping a nylon rope with the diameter of 2-4mm on the cut plastic pipe; putting the plastic pipe on which the nylon rope is wrapped into a forming specimen mould; pouring concrete; pulling out the nylon rope after 24 hours, taking out the plastic pipe, and removing the mould; curing the peripheral concrete for 28 days; then taking out the concrete for carrying out interface treatment; putting the concrete into a pouring specimen mould after treatment; pouring new concrete into the middle hole of the old concrete; removing the mould after 24 hours; and putting the test specimen into a curing chamber for curing for 28 days, and then carrying out the impermeability experiment. The invention has simple process and convenient operation. The new and old concrete have good bonding property, the test specimen and the impermeability specimen mould have good edge sealing property, and the new concrete is poured under the condition that the old concrete is not damaged, thereby preventing the influence of a crack generated by splitting the old concrete on the experimental result.
Description
Technical field
The present invention relates to concrete impervious experiment, especially the impervious experimental technique of Mechanics Performance of Adherence of New belongs to the concrete impermeability test technical field.
Background technology
The impervious experimental technique of existing New-old concrete is that the old concrete test block is rived, the half block test block is put in the moulding die trial, build new concrete, wait to reach age curing period, the Mechanics Performance of Adherence of New test block is pressed onto in the die trial of impermeability test machine, but this method is because the test block of half block old concrete is put shakiness in the moulding die trial, can not reason such as be close to fully with die trial causes Mechanics Performance of Adherence of New test block edge sealing in the die trial of impermeability test machine bad, often the permeable phenomenon in edge taking place and cause the failure of an experiment, causes unnecessary manpower, material resources and waste of time.So be badly in need of the impervious experimental technique of a kind of Mechanics Performance of Adherence of New of good airproof performance.
Summary of the invention
The objective of the invention is deficiency, disclose a kind of impervious experimental technique of Mechanics Performance of Adherence of New of good airproof performance at the prior art existence.
The objective of the invention is to be achieved through the following technical solutions, the impervious experimental technique of Mechanics Performance of Adherence of New is characterized in that may further comprise the steps:
(1) with diameter be the plastic tube of 8-12cm to be cut into length be the 18-22cm plastic tube, intercept 6 altogether, be that the nylon rope of 2-4mm is spirally wound on the plastic tube that cuts with diameter;
(2) plastic tube that will twine nylon rope is put into and is built in the die trial, builds old concrete, after 24 hours nylon rope is pulled, and takes out plastic tube, and form removal is taken out after the peripheral old concrete maintenance to 28 day;
(3) old concrete after the maintenance is carried out interface processing, old concrete after the interface processing packed into build in the die trial, in the middle hole of old concrete, build novel concrete, form removal after 24 hours, test block is put into the fog room maintenance after 28 days, obtain the impervious experiment test specimen of Mechanics Performance of Adherence of New;
(4) the impervious experiment test specimen of the Mechanics Performance of Adherence of New that makes is pressed in the die trial of impermeability test machine, carries out impermeability test.
Described concrete is normal concrete or modified concrete.
Technology of the present invention is simple, and is easy to operate.The invention has the beneficial effects as follows: (1) builds novel concrete under the situation that old concrete is not damaged, and the crack of avoiding occurring in the old concrete after the old concrete splitting exerts an influence to experimental result; (2) nylon rope that twines outside plastic tube makes the better coarse bonding that more helps New-old concrete of new-to-old concrete interface; (3) test block and impervious die trial edge are more prone to sealing; (4) nylon rope takes spiral way to be wrapped on the Plastic Drum, is very easy to when pulling nylon rope.
Description of drawings
Fig. 1 is a Mechanics Performance of Adherence of New test block schematic top plan view;
Fig. 2 is the cross-sectional schematic of the A-A direction of Fig. 1;
1-old concrete, 2-novel concrete among the figure.
Embodiment
With diameter is that the plastic tube of 8cm is cut into the plastic tube that length is 18cm, intercepts 6 altogether, is that the nylon rope of 2mm is spirally wound on the plastic tube that cuts with diameter.The plastic tube that twines nylon rope put into build in the die trial, build old concrete, after 24 hours nylon rope is pulled, take out plastic tube, form removal is taken out after the peripheral old concrete maintenance to 28 day.The old concrete that takes out is carried out interface processing, old concrete after the interface processing packed into build in the die trial, in the middle hole of old concrete, build novel concrete, form removal after 24 hours, test block was put into the fog room maintenance after 28 days, make the impervious experiment test specimen of Mechanics Performance of Adherence of New, the impervious experiment test specimen of the Mechanics Performance of Adherence of New that makes is pressed in the die trial of impermeability test machine, carry out impermeability test.
With diameter is that the plastic tube of 12cm is cut into the plastic tube that length is 20cm, intercepts 6 altogether, is that the nylon rope of 4mm is spirally wound on the plastic tube that cuts with diameter.The plastic tube that twines nylon rope put into build in the die trial, build old concrete, after 24 hours nylon rope is pulled, take out plastic tube, form removal is taken out after the peripheral old concrete maintenance to 28 day.The old concrete that takes out is carried out interface processing, old concrete after the interface processing packed into build in the die trial, in the middle hole of old concrete, build novel concrete, form removal after 24 hours, test block was put into the fog room maintenance after 28 days, make the impervious experiment test specimen of Mechanics Performance of Adherence of New, the impervious experiment test specimen of the Mechanics Performance of Adherence of New that makes is pressed in the die trial of impermeability test machine, carry out impermeability test.
Claims (2)
1. the impervious experimental technique of Mechanics Performance of Adherence of New is characterized in that may further comprise the steps:
(1) with diameter be the plastic tube of 8-12cm to be cut into length be the 18-22cm plastic tube, intercept 6 altogether, be that the nylon rope of 2-4mm is spirally wound on the plastic tube that cuts with diameter;
(2) plastic tube that will twine nylon rope is put in the moulding die trial, builds old concrete, after 24 hours nylon rope is pulled, and takes out plastic tube, and form removal is taken out after the peripheral old concrete maintenance to 28 day;
(3) old concrete after the maintenance is carried out interface processing, old concrete after the interface processing packed into build in the die trial, in the middle hole of old concrete, build novel concrete, form removal after 24 hours, test block is put into the fog room maintenance after 28 days, obtain the impervious experiment test specimen of Mechanics Performance of Adherence of New;
(4) the impervious experiment test specimen of the Mechanics Performance of Adherence of New that makes is pressed in the die trial of impermeability test machine, carries out impermeability test.
2. the impervious experimental technique of Mechanics Performance of Adherence of New according to claim 1 is characterized in that described concrete is normal concrete or modified concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102947760A CN101968429B (en) | 2010-09-28 | 2010-09-28 | Experimental method for impermeability of bond between new and old concretes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102947760A CN101968429B (en) | 2010-09-28 | 2010-09-28 | Experimental method for impermeability of bond between new and old concretes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101968429A true CN101968429A (en) | 2011-02-09 |
| CN101968429B CN101968429B (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102947760A Active CN101968429B (en) | 2010-09-28 | 2010-09-28 | Experimental method for impermeability of bond between new and old concretes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910970A (en) * | 2016-04-11 | 2016-08-31 | 黄显彬 | Concrete impermeability test method and test apparatus thereof |
| CN107515074A (en) * | 2017-08-03 | 2017-12-26 | 立方通达实业（天津）有限公司 | Compressive sealed property detection device and detection method after a kind of repairing concrete crack |
| CN108982183A (en) * | 2018-08-07 | 2018-12-11 | 宁波联城住工科技有限公司 | A kind of preparation method and test method, mold of concrete sample |
| CN117589656A (en) * | 2024-01-18 | 2024-02-23 | 安徽建工三建集团有限公司 | Underground engineering concrete quality inspection device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004747A1 (en) * | 2000-07-10 | 2002-01-17 | The Regents Of The University Of Michigan | Concrete construction employing the use of a ductile strip |
| CN101149368A (en) * | 2007-11-13 | 2008-03-26 | 贵州中建建筑科研设计院 | Method for detecting solid concrete impermeability by core boring sampling |
| CN101435192A (en) * | 2008-12-02 | 2009-05-20 | 中国葛洲坝集团股份有限公司 | New and old concrete combining construction method |
-
2010
- 2010-09-28 CN CN2010102947760A patent/CN101968429B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002004747A1 (en) * | 2000-07-10 | 2002-01-17 | The Regents Of The University Of Michigan | Concrete construction employing the use of a ductile strip |
| CN101149368A (en) * | 2007-11-13 | 2008-03-26 | 贵州中建建筑科研设计院 | Method for detecting solid concrete impermeability by core boring sampling |
| CN101435192A (en) * | 2008-12-02 | 2009-05-20 | 中国葛洲坝集团股份有限公司 | New and old concrete combining construction method |
Non-Patent Citations (1)
| Title |
|---|
| 《水利学报》 20050531 李平先等 《新老混凝土粘结面渗透性能试验研究》 第602-607页 1-2 第36卷, 第5期 2 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910970A (en) * | 2016-04-11 | 2016-08-31 | 黄显彬 | Concrete impermeability test method and test apparatus thereof |
| CN107515074A (en) * | 2017-08-03 | 2017-12-26 | 立方通达实业（天津）有限公司 | Compressive sealed property detection device and detection method after a kind of repairing concrete crack |
| CN108982183A (en) * | 2018-08-07 | 2018-12-11 | 宁波联城住工科技有限公司 | A kind of preparation method and test method, mold of concrete sample |
| CN117589656A (en) * | 2024-01-18 | 2024-02-23 | 安徽建工三建集团有限公司 | Underground engineering concrete quality inspection device |
| CN117589656B (en) * | 2024-01-18 | 2024-03-19 | 安徽建工三建集团有限公司 | Underground engineering concrete quality inspection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101968429B (en) | 2011-12-21 |
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