CN101219874B - Screw spike anchoring agent - Google Patents
Screw spike anchoring agent Download PDFInfo
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- CN101219874B CN101219874B CN2008100142153A CN200810014215A CN101219874B CN 101219874 B CN101219874 B CN 101219874B CN 2008100142153 A CN2008100142153 A CN 2008100142153A CN 200810014215 A CN200810014215 A CN 200810014215A CN 101219874 B CN101219874 B CN 101219874B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to an anchor agent for screw spikes, comprising cement, sand, fly ash and mixing liquid; in the anchor agent, the cement causes the combination between the anchor agent and walls of sleeper holes to be closer, improves the compressive resistance and flexural strength as well as anti-pulling force in a short time, and meets the construction requirements; the fly ash increases the porosity among each material and enhances density of the material; the durability indexes such as harmful ions erosion resistance, loss resistance of dynamic elastic modulus in freezing and thawing, and rust and corrosion resistance for protecting steel bars are greatly improved, and the service life are prolonged; waterproof agent of polymer concrete, which has good hydrophobic performance to prevent water from entering, does not contain water itself and no conductive irons of free state are formed, thus achieving excellent insulation performance; the anchor agent has the advantages of high early strength, and no temperature environmental affection.
Description
Technical field
The present invention relates to a kind of anchoring material in the railway construction construction, especially relate to a kind of anchoring agent that is used for railway concrete sleeper screw spike anchoring.
Background technology
At present, the railway spike on the railroad sleeper generally adopts the sulfur cement mortar anchorage agent to carry out anchoring.During with sulfur cement mortar anchorage agent anchor spike, need high temperature to boil, sulfur cement mortar anchorage agent meeting produces thick smoke and toxic gas, harm workmen's health, while is contaminate environment also, withdrawal resistance after the employing sulfur cement mortar anchorage agent anchoring is generally 60KN, and antifatigue is generally load cycle 2,000,000 times, and moist insulation resistance is 1.2 * 10
5Ω.More seriously sulphur is in fusion, in the process of cooling off, solidifying, and volumetric shrinkage easily causes and railway spike is reserved between hole wall and produced the slit, influences bond performance.When pouring into the agent of high temperature sulfur cement mortar anchorage in addition, also can cause the sleeper local temperature difference excessive and produce the crack, thereby cause the ruined hidden danger of sleeper, influence traffic safety.And when the sulfur cement mortar anchorage agent is constructed at the scene, at first will purchase pot, kitchen range and the fuel etc. that boil sulphur, construction is inconvenient, influences construction speed, and operating efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is at above defective, a kind of anchoring strength height is provided, is convenient to site operation, the operating efficiency height, and do not endanger workmen and screw spike anchoring agent free from environmental pollution.
For solving the problems of the technologies described above, technical scheme of the present invention is: screw spike anchoring agent is characterized in that: the component of described screw spike anchoring agent comprises: cement, sand, flyash, mix liquid.
A kind of prioritization scheme, the weight proportion of described each component of screw spike anchoring agent (by weight) is: cement 5～70, sand 10～40, flyash 9～40, mix liquid 10～42.
Another kind of prioritization scheme, the weight proportion of described each component of screw spike anchoring agent (by weight) is: cement 10～65, sand 8～30, flyash 13～45, mix liquid 14～37.
A kind of concrete prioritization scheme, the weight proportion of described each component of screw spike anchoring agent (by weight) is: cement 30, sand 20, flyash 30, mix liquid 20.
Another kind of concrete prioritization scheme, the weight proportion of described each component of screw spike anchoring agent (by weight) is: cement 20, sand 25, flyash 30, mix liquid 25.
Another kind of concrete prioritization scheme, the weight proportion of described each component of screw spike anchoring agent (by weight) is: cement 15, sand 25, flyash 30, mix liquid 30.
Described screw spike anchoring agent is to have mobile mixed material.
The polymer concrete waterproofer that described mix liquid is concentration≤10mol/L.
The particle diameter of described sand is 0.03mm～3mm.
The preferred label of cement is the silicate cement more than 32.5 or 32.5.
The flyash of the preferred coal ash index of flyash more than three grades or three grades.
Beneficial effect
The present invention adopts above technical scheme, compared with prior art has the following advantages:
(1) in the anchoring agent, it is more tight that cement can make the anchoring agent combine with the sleeper hole wall, improved resistance to compression, folding strength and withdrawal resistance in the short period of time, satisfied construction requirement.
(2) flyash has improved the porosity of various storerooms, has increased the degree of compactness of material, stops move modulus lost, protection reinforcing bar of erosion, the freeze-thaw-circulation of harmful ion not to be greatly improved by durability index such as corrosions, has prolonged work-ing life.
(3) polymer concrete waterproofer has good hydrophobicity performance, has stoped entering of moisture, and moisture-free own can not form the conductive ion of free state, has reached extraordinary insulating property.
This anchoring agent has the early strength height, and the characteristics that not influenced by temperature environment.
Following table is after screw spike uses anchoring agent anchoring of the present invention, the withdrawal resistance data that test obtains:
Specific embodiment
Embodiment 1, screw spike anchoring agent, the weight proportion of each component (by weight) is: label is that 32.5 silicate cement 30kg, particle diameter are that the concentration that the following sand 20kg of 2mm, three grades of flyash 30kg, Dayuan Industry Co., Ltd., Weifang City produce is the polymer concrete waterproofer 20kg of 9mol/L, forms through mix to have mobile screw spike anchoring agent.
Following table is that railway spike anchoring agent is tested the pressure-proof and snap-resistent intensity data (MPa) that obtains among this embodiment under condition of different temperatures:
Following table is the test result of the forward and backward modulus lost of moving of railway spike anchoring agent freeze-thaw cycle among this embodiment:
| The modulus of moving before the freeze-thaw cycle | The modulus of moving after freeze-thaw cycle finishes | ||||
| The test specimen parameter | Width | 100mm | The test specimen parameter | Width | 100mm |
| Length | 400mm | Length | 400mm | ||
| Weight | 9.8kg | Weight | 9.8kg | ||
| Test result | Resonant frequency | 1492Hz | Test result | Resonant frequency | 1472Hz |
| Young's modulus | 18.49GPa | Young's modulus | 17.99GPa | ||
Find out from last table data; the modulus of moving relatively that freeze-thaw cycle is forward and backward is 97.3%; this is because flyash has improved the porosity of various storerooms; increased the degree of compactness of material; stop the erosion of harmful ion; reduce freeze-thaw cycle and move modulus lost, protection reinforcing bar not by corrosion, durability index is greatly improved.
Following table is the judgement criteria that the ASTMC1202 coulometry detects permeability of concrete chloride ions:
| The electric weight that passes through (C) | Chloride ion permeability | Weather resistance |
| ＞4000 | High | Difference |
| 2000～4000 | Medium | Medium |
| 1000～2000 | Low | Good |
| 100～1000 | Very low | Fine |
| ＜100 | Can ignore | Fine |
According to manufactured size among this embodiment is the rectangular parallelepiped test specimen of 100 * 100 * 10mm, detect this anchoring agent test specimen with the ASTMC1202 coulometry, the test specimen of maintenance after 1 day its electric conduction quantity after testing is 6.97 coulombs, judgement criteria according to permeability of concrete chloride ions, the chloride ion permeability that shows anchoring agent of the present invention can be ignored, thereby has good weather resistance.
The test of anchoring agent insulating property:
With anchoring agent compact dimensions is the test specimen of 40 * 40 * 160mm, and an iron nail is respectively imbedded at the test specimen two ends, in order to simulation sleeper railway spike, and test its insulating property (testing tool is 500V megohm meter, volt ohm-milliammeter) under varying environment.
Specimen molding 4 hours: with megger test resistance value is 500M Ω, after putting into water and all soaking, take out do not wipe the test specimen surface water immediately the test resistance value be 14M Ω, the test resistance value is 25M Ω after 3 minutes, 5 minutes test resistance values are 60M Ω, and later resistance increases to normally gradually.
With volt ohm-milliammeter test resistance value for surpass maximum range, put into water all soak after, take out do not wipe the test specimen surface water immediately the test resistance value be 11M Ω, the test resistance value is 634M Ω after 3 minutes, the test resistance value surpassed maximum range in 5 minutes.
Specimen molding 150 days: megger test resistance value is greater than 500M Ω, putting into water all soaks, take out do not wipe the test specimen surface water immediately the test resistance value be 15M Ω, the test resistance value is 120M Ω after 3 minutes, the test resistance value increased to the Ω greater than 500M gradually in 5 minutes.
With volt ohm-milliammeter test resistance value for surpass maximum range, put into water all soak after, take out do not wipe the test specimen surface water immediately the test resistance value be 16M Ω, the test resistance value is 1041M Ω after 3 minutes, the test resistance value was for surpassing maximum range in 5 minutes.
The test of sleeper railway spike insulating property:
According to job specifications with the anchoring of sleeper railway spike good after, simulation wet environment test, spill water, test resistance immediately around the railway spike that anchoring is good:
With megger test resistance value is 0.1M Ω, and the test resistance value 0.2M Ω back 3 minutes time that sprinkles water sprinkles water and increases to normal resistance values gradually after 10 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.2M Ω under environment in the rain.Test average electrical resistance is 0.4M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
With volt ohm-milliammeter test resistance value is 0.2M Ω, and the test resistance value 0.2M Ω back 3 minutes time that sprinkles water sprinkles water and increases to normal resistance values gradually after 5 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.3M Ω under environment in the rain.Test average electrical resistance is 22M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
Fastener assembling fatigue test method according to Ministry of Railways's standard code is tested, and after the circulation of 6,000,000 subordinate loads, the railway spike anchorage portion does not have damage and is out of shape.
Embodiment 2, screw spike anchoring agent, the weight proportion of each component (by weight) is: label is that 32.5 silicate cement 25kg, sand 25kg, second class powered coal ash 30kg, Dayuan Industry Co., Ltd., Weifang City's product concentration that particle diameter is 0.5mm～3mm are the polymer concrete waterproofer 20kg of 9mol/L, forms through mix to have mobile screw spike anchoring agent.
Following table be the railway spike anchoring agent of above-mentioned embodiment under condition of different temperatures, the pressure-proof and snap-resistent intensity data (MPa) that test obtains:
Following table is the test result of the forward and backward modulus lost of moving of railway spike anchoring agent freeze-thaw cycle of above-mentioned embodiment:
| The modulus of moving before the freeze-thaw cycle | The modulus of moving after freeze-thaw cycle finishes | ||||
| The test specimen parameter | Width | 100mm | The test specimen parameter | Width | 100mm |
| Length | 400mm | Length | 400mm | ||
| Weight | 9.8kg | Weight | 9.8kg | ||
| Test result | Resonant frequency | 1498Hz | Test result | Resonant frequency | 1432Hz |
| Young's modulus | 17.79GPa | Young's modulus | 17.01GPa | ||
Find out from last table data; the modulus of moving relatively that freeze-thaw cycle is forward and backward is 95.6%; this is because flyash has improved the porosity of various storerooms; increased the degree of compactness of material; stop the erosion of harmful ion; reduce freeze-thaw cycle and move modulus lost, protection reinforcing bar not by corrosion, durability index is greatly improved.
Following table is the judgement criteria that the ASTMC1202 coulometry detects permeability of concrete chloride ions:
| The electric weight that passes through (C) | Chloride ion permeability | Weather resistance |
| ＞4000 | High | Difference |
| 2000～4000 | Medium | Medium |
| 1000～2000 | Low | Good |
| 100～1000 | Very low | Fine |
| ＜100 | Can ignore | Fine |
According to the above-mentioned embodiment manufactured size rectangular parallelepiped test specimen that is 100 * 100 * 10mm, detect this anchoring agent test specimen with the ASTMC1202 coulometry, the test specimen of maintenance after 1 day its electric conduction quantity after testing is 18.97 coulombs, judgement criteria according to permeability of concrete chloride ions, the chloride ion permeability that shows anchoring agent of the present invention can be ignored, thereby has good weather resistance.
The test of anchoring agent insulating property:
With anchoring agent compact dimensions is the test specimen of 40 * 40 * 160mm, and an iron nail is respectively imbedded at the test specimen two ends, in order to simulation sleeper railway spike, and test its insulating property (testing tool is 500V megohm meter, volt ohm-milliammeter) under varying environment.
Specimen molding 4 hours: with megger test resistance value is 310M Ω, after putting into water and all soaking, take out do not wipe the test specimen surface water immediately the test resistance value be 4M Ω, the test resistance value is 19M Ω after 3 minutes, 5 minutes test resistance values are 80M Ω, and later resistance increases to normally gradually.
With volt ohm-milliammeter test resistance value for surpass maximum range, put into water all soak after, take out do not wipe the test specimen surface water immediately the test resistance value be 13M Ω, the test resistance value is 648M Ω after 3 minutes, the test resistance value surpassed maximum range in 5 minutes.
Specimen molding 150 days: megger test resistance value is greater than 500M Ω, putting into water all soaks, take out do not wipe the test specimen surface water immediately the test resistance value be 12M Ω, the test resistance value is 130M Ω after 3 minutes, the test resistance value increased to the Ω greater than 500M gradually in 5 minutes.
With volt ohm-milliammeter test resistance value for surpass maximum range, put into water all soak after, take out do not wipe the test specimen surface water immediately the test resistance value be 26M Ω, the test resistance value is 841M Ω after 3 minutes, the test resistance value was for surpassing maximum range in 5 minutes.
The test of sleeper railway spike insulating property:
According to job specifications with the anchoring of sleeper railway spike good after, simulation wet environment test, spill water, test resistance immediately around the railway spike that anchoring is good:
With megger test resistance value is 0.05M Ω, the test resistance value 0.2M Ω back 3 minutes time that sprinkles water, and the test resistance value 5.0M Ω after 10 minutes that sprinkles water increases to normal resistance values gradually after 20 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.1M Ω under environment in the rain.Test average electrical resistance is 0.2M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
With volt ohm-milliammeter test resistance value is 0.3M Ω, and the test resistance value 0.5M Ω back 3 minutes time that sprinkles water sprinkles water and increases to normal resistance values gradually after 5 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.2M Ω under environment in the rain.Test average electrical resistance is 32M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
Fastener assembling fatigue test method according to Ministry of Railways's standard code is tested, and after the circulation of 6,000,000 subordinate loads, the railway spike anchorage portion does not have damage and is out of shape.
Embodiment 3, screw spike anchoring agent, the weight proportion of each component (by weight) is: label be 42.5 silicate cement 30kg, particle diameter be 1.25mm following sand 20kg, first level flour coal ash 30kg, Dayuan Industry Co., Ltd., Weifang City to produce concentration be the polymer concrete waterproofer mix liquid 20kg of 9mol/L, form through mix to have mobile screw spike anchoring agent.
Following table be the railway spike anchoring agent of above-mentioned embodiment under condition of different temperatures, the pressure-proof and snap-resistent intensity data (MPa) that test obtains:
Following table is the test result of the forward and backward modulus lost of moving of railway spike anchoring agent freeze-thaw cycle of above-mentioned embodiment:
| The modulus of moving before the freeze-thaw cycle | The modulus of moving after freeze-thaw cycle finishes | ||||
| The test specimen parameter | Width | 100mm | The test specimen parameter | Width | 100mm |
| Length | 400mm | Length | 400mm | ||
| Weight | 9.8kg | Weight | 9.8kg | ||
| Test result | Resonant frequency | 1461Hz | Test result | Resonant frequency | 1422Hz |
| Young's modulus | 18.29GPa | Young's modulus | 17.79GPa | ||
Find out from last table data; the modular ratio of moving that freeze-thaw cycle is forward and backward is 97.3%; this is because flyash has improved the porosity of various storerooms; increased the degree of compactness of material; stop the erosion of harmful ion; reduce freeze-thaw cycle and move modulus lost, protection reinforcing bar not by corrosion, durability index is greatly improved.
Following table is the judgement criteria that the ASTMC1202 coulometry detects permeability of concrete chloride ions:
| The electric weight that passes through (C) | Chloride ion permeability | Weather resistance |
| ＞4000 | High | Difference |
| 2000～4000 | Medium | Medium |
| 1000～2000 | Low | Good |
| 100～1000 | Very low | Fine |
| ＜100 | Can ignore | Fine |
According to the above-mentioned embodiment manufactured size rectangular parallelepiped test specimen that is 100 * 100 * 10mm, detect this anchoring agent test specimen with the ASTMC1202 coulometry, the test specimen of maintenance after 1 day its electric conduction quantity after testing is 28.32 coulombs, judgement criteria according to permeability of concrete chloride ions, the chloride ion permeability that shows anchoring agent of the present invention can be ignored, thereby has good weather resistance.
The test of anchoring agent insulating property:
With anchoring agent compact dimensions is the test specimen of 40 * 40 * 160mm, and an iron nail is respectively imbedded at the test specimen two ends, in order to simulation sleeper railway spike, and test its insulating property (testing tool is 500V megohm meter, volt ohm-milliammeter) under varying environment.
Specimen molding 4 hours: with megger test resistance value is 330M Ω, after putting into water and all soaking, take out do not wipe the test specimen surface water immediately the test resistance value be 10M Ω, the test resistance value is 22M Ω after 3 minutes, 5 minutes test resistance values are 58M Ω, and later resistance increases to normally gradually.
With volt ohm-milliammeter test resistance value is to surpass maximum range, after putting into water and all soaking, take out do not wipe the test specimen surface water immediately the test resistance value be 9M Ω, the test resistance value is 527M Ω after 3 minutes, 5 minutes test resistance values are 1027M Ω, and test resistance surpassed maximum range in 10 minutes.
Specimen molding 150 days: megger test resistance value is greater than 500M Ω, put into water and all soak, take out do not wipe the test specimen surface water immediately the test resistance value be 5M Ω, the test resistance value is 90M Ω after 3 minutes, 5 minutes test resistance values are 200M Ω, increase to the Ω greater than 500M after 15 minutes gradually.
With volt ohm-milliammeter test resistance value for surpass maximum range, put into water all soak after, take out do not wipe the test specimen surface water immediately the test resistance value be 26M Ω, the test resistance value is 841M Ω after 3 minutes, the test resistance value was for surpassing maximum range in 5 minutes.
The test of sleeper railway spike insulating property:
According to job specifications with the anchoring of sleeper railway spike good after, simulation wet environment test, spill water, test resistance immediately around the railway spike that anchoring is good:
With megger test resistance value is 0.1M Ω, and the test resistance value 0.15M Ω back 3 minutes time that sprinkles water sprinkles water and increases to normal resistance values gradually after 10 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.2M Ω under environment in the rain.Test average electrical resistance is 0.3M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
With volt ohm-milliammeter test resistance value is 0.2M Ω, and the test resistance value 0.23M Ω back 3 minutes time that sprinkles water sprinkles water and increases to normal resistance values gradually after 5 minutes.Overcast and rainy continuously more than 7 hours, and the test resistance value is 0.3M Ω under environment in the rain.Test average electrical resistance is 20M Ω when cloudy environment descended (atmospheric moisture is about 80%) in 1 hour behind the rain.
Fastener assembling fatigue test method according to Ministry of Railways's standard code is tested, and after the circulation of 6,000,000 subordinate loads, the railway spike anchorage portion does not have damage and is out of shape.
Claims (7)
1. screw spike anchoring agent, it is characterized in that: the weight proportion of described each component of screw spike anchoring agent (by weight) is:
Cement 5～70, sand 10～40, flyash 9～40, mix liquid 10～42;
Wherein, mix liquid is that the concentration that Dayuan Industry Co., Ltd., Weifang City produces is the polymer concrete waterproofer of 9mol/L.
2. screw spike anchoring agent as claimed in claim 1 is characterized in that: the weight proportion of described each component of screw spike anchoring agent (by weight) is:
Cement 10～65, sand 8～30, flyash 13～45, mix liquid 14～37.
3. screw spike anchoring agent as claimed in claim 1 is characterized in that: the weight proportion of described each component of screw spike anchoring agent (by weight) is:
Cement 30, sand 20, flyash 30, mix liquid 20.
4. screw spike anchoring agent as claimed in claim 1 is characterized in that: the weight proportion of described each component of screw spike anchoring agent (by weight) is:
Cement 20, sand 25, flyash 30, mix liquid 25.
5. screw spike anchoring agent as claimed in claim 1 is characterized in that: the weight proportion of described each component of screw spike anchoring agent (by weight) is:
Cement 15, sand 25, flyash 30, mix liquid 30.
6. as claim 1,2,3,4,5 one of them described screw spike anchoring agent, it is characterized in that: described screw spike anchoring agent is to have mobile mixed material.
7. screw spike anchoring agent as claimed in claim 6 is characterized in that: the particle diameter of described sand is 0.03mm～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100142153A CN101219874B (en) | 2008-01-28 | 2008-01-28 | Screw spike anchoring agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100142153A CN101219874B (en) | 2008-01-28 | 2008-01-28 | Screw spike anchoring agent |
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| Publication Number | Publication Date |
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| CN101219874A CN101219874A (en) | 2008-07-16 |
| CN101219874B true CN101219874B (en) | 2011-08-31 |
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| CN2008100142153A Active CN101219874B (en) | 2008-01-28 | 2008-01-28 | Screw spike anchoring agent |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935964A (en) * | 2010-09-10 | 2011-01-05 | 天津市铁信工贸发展有限公司 | Anchoring liquid for screw spikes of reinforced concrete sleepers |
| CN106082804B (en) * | 2016-06-12 | 2018-05-08 | 山东大元实业股份有限公司 | A kind of Anchor Agent |
| CN109320283B (en) * | 2018-11-27 | 2021-09-17 | 襄阳华壁新型建材有限公司 | Fly ash autoclaved aerated concrete block |
| CN115028393A (en) * | 2022-05-26 | 2022-09-09 | 中德新亚建筑材料有限公司 | Insulating spike anchoring agent and use method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332215A (en) * | 2001-08-10 | 2002-01-23 | 武汉大学 | Inorganic steel bar anchoring glue for concrete and its production process |
-
2008
- 2008-01-28 CN CN2008100142153A patent/CN101219874B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332215A (en) * | 2001-08-10 | 2002-01-23 | 武汉大学 | Inorganic steel bar anchoring glue for concrete and its production process |
Non-Patent Citations (2)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局.建筑用砂.《中华人民共和国国家标准》.2002,全文. * |
| 熊大玉等.《混凝土外加剂》.《混凝土外加剂》.化学工业出版社,2002,(第1版),第238-242页. * |
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Inventor after: Qi Liangshu Inventor after: Huang Cui Inventor after: Li Yanzhi Inventor after: Liu Jianhui Inventor after: Ji Yuansheng Inventor before: Qi Liangshu Inventor before: Huang Cui Inventor before: Liu Jianhui Inventor before: Ji Yuansheng |
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Denomination of invention: Screw spike anchoring agent Effective date of registration: 20220526 Granted publication date: 20110831 Pledgee: Bank of Weifang Limited by Share Ltd. Weifang hope branch Pledgor: SHANDONG DAYUAN INDUSTRIAL Co.,Ltd. Registration number: Y2022980006426 |