CN104803643A - Novel non-autoclaved high-strength concrete tubular pile and curing method thereof - Google Patents
Novel non-autoclaved high-strength concrete tubular pile and curing method thereof Download PDFInfo
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- CN104803643A CN104803643A CN201510164475.9A CN201510164475A CN104803643A CN 104803643 A CN104803643 A CN 104803643A CN 201510164475 A CN201510164475 A CN 201510164475A CN 104803643 A CN104803643 A CN 104803643A
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Abstract
The invention discloses a novel non-autoclaved high-strength concrete tubular pile and a curing method thereof, and relates to the technical field of tubular pile production. The tubular pile is characterized by comprising the following raw materials in parts by weight: 3.2-5.1 parts of a polycarboxylate superplasticizer PCA-V, 375-393 parts of cement, 665-684 parts of sand, 1375-1385 parts of stone, 41-45 parts of mineral admixture HDC, 0-160 parts of SiO2, 0.5-2.3 parts of a powdery naphthalene water reducer JMB, and 105-115 parts of water, wherein the polycarboxylate superplasticizer is specially used for tubular pile production. According to the method provided by the invention, the method in which the polycarboxylic admixture and the mineral admixture special for tubular pile production are used is adopted, the requirement of tubular pile concrete strength grade C80 can be met through the same normal-temperature steaming manner, the secondary high-pressure curing procedure is eliminated, manpower and material resources consumed for steam combustion are reduced, and the energy conservation and emission reduction are achieved.
Description
Technical field:
The present invention relates to tubulose production technical field, specifically a kind of Novel free steam pressure high-strength concrete pipe pile and maintenance process thereof.
Background technology:
In recent years, because national economic development is fast-developing, make prestressed high-strength concrete pile industry development very fast, pile tube enterprise from Guangdong, Fujian, Jiangsu, the coastal cities such as Tianjin progressively upcountry develop.By 2014, there was family of pile tube manufacturing enterprise more than 800 in the whole nation, became worldwide production, applied the maximum country of PHC pile tube.The annual production of PHC pile tube breaks through 400,000,000 meters, and every annual value of production breaks through 40,000,000,000 yuans.
At present, PHC pile tube generally adopts the two-part maintaining process of atmospheric steam curing and autoclave curing, and pile tube arrives intensity of dispatching from the factory within a curing cycle.Wherein atmospheric steam curing carries out under 80-90 DEG C of condition, and autoclave curing carries out under the condition of 0.9-1.0Mpa, 170-180 DEG C.In PHC tubular pile production process, steam-cured process energy consumption occupies 90% of total energy consumption in pile tube production, and autoclave curing accounts for wherein more than 80%.There are some researches show, the concrete durability through high-pressure steaming and cultivating declines obviously, and therefore, the pressure steaming technique of exempting from realizing PHC pile tube has great significance for energy-saving and emission-reduction.
Summary of the invention:
Technical problem to be solved by this invention is to provide a kind of energy-saving and emission-reduction, uses manpower and material resources sparingly, without the need to carrying out Novel free steam pressure high-strength concrete pipe pile and the maintenance process thereof of autoclave curing.
Solve technical problem adopt following technical scheme:
A kind of Novel free steam pressure high-strength concrete pipe pile, is characterized in that: comprise following raw material,
Polycarboxylate water-reducer PCA-V, weight part is 3.2 ~ 5.1;
Cement: P, II52.5 level, weight part is 375 ~ 393;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 665 ~ 684;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1375 ~ 1385;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400m
2/ kg, weight part is 41 ~ 45;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 0.5 ~ 2.3;
Water: weight part is 105 ~ 115.
A kind of Novel free steam pressure high-strength concrete pipe pile, preferred technical scheme, raw material is
Polycarboxylate water-reducer PCA-V, weight part is 4.3;
Cement: P, II52.5 level, weight part is 387;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 678;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1380;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400m
2/ kg, weight part is 43;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 1.3.
Water: weight part is 110.
Described polycarboxylate water-reducer is that pile tube produces special polycarboxylate water-reducer.
A maintenance process for Novel free steam pressure high-strength concrete pipe pile, is characterized in that: carry out atmospheric steam curing to the concrete tubular pile after shaping.
Described concrete adopts the mono-horizontal axis forced mixer of 60L to stir 120S, and concrete slump controls at 30-60mm, and air content controls below 3%.
The invention has the beneficial effects as follows: the present invention uses the method changing special pile tube production polycarboxylic admixture and mineral admixture, the requirement that mode can reach tubular pile concrete strength grade C80 is steamed through same normal temperature, and decrease the program of secondary high-pressure maintenance, decrease the man power and material that fired combustion steam consumes simultaneously, accomplish the effect of energy-saving and emission-reduction.
Embodiment:
The technique means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific examples, setting forth the present invention further.
Embodiment 1
A kind of Novel free steam pressure high-strength concrete pipe pile, comprises following raw material,
Polycarboxylate water-reducer PCA-V, weight part is 3.2;
Cement: P, II52.5 level, weight part is 375;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 665;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1375;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400m
2/ kg, weight part is 41;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0;
Powdery naphthalene water reducer JMB, weight part is 0.5;
Water: weight part is 105.
Polycarboxylate water-reducer is that pile tube produces special polycarboxylate water-reducer.
A maintenance process for Novel free steam pressure high-strength concrete pipe pile, carries out atmospheric steam curing to the concrete tubular pile after shaping.Concrete adopts the mono-horizontal axis forced mixer of 60L to stir 120S, and concrete slump controls at 30-60mm, and air content controls below 3%.
Embodiment 2
A kind of Novel free steam pressure high-strength concrete pipe pile, raw material is
Polycarboxylate water-reducer PCA-V, weight part is 4.3;
Cement: P, II52.5 level, weight part is 387;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 678;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1380;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400m
2/ kg, weight part is 43;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 1.3.
Water: weight part is 110.
Polycarboxylate water-reducer is that pile tube produces special polycarboxylate water-reducer.
A maintenance process for Novel free steam pressure high-strength concrete pipe pile, carries out atmospheric steam curing to the concrete tubular pile after shaping.Concrete adopts the mono-horizontal axis forced mixer of 60L to stir 120S, and concrete slump controls at 30-60mm, and air content controls below 3%.
Embodiment 3
A kind of Novel free steam pressure high-strength concrete pipe pile, is characterized in that: comprise following raw material,
Polycarboxylate water-reducer PCA-V, weight part is 5.1;
Cement: P, II52.5 level, weight part is 393;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 684;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1385;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400m
2/ kg, weight part is 45;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 2.3;
Water: weight part is 115.
Polycarboxylate water-reducer is that pile tube produces special polycarboxylate water-reducer.
A maintenance process for Novel free steam pressure high-strength concrete pipe pile, carries out atmospheric steam curing to the concrete tubular pile after shaping.Concrete adopts the mono-horizontal axis forced mixer of 60L to stir 120S, and concrete slump controls at 30-60mm, and air content controls below 3%.
Use special polycarboxylate water-reducer to carry out PHC tubular pile concrete and exempt from pressure steaming test, and carry out performance comparison with the concrete of conventional pile tube technique.The concrete mix that test adopts is in table 1.
Table 1 concrete mix
Test-results is in table 2
The concrete steam-cured intensity of table 2
Conclusion: use the method changing special pile tube production polycarboxylic admixture and mineral admixture, the requirement that mode can reach tubular pile concrete strength grade C80 is steamed through same normal temperature, and decrease the program of secondary high-pressure maintenance, decrease the man power and material that fired combustion steam consumes simultaneously, accomplish the effect of energy-saving and emission-reduction.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a Novel free steam pressure high-strength concrete pipe pile, is characterized in that: comprise following raw material,
Polycarboxylate water-reducer PCA-V, weight part is 3.2 ~ 5.1;
Cement: P, II52.5 level, weight part is 375 ~ 393;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 665 ~ 684;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1375 ~ 1385;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400 ㎡/kg, and weight part is 41 ~ 45;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 0.5 ~ 2.3;
Water: weight part is 105 ~ 115.
2. a kind of Novel free steam pressure high-strength concrete pipe pile according to claim 1, is characterized in that: described raw material is
Polycarboxylate water-reducer PCA-V, weight part is 4.3;
Cement: P, II52.5 level, weight part is 387;
Sand: river sand, grating meet the requirement of II district, fineness modulus 2.4-3.1, weight part is 678;
Stone: the carbon stone of 5-20mm continuous grading, crush values is less than 9%, and weight part is 1380;
Mineral admixture HDC:1d activity index is greater than 120%, 28d activity index and is greater than 105%, and specific surface area is greater than 400 ㎡/kg, and weight part is 43;
SiO
2: the levigate quartz sand that resultant is greater than 90%, weight part is 0 ~ 160;
Powdery naphthalene water reducer JMB, weight part is 1.3.
Water: weight part is 110.
3. a kind of Novel free steam pressure high-strength concrete pipe pile according to claim 1, is characterized in that: described polycarboxylate water-reducer is that pile tube produces special polycarboxylate water-reducer.
4. the maintenance process of a kind of Novel free steam pressure high-strength concrete pipe pile according to claim 1 and 2, is characterized in that: carry out atmospheric steam curing to the concrete tubular pile after shaping.
5. the maintenance process of a kind of Novel free steam pressure high-strength concrete pipe pile according to claim 3, it is characterized in that: concrete adopts the mono-horizontal axis forced mixer of 60L to stir 120S, concrete slump controls at 30-60mm, and air content controls below 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164475.9A CN104803643A (en) | 2015-04-08 | 2015-04-08 | Novel non-autoclaved high-strength concrete tubular pile and curing method thereof |
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| CN201510164475.9A CN104803643A (en) | 2015-04-08 | 2015-04-08 | Novel non-autoclaved high-strength concrete tubular pile and curing method thereof |
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| CN104803643A true CN104803643A (en) | 2015-07-29 |
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| CN201510164475.9A Pending CN104803643A (en) | 2015-04-08 | 2015-04-08 | Novel non-autoclaved high-strength concrete tubular pile and curing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236843A (en) * | 2015-08-24 | 2016-01-13 | 安徽砼宇特构科技有限公司 | Antibacterial underground pipe culvert and preparation method thereof |
| CN111763042A (en) * | 2020-06-09 | 2020-10-13 | 浙江金鑫管桩有限公司 | Non-autoclaved PHC concrete pipe pile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1090892B1 (en) * | 1998-06-04 | 2011-01-19 | Denki Kagaku Kogyo Kabushiki Kaisha | High-temperature, high-pressure underwater concrete product curing device and curing method for concrete product using the curing device |
| CN102979085A (en) * | 2012-12-05 | 2013-03-20 | 广东三和管桩有限公司 | Pressure steam curing-free prestressed high-strength concrete pipe pile and method for producing same |
| CN104291757A (en) * | 2014-09-29 | 2015-01-21 | 华南理工大学 | Non-autoclaved PHC (Pre-stressed High-strength Concrete) tubular pile suitable for corrosive environment |
-
2015
- 2015-04-08 CN CN201510164475.9A patent/CN104803643A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1090892B1 (en) * | 1998-06-04 | 2011-01-19 | Denki Kagaku Kogyo Kabushiki Kaisha | High-temperature, high-pressure underwater concrete product curing device and curing method for concrete product using the curing device |
| CN102979085A (en) * | 2012-12-05 | 2013-03-20 | 广东三和管桩有限公司 | Pressure steam curing-free prestressed high-strength concrete pipe pile and method for producing same |
| CN104291757A (en) * | 2014-09-29 | 2015-01-21 | 华南理工大学 | Non-autoclaved PHC (Pre-stressed High-strength Concrete) tubular pile suitable for corrosive environment |
Non-Patent Citations (1)
| Title |
|---|
| 张建纲等: "PHC管桩混凝土免压蒸技术研究", 《混凝土与水泥制品》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236843A (en) * | 2015-08-24 | 2016-01-13 | 安徽砼宇特构科技有限公司 | Antibacterial underground pipe culvert and preparation method thereof |
| CN111763042A (en) * | 2020-06-09 | 2020-10-13 | 浙江金鑫管桩有限公司 | Non-autoclaved PHC concrete pipe pile |
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Application publication date: 20150729 |