CN101620049A - Method for compression test of concrete core sample - Google Patents
Method for compression test of concrete core sample Download PDFInfo
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- CN101620049A CN101620049A CN200910116679A CN200910116679A CN101620049A CN 101620049 A CN101620049 A CN 101620049A CN 200910116679 A CN200910116679 A CN 200910116679A CN 200910116679 A CN200910116679 A CN 200910116679A CN 101620049 A CN101620049 A CN 101620049A
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Abstract
The invention relates to a method for a compression test of a concrete core sample, which comprises the following steps: smoothing both ends of the concrete core sample, filling both ends of the concrete core sample, and putting the filled concrete core sample into pressing machines (1 and 4) for pressurization. The method is characterized in that the smoothed concrete core sample is directly put into the pressing machines, and both ends of the smoothed concrete core sample (3) are respectively provided with a curing rubber pad (2) for replacing the filling step. When used for a test for detecting the concrete compression strength in a structural solid, the method can ensure the end surface of the core sample is well combined with a cushion block of a tester, thereby enabling a tested strength value to be more approximate to a true value of the concrete strength, improving the work efficiency, and solving the problems of safety and environmental protection of a traditional filling method.
Description
Technical field
The present invention and a kind of method for compression test of concrete core sample that is used for.
Background technology
Boring core is one of common method of detection architecture solid concrete compressive strength.Core drilling method is to utilize special drilling machine, and direct core boring sampling from the structural concrete indoorly carries out compressive strength test through cut, polishing, mend after putting down, and comes the evaluation structure concrete quality according to concrete apparent mass of core and compressive strength.For guaranteeing core end face and testing machine cushion block good combination, existing rules " core drilling method detects concrete crushing strength technical regulation " (CECS03:2007) require test specimen the core end face to be mended flat with sulphide mastic or sand-cement slurry again after polishing.When adopting sulphide mastic to mend at ordinary times, there are four aspect problems: 1. need to purchase or process core and mend flat device, deep layer mineral oil or other release agents, Cosan, electric furnace, endure milk pot that sulphur uses etc.; 2. Cosan is being boiled in the process of sulphide mastic, Cosan burns easily and is difficult for putting out; 3. in the flat process of whole benefit, can produce harmful gases such as a large amount of SO2,, accumulate over a long period and still unavoidably health of human body is brought injury even carry out in draughty place or in fuming cupboard; 4. after sulphide mastic is put into and mended flat device, will harden in the very short time, personnel are difficult in the core end and mend out bed course smooth, full, that thickness is not only even but also thin when operation, are difficult for especially accomplishing when temperature is low.Simultaneously, be difficult to also guarantee that the core end face of mending after putting down is parallel.When adopting cement mortar screeding, there are two aspect problems: 1. need to prepare very big placement and mended between the maintenance of a core; 2. each the benefit at ordinary times, could mend another side after all will waiting a mortar of mending earlier that certain intensity has been arranged, to wait the two sides mortar strength just can do compressive strength test all will be the time then near the core concrete strength, be difficult to satisfy the engineering construction schedule requirement on time, also have a strong impact on the work efficiency and the benefit that detect unit.
Summary of the invention
Test block pad when the purpose of this invention is to provide a kind of levelling pad as the concrete core sample compressive strength test, be placed on sulphide mastic or sand-cement slurry benefit flatting method that the core end face is used to substitute existing core drilling method rules, thereby the intensity level that has guaranteed test is more near the concrete strength actual value, improve work efficiency, solved the safety and environmental protection problem of traditional benefit quadratic method.
The present invention has taked following technical scheme:
A kind of method for compression test of concrete core sample, comprise that the concrete core sample two ends polish the back step, flat step is mended at the concrete core sample two ends, mend flat concrete core sample and put into pressing machine applied voltage test step, it is characterized in that: a slaking rubber blanket is placed at the concrete core sample two ends that polish respectively, the slaking rubber blanket at concrete core sample and two ends thereof is directly put into pressing machine carry out pressure test.Promptly adopt and place a slaking rubber blanket at the concrete core sample two ends respectively and replace mending flat step.The slaking rubber blanket is shaped as the square of length of side 100mm, and thickness is 2mm ± 0.3mm.
The present invention has following beneficial effect: the test block pad when using this levelling pad as the concrete core sample compressive strength test, be placed on sulphide mastic or sand-cement slurry benefit flat bed that the core end face is used to substitute existing core drilling method rules, the upper and lower pressing plate of concrete sample and testing machine is had more fully to be contacted, the intensity level of test is more near the concrete strength actual value, can save direct costs such as mending flat device, electric furnace, the electricity charge, Cosan, improve work efficiency greatly, also helped the healthy of staff simultaneously.
Description of drawings
Fig. 1 is a work synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
As shown in Figure 1, the present invention is a kind of levelling pad (2), and it is made by slaking rubber, and thickness is 2mm ± 0.3mm, is cut into the square that the length of side is 100mm.
It is 1: 1 standard sample (3) that the concrete core sample that will fetch from structural solid is cut into ratio of height to diameter at cutting machine, polishes on stone mill, guarantee that two end faces of core are substantially parallel; Condition of work according to core is carried out maintenance to sample, requires for drying regime in the existing rules, and core should be indoor air dry 3 days; For dampness, should in the clear water of (20 ± 5) ℃, soak 40～48h.
Estimate the failing load of test specimen, selects suitable pressing machine, the expection destruction that requires test specimen is in 20%～80% scope of gamut; Then a slice levelling pad (2) is placed on the pressing machine lower platen (4), again the dirt at standard sample (3) two ends, water mark etc. are removed clean, be placed on (2) on the levelling pad, on standard sample (3), put a slice levelling pad (2) again, and make the center of standard sample and the centrally aligned of lower platen (4).After starting testing machine, allow top board (1) and standard sample (3) slowly, uniform contact, with the speed loading continuously and equably of per second 0.3～0.5MPa (strength grade is less than C25), 0.5～0.8MPa (strength grade is not less than C25), until destruction.
Claims (2)
1, a kind of method for compression test of concrete core sample, comprise the concrete core sample two ends are polished step, flat step is mended at the concrete core sample two ends, mend flat concrete core sample and put into pressing machine applied voltage test step, it is characterized in that: a slaking rubber blanket is placed at the concrete core sample two ends that polish respectively, the slaking rubber blanket at concrete core sample and two ends thereof is directly put into pressing machine carry out pressure test.
2, method for compression test of concrete core sample according to claim 1 is characterized in that: the slaking rubber blanket is shaped as the square of length of side 100mm, and thickness is 2mm ± 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910116679A CN101620049A (en) | 2009-04-30 | 2009-04-30 | Method for compression test of concrete core sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910116679A CN101620049A (en) | 2009-04-30 | 2009-04-30 | Method for compression test of concrete core sample |
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| Publication Number | Publication Date |
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| CN101620049A true CN101620049A (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910116679A Pending CN101620049A (en) | 2009-04-30 | 2009-04-30 | Method for compression test of concrete core sample |
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| CN (1) | CN101620049A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879266A (en) * | 2012-09-17 | 2013-01-16 | 山东省交通科学研究所 | Method for testing uniaxial compression elasticity modulus of inorganic binder stabilizing material |
| CN103900899A (en) * | 2014-03-27 | 2014-07-02 | 河南省水利科学研究院 | Test tamp and test method for measuring concrete tensile strength by adopting radial splitting method |
| CN104515704A (en) * | 2014-12-26 | 2015-04-15 | 北京市道路工程质量监督站 | Test method for semi-rigid base core sample compressive strength |
| CN106769446A (en) * | 2016-11-28 | 2017-05-31 | 衢州康平建设工程检测有限公司 | A kind of solid concrete compression strength ring platen press detector |
| CN109655330A (en) * | 2019-01-23 | 2019-04-19 | 中交公局厦门检测技术有限公司 | A kind of concrete test piece compressive strength test device and its application method |
| CN111220466A (en) * | 2019-11-28 | 2020-06-02 | 河南牛帕力学工程研究院 | Road compressive strength detection device and detection method |
| CN112033734A (en) * | 2020-09-16 | 2020-12-04 | 贵州工程应用技术学院 | High-precision in-service concrete strength rapid detection equipment |
-
2009
- 2009-04-30 CN CN200910116679A patent/CN101620049A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879266A (en) * | 2012-09-17 | 2013-01-16 | 山东省交通科学研究所 | Method for testing uniaxial compression elasticity modulus of inorganic binder stabilizing material |
| CN102879266B (en) * | 2012-09-17 | 2015-04-08 | 山东省交通科学研究所 | Method for testing uniaxial compression elasticity modulus of inorganic binder stabilizing material |
| CN103900899A (en) * | 2014-03-27 | 2014-07-02 | 河南省水利科学研究院 | Test tamp and test method for measuring concrete tensile strength by adopting radial splitting method |
| CN104515704A (en) * | 2014-12-26 | 2015-04-15 | 北京市道路工程质量监督站 | Test method for semi-rigid base core sample compressive strength |
| CN104515704B (en) * | 2014-12-26 | 2017-09-19 | 北京市道路工程质量监督站 | A kind of test method of semi-rigid type base core sample compression strength |
| CN106769446A (en) * | 2016-11-28 | 2017-05-31 | 衢州康平建设工程检测有限公司 | A kind of solid concrete compression strength ring platen press detector |
| CN106769446B (en) * | 2016-11-28 | 2019-02-22 | 衢州康平建设工程检测有限公司 | A kind of solid concrete compression strength ring platen press detector |
| CN109655330A (en) * | 2019-01-23 | 2019-04-19 | 中交公局厦门检测技术有限公司 | A kind of concrete test piece compressive strength test device and its application method |
| CN111220466A (en) * | 2019-11-28 | 2020-06-02 | 河南牛帕力学工程研究院 | Road compressive strength detection device and detection method |
| CN111220466B (en) * | 2019-11-28 | 2023-08-01 | 河南交院工程技术集团有限公司 | Road compressive strength detection device and detection method |
| CN112033734A (en) * | 2020-09-16 | 2020-12-04 | 贵州工程应用技术学院 | High-precision in-service concrete strength rapid detection equipment |
| CN112033734B (en) * | 2020-09-16 | 2023-08-18 | 贵州工程应用技术学院 | High-precision in-service concrete strength rapid detection equipment |
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Open date: 20100106 |