CN107620469A - A kind of clear water concrete casting method - Google Patents
A kind of clear water concrete casting method Download PDFInfo
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- CN107620469A CN107620469A CN201710775000.2A CN201710775000A CN107620469A CN 107620469 A CN107620469 A CN 107620469A CN 201710775000 A CN201710775000 A CN 201710775000A CN 107620469 A CN107620469 A CN 107620469A
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- concrete
- clear water
- casting method
- water concrete
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Abstract
The invention discloses a kind of clear water concrete casting method, including step A, concrete to be lifted using hopper and be poured into mould；B, the cloth of prefabricating clear water concrete component, which pours, is divided into three layers, often completes one layer of cloth and pours, is once vibrated with attached vibrator；C, after the completion of all concretings of prefabricating clear water concrete component, shaken again with poker vibrator；D, after the completion of vibrating, carry out concrete and receive face for the first time, ensure that concrete surface is concordant with template；E, carry out second after 35 hours, after concrete initial set and receive face, compacted concrete；F, after last concrete final set, carry out concrete and carry light receipts face.With this method, comprehensive no dead angle is carried out using attached vibrator to concrete to vibrate, vibrated in conjunction with poker vibrator, concrete is uniformly closely knit, and concrete finished product component is linearly straight, fair and clear vision is in " minute surface ", the smooth exquisiteness of sense of touch is simple without any concrete appearance defect, this method step, it is easy to use, work well.
Description
Technical field
The present invention relates to field of civil engineering, more particularly to a kind of clear water concrete casting method.
Background technology
Clear-water concrete develops from the 1970s into China, because with the objective demand of green building, Ren Menhuan
The continuous improvement of consciousness is protected, the natural thought recovered one's original simplicity is rooted in the hearts of the people.It is well known that concrete surface water absorption rate is larger,
Concrete can gradually lose it in the environment of nature by being destroyed from sunlight, ultraviolet, acid rain, oil gas, greasy dirt etc.
Carry out appearance, concrete also can increasingly will be increasingly dirty by neutralisation and destruction, its surface effect with as long as the heaven and earth endure, influence to see
Look forward or upwards.So clear-water concrete 60% depends on the quality of concreting, 40% depends on the transparency protected spraying application in later stage,
But the transparency protected spraying application in later stage is similarly dependent on the quality of vibrating of concrete, from Japanese correlation on clear-water concrete
In discussion, clear-water concrete allows have bubble, but actually shows that bubble or stealthy air bubble content are too high, and the later stage is transparency protected
Quality have extreme influence.Reason is：Bubble position is outer small interior big form, and it protects ecto-entad, and it is protected
Shield can not cover whole, form unidirectional breathing self finish.
For prefabricated fair-faced concrete component installation location in coastal area, such as coastal bridge, bridge spanning the sea, man-made island
Small island etc., air humidity is larger, long-term rainfall, to the very harmful of concrete；It is prefabricated for appearance requirement is high, installation accuracy is high
Clear-water concrete component, traditional mode that pours waste time and energy, and efficiency is low.
The content of the invention
It is an object of the invention to overcome in the presence of prior art for prefabricated fair-faced concrete component installation location
In coastal area, such as coastal bridge, bridge spanning the sea, artificial island etc., air humidity is larger, long-term rainfall, to concrete
It is very harmful；For the prefabricated fair-faced concrete component that appearance requirement is high, installation accuracy is high, traditional pours the time-consuming expense of mode
Power, a kind of low above-mentioned deficiency of efficiency, there is provided clear water concrete casting method.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
A kind of clear water concrete casting method, comprises the following steps：
A, concrete is lifted using hopper and poured into mould；
B, the cloth of prefabricating clear water concrete component, which pours, is divided into three layers, often completes one layer of cloth and pours, uses attached vibrator
Once vibrated, prevent from resonating, damage template；
C, after the completion of all concretings of prefabricating clear water concrete component, shaken, aided in again with poker vibrator
Discharge bubble；
D, after the completion of vibrating, carry out concrete and receive face for the first time, ensure that concrete surface is concordant with template；
E, carry out second after 3-5 hours, after concrete initial set and receive face, compacted concrete；
F, after last concrete final set, carry out concrete and carry light receipts face.
Wherein, the attached vibrator is located at mold bottom, and its active force transmits from bottom to top.
Using a kind of clear water concrete casting method of the present invention, the attached vibrator uniform force, operation are utilized
It is convenient, comprehensive no dead angle is carried out to concrete and vibrated, makes prefabricating clear water concrete component installation top surface smooth closely knit, in conjunction with
Poker vibrator, component side bubble is eliminated, concrete is uniformly closely knit, and concrete finished product component is linearly straight, and vision is fair and clear
In " minute surface ", the smooth exquisiteness of sense of touch, without any concrete appearance defect, this method step is simple, easy to use, works well.
Preferably, when performing the step A, to prevent the drain hole of slurries from the hopper falls into remaining from not pouring mould
Plate, mould is impacted, form droplet-like outward appearance, protected in the drain hole adding mouth hood configuration.
Preferably, when performing the step B, the frequency of vibrating of the attached vibrator is 160-220Hz.
Preferably, before ready-mixed concrete, all concrete raw material moisture content are detected, adjusting construction according to moisture content matches somebody with somebody
Composition and division in a proportion.
Preferably, in concrete stirring production process, temperature is more than 35 DEG C, control temperature on the rocks.
Preferably, after the completion of concrete stirring, slump detection is carried out, it is 220-240 to control the slump.
Preferably, after concrete arrival pours scene, secondary slump detection is carried out to concrete, disqualified upon inspection then gives up
Abandon.
Preferably, concrete is transported using oilcloth parcel tank car.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
With a kind of clear water concrete casting method of the present invention, the attached vibrator uniform force, operation are utilized
It is convenient, comprehensive no dead angle is carried out to concrete and vibrated, makes prefabricating clear water concrete component installation top surface smooth closely knit, in conjunction with
Poker vibrator, component side bubble is eliminated, concrete is uniformly closely knit, and concrete finished product component is linearly straight, and vision is fair and clear
In " minute surface ", the smooth exquisiteness of sense of touch, without any concrete appearance defect, this method step is simple, easy to use, works well.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of clear water concrete casting method of the present invention.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.
Embodiment
As shown in figure 1, a kind of clear water concrete casting method of the present invention, comprises the following steps：
A, concrete is lifted using hopper and poured into mould, and control blowing is highly no more than 20cm, avoids concrete slurry big
Amount is spilt；
B, the cloth of prefabricating clear water concrete component, which pours, is divided into three layers, and every layer of cloth is poured no more than 30cm, often completes one layer
Cloth pours, and is once vibrated with attached vibrator, prevents from resonating, and damages template, and the attached vibrator is located at mould
Has bottom, its active force transmits from bottom to top；
C, after the completion of all concretings of prefabricating clear water concrete component, shaken again with poker vibrator, it is described
Poker vibrator is inserted pull out slowly soon, auxiliary discharge bubble；
D, after the completion of vibrating, carry out concrete and receive face for the first time, ensure that concrete surface is concordant with template；
E, carry out second after 4 hours, after concrete initial set and receive face, compacted concrete；
F, after last concrete final set, carry out concrete and carry light receipts face.
As a preferred scheme of the present embodiment, when performing the step A, to prevent slurries from the blowing of the hopper
Mouth falls into remaining non-formwork for placing, and mould is impacted, and forms droplet-like outward appearance, prevents in the drain hole adding mouth hood configuration
Shield.When performing the step B, the frequency of vibrating of the attached vibrator is 160-220Hz.
As a preferred scheme of the present embodiment, concrete grade C45,28 days intensity of design is C45, actual strength
C65, its standard cube concrete mix are as follows：
As a preferred scheme of the present embodiment, before ready-mixed concrete, all concrete raw material moisture content are detected,
Coordination in works is adjusted according to moisture content.Mixer is 3m3/ time, mixing time is not less than 120s.Concrete stirs production process
In, temperature is more than 35 DEG C, control temperature on the rocks.After the completion of concrete stirring, slump detection is carried out, it is 220- to control the slump
240；After concrete arrival pours scene, secondary slump detection is carried out to concrete, disqualified upon inspection is then discarded.Concrete is adopted
12m is wrapped up with oilcloth3Tank car is transported, and is controlled with reference to site technique, is poured more round concretings daily, existing to control
Field concreting is completed in 1h, and each transporter amount is no more than 6m3。
With a kind of clear water concrete casting method of the present invention, the attached vibrator uniform force, operation are utilized
It is convenient, comprehensive no dead angle is carried out to concrete and vibrated, makes prefabricating clear water concrete component installation top surface smooth closely knit, in conjunction with
Poker vibrator, component side bubble is eliminated, concrete is uniformly closely knit, and concrete finished product component is linearly straight, and vision is fair and clear
In " minute surface ", the smooth exquisiteness of sense of touch, without any concrete appearance defect, this method step is simple, easy to use, works well.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. a kind of clear water concrete casting method, it is characterised in that comprise the following steps：
A, concrete is lifted using hopper and poured into mould；
B, the cloth of prefabricating clear water concrete component, which pours, is divided into three layers, often completes one layer of cloth and pours, is carried out with attached vibrator
Once vibrate；
C, after the completion of all concretings of prefabricating clear water concrete component, shaken again with poker vibrator；
D, after the completion of vibrating, carry out concrete and receive face for the first time, ensure that concrete surface is concordant with template；
E, second is carried out after concrete initial set and receives face, compacted concrete；
F, after last concrete final set, carry out concrete and carry light receipts face.
2. a kind of clear water concrete casting method according to claim 1, it is characterised in that when performing the step A, to prevent
The drain hole of slurries from the hopper falls into remaining non-formwork for placing, and mould is impacted, and droplet-like outward appearance is formed, in the blowing
The hood configuration protection of mouth adding mouth.
3. a kind of clear water concrete casting method according to claim 1, it is characterised in that described attached when performing the step B
The frequency of vibrating for formula vibrator is 160-220Hz.
4. a kind of clear water concrete casting method according to claim 1, it is characterised in that before ready-mixed concrete, detect institute
There is concrete raw material moisture content, coordination in works is adjusted according to moisture content.
A kind of 5. clear water concrete casting method according to claim 1, it is characterised in that in concrete stirring production process,
Temperature is more than 35 DEG C, control temperature on the rocks.
6. a kind of clear water concrete casting method according to claim any one of 1-5, it is characterised in that concrete stirring is completed
Afterwards, slump detection is carried out, it is 220-240 to control the slump.
A kind of 7. clear water concrete casting method according to claim 6, it is characterised in that after concrete arrival pours scene,
Secondary slump detection is carried out to concrete, disqualified upon inspection is then discarded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775000.2A CN107620469A (en) | 2017-08-31 | 2017-08-31 | A kind of clear water concrete casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775000.2A CN107620469A (en) | 2017-08-31 | 2017-08-31 | A kind of clear water concrete casting method |
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| Publication Number | Publication Date |
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| CN107620469A true CN107620469A (en) | 2018-01-23 |
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ID=61088409
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| CN201710775000.2A Pending CN107620469A (en) | 2017-08-31 | 2017-08-31 | A kind of clear water concrete casting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824812A (en) * | 2018-06-11 | 2018-11-16 | 贵州建工集团第建筑工程有限责任公司 | A kind of cast-in-place fair-faced concrete wall pours and maintenance process |
| CN111502281A (en) * | 2020-04-27 | 2020-08-07 | 中天交通建设投资集团有限公司 | Municipal engineering clear water concrete pouring construction method |
-
2017
- 2017-08-31 CN CN201710775000.2A patent/CN107620469A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 蔡亚宁: ""清水混凝土技术在预制大跨距后张预应力T梁中的应用"", 《混凝土》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824812A (en) * | 2018-06-11 | 2018-11-16 | 贵州建工集团第建筑工程有限责任公司 | A kind of cast-in-place fair-faced concrete wall pours and maintenance process |
| CN111502281A (en) * | 2020-04-27 | 2020-08-07 | 中天交通建设投资集团有限公司 | Municipal engineering clear water concrete pouring construction method |
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Application publication date: 20180123 |
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