CN103274648A - Granite stone powder doped high-strength concrete tubular pile and production method thereof - Google Patents
Granite stone powder doped high-strength concrete tubular pile and production method thereof Download PDFInfo
- Publication number
- CN103274648A CN103274648A CN2013102448874A CN201310244887A CN103274648A CN 103274648 A CN103274648 A CN 103274648A CN 2013102448874 A CN2013102448874 A CN 2013102448874A CN 201310244887 A CN201310244887 A CN 201310244887A CN 103274648 A CN103274648 A CN 103274648A
- Authority
- CN
- China
- Prior art keywords
- tubular pile
- stone powder
- granite stone
- concrete tubular
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a granite stone powder doped high-strength concrete tubular pile used for civil construction industry, and granite stone powder is doped in the concrete for producing the concrete tubular pile. The invention also provides a production method for the high-strength concrete tubular pile, which comprises the following steps: stirring cement, crushed stones, river sand, fine grinding sand and the granite stone powder, which are in a certain matching ratio, in advance for 30 seconds, and then filling into a stirrer; adding water and water-reducing agent for stirring; after completion of stirring, allowing stirring materials to be subjected to uniform layering and continuous watering at one end of a tubular pile die; performing centrifugal shaping; and finally performing maintenance. The tubular pile produced by the method is high in strength, good in performance, energy-saving and environment-friendly.
Description
Technical field
The present invention relates to a kind of high-strength concrete tubular pile of mixing granite stone powder and production method thereof for the civil construction industry.
Background technology
In the prior art, the prestressed centrifugally high-strength concrete tubular pile (is called for short the PHC pile tube, pile body centrifugal concrete strength grade must not be lower than C80) to produce used gelling material be high grade silicate cement or ordinary Portland cement more than 42.5 grades, " mixing prestressed high-strength concrete pile and production method thereof that levigate river sand is produced " proposed in the patent of invention of publication number CN 101672035A, though this patent of invention uses levigate sand to replace PHC pile tube and concrete performance thereof that cement cementitious material meets and exceeds the performance of its tubular pile concrete not mix levigate river sand, but it has used a large amount of river sand, and river sand belongs to Nonrenewable resources, a large amount of exploitations has not only destroyed original river course, the farmland, environment is caused disadvantageous effect, but also caused many engineering accidents." mixing the technology that levigate building sand is produced prestressed high-strength concrete pile " proposed in the patent of invention of publication number CN 1133771A, though this patent of invention has been utilized construction waste, but this adulterant need be milled down to certain fineness, need great amount of manpower and material resources and financial resources, be difficult for popularizing in an all-round way." mixing concrete tubular pile and the production method thereof of pulverized slag powder " proposed in the patent of invention of publication number CN 1598164A; granite stone powder replaces cement with certain proportion equivalent or levigate sand production high-strength concrete tubular pile does not see that report is arranged but mix; adopt granite stone powder in certain proportion equivalent replace the waste material that cement or levigate sand not only can take full advantage of processing of stone; protect environment, and in the resource of saving cement and river sand, can also improve the performance of tubular pile concrete.
Summary of the invention
The object of the present invention is to provide a kind of high-strength concrete tubular pile and production method thereof of mixing granite stone powder, the high-strength concrete tubular pile intensity height of mixing granite stone powder that adopts this method to produce, performance is good, energy-conserving and environment-protective.
The objective of the invention is to realize by the following technical solutions: a kind of high-strength concrete tubular pile of mixing granite stone powder, comprise concrete tubular pile, be mixed with granite stone powder in the concrete for the production of described concrete tubular pile.
Further, the concrete benchmark proportioning for the production of described concrete tubular pile is:
Cement: rubble: river sand: levigate sand: water: water reducer=0.5 ~ 0.7:2.0 ~ 4.0:1.0 ~ 2.0:0.3 ~ 0.5:0.25 ~ 0.4:0.01 ~ 0.03
And replace in the benchmark proportioning 10%～100% levigate sand with quality such as described granite stone powders.
Further, the concrete benchmark proportioning for the production of described concrete tubular pile is:
Cement: rubble: river sand: levigate sand: water: water reducer=1:2.0 ~ 4.0:1.0 ~ 2.0:0:0.25 ~ 0.35:0.01 ~ 0.03
And replace in the benchmark proportioning 10%～40% cement with quality such as described granite stone powders.
The present invention also provides the production method of above-mentioned high-strength concrete tubular pile, the cement, rubble, river sand, levigate sand and the granite stone powder that drop into above-mentioned proportioning in agitator stirred 30 seconds earlier in advance, add water again with water reducer and stir, after finishing, stirring will stir material from an end even laminating continuous pouring of pipe pile die, centrifugal forming carries out maintenance at last then.
Further, the described concrete churning time of mixing granite stone powder is 240 seconds ~ 270 seconds.
Further, stir to finish to watering to described pipe pile die from the described concrete of mixing granite stone powder and finish, the timed interval is no more than 25 minutes.
Further, finish to beginning to carry out centrifugal forming from pouring, matched moulds, be no more than 15 minutes pitch time.
Further, the slump after the described concrete of mixing granite stone powder stirs is 30mm～70mm.
Further, the process of maintenance is for to carry out 4 hours～8 hours atmospheric steam curing and carrying out 6 hours～12 hours autoclave under 170 ℃～200 ℃ temperature under 70 ℃～90 ℃ temperature.
Compared with prior art, the invention has the beneficial effects as follows: in the concrete for the production of concrete tubular pile, mix granite stone powder, not only utilize the significant filling effect of granite stone powder itself, reinforced effects and anti-permeability performance to improve intensity and the anti-permeability performance of tubular pile concrete, and take full advantage of processing granite building material waste material, reduce the consumption of high grade silicate (normal silicate) cement or levigate sand, economize on resources, cut down the consumption of energy, alleviate granite stone powder to the pollution of environment, have good economic benefits and social benefit.
Description of drawings
Fig. 1 is the production scheme that the present invention mixes the high-strength concrete tubular pile of granite stone powder.
Embodiment
The present invention mixes the high-strength concrete tubular pile of granite stone powder, comprises concrete tubular pile, is mixed with granite stone powder in the concrete for the production of described concrete tubular pile.
In one embodiment of the invention, for the production of the concrete benchmark proportioning of described concrete tubular pile be:
Cement: rubble: river, Min River sand: levigate sand: water: water reducer=0.5 ~ 0.7:2.0 ~ 4.0:1.0 ~ 2.0:0.3 ~ 0.5:0.25 ~ 0.4:0.01 ~ 0.03(benchmark proportioning A)
And replace among the benchmark proportioning A 10%～100% levigate sand with described granite stone powder equivalent.
In another embodiment of the present invention, for the production of the concrete benchmark proportioning of described concrete tubular pile be:
Cement: rubble: river, Min River sand: levigate sand: water: water reducer=1:2.0 ~ 4.0:1.0 ~ 2.0:0:0.25 ~ 0.35:0.01 ~ 0.03(benchmark proportioning B)
And replace among the benchmark proportioning B 10%～40% cement with described granite stone powder equivalent.
The present invention also provides the production method of above-mentioned high-strength concrete tubular pile, the cement, rubble, river, Min River sand, levigate sand and the granite stone powder that drop into above-mentioned proportioning in agitator stirred 30 seconds earlier in advance, add water again with water reducer and stir, after finishing, stirring will stir material from an end even laminating continuous pouring of pipe pile die, centrifugal forming carries out maintenance at last then.
In the present embodiment, the described concrete churning time of mixing granite stone powder is 240 seconds ~ 270 seconds, prolongs 60 seconds～90 seconds than normal concrete churning time.
Stir to finish to watering to described pipe pile die from the described concrete of mixing granite stone powder and finish, the timed interval is no more than 25 minutes.
Finish to beginning to carry out centrifugal forming from pouring, matched moulds, be no more than 15 minutes pitch time.
Mix the centrifugal forming time lengthening 1 minute of the described concrete high speed of granite stone powder and middling speed centrifugal forming time ratio normal concrete, the centrifugal forming time of low speed, low-medium speed and high speed is constant, and namely its centrifugal forming time is low speed 180 seconds, low-medium speed 90 seconds, middling speed 180 seconds, high speed 90 seconds, high speed 360 seconds.
The slump after the described concrete of mixing granite stone powder stirs is 30mm～70mm.
The process of maintenance is for to carry out 4 hours～8 hours atmospheric steam curing and carrying out 6 hours～12 hours autoclave under 170 ℃～200 ℃ temperature under 70 ℃～90 ℃ temperature.
The present invention is further illustrated below in conjunction with specific embodiment.
The test starting material
(1) cement: the conch board ordinary Portland cement that test water mud adopts Taizhou conch cement company limited to produce, the model of cement is P. II 52.5; Chemical ingredients such as the table 1 of cement, performance index such as the table 2 of cement.
The chemical ingredients of 1 cement
The performance index of 2 cement
(2) coarse aggregate: coarse aggregate is taken from the stone field in area, Fuqing and according to the relevant regulations of " cobble for building, rubble " (GB/T 14685-2001) test is measured with common stone, and the apparent density of stone is 2550 kg/m
3, tap density is 1450 kg/m
3, faller gill shape granule content is 8.3%, the crush index value is 7%, grain composition such as the table 3 of stone.
The grain composition of 3 stones
(3) fine aggregate: fine aggregate adopts the natural river sand in area, Minqing; Relevant regulations according to " building sand " (GB/T 14684-2001) is measured the every characteristic of fine aggregate, and its apparent density is 2500kg/m
3, tap density 1450 kg/m
3The silt content of sand is 0.3%; Fineness modulus is 2.8; The average moisture content of sand is 5.67%, and the grain composition screening of sand sees Table 4.
The grain composition of 4 sands
(4) levigate sand: levigate sand originates from Fujian Jianhua Concrete Pole Co., Ltd., its specific targets such as table 5.
5 levigate sand specific targets
(5) granite stone powder: granite stone powder originates from the Lianjiang County, Fujian Province, and density is 2.768 g/cm
3, specific surface area is 588 kg/m
3Entrust chemical ingredients such as the table 6 of the granite stone powder of China Resources, Fujian (Liaanjiang county) cement company limited detection.
The chemical composition analysis of 6 granite stone powders
(6) water reducer: the YC-1 type naphthalene series high-efficiency water-reducing agent that adopts Yongchun, Fuqing, Fujian to produce, its flowing degree of net paste of cement is 220mm, density is 1.218g/cm
3, pH value is 9, chloride ion content 0.14%, alkali content 0.014%, other performance index such as table 7 of water reducer.
The performance index of 7 water reducers
(7) water: water is taken from the tap water of Fujian Jianhua Concrete Pole Co., Ltd..
Embodiment 1: adopt PHC AB type Ф 400 * 95mm pile tube of the levigate sand of granite stone powder replacement 50%, concrete proportioning such as table 8.
8 concrete mixs
Production method is: the raw material of above-mentioned proportioning is dropped into agitator, churning time is 180 seconds, the slump that records is 40mm, to stir material after the stirring waters fast to pipe pile die, carry out centrifugal forming then, centrifugation time is that low speed 240 seconds, middling speed 60 seconds, high speed are: 60 seconds, 300 seconds at a high speed, atmospheric steam curing and two kinds of forms of autoclave curing were adopted in maintenance: atmospheric steam curing: the 4h that rests-intensification 1.5h-constant temperature 3.25h-cooling 1 hour; Autoclave curing: the 2h that heats up in autoclave-constant temperature 4h-cooling 3h-open the quiet 1h of stopping of autoclave-product goes out still.Concrete test block intensity reaches 96MPa as a result, coincidence tube pile concrete C80 requirement.The visual appearance of PHC AB type Ф 400 * 95mm pile tube meets the National Standard pretensioned prestressed concrete pipe pile " index of premium grads among the GB13476-1999, respond well in test, satisfy the design and use requirement.
Embodiment 2: adopt granite stone powder to replace levigate sand PHC AB type Ф 500 * 125mm pile tube of 100%, concrete proportioning such as table 9.
9 concrete mixs
Production method is: the raw material of above-mentioned proportioning is dropped into agitator, churning time is 180 seconds, the slump that records is 37mm, to stir material after the stirring waters fast to pipe pile die, carry out centrifugal forming then, centrifugation time is that low speed 240 seconds, low-medium speed 90 seconds, middling speed 120 seconds, high speed are: 90 seconds, 300 seconds at a high speed, atmospheric steam curing and two kinds of forms of autoclave curing were adopted in maintenance: atmospheric steam curing: the 4h that rests-intensification 1.5h-constant temperature 3.25h-cooling 1 hour; Autoclave curing: the 2h that heats up in autoclave-constant temperature 4h-cooling 3h-open the quiet 1h of stopping of autoclave-product goes out still.Concrete test block intensity reaches 89MPa as a result, coincidence tube pile concrete C80 requirement.The visual appearance of PHC AB type Ф 500 * 125mm pile tube meets the National Standard pretensioned prestressed concrete pipe pile " index of premium grads among the GB13476-2009, respond well in test, satisfy the design and use requirement.
Embodiment 3: adopt granite stone powder to replace cement PHC AB type Ф 500 * 125mm pile tube of 20%, concrete proportioning such as table 10.
10 concrete mixs
Production method is: the raw material of above-mentioned proportioning is dropped into agitator, churning time is 180 seconds, the slump that records is 32mm, to stir material after the stirring waters fast to pipe pile die, carry out centrifugal forming then, centrifugation time is that low speed 240 seconds, low-medium speed 90 seconds, middling speed 120 seconds, high speed are: 90 seconds, 300 seconds at a high speed, atmospheric steam curing and two kinds of forms of autoclave curing were adopted in maintenance: atmospheric steam curing: the 4h that rests-intensification 1.5h-constant temperature 3.25h-cooling 1 hour; Autoclave curing: the 2h that heats up in autoclave-constant temperature 4h-cooling 3h-open the quiet 1h of stopping of autoclave-product goes out still.Concrete test block intensity reaches 92MPa as a result, coincidence tube pile concrete C80 requirement.The visual appearance of PHC AB type Ф 500 * 125mm pile tube meets the National Standard pretensioned prestressed concrete pipe pile " index of premium grads among the GB13476-1999, respond well in test, satisfy the design and use requirement.
More than be preferred embodiment of the present invention, all changes of doing according to technical solution of the present invention when the function that produces does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (9)
1. a high-strength concrete tubular pile of mixing granite stone powder comprises concrete tubular pile, it is characterized in that: be mixed with granite stone powder in the concrete for the production of described concrete tubular pile.
2. the high-strength concrete tubular pile of mixing granite stone powder according to claim 1, it is characterized in that: the concrete benchmark proportioning for the production of described concrete tubular pile is:
Cement: rubble: river sand: levigate sand: water: water reducer=0.5 ~ 0.7:2.0 ~ 4.0:1.0 ~ 2.0:0.3 ~ 0.5:0.25 ~ 0.4:0.01 ~ 0.03
And replace in the benchmark proportioning 10%～100% levigate sand with quality such as described granite stone powders.
3. the high-strength concrete tubular pile of mixing granite stone powder according to claim 1, it is characterized in that: the concrete benchmark proportioning for the production of described concrete tubular pile is:
Cement: rubble: river sand: levigate sand: water: water reducer=1:2.0 ~ 4.0:1.0 ~ 2.0:0:0.25 ~ 0.35:0.01 ~ 0.03
And replace in the benchmark proportioning 10%～40% cement with quality such as described granite stone powders.
4. production method as claim 2 or 3 described high-strength concrete tubular piles, it is characterized in that: the cement, rubble, river sand, levigate sand and the granite stone powder that drop into certain proportioning in agitator stirred 30 seconds earlier in advance, add water again with water reducer and stir, after finishing, stirring will stir material from an end even laminating continuous pouring of pipe pile die, centrifugal forming carries out maintenance at last then.
5. the production method of high-strength concrete tubular pile according to claim 4, it is characterized in that: the described concrete churning time of mixing granite stone powder is 240 seconds ~ 270 seconds.
6. the production method of high-strength concrete tubular pile according to claim 4 is characterized in that: stir to finish to watering to described pipe pile die from the described concrete of mixing granite stone powder and finish, the timed interval is no more than 25 minutes.
7. the production method of high-strength concrete tubular pile according to claim 4 is characterized in that: finish to beginning to carry out centrifugal forming from pouring, matched moulds, be no more than 15 minutes pitch time.
8. the production method of high-strength concrete tubular pile according to claim 4 is characterized in that: the slump after the described concrete of mixing granite stone powder stirs is 30mm～70mm.
9. the production method of high-strength concrete tubular pile according to claim 4, it is characterized in that: the process of maintenance is for to carry out 4 hours～8 hours atmospheric steam curing and carrying out 6 hours～12 hours autoclave under 170 ℃～200 ℃ temperature under 70 ℃～90 ℃ temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244887.4A CN103274648B (en) | 2013-06-20 | 2013-06-20 | Granite stone powder doped high-strength concrete tubular pile and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310244887.4A CN103274648B (en) | 2013-06-20 | 2013-06-20 | Granite stone powder doped high-strength concrete tubular pile and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103274648A true CN103274648A (en) | 2013-09-04 |
| CN103274648B CN103274648B (en) | 2015-02-04 |
Family
ID=49057308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310244887.4A Expired - Fee Related CN103274648B (en) | 2013-06-20 | 2013-06-20 | Granite stone powder doped high-strength concrete tubular pile and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103274648B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950101A (en) * | 2014-04-21 | 2014-07-30 | 南通华柱水泥制品有限公司 | Manufacturing method for high-strength concrete pile |
| CN104230255A (en) * | 2014-08-22 | 2014-12-24 | 南通华柱水泥制品有限公司 | Process for producing high-strength tubular pile with weather-resistant property |
| CN111574185A (en) * | 2020-04-15 | 2020-08-25 | 福建省大地管桩有限公司 | Acid corrosion resistant concrete pipe pile and preparation method thereof |
| CN112479649A (en) * | 2020-11-18 | 2021-03-12 | 湖南大学 | Granite waste residue powder and silica fume synergistic modified recycled aggregate concrete and preparation method thereof |
| CN114804781A (en) * | 2022-05-25 | 2022-07-29 | 惠州市三环构件有限公司 | Durable PHC tubular pile concrete and PHC tubular pile |
| CN115557742A (en) * | 2022-10-27 | 2023-01-03 | 青岛青建新型材料集团有限公司 | Anti-falling concrete wall body layer and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093690A (en) * | 1974-12-19 | 1978-06-06 | U.S. Terrazzo Panels, Inc. | Method for the manufacture of concrete and like products |
| CN1133771A (en) * | 1995-10-13 | 1996-10-23 | 广州羊城管桩有限公司 | Technique for mfg. prestressed high-strength concrete pipe pile by blending grinding fine building sand |
| JP2001262562A (en) * | 2000-03-15 | 2001-09-26 | Taiheiyo Cement Corp | Concrete pile |
| CN1598164A (en) * | 2004-04-12 | 2005-03-23 | 中国第二十冶金建设公司 | Concrete tube pile with fine milled slag micropowder and production me thod thereof |
| CN101550694A (en) * | 2009-04-28 | 2009-10-07 | 福建省大地管桩有限公司 | Corrosion resistance pre-stressed concrete pipe pile and method of producing the same |
| CN101672035A (en) * | 2009-09-22 | 2010-03-17 | 广东建华管桩有限公司 | High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof |
| CN102179875A (en) * | 2011-03-17 | 2011-09-14 | 中交三航局第三工程有限公司 | Still-free PHC tubular pile and production process thereof |
-
2013
- 2013-06-20 CN CN201310244887.4A patent/CN103274648B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093690A (en) * | 1974-12-19 | 1978-06-06 | U.S. Terrazzo Panels, Inc. | Method for the manufacture of concrete and like products |
| CN1133771A (en) * | 1995-10-13 | 1996-10-23 | 广州羊城管桩有限公司 | Technique for mfg. prestressed high-strength concrete pipe pile by blending grinding fine building sand |
| JP2001262562A (en) * | 2000-03-15 | 2001-09-26 | Taiheiyo Cement Corp | Concrete pile |
| CN1598164A (en) * | 2004-04-12 | 2005-03-23 | 中国第二十冶金建设公司 | Concrete tube pile with fine milled slag micropowder and production me thod thereof |
| CN101550694A (en) * | 2009-04-28 | 2009-10-07 | 福建省大地管桩有限公司 | Corrosion resistance pre-stressed concrete pipe pile and method of producing the same |
| CN101672035A (en) * | 2009-09-22 | 2010-03-17 | 广东建华管桩有限公司 | High-strength prestressed concrete pipe-styled pile blended with ground river sands and production method thereof |
| CN102179875A (en) * | 2011-03-17 | 2011-09-14 | 中交三航局第三工程有限公司 | Still-free PHC tubular pile and production process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 庄占龙等: "花岗岩石渣粉混凝土小型空心砌块在泉州地区的应用", 《建筑砌块与砌块建筑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950101A (en) * | 2014-04-21 | 2014-07-30 | 南通华柱水泥制品有限公司 | Manufacturing method for high-strength concrete pile |
| CN104230255A (en) * | 2014-08-22 | 2014-12-24 | 南通华柱水泥制品有限公司 | Process for producing high-strength tubular pile with weather-resistant property |
| CN111574185A (en) * | 2020-04-15 | 2020-08-25 | 福建省大地管桩有限公司 | Acid corrosion resistant concrete pipe pile and preparation method thereof |
| CN112479649A (en) * | 2020-11-18 | 2021-03-12 | 湖南大学 | Granite waste residue powder and silica fume synergistic modified recycled aggregate concrete and preparation method thereof |
| CN114804781A (en) * | 2022-05-25 | 2022-07-29 | 惠州市三环构件有限公司 | Durable PHC tubular pile concrete and PHC tubular pile |
| CN114804781B (en) * | 2022-05-25 | 2023-02-03 | 惠州市三环构件有限公司 | Durable PHC tubular pile concrete and PHC tubular pile |
| CN115557742A (en) * | 2022-10-27 | 2023-01-03 | 青岛青建新型材料集团有限公司 | Anti-falling concrete wall body layer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103274648B (en) | 2015-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105645895B (en) | A kind of ferronickel slag super high strength concrete and preparation method thereof | |
| CN102850011B (en) | Technological process for preparing active powder concrete by using iron tailing | |
| CN103274648B (en) | Granite stone powder doped high-strength concrete tubular pile and production method thereof | |
| CN104150840B (en) | C60 full-manufactured sand super high-rise pump concrete | |
| CN101445339B (en) | Debris concrete | |
| CN105753411B (en) | The method that regeneration concrete is prepared using waste concrete as raw material wet-grinding technology and relative device | |
| CN103159448B (en) | A kind of preparation method of the Artificial fish reef concrete material with slag as primary raw material | |
| CN102658596B (en) | Method for preparing high-strength concrete material by using fly ash and iron tailings | |
| CN101570037A (en) | Method for preparing construction material by utilizing electrolytic manganese slag | |
| CN102603233A (en) | Preparation method of high-durability prestressed centrifugal concrete pile | |
| CN102659373A (en) | High-performance corrosion-resisting concrete pile and preparation method thereof | |
| CN103434020A (en) | Production method of non-residual slurry non-autoclaved prestressed concrete pipe pile | |
| CN102320794A (en) | High-strength concrete prepared by sea sand | |
| CN107540285B (en) | Method for preparing finely ground glass powder building mortar by using waste oyster shells | |
| CN103755267A (en) | Sludge concrete and preparation method thereof | |
| CN105016675A (en) | Preparation method for high-mixing-amount waste-glass-powder self-compacting mortar with good volume stability | |
| CN108689659A (en) | A kind of construction refuse regenerated mixture of cement stabilizing and preparation method thereof | |
| CN101838128B (en) | Green environment cement-based composite material | |
| CN104418547A (en) | Concrete prefabricated pile and production method thereof | |
| CN103896531B (en) | Mix high-strength concrete tubular pile and the production method thereof of levigate rice hull ash | |
| CN104446211A (en) | Wall brick prepared by virtue of ready-mixed concrete waste slurry | |
| CN108083729A (en) | A kind of concrete being combined by slag as aggregate and preparation method thereof | |
| CN106316262A (en) | Process for preparing concrete with recycled coarse aggregates prepared by waste concrete | |
| CN107382112A (en) | A kind of composite gelled material | |
| CN101462302A (en) | Method for preparing concrete pipe material using metallurgy slag as principal raw material |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20170620 |