CN106193635A - A kind of xoncrete structure body of wall curing in the mold construction technology - Google Patents
A kind of xoncrete structure body of wall curing in the mold construction technology Download PDFInfo
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- CN106193635A CN106193635A CN201610544104.8A CN201610544104A CN106193635A CN 106193635 A CN106193635 A CN 106193635A CN 201610544104 A CN201610544104 A CN 201610544104A CN 106193635 A CN106193635 A CN 106193635A
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- wall
- structure body
- template
- xoncrete structure
- construction technology
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
Abstract
The invention discloses a kind of xoncrete structure body of wall curing in the mold construction technology, relate to the maintenance process field of concrete material, in order to solve to produce after existing concrete wall pours gap, the problem of seepage.The present invention uses template convered with film, carries out rapping in the specific time, carries out form removal after concreting completes maintenance 14 days, its can effective heat and moisture preserving, prevent wall crazing.The present invention is used for xoncrete structure body of wall maintenance, and it ensure that wall quality, reduces gap probability of occurrence, has higher economic benefit.
Description
Technical field
The present invention relates to the maintenance process of a kind of concrete material, specifically, relate to a kind of xoncrete structure body of wall band
Mould maintenance construction technique.
Background technology
At present, xoncrete structure body of wall maintenance is one of difficult point in building engineering construction, not only lacks the maintenance of specification
Construction technology, and in constructing, confusion is more.In order to speed up the work or template in unit in charge of construction's work progress at the scene
Turnover, generally shortly form removal after walls concrete final set, causes the situation of xoncrete structure wall crazing often to send out
Raw.Therefore, selecting rational maintenance method is the key link of xoncrete structure wall construction, is to control the table temperature difference in concrete
With internal temperature stress, the key that guarantees concrete wall final mass.For there being the xoncrete structure body of wall of seepage resistance demand, one
There is crack and is formed perfoliate in denier, will cause wall leakage, the internal reinforcing bar of corrosion, the serious carrying energy reducing structure
Power, the durability of crime of injuries by explosive substances to buildings and goods therein, causes greater loss to engineering construction.Therefore, either from quality safety angle, economic angle
Degree still uses angle, is all badly in need of a kind of body of wall maintenance method simply, effectively and reasonably to ensure executing of xoncrete structure body of wall
Working medium amount.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of xoncrete structure body of wall curing in the mold construction technology, and it can drop
The probability that low body of wall crackle occurs, it is ensured that the quality of body of wall.
Xoncrete structure body of wall curing in the mold construction technology of the present invention, comprises the following steps:
(1) fixed form, then in template, casting concrete forms body of wall；
(2) rapping: pour the thickness body of wall less than 1 meter, pine film in 18-31 hour after pouring, pour thickness more than 1 meter
Body of wall after pouring in 18-50 hour pine film；
(3) form removal: curing in the mold form removal after 14 days.
In prior art, concrete wall is after having poured, and generally requires periodically water spray, or brushing sealing compound enters
Row maintenance, not only complex steps, and relatively costly；Use maintaining process described herein, at special time rapping, tear open
Mould, it is not necessary to spray water again, brushing sealing compound to carry out maintenance, whole maintaining process operation simpler, save maintenance cost, and
Wall quality is good, and this maintenance process can reduce body of wall and the probability in gap occurs.And above-mentioned maintenance rapping time is continuous 5 days rings
Situation when border temperature averages is higher than 5 DEG C.
Further, in step (1), template surface does aluminum coated steel, template surface use Tai Er palm fibre film, domestic palm fibre film or
Black film does aluminum coated steel, and template thickness is 10-18mm.At the beginning of template construct, aluminum coated steel is done on the surface of template, in maintenance
Journey can keep the temperature of concrete wall, humidity, body of wall moisture loss will not be made too fast, body of wall temperature also will not be made to scatter and disappear
Too fast, in conjunction with the setting of template thickness condition, subsequent process without other maintenance measures, such as, need not wet curing, also without
Need brushing sealing compound maintenance.
Further, when within continuous 5 days, ambient temperature meansigma methods is not higher than 5 DEG C, template thickness is 15-18mm, in the case of being somebody's turn to do,
The rapping time determines according to the intensity measurement value of concrete wall test cube in the same condition: make concrete wall test cube in the same condition, examination
The size of block is 100mm × 100mm × 100mm, and the intensity measurement value of this test block reaches rapping during 1Mpa.
Further, when within continuous 5 days, ambient temperature meansigma methods is not higher than 5 DEG C, template selects the template that heat conductivity is low, as
Wooden agglutination formwork, bamboo plywood form, plastic formwork or styrofoam.
Further, rapping processes step and is: cap nut pine 1 ring that will tighten in template, does not do break the mold and processes, piece
Flitch is taked to overlap.
Compared with prior art, the invention has the beneficial effects as follows:
(1) maintenance process described herein, reduces the probability of occurrence in body of wall gap, the template of aluminum coated steel and pine
Mould, the control of striking time so that concrete wall is incubated in process of setting, moistening effect is good, gap probability of occurrence reduces,
Ensure that the quality of body of wall；
(2) maintenance process described herein, owing to reducing the probability that body of wall gap occurs, it is possible to be substantially reduced the later stage
Maintenance cost, it is also possible to avoid the part engineering caused because of wall quality to do over again, keep in repair and construction delay；Good in economic efficiency；
(3) in addition to strictly controlling rapping, striking time, it is not necessary to other maintenance processes, it is not necessary to wet curing, without brushing
Sealing compound, simple to operation, and maintenance water can be saved, good in economic efficiency.
Accompanying drawing explanation
Fig. 1 is concrete wall curing in the mold schematic diagram；
Wherein, 1-template；2-through-wall bolt；3-concrete wall.
Detailed description of the invention
With embodiment, the present invention is further explained below in conjunction with the accompanying drawings.
Embodiment 1
A kind of xoncrete structure body of wall curing in the mold construction technology, this concrete wall 3 is at ambient temperature is 20 ± 5 DEG C
Pouring, concrete wall 3 thickness poured is 0.6m, comprises the following steps:
(1) select overlay film complete template 1, use domestic palm fibre film overlay film bamboo plywood as template 1, described in Fig. 1,
Fixing template 1, then in template 1, casting concrete forms body of wall；Template 1 a size of 2440 × 1220 × 10mm；
(2) rapping: pine film in pouring latter 18-31 hour, also will tighten the cap nut of through-wall bolt 2 in template 1
Pine 1 ring, does not do break the mold and processes, and piece takes flitch to overlap；
(3) form removal: curing in the mold form removal after 14 days.
In this maintenance process, the rapping time is determined by following method the earliest:
Do two stifled experiment walls, concrete walls length 4.4 meters, wide 0.2 meter, high 1.4 meters, concrete strength be C30, C40 within the walls
Intermediate configurations monolayer C8 reinforced mesh, a diameter of 12mm of body of wall split bolt, unites in screw rod one end after additionally split bolt is fixing
One welding one cap nut.
Poured concrete and started timing, be respectively 10 at body of wall curing time, 12,14,16,18,20,22,24,26h
Time, choose 3 split bolts of body of wall bottom respectively, Screw arbor with nut at both-ends cap nut is unclamped, turns welding ends with torque wrench, survey
The moment of torsion that Screw arbor with nut at both-ends rotates must be made；Equally, choose 2 split bolts on body of wall top respectively, survey after corresponding time rapping
Obtain corresponding split bolt withdrawal resistance, prepare the withdrawal resistance relation curve of corresponding time.
Indwelling test block, and carry out cured under same condition.The 6 groups of test blocks of indwelling respectively of C30, C40 concrete, often group 3, exists respectively
Test block pour after the 16th, 18,20,22,24,26h test test block comprcssive strength.The comprcssive strength analyzing test block in early days increases,
Draw the test block pressure resistance intensity that the rapping time is corresponding the earliest.
The determination of rapping time the earliest mainly determines according to the following two kinds method, in two ways in the numerical value that obtains bigger
Person is 20 hours as rapping time the earliest, the such as time of rapping the earliest obtained according to method (1), and according to method (2)
Survey the time of rapping the earliest be 22 hours, then in maintaining process rapping time the earliest for pouring the 22nd hour afterwards, the latest
The rapping time is still for after pouring the 31st hour.
(1) determine with torque relationship formula according to withdrawal resistance
[F (t)] r ＞ Tmax
F (t) is the withdrawal resistance of a certain rapping time correspondence bolt；
R is the radius of Screw arbor with nut at both-ends；
TmaxThe peak torque of split bolt it is applied to for scene；
When meeting this formula, it can be determined that split bolt does not rotate, as long as now corresponding withdrawal resistance F (t) is more than
The withdrawal resistance relation curve of the corresponding time above the prepared withdrawal resistance when this curing time, can carry out rapping.
(2) record torque value when rotating according to experiment Screw arbor with nut at both-ends and on-the-spot rapping actual measurement torque value analysis determines
T1>0.4T
T1 is the moment of torsion recorded during Screw arbor with nut at both-ends rotation；
T is on-the-spot rapping actual measurement torque value；
When meeting this formula, Screw arbor with nut at both-ends will not rotate, and determines the rapping time the earliest with this.
Embodiment 2
A kind of xoncrete structure body of wall curing in the mold construction technology, this concrete wall 3 pours winter, and winter refers to
The meansigma methods of continuous 5 days ambient temperatures is not higher than 5 DEG C, and the thickness of wall body poured is 1.2m, comprises the following steps:
(1) selecting overlay film complete template 1, the bamboo plywood of employing Tai Er palm fibre film overlay film is as template 1, described in Fig. 1,
Fixing template 1, then in template 1, casting concrete forms body of wall；Template 1 a size of 2440 × 1220 × 18mm；
(2) rapping: the rapping time is determined by following method: make concrete wall 3 test cube in the same condition, this test block strong
Degree measured value reaches rapping during 1Mpa；The size of described concrete wall 3 test cube in the same condition is 100mm × 100mm × 100mm,
Rapping method is: by loose 1 ring of cap nut of the through-wall bolt 2 tightened in template 1, not doing break the mold and process, piece takes flitch
Overlap joint；
(3) form removal: curing in the mold form removal after 14 days.
Using concrete wall maintenance construction technique described herein, the construction quality of body of wall can be guaranteed, base
Originally solve In Great Basement body of wall and the common quality defect such as hollowing, crackle occurs, be greatly reduced basement wall simultaneously
Maintenance and maintenance cost.As a example by bay work is known in Qingdao and Huang Island, often repair 1 square metre of hollowing or crackle basement wall,
Labour cost, fee of material, machinery expense etc. need to be spent to add up to 20 yuan, this engineering basement wall area totally 10000 square metres, then can keep away
Exempt from economic loss about 200,000 yuan, remarkable in economical benefits.
Conventional engineering is not in place because of body of wall maintenance, often results in the quality problems such as wall crazing, seepage, in turn results in structure
Maintenance with the engineering such as waterproof, do over again and construction delay, make engineering suffer economic loss in various degree.With in girth 500m
The integral basement citing of isotactic die worker's journey, disregards foig, only considers the normal conditions of one wall vertical crack of 2m, several
The processing cost that the scheme of kind is occurred is the most as shown in table 1 below:
Table 1 different schemes processing cost is detailed
Fracture width ＜ 0.3mm, body of wall ne-leakage, it is only necessary to inner surface carries out general repairing treatment, combining of every crack
Closing renewal expense is 20 yuan, and processing cost needs 5000 yuan；
Fracture width >=0.3mm, the slight seepage of body of wall, inside body of wall, carry out polyurethane slip casting, slip casting along crack boring
Pitch of holes≤20cm, each hole comprehensive cost is 80 yuan, and every linear meter(lin.m.) expense is 80 × 100 ÷ 20=400 units；If only 1%
Crack-leakage palpus injecting treatment, is calculated by slip casting length 2m/ road, and the total cost that whole cracks carry out surface process is 7000
Unit；
As crack has a strong impact on structural safety, carry out merely waterproof slip casting and will cannot meet far away examination and use requirement,
According to the order of severity, the structure slip casting caused, repairing, waterproof slip casting, external wall waterproof do over again even structural strengthening, structure do over again with
And the process of structure detection will be greatly increased processing cost, cause serious financial consequences.
Using concrete wall maintenance construction technique described herein, the construction quality of body of wall can be guaranteed, warp
Ji remarkable benefit.
Claims (10)
1. an xoncrete structure body of wall curing in the mold construction technology, it is characterised in that comprise the following steps:
(1) fixed form, then in template, casting concrete forms body of wall；
(2) rapping: pour the thickness body of wall less than 1 meter, pine film in 18-31 hour after pouring, pour the thickness wall more than 1 meter
Body after pouring in 18-50 hour pine film；
(3) form removal: curing in the mold form removal after 14 days.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 1, it is characterised in that template in step
Aluminum coated steel is done on surface.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 2, it is characterised in that template surface makes
Aluminum coated steel is done with Tai Er palm fibre film, domestic palm fibre film or black film.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 1, it is characterised in that template thickness is
10-18mm。
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 4, it is characterised in that continuous 5 days rings
When border temperature averages is not higher than 5 DEG C, template (1) thickness is 15-18mm.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 5, it is characterised in that continuous 5 days rings
When border temperature averages is not higher than 5 DEG C, make concrete wall test cube in the same condition, when the intensity measurement value of this test block reaches 1Mpa
Rapping.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 6, it is characterised in that described concrete
The size of body of wall test cube in the same condition is 100mm × 100mm × 100mm.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 5, it is characterised in that in step (1),
When within continuous 5 days, ambient temperature is not higher than 5 DEG C, template selects the template that heat conductivity is low.
Xoncrete structure body of wall curing in the mold construction technology the most according to claim 8, it is characterised in that template selects wood
Glued mould, bamboo plywood form, plastic formwork or styrofoam.
10., according to the xoncrete structure body of wall curing in the mold construction technology described in claim 1～9 any claim, it is special
Levying and be, rapping processes step and is: cap nut pine 1 ring that will tighten in template, does not do break the mold and processes, and piece takes flitch to take
Connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610544104.8A CN106193635A (en) | 2016-07-12 | 2016-07-12 | A kind of xoncrete structure body of wall curing in the mold construction technology |
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| CN201610544104.8A CN106193635A (en) | 2016-07-12 | 2016-07-12 | A kind of xoncrete structure body of wall curing in the mold construction technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255226A (en) * | 2020-01-19 | 2020-06-09 | 上海建工四建集团有限公司 | Double-layer heat-insulation template |
| CN112593749A (en) * | 2020-12-08 | 2021-04-02 | 中铁八局集团有限公司 | Construction method of anti-seepage concrete of MBBR water treatment process structure |
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| JP2015168923A (en) * | 2014-03-05 | 2015-09-28 | 鹿島建設株式会社 | Method of manufacturing concrete structure, and concrete curing sheet |
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| JP2015168923A (en) * | 2014-03-05 | 2015-09-28 | 鹿島建設株式会社 | Method of manufacturing concrete structure, and concrete curing sheet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255226A (en) * | 2020-01-19 | 2020-06-09 | 上海建工四建集团有限公司 | Double-layer heat-insulation template |
| CN112593749A (en) * | 2020-12-08 | 2021-04-02 | 中铁八局集团有限公司 | Construction method of anti-seepage concrete of MBBR water treatment process structure |
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Application publication date: 20161207 |