CN101906766B - Pore-forming method of compacted density test holes for thick-layer roller compacted concrete - Google Patents
Pore-forming method of compacted density test holes for thick-layer roller compacted concrete Download PDFInfo
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- CN101906766B CN101906766B CN2010102502767A CN201010250276A CN101906766B CN 101906766 B CN101906766 B CN 101906766B CN 2010102502767 A CN2010102502767 A CN 2010102502767A CN 201010250276 A CN201010250276 A CN 201010250276A CN 101906766 B CN101906766 B CN 101906766B
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- 239000011382 roller-compacted concrete Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 239000004567 concrete Substances 0.000 claims abstract description 67
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000004575 stone Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000005056 compaction Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a pore-forming method of compacted density test holes for thick-layer roller compacted concrete, comprising the following steps: pouring lower-cushion concrete or the roller compacted concrete, and then embedding a locating base on the poured lower-cushion concrete or the roller compacted concrete; installing a pore-forming steel tube on the embedded locating base; spreading the concrete, shielding a pipe orifice of the pore-forming steel tube when the spread concrete is slightly lower than the pipe orifice of the pore-forming steel tube, and continuously spreading the concrete; and after completing the concrete spreading, carrying out rolling compaction on the concrete, and then opening the shielded pore-forming steel tube after the concrete is compacted to finally obtain the density test holes. The pore-forming method of the compacted density test holes for the thick-layer roller compacted concrete of the invention ensures detection accuracy of compacted density for the thick-layer roller compacted concrete, shortens detection time of the compacted density for the thick-layer roller compacted concrete, accelerates construction progress for the thick-layer roller compacted concrete, and lowers construction cost for the roller compacted concrete.
Description
Technical field
The present invention relates to a kind of hole forming method of compacted density test holes for thick-layer roller compacted concrete, the hole forming method of particularly a kind of Hydraulic and Hydro-Power Engineering roller compacted concrete (being called for short RCC) dam compacted density test holes for thick-layer roller compacted concrete.
Background technology
Since the RCC dam construction technique have technology simple, full section, shortly intermittently construct continuously fast, characteristics such as cement consumption is few, compliance is strong, utilization rate of equipment and installations is high, degree of safety height and advantage and dam worker's the main flow dam type of becoming rapidly.Owing to be subjected to equipment to roll the restriction of effective depth, the traditional construction technology in RCC dam is to adopt the thin layer compaction technology of the thick about 35cm of stone, the thick about 30cm of compacting, and the density tester (meter) that adopts the detection degree of depth can only reach 30cm carries out the detection of concrete compacted density; In recent years, because grinding, the vertical vibration of exploitation can roll the thick-layer concrete, begin to carry out the application test that the concrete thick-layer rolls, its layer thickness is 54cm～108cm, compacted depth is 50cm～100cm, adopts single lever-type density tester (meter) or double rod type density tester (meter) that the thick-layer concrete of compacting is carried out Density Detection.
The RCC dam adopts the construction of thick-layer compaction technology, but accelerating construction progress, reduce construction cost, improve workmanship, but still there is bigger deficiency in the hole forming method in its compacted density detection hole at present: the detection hole of double rod type density tester (meter) is to utilize the punching of steel skewer to form, after concrete rolls in fact, a steel plate that has two holes is placed on the concrete surface that will detect, the steel cuttage is gone in the hole of steel plate, extremely need the degree of depth of detection by artificial hammering, transfer to the steel skewer then, punching can produce precompressed to the concrete between two holes, and after crooked chisel was transferred to from the hole, concrete a small amount of resilience of meeting or concrete between two holes were fallen in the hole, make two pitchs of holes dwindle or stop up, cause two fixing measuring staffs of spacing to be difficult to insert in addition can't patchhole in.The detection hole pore-forming of single lever-type density tester (meter) has two kinds of methods, a kind of method and double rod type detector (meter) basic identical (difference is only to need to make a call to a hole); Another kind method is after concrete rolls in fact, utilizes special equipment to hole, and imbeds steel pipe then, and boring pipe laying speed is slow, influences construction speed.It is more loosening that present in addition detection hole hole forming method makes hole week concrete produce when pore-forming, influences the accuracy in detection of concrete compacted density.The deficiency that these detect the hole hole forming method has restricted the development of thick-layer grinding concrete construction technology.
Summary of the invention
For addressing the above problem, the invention provides a kind of compacted density that can convenient and not influence thick-layer roller compacted concrete compacted density accuracy in detection and detect the hole hole forming method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of hole forming method of compacted density test holes for thick-layer roller compacted concrete may further comprise the steps:
1), finish build bottom blinding concrete or roller compacted concrete after, pre-buried positioning base on bottom blinding concrete of having built or roller compacted concrete;
2), the pore-forming steel pipe is installed on pre-buried positioning base;
3), carry out the concrete stone, when the concrete stone is lower slightly to the pore-forming steel pipe mouth of pipe, cover the mouth of pipe of pore-forming steel pipe, and proceed the concrete stone;
4), after the concrete stone finishes, concrete is rolled, treat the concrete compacting after, open the pore-forming steel pipe that covers, promptly obtain the Density Detection hole.
As improvement of the technical scheme, in the step 3), the steel pipe of screwing at pore-forming steel pipe mouth of pipe place is blocked a shot, and is used for covering in the mouth of pipe of pore-forming steel pipe, and in the block line hole of steel pipe block, put on the guiding draught line, guarantee stone and roll that the guiding draught line exposes outside the charge level in the process; In the step 4), guarantee to roll that the guiding draught line exposes outside the charge level in the process, treat the concrete compacting after, after finding the pore-forming steel pipe by the guiding draught line, the concrete on pore-forming steel pipe top is removed, and inserted by L shaped handle in the block line hole of steel pipe block, with the steel pipe block pore-forming steel pipe of back-outing.
As further improvement in the technical proposal, in the step, also have pre-buried positioning base by the fixing step of leveling of positioning bolt.
After finishing above-mentioned steps, the feeler of density tester (meter) is put into the pore-forming steel pipe, carry out the detection of different depth concrete compacted density on request.After thick-layer roller compacted concrete compacted density detected and finishes, injection pea gravel concreten or mortar were closely knit with the pore filling in the pore-forming steel pipe.
When adopting double rod type density tester (meter) when detecting, need bury two cover positioning bases, pore-forming steel pipe, steel pipe block and guiding draught line underground, and the spacing of pore-forming steel pipe should meet the spacing requirement of two feelers of double rod type density tester (meter), and the line of two pore-forming steel pipes is answered the direction of parallel concrete stone.
Beneficial effect of the present invention: thick-layer roller compacted concrete degree of compaction of the present invention detects the hole forming method in hole, guaranteed the accuracy that thick-layer roller compacted concrete compacted density detects, shortened the time that thick-layer roller compacted concrete compacted density detects, can accelerate thick-layer grinding concrete construction progress, reduce the grinding concrete construction expense.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the pore-forming schematic diagram that employing single lever-type density tester of the present invention (meter) detects thick-layer roller compacted concrete Density Detection hole;
Fig. 2 is the pore-forming schematic diagram that employing double rod type density tester of the present invention (meter) detects thick-layer roller compacted concrete Density Detection hole;
Fig. 3 is the back-out schematic diagram of steel pipe block of the L shaped handle of employing of the present invention;
Fig. 4 is a positioning base drawing of the present invention;
Fig. 5 is steel pipe block of the present invention and pore-forming steel pipe connection diagram.
The specific embodiment
Referring to figs. 1 through Fig. 5, the hole forming method of a kind of compacted density test holes for thick-layer roller compacted concrete of the present invention may further comprise the steps:
1), finish build bottom blinding concrete or roller compacted concrete 11 after, pre-buried positioning base 1 on bottom blinding concrete of having built or roller compacted concrete 11;
2), pore-forming steel pipe 3 is installed on pre-buried positioning base 1;
3), carry out the concrete stone, when the concrete stone is lower slightly to pore-forming steel pipe 3 mouths of pipe, cover the mouth of pipe of pore-forming steel pipe 3, and proceed the concrete stone;
4), after the concrete stone finishes, concrete is rolled, treat the concrete compacting after, open the pore-forming steel pipe 3 that covers, promptly obtain the Density Detection hole.
As preferred implementation of the present invention, in the step 3), the steel pipe of screwing at pore-forming steel pipe 3 mouth of pipe places blocks a shot 4, be used for covering in the mouth of pipe of pore-forming steel pipe 3, and in the block line hole 5 of steel pipe block 4, put on guiding draught line 6, guarantee stone and roll that guiding draught line 6 exposes outside the charge level in the process; In the step 4), assurance rolls the draught line 6 that leads in the process and exposes outside the charge level, after treating the concrete compacting, after finding pore-forming steel pipe 3 by guiding draught line 6, the concrete on pore-forming steel pipe 3 tops is removed, and insert by L shaped handle 7 in the block line hole 5 of steel pipes block 4, with the steel pipe block 4 pore-forming steel pipe 3 of back-outing.
In the step 1), also have pre-buried positioning base 1 is passed through the fixedly step of leveling of positioning bolt 2.
Among the present invention, positioning base 1 is drilled with locating hole by iron plate and have the short tube of interior tooth to be welded on the iron plate of positioning base, by the positioning bolt anchor on concrete surface.
Positioning bolt 2 can adopt the single ended bolt of reinforcement fabrication, also can adopt expansion bolt; It promptly works the positioning base 1 that fixes, and can carry out leveling to positioning base 1 again.
Positioning base 1 and pore-forming steel pipe 3 can adopt steel, also can adopt other not influence the material of accuracy of detection.
Pore-forming steel pipe 3 can adopt screwed connection with being connected of positioning base 1, and other can guarantee to connect firm and airtight and the connected mode of spillage not also can to adopt electric welding etc.; The top car of pore-forming steel pipe 3 has interior tooth.
To the vibration of pore-forming steel pipe 3, prevent the distortion and the displacement of pore-forming steel pipe 3 when rolling for alleviating vibrating roller, the top of steel pipe block 4 is cone or pyramid; The bottom of steel pipe block 4 is cylinder or the pipe that car has male thread, and steel pipe is blocked a shot and is drilled with a hole on 4 cones or the pyramid, wears guiding draught line and slotting L shaped handle 7 usefulness.
As preferably, guiding draught line 6 can adopt finer wire line, galvanized wire, cotton thread, plastic cord etc.
As preferably, L type handle 7 adopts reinforcement fabrications.
Below be an example of the present invention:
1, on blinding concrete of having built or bottom roller compacted concrete 11, imbed positioning bolt 2, and by positioning bolt 2 leveling positioning bases 1, the nut of screwing on then fixes positioning base 1 by the locating hole of positioning base 1.When adopting double rod type density tester (meter) to carry out Density Detection, answer pre-buried two positioning bases 1, the distance that positioning base is 1 is identical with the spacing of two feelers of density tester (meter); Close a position for helping the bulldozer pusher, the line of centres of two positioning bases 1 is parallel with concrete stone direction.
2, before the concrete stone, pore-forming steel pipe 3 and the positioning base of making 1 connected.As adopt double rod type density tester (meter) to carry out Density Detection, to guarantee that then two distances between the pore-forming steel pipe 3 are identical with the spacing of density tester (meter) two bar feelers.
3, concrete delamination stone and close a position lower slightlyly to pore-forming steel pipe 3 mouths of pipe, the stone process is avoided tipping truck and bulldozer collision pore-forming steel pipe 3.
4, steel pipe block 4 is tightened on the pore-forming steel pipe 3, prevents that concrete from entering pore-forming steel pipe 3 and causing plug-hole.
5, the draught line 6 that will lead passes block line hole 5 on the steel pipe block 4.
6, concrete continues stone, closes a position to the thickness of designing requirement, and this process guarantees that guiding draught line 6 is all on concrete surface.
7, adopt vibrating roller pass and direction on request that concrete is rolled, this process also will guarantee to lead draught line 6 all on concrete surface.
8, after concrete rolls and finishes, find pore-forming steel pipe 3 positions according to guiding draught line 5.
9, the concrete that about 10cm is thick in pore-forming steel pipe 3 mouth of pipe top radius 15cm scopes is removed, exposed pore-forming steel pipe 3 and steel pipe block 4, the draught line 6 that will lead is extracted out from block line hole 5, and removes the concrete grout that is pressed in the block line hole 5.
10, L shaped handle 7 is inserted block line hole 5, steel pipe block 4 is back-outed.
11, the feeler of density tester (meter) is put into pore-forming steel pipe 3, carry out Density Detection.
12, detect the back and in pore-forming steel pipe 3, filled out pea gravel concreten or mortar fills up pore-forming steel pipe 3.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (2)
1. the hole forming method of a compacted density test holes for thick-layer roller compacted concrete is characterized in that, may further comprise the steps:
1), finish build bottom blinding concrete or roller compacted concrete after, pre-buried positioning base (1) on bottom blinding concrete of having built or roller compacted concrete;
2), go up installation pore-forming steel pipe (3) at pre-buried positioning base (1);
3), carry out the concrete stone, at the concrete stone to pore-forming steel pipe (3) the steel pipe block (4) of screwing at pore-forming steel pipe (3) mouth of pipe place when mouth of pipe is lower slightly, be used for covering in the mouth of pipe of pore-forming steel pipe (3), and proceed the concrete stone, and in the block line hole (5) of steel pipe block (4), put on guiding draught line (6), the draught line (6) that guarantees to lead in the stone process exposes outside the charge level;
4) after, the concrete stone finishes, concrete is rolled, assurance rolls the draught line (6) that leads in the process and exposes outside the charge level, after treating the concrete compacting, after finding pore-forming steel pipe (3), the concrete on pore-forming steel pipe (3) top is removed, and inserted by L shaped handle (7) in the block line hole (5) of steel pipe block (4) by guiding draught line (6), with steel pipe block (4) the pore-forming steel pipe (3) of back-outing, promptly obtain the Density Detection hole.
2. the hole forming method of compacted density test holes for thick-layer roller compacted concrete according to claim 1 is characterized in that: in the step 1), also have pre-buried positioning base (1) is passed through the fixedly step of leveling of positioning bolt (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102502767A CN101906766B (en) | 2010-08-10 | 2010-08-10 | Pore-forming method of compacted density test holes for thick-layer roller compacted concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102502767A CN101906766B (en) | 2010-08-10 | 2010-08-10 | Pore-forming method of compacted density test holes for thick-layer roller compacted concrete |
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| Publication Number | Publication Date |
|---|---|
| CN101906766A CN101906766A (en) | 2010-12-08 |
| CN101906766B true CN101906766B (en) | 2011-11-16 |
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| CN2010102502767A Expired - Fee Related CN101906766B (en) | 2010-08-10 | 2010-08-10 | Pore-forming method of compacted density test holes for thick-layer roller compacted concrete |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115015110B (en) * | 2022-06-23 | 2023-07-21 | 中交二航武汉港湾新材料有限公司 | Foam light soil layering detection device and detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105068U (en) * | 1991-10-23 | 1992-05-20 | 陕西省公安局 | Formed hole drawing tube used for ultrosonic detecting quality of pile base |
| CN201250397Y (en) * | 2008-09-03 | 2009-06-03 | 安徽省水利水电勘测设计院 | Concrete anti-seepage wall with quality inspection coring pipes |
| CN101666110A (en) * | 2009-09-25 | 2010-03-10 | 陈伟明 | Waterproof leak receiver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3908752B2 (en) * | 2004-05-06 | 2007-04-25 | 株式会社竹中工務店 | Strain and settlement measurement method for pile vertical loading test |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2105068U (en) * | 1991-10-23 | 1992-05-20 | 陕西省公安局 | Formed hole drawing tube used for ultrosonic detecting quality of pile base |
| CN201250397Y (en) * | 2008-09-03 | 2009-06-03 | 安徽省水利水电勘测设计院 | Concrete anti-seepage wall with quality inspection coring pipes |
| CN101666110A (en) * | 2009-09-25 | 2010-03-10 | 陈伟明 | Waterproof leak receiver |
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| CN101906766A (en) | 2010-12-08 |
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Granted publication date: 20111116 |