CN101435816B - A test method and test device for cement concrete resistance to sulfate corrosion - Google Patents
A test method and test device for cement concrete resistance to sulfate corrosion Download PDFInfo
- Publication number
- CN101435816B CN101435816B CN2008102333210A CN200810233321A CN101435816B CN 101435816 B CN101435816 B CN 101435816B CN 2008102333210 A CN2008102333210 A CN 2008102333210A CN 200810233321 A CN200810233321 A CN 200810233321A CN 101435816 B CN101435816 B CN 101435816B
- Authority
- CN
- China
- Prior art keywords
- test
- concrete
- sulfate
- test specimen
- cement concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 220
- 239000004567 concrete Substances 0.000 title claims abstract description 105
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 title claims abstract description 47
- 239000004568 cement Substances 0.000 title claims abstract description 39
- 238000010998 test method Methods 0.000 title claims abstract description 24
- 230000007797 corrosion Effects 0.000 title claims abstract description 16
- 238000005260 corrosion Methods 0.000 title claims abstract description 16
- 230000008859 change Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000009792 diffusion process Methods 0.000 claims abstract description 4
- 238000005516 engineering process Methods 0.000 claims abstract description 3
- 230000036571 hydration Effects 0.000 claims abstract 2
- 238000006703 hydration reaction Methods 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000000565 sealant Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims 1
- 230000004888 barrier function Effects 0.000 claims 1
- 239000012047 saturated solution Substances 0.000 claims 1
- 229910052938 sodium sulfate Inorganic materials 0.000 claims 1
- 235000011152 sodium sulphate Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 7
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 238000005192 partition Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005303 weighing Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
一种水泥混凝土抗硫酸盐腐蚀的测试方法及装置，它是利用电渗脉冲技术原理，促进硫酸根离子向水泥混凝土内部的扩散，快速检测水泥混凝土抗硫酸盐腐蚀性能；混凝土抗硫酸盐腐蚀能力大小以混凝土的质量变化与强度损失值进行评判。本测试方法将混凝土试件置于硫酸盐环境中，根据硫酸根离子在脉冲电压作用下，与混凝土试件水化产物的反应情况，快速判断混凝土抗硫酸盐腐蚀性能。本测试方法测试强度小，周期短；整个测试过程只需7天即可完成，测试结果也较准确，能够真实的反映混凝土在硫酸盐环境中被腐蚀的状况。
A test method and device for sulfate corrosion resistance of cement concrete, which uses the principle of electroosmotic pulse technology to promote the diffusion of sulfate ions to the interior of cement concrete, and quickly detect the sulfate corrosion resistance of cement concrete; the sulfate corrosion resistance of concrete The size is judged by the quality change and strength loss value of concrete. In this test method, the concrete specimen is placed in a sulfate environment, and the sulfate corrosion resistance of concrete is quickly judged according to the reaction of sulfate ions with the hydration product of the concrete specimen under the action of pulse voltage. This test method has low test intensity and short cycle; the whole test process can be completed in only 7 days, and the test results are relatively accurate, which can truly reflect the corrosion of concrete in the sulfate environment.
Description
Technical field
The present invention relates to the building materials field tests, especially a kind of method of testing and proving installation of test water cement concrete anti-sulphates corrosive.
Background technology
Cement concrete is the structured material that consumption is maximum in the world, usable range is the widest.Cement concrete is subject to the chemical erosion of the objectionable constituent in air, underground water and the soil owing to inner structure and hydrated product, causes performances such as its intensity, cubic deformation and serviceable life to descend.In many chemical erosion types, sulphate corrosion is a key factor that influences concrete durability.The sulfate ion that all contains in soil, the underground water; Penetrate into inside concrete and react with the hydrated cementitious product; Produce concrete destructions such as expanding, ftracture, peel off, make structural concrete at the design service life that does not reach its expection with regard to too early destroying.Therefore, the concrete anti-sulphates corrosive method of testing that research and development are suitable is to guarantee concrete durability.
The test of current concrete sulfate resistance does not have standard method, as the sulfate resistance test of the cement of Binder Materials standard method is arranged.So the method for cement sulfate resistance test is used in the test of concrete sulfate resistance sometimes.China adopts following two kinds of methods to carry out the sulfate resistance test at present: a kind of is GB749-65 " cement resisting erosion of sulfate method of testing ", and another kind is GB2420-80 " a cement resisting erosion of sulfate method of testing (express method) ".GB749-65 adopts the little mortar specimen (cement-sand ratio is 1: 3.5) of 10mm * 10mm * 30mm, and GB2420-80 adopts the little mortar specimen (cement-sand ratio is 1: 3.5) of 10mm * 10mm * 60mm.Facts have proved, adopt this class methods test result discreteness very big.
In addition, the method for using always in the concrete research also has 80 ℃ of metabisulfite solution drying and watering cycle action methods.This method is concrete to be soaked a period of time (being generally 12 hours) in 80 ℃ of metabisulfite solutions, takes out the back and in 80 ℃ of baking ovens, dries, and soaks again, so circulates after 50 times, tests concrete loss of strength and mass loss.This method significant disadvantages is that tester's labour intensity is big, and key a bit is simultaneously, after 50 drying and watering cycles; Though concrete intensity has loss; But as far as some concrete, its not anti-reflection of quality increases, and can't reflect the situation that concrete is corroded in condition of sulfate really.Crucial is, even there is not condition of sulfate, the thermal shock effect that concrete drying and watering cycle causes under 80 ℃ of conditions also can cause concrete destruction, thereby is difficult to really judge concrete anti-sulphates corrosive ability.
In view of above method defective separately, be necessary to develop a kind of new anti-sulphates corrosive method.
Summary of the invention
To the above-mentioned deficiency that prior art exists, the purpose of this invention is to provide the method for testing that a kind of test result is directed against the cement concrete anti-sulphates corrosive comparatively accurately, easily and fast.
The objective of the invention is to realize like this: a kind of method of testing of cement concrete anti-sulphates corrosive; It is characterized in that; Utilize electric osmose pulse work principle; Promote sulfate ion to the inner diffusion of cement concrete, promote the reaction of sulfate ion and cement concrete hydrated product, fast detecting cement concrete anti-sulphates corrosive performance; Concrete anti-sulphates corrosive ability size changes with the loss of strength value with quality of concrete to be passed judgment on.
Method of testing of the present invention, concrete steps comprise:
1) setup test sample: the water intaking cement concrete is tested the cube that is shaped as of test specimen as the test test specimen;
2) the test test specimen removing surface of step 1) preparation is clean, take by weighing the initial mass of testing test specimen;
3) with step 2) test test specimen after handling places the suitable test box of the length of side middle part of width and test test specimen, and the test box space at test test specimen two ends is cut off, and an opposing sidewalls of test test specimen seals with the applying of test box inwall and by sealant; Two battery lead plates that will connect impulse voltage generator then respectively in advance are fixed on another opposing sidewalls of test test specimen; On the top of the two relative side of testing test specimen two partitions are installed respectively again, the vertical side of partitions seals with test outer, top, test specimen side respectively, and the partitions two ends seal respectively and between the test box inwall;
4) then, in the cavity at the test box two ends of separating, add sulfate liquor, keep the interior sulfate liquor liquid level of test anode tap case to be not less than the upper surface of test test specimen by the test test specimen;
5) power supply of make pulse voltage generator is tested again; Pulse voltage is 5-30V, and frequency is 5-30 second, test duration 7-10 days (test duration reduces and prolongation relatively with concrete water-cement ratio);
6) measure test result: test after accomplishing is taken off the concrete test test specimen, and surface treatment is clean, takes by weighing the quality after the test, and surveys the compressive strength of test test specimen;
7) test result is passed judgment on: with step 2) quality is compared after the test that obtains in the initial mass that takes by weighing and the step 6), calculates the mass change of concrete test test specimen test front and back; And will test the compressive strength of test specimen and compare with the compressive strength of the reference piece in maintenance under the standard curing condition to the identical length of time, calculating under the pulse voltage effect, sulfate liquor is to the reduction value of strength of concrete specimen; Concrete test test specimen anti-sulphates corrosive ability size changes with the loss of strength value with quality of concrete to be passed judgment on.
Compared with prior art, the present invention has following advantage:
(1) this method of testing places condition of sulfate with the concrete test test specimen, under the pulse voltage effect, with the response situation of concrete sample hydrated product, judges concrete anti-sulphates corrosive performance fast according to sulfate ion;
(2) this method of testing test intensity is little, and the cycle is short; Whole test process only needed to accomplish in 7-10 days, and test result is also more accurate, can reflect the situation that concrete is corroded in condition of sulfate really.
Description of drawings
Fig. 1 is the proving installation structural representation (overlooking) that adopts cement concrete anti-sulphates corrosive method of testing of the present invention;
Fig. 2 is the proving installation structural representation (main looking) that adopts cement concrete anti-sulphates corrosive method of testing of the present invention;
Fig. 3 is that institute adds pulse voltage waveform figure in the cement concrete anti-sulphates corrosive method of testing test of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
The method of testing of the cement concrete anti-sulphates corrosive that the present invention relates to; Be to utilize electric osmose pulse work principle; Promote sulfate ion to the cement concrete internal divergence; Promote the reaction with the cement concrete hydrated product, thereby reach the purpose of fast detecting cement concrete anti-sulphates corrosive ability.Concrete steps are following:
Step 1: prepare cement concrete test test specimen.It is the specimen of the special preparation of test that the cement concrete test test specimen that adopts in this test can be taked prior art, also directly the concrete after using sampling as testing test specimen.The method for preparing specimen: with concrete depositing in concrete mold, concrete mix vibratory compaction; After the demoulding, maintenance is to be measured to stipulating after the length of time on request.The concrete test test specimen that uses in this method of testing adopts cube specimen, is of a size of 100mm * 100mm * 100mm or 150mm * 150mm * 150mm and all can; If will test concrete rupture strength variation etc. in metabisulfite solution, sample dimensions can adopt 100mm * 100mm * 400mm or 150mm * 10mm * 500mm.
Step 2: it is clean that cement concrete is tested the test specimen removing surface, takes by weighing initial mass.
Step 3: fixing test test specimen.Referring to Fig. 1 and Fig. 2, with step 2) the test test specimen 3 after handling is fixed in the center of test box 5, and arbitrary opposing sidewalls of test test specimen 3 is fitted with the inwall of test box 5 respectively, and adopts paraffin or vaseline to seal; Another opposing sidewalls installing electrodes plate 4, two battery lead plates 4 respectively links to each other with anode with the negative electrode of impulse voltage generator 2 respectively; Test test specimen 3 tops isolate with partitions 7, seal between partitions, test specimen and test box inwall.
Wherein, the height of test box 5 highly slightly exceeds about 30mm than concrete test test specimen 3 like test box 5 slightly than concrete test test specimen 3 height, and purpose is to be beneficial to test operation, makes the metabisulfite solution liquid level be not less than test test specimen end face again.Test test specimen 3 is divided into the cavity of two isolation with test box 5, and is easy for installation for guaranteeing test specimen sealing, battery lead plate, and the bulk of test box two ends cavity is not less than the size of test specimen.Test box 5 can be made up of three test storehouses, also can have only a test storehouse, and the size in each test storehouse is confirmed according to the concrete sample size; Concrete sample places the centre in test storehouse, and the bulk of each end of test storehouse is not less than sample dimensions.Battery lead plate can be adopted galvanized sheet iron or stainless steel substrates etc., and the battery lead plate size should be slightly less than the test specimen face size, and battery lead plate can not damage the test specimen surface fixedly the time.
Step 4: in the test box cavity at concrete test test specimen 3 two ends, add metabisulfite solution 1, the concentration of metabisulfite solution is saturated getting final product.The metabisulfite solution liquid level is not less than test test specimen end face; The metabisulfite solution at concrete sample 3 two ends in the test box is because the effect of test specimen and baffle plate separates fully.
Step 5: the power supply of make pulse generator 2, test.The pulse voltage of pulse producer 2 is 5-30V, and frequency is 5-30 second (pulse waveform is referring to accompanying drawing 3), minimum seven days of whole test duration.When adopting low water binder ratio, the test duration can prolong accordingly.Need to prove that in whole test process, the sulfate liquor liquid level in the holding anode end test box is not less than test test specimen end face; In the process of energized, the sulfate ion in the anode tap metabisulfite solution can quicken diffusion in concrete sample, and reacts with hydrated product in the concrete sample, to reach the purpose of quick simulating nature corrosion concrete process; In the test process, the ion in the anode tap solution of test box can flow to the cathode terminal of test box, and the top of test box cathode terminal is provided with spillway, and the spillway position is not less than the test specimen height, and a gathering-device 6 is installed is collected the liquid that overflows.
Step 6: test result is passed judgment on.After test is accomplished, the concrete test test specimen is taken off, surperficial wiped clean takes by weighing the quality of test, and the compressive strength of test concrete test test specimen, and the method for testing of concrete crushing strength adopts prior art.
Calculate the mass change of concrete test front and back; And will test the compressive strength of test specimen and compare with the concrete reference piece intensity in maintenance under the standard curing condition to the identical length of time; Calculate under the pulse voltage effect; Sulfate liquor is to the reduction value of concrete strength, and concrete anti-sulphates corrosive ability size changes with the loss of strength value with quality of concrete to be passed judgment on.
In order to realize above-mentioned method of testing, as depicted in figs. 1 and 2, the proving installation that the present invention adopts is made up of test box 5 and impulse voltage generator 2, and the negative electrode of impulse voltage generator 2 is connected two battery lead plates 4 through lead respectively with anode.When test is prepared, concrete test test specimen 3 is fixed in test box 5 middle parts, wherein two relative sidewalls are fitted with the tank wall of test box 5 respectively and are sealed by filling agent, and test box 5 is divided into two cavitys that do not communicate; Again said battery lead plate 4 is individually fixed on other two walls of concrete test test specimen 3.The two ends, top of concrete test test specimen 3 are provided with and isolate plate washer 7, and the height of partitions 7 positions is suitable with the height of test box 5, and partitions 7 seals respectively with the tank wall of testing test specimen 3 and test box 5; After test preliminary work is accomplished, metabisulfite solution is joined in the cavity at test box 5 two ends, the power supply of make pulse generator, this moment, the sulfate ion of anode tap can quicken to be immersed in the concrete sample 3, and with concrete sample 3 in the hydrated product reaction; In the test process; Ionic liquid in the anode tap solution of test box flows to the cathode terminal of test box; The solution of cathode terminal increases gradually; The top of test box cathode terminal is provided with spillway, and the spillway position is not less than the height of test test specimen 3, and a fluid collection device 6 is installed is collected the solution that overflows; Test after 7-10 days, take out concrete test test specimen 3.
In the method for testing of the present invention, the concentration of the metabisulfite solution that is adopted, and the pulse voltage that applies and frequency all exert an influence to the time of test.When reach capacity concentration, pulse voltage 5-30V and frequency of sulfuric acid solution concentration is 5-30 during second, test after seven days, just can reach desirable test effect; Otherwise when if lower, pulse voltage of metabisulfite solution concentration and frequency are low, the test duration needs to prolong relatively, but also can reach desirable test effect.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102333210A CN101435816B (en) | 2008-12-11 | 2008-12-11 | A test method and test device for cement concrete resistance to sulfate corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102333210A CN101435816B (en) | 2008-12-11 | 2008-12-11 | A test method and test device for cement concrete resistance to sulfate corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101435816A CN101435816A (en) | 2009-05-20 |
| CN101435816B true CN101435816B (en) | 2012-02-29 |
Family
ID=40710361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102333210A Expired - Fee Related CN101435816B (en) | 2008-12-11 | 2008-12-11 | A test method and test device for cement concrete resistance to sulfate corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101435816B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101620217B (en) * | 2009-08-07 | 2012-12-19 | 武汉理工大学 | Device for controlling concentration of erosion solution in concrete durability experiment |
| CN102288539B (en) * | 2011-07-26 | 2013-09-25 | 重庆大学 | Cement concrete anti-thaumasite form of sulfate attack (TSA) erosion acceleration test device and method |
| CN103630487A (en) * | 2012-08-27 | 2014-03-12 | 中国科学院金属研究所 | Accelerated corrosion test device for nonferrous metal soil |
| CN103821382B (en) * | 2014-01-16 | 2016-03-16 | 河海大学 | A kind of electric osmose of rehabilitating concrete structure chlorine salt corrosion substitutes hole solution method |
| CN104614306B (en) * | 2015-02-04 | 2017-02-22 | 中电建路桥集团有限公司 | Method for testing corrosion effect of gyprock on concrete under action of multiple factors |
| CN104634726B (en) * | 2015-02-04 | 2017-03-29 | 中电建路桥集团有限公司 | Experimental rig of the selenolite to concrete erosion effect under multifactor effect |
| CN106404647A (en) * | 2016-08-30 | 2017-02-15 | 中国建筑材料科学研究总院 | Method and device for measuring seawater erosion resistance of cement-based materials |
| CN106841697B (en) * | 2017-01-05 | 2019-06-25 | 厦门理工学院 | A kind of monoblock type cement-based material ac impedance measurement fixture |
| CN107621439A (en) * | 2017-09-21 | 2018-01-23 | 吴腾飞 | A kind of concrete electric permeates erosion-resisting method |
| CN108801894A (en) * | 2018-07-19 | 2018-11-13 | 河海大学 | A kind of sulfate physical erosion acceleration test apparatus and test method |
| CN110426459A (en) * | 2019-08-15 | 2019-11-08 | 朱小明 | A kind of tunnel lining concrete testing methods of sulfate-attack resistance |
| CN110501274B (en) * | 2019-08-28 | 2022-02-11 | 重庆大学 | Device for testing permeability of chloride ions at reinforcing steel bar-concrete interface and testing method based on device |
| CN111747505B (en) * | 2020-06-19 | 2022-03-11 | 轻工业环境保护研究所 | An embedded sulfate corrosion monitoring and self-healing multifunctional microsphere |
| CN111929230B (en) * | 2020-09-10 | 2025-06-03 | 中铁建华南建设有限公司 | A test device and method for ion migration in concrete under simulated stray current |
| CN115372404A (en) * | 2022-08-23 | 2022-11-22 | 浙江工业职业技术学院 | Concrete Chloride Ion Migration Measurement System and Measurement Method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003149222A (en) * | 2001-11-09 | 2003-05-21 | Sumitomo Metal Mining Co Ltd | Quantitative determination method for sulfur trioxide |
| JP2005164256A (en) * | 2003-11-28 | 2005-06-23 | Okumura Corp | Calculation method for deterioration prediction of concrete structures |
| CN2849710Y (en) * | 2005-12-02 | 2006-12-20 | 冷发光 | Device for sulfate resistance test of concrete |
-
2008
- 2008-12-11 CN CN2008102333210A patent/CN101435816B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003149222A (en) * | 2001-11-09 | 2003-05-21 | Sumitomo Metal Mining Co Ltd | Quantitative determination method for sulfur trioxide |
| JP2005164256A (en) * | 2003-11-28 | 2005-06-23 | Okumura Corp | Calculation method for deterioration prediction of concrete structures |
| CN2849710Y (en) * | 2005-12-02 | 2006-12-20 | 冷发光 | Device for sulfate resistance test of concrete |
Non-Patent Citations (1)
| Title |
|---|
| 叶建雄等.掺合料混凝土抗硫酸盐性能及评价方法.《重庆建筑大学学报》.2006,第28卷(第4期), * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101435816A (en) | 2009-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101435816B (en) | A test method and test device for cement concrete resistance to sulfate corrosion | |
| CN101634141B (en) | A Multifunctional Soil Electroosmotic Consolidation Instrument | |
| CN103713023B (en) | A kind of carbonation depth of cement-base material method of testing | |
| CN101226167B (en) | Method for rapidly measuring reinforcing steel tarnishing criticality chlorine ion concentration | |
| CN109507100A (en) | Corrosion electrochemistry test method and device under plate-shape metal sample high stress | |
| CN101498648A (en) | Multifunctional in-situ electro-chemical measuring apparatus for tensile test | |
| CN106525929A (en) | Electrolytic bath suitable for electrochemical test and sample surface analysis, and application thereof | |
| CN102288654B (en) | Device and method for research on hydrogen permeation of metal in acidic atmospheric medium | |
| CN103487480B (en) | Method for rapidly predicting service life of reinforced concrete in chlorine salt environment | |
| CN110044811A (en) | A kind of solid concrete low-temperature resistance sulfate attack performance testing device and method | |
| CN103308443A (en) | Accelerated corrosion testing method for simulating soil corrosion process | |
| CN107941688B (en) | A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient | |
| CN105203449B (en) | The corrosion pond that steel bar corrosion is tested in a kind of reinforcing steel | |
| CN105548319A (en) | Electrochemical accelerated concrete hydration product corrosion measurement device | |
| Cheng et al. | A prediction method for the corrosion rate of steel rebar in carbonated mortar under variable environmental conditions | |
| CN105891101B (en) | The detection device and method of reinforcement in concrete macro cell corrosion | |
| CN105466833B (en) | Load action concrete hole structure evolution in-situ monitoring method and experimental rig | |
| CN110715970A (en) | Underground structure side wall crack indoor simulation device based on electrodeposition restoration | |
| CN206557071U (en) | A kind of device of acceleration thaumasite type sulphate corrosion | |
| CN212255015U (en) | A kind of extravasation electric accelerated steel corrosion test device | |
| CN207866672U (en) | A kind of concrete permeability energy test device | |
| CN112179836B (en) | Accelerated test device for researching concrete performance degradation under sulfate erosion | |
| CN221100431U (en) | Reinforcement corrosion rate measuring device under tide area multi-ion coupling erosion effect | |
| CN104990839A (en) | Permeability test device for sand-containing fog sealing layer material | |
| CN111595768A (en) | A kind of extravasation electric accelerated steel corrosion test device and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120229 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |