CN209927553U - A concrete sample for flexible stagnant water material leakproofness test detects - Google Patents
A concrete sample for flexible stagnant water material leakproofness test detects Download PDFInfo
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- CN209927553U CN209927553U CN201822056302.7U CN201822056302U CN209927553U CN 209927553 U CN209927553 U CN 209927553U CN 201822056302 U CN201822056302 U CN 201822056302U CN 209927553 U CN209927553 U CN 209927553U
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Abstract
The utility model relates to a concrete sample for flexible sealing material leakproofness test detects, this test piece structure includes simulation structure seam district, the stone on concrete top layer and fills the district, reserves the water injection and suppress hole and flexible sealing material and fill out and inlay the district, can carry out the prefabrication processing and the production of concrete sample by the mould. The utility model has simple structure, convenient use, can carry out factory prefabrication production, and has the advantages of portability, high efficiency, high test success rate and the like; the flexible water-stopping material testing device can be widely applied to field test and detection work in the operation of flexible water-stopping materials in civil engineering and hydraulic engineering.
Description
Technical Field
The utility model relates to a precast concrete test piece, which is mainly applied to the construction site of hydraulic engineering and used for performing water tightness test and detection work after the flexible water stop material in a structural joint is filled and embedded; the method is mainly used for testing and detecting the water sealing performance between the flexible water stopping material (such as polyurethane, polysulfide, acrylic acid, silicone sealant and the like) of the hydraulic structure and the interface of the concrete structure, so that objective test and detection work can be carried out on the bonding performance, the water sealing performance and the water stopping effect of the flexible water stopping material and the concrete structure under the field construction condition, and comprehensive evaluation is formed.
Background
At the end of the last century, various types of polymeric flexible sealants (e.g., polyurethane, polysulfide, acrylic, silicone sealants, etc.) have found widespread use in municipal engineering. With the application and development of materials, the polymer flexible sealing water-stop material with excellent seepage-proofing property, expansion deformation capability and good adhesion with a concrete interface is taken as a novel hydraulic seepage-proofing material and gradually accepted, popularized and applied in a large amount in the industry in hydraulic engineering.
In water conservancy projects, a polymer flexible sealing water-stopping material serving as an anti-seepage material is mainly embedded in a concrete structure seam with a water-stopping requirement and used for connecting a concrete anti-seepage structure to form an integral concrete anti-seepage system. The high polymer flexible sealing water stop body material has excellent water sealing performance, good low-temperature flexibility, wide use temperature range (-40 ℃ -90 ℃), oil resistance, damp and heat resistance, good bonding force to metal and nonmetal (such as concrete, glass, wood and the like), and is a normal-temperature (or heating reaction) curing type elastic sealing water stop material.
In the building material standard and application specification, the tests of the adhesion, the fixed-extension adhesion, the water tightness and the like of the high-molecular flexible sealing water-stopping material are subjected to normative requirements and explanations. However, under the conditions of construction level and later environmental influence in actual engineering, the bonding performance, water sealing performance parameters and indexes between the water-stopping material and a concrete structure are different from those of indoor test data; in order to detect and evaluate the material performance and construction quality of a product on a construction site, the water-stopping material is often subjected to a site test in combination with the construction site. However, in the current engineering field, the detection test work for the adhesion of the flexible water-stop material and the water sealing performance thereof has the phenomena of complex test procedures, complex test steps, low test success rate and the like. This utility model research combines the engineering construction of flexible stagnant water material among the hydraulic engineering and witnessed inspections process, proposes one kind and is applied to the job site and carries out the precast concrete test piece that water tightness is experimental to flexible stagnant water material to replace and perfect and carry out witnessed inspections test process to flexible stagnant water material among the existing engineering, accomplish engineering witnessed inspections work, accurately acquire experimental detection data and carry out basic research and application work for flexible stagnant water material is quick, high-efficient.
Disclosure of Invention
The utility model aims at providing a precast concrete sample, which can simultaneously complete the filling and embedding construction operation of the precast concrete sample in the site construction process of the flexible water-stop material; storing the concrete sample in an engineering construction site to ensure the same environmental conditions as the engineering site; after the flexible water stopping material on the engineering site is solidified for a certain age, the prefabricated concrete test piece and the flexible water stopping material embedded in the prefabricated concrete test piece are subjected to test detection content of site (or laboratory) conditions so as to know and master the bonding performance of the flexible water stopping material after the construction link is completed, and the water sealing performance indexes and parameters of the flexible water stopping material, and the performance of the flexible water stopping material product and the construction quality of the flexible water stopping material product are objectively and practically known and evaluated.
The utility model discloses the following realization of accessible:
the test piece can be prefabricated and processed and produced by a mould, and consists of a simulation structure seam area, a stone filling area, a reserved water injection pressing hole, a flexible water stop material filling and embedding area and the like.
The precast concrete test piece is of a cuboid precast concrete structure, a structural joint is arranged in the middle of the top of the precast concrete test piece, the width of the structural joint is 20-30 mm, the depth of the structural joint is not less than 30mm, the structural joint is used for simulating an engineering structural joint, and a flexible water-stopping material filling and embedding area is formed in the joint;
a stone filling area is arranged at the bottom of the middle of the structural joint and is of a groove structure, the width of the groove structure is equal to the width of the structural joint, the length of the groove structure is 60mm, the depth of the groove structure is 40mm, stones are filled inside the groove structure, and the filled stones and the inner holes of the filled stones are water injection and pressure increase areas;
and a round hole with the diameter of about 10mm is arranged on the side surface of the concrete sample, is communicated with the stone filling area and is used for arranging a water injection pressurizing needle head.
The data obtained by the test piece for construction site test detection is more appropriate and real with the performance index of the flexible water stop material after site engineering construction, the test piece has simple structure and convenient use, the site detection efficiency of the flexible water stop sealing material can be effectively improved, and the test detection success rate is high; the development of the test piece has certain reference and guidance values for the knowledge and engineering application of the flexible water-stopping material, and can provide basic conditions and powerful guarantee for the on-site detection work of the standardized and normalized flexible water-stopping material.
[ description of the drawings ]
The specific structure of the utility model is given by the following drawings:
FIG. 1 is a schematic diagram of a three-dimensional structure of a precast concrete sample applied to a construction site for performing a sealing test on a flexible water stopping material; the whole test piece is of a prefabricated concrete structure and consists of a simulation structure seam, a stone filling area, a reserved water injection pressing hole, a flexible water stop material filling and embedding area and the like;
FIG. 2 is a schematic diagram of the longitudinal section structure of the precast concrete sample along the long axis direction (length of 120 mm);
FIG. 3 is a schematic diagram of the arrangement of the longitudinal section structure of the precast concrete sample along the short axis direction (width of 80 mm);
in the legend, ① is a prefabricated concrete structure test piece, ② is a simulated structure seam area, ③ flexible water-stop materials are filled and embedded inside, ④ is a stone filling area, ⑤ is a reserved water injection pressing hole, and the simulated structure seam, the stone filling area, the reserved water injection pressing hole, the flexible water-stop material filling area and the like in the prefabricated concrete test piece are marked in the figure, and the concrete content of the figure is shown in the figure.
[ detailed description ] embodiments
The specific implementation mode is as follows: the utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
Example (b): as shown in fig. 1, the prefabricated concrete test piece (see fig. 1) can be produced in a factory by manufacturing and processing a test piece mold; in the construction process of a structure joint (such as a channel) of hydraulic engineering, flexible water-stop material filling and embedding construction is carried out in the structure joint, and meanwhile, flexible water-stop material filling and embedding operation under construction site conditions is carried out on a prefabricated concrete test piece (shown in figure 1). The concrete method comprises the following steps of firstly installing a water injection pressure needle into a reserved water injection pressurizing needle hole position (a gap between the water injection needle and the reserved water injection hole can be filled with the flexible water-stop material for sealing), selecting small stones with the particle size of 2-5 mm, filling the small stones in a stone filling area of the concrete test piece, wherein the stone filling is uniform and compact, and the contact surface of the small stones and the top water-stop material is required to be smooth; the flexible water stopping material is filled and embedded in the simulated structure joint area of the precast concrete test piece, the thickness of the filled and embedded flexible water stopping material can be consistent with or slightly thinner than that of the water stopping material in the channel structure joint (the thinnest part of the test piece in the figure can be 10mm, and can be determined according to factors such as engineering requirements, test water head, concrete strength and the like, but the portable condition is met and the filling range of the precast test piece is not exceeded), and the length can be as long as that of the precast concrete test piece (such as 120mm in the figure) or slightly shorter than that of the precast concrete test piece. After the installation of the water injection pressurizing needle head of the test piece and the filling and embedding construction of the flexible water stop material are finished, the test piece is retained in a channel engineering construction site, so that the test piece and the flexible water stop material of hydraulic engineering (such as a channel) have the same construction conditions and later engineering environment; after the flexible water-stopping material is cured for a certain age and has certain strength, performing a water injection pressure detection test on a precast concrete test piece on the engineering site according to a material detection scheme and time arrangement; the test result of the test piece has certain representativeness to the performance and development of the flexible water-stopping material in the structural joint under the same construction condition and engineering environment.
Above technical characteristics are only the embodiment of the utility model, unnecessary technical characteristics can be increased or decreased according to actual need, satisfy the needs of different situations.
Claims (1)
1. The utility model provides a concrete test piece for experimental detection of flexibility stagnant water material leakproofness, this test piece includes that the simulation structure on precast concrete test piece top layer seam district, stone fill the district, reserves the water injection and suppresses hole and flexible stagnant water material and fills out and inlay the district, can carry out concrete prefabrication processing and production by the mould, its characterized in that: the slot joint on the concrete test piece surface layer is used for simulating a concrete structure slot, a stone filling area in the concrete test piece is a water injection pressure cavity area, a reserved water injection pressurizing hole is an orifice of an external pressure device, and the flexible water stopping material filling area is the width and the depth of the slot joint on the concrete test piece surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056302.7U CN209927553U (en) | 2018-12-10 | 2018-12-10 | A concrete sample for flexible stagnant water material leakproofness test detects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056302.7U CN209927553U (en) | 2018-12-10 | 2018-12-10 | A concrete sample for flexible stagnant water material leakproofness test detects |
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| CN209927553U true CN209927553U (en) | 2020-01-10 |
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| CN201822056302.7U Expired - Fee Related CN209927553U (en) | 2018-12-10 | 2018-12-10 | A concrete sample for flexible stagnant water material leakproofness test detects |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111487109A (en) * | 2020-06-09 | 2020-08-04 | 中国科学院南京土壤研究所 | Method for preparing whole specimen of soil with high water content and strong expansibility |
| CN111487108A (en) * | 2020-06-09 | 2020-08-04 | 中国科学院南京土壤研究所 | Method for preparing whole section specimen of peat soil |
| EP4060312A4 (en) * | 2020-02-10 | 2023-01-25 | Dalian Medical University | Special vertical embedding box for fault plasticization |
-
2018
- 2018-12-10 CN CN201822056302.7U patent/CN209927553U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4060312A4 (en) * | 2020-02-10 | 2023-01-25 | Dalian Medical University | Special vertical embedding box for fault plasticization |
| CN111487109A (en) * | 2020-06-09 | 2020-08-04 | 中国科学院南京土壤研究所 | Method for preparing whole specimen of soil with high water content and strong expansibility |
| CN111487108A (en) * | 2020-06-09 | 2020-08-04 | 中国科学院南京土壤研究所 | Method for preparing whole section specimen of peat soil |
| CN111487109B (en) * | 2020-06-09 | 2021-04-27 | 中国科学院南京土壤研究所 | Method for preparing whole specimen of soil with high water content and strong expansibility |
| CN111487108B (en) * | 2020-06-09 | 2021-04-27 | 中国科学院南京土壤研究所 | Method for preparing whole section specimen of peat soil |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 Termination date: 20201210 |
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| CF01 | Termination of patent right due to non-payment of annual fee |