CN107572946A - A kind of solid netted thin-walled prefabricated components concrete construction match ratio - Google Patents
A kind of solid netted thin-walled prefabricated components concrete construction match ratio Download PDFInfo
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- CN107572946A CN107572946A CN201710640823.4A CN201710640823A CN107572946A CN 107572946 A CN107572946 A CN 107572946A CN 201710640823 A CN201710640823 A CN 201710640823A CN 107572946 A CN107572946 A CN 107572946A
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- prefabricated components
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Abstract
The present invention relates to a kind of solid netted thin-walled prefabricated components concrete construction match ratio, it is characterised in that：Using following raw material by weight proportion, stir and form by concrete mixer：Cement：300~350kg/m3；Sand：850~1000kg/m3；Rubble：950~1100kg/m3；5.0~6.0kg/m of high efficiency water reducing agent3；Water：180~200kg/m3.In work progress, vibrate conveniently, be less prone to the thin-walled prefabricated components that crackle, bubble are few, presentation quality is good, improve acceptable quality level, reduce engineering cost, the advantages that saving the duration.
Description
Technical field
The present invention relates to a kind of solid netted thin-walled prefabricated components concrete mix, the match ratio uses high sand coarse aggregate ratio, tool
Have good mobility, workability, be easy to jolt ramming, suitable for sectional dimension 40mm~65mm thin-wall member.
Background technology
" golden waterway " of the Changjiang river as national economic development, in waterway regulation works, being formed both has bank protection basis
Function, there is nature, ecology, landscape and the ecological revetment component for taking into account navigation channel water correction again, increasingly closed by society
Note.The utilization of solid netted thin-walled precast concrete, can meet waterway regulation works needs, and and can controls river regime simultaneously steady
Determine navigation channel border, ensure engineering ecology shore protection effect, but because solid netted thin-walled prefabricated components sectional dimension is small, be not easy to shake
Smash, the shortcomings of concrete bubble, crackle, presentation quality difference easily occur.
The content of the invention
The present invention provides one kind in work progress to solve technical problem present in known technology, convenience of vibrating,
It is less prone to the solid netted thin-walled prefabricated components concrete construction for the thin-walled prefabricated components that crackle, bubble are few, presentation quality is good
Match ratio.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：
A kind of solid netted thin-walled prefabricated components concrete construction match ratio, it is characterised in that：Using below by weight
The raw material of example, stir by concrete mixer and form：Cement：300~350kg/m3；Sand：850~1000kg/m3；
Rubble：950~1100kg/m3；5.0~6.0kg/m of high efficiency water reducing agent3；Water：180~200kg/m3。
The present invention can also use following technical measures：
Described strength of cement grade is P.O42.5R morning strong Portland cement；Specific surface area 300~
350m2/kg。
The modulus of fineness of sand sand in IIth area between 2.4~2.8, content of stone powder is 6%~12%；Clay content is small
In 3%.
The grain composition of the rubble is 5~20mm, and clay content is less than 1%, needle-like sheet-like particle content≤15%；Pass through
The rate that tails over of 1/2 maximum particle diameter should be 30%~60%.
Chloride ion content (accounting for cement weight percentage)≤0.02% in described high efficiency water reducing agent；Water-reducing rate >=14%；
Compressive strength rate：It is not less than within 1 day 140%, is not less than within 3 days 130%, is not less than within 7 days 125%, be not less than 120% within 28 days.
The pH value ＞ 4.0 of the water, chloride ＜ 2000mg/L in terms of Cl-；Sulphates content, by SO2No more than weight
0.22%.
The present invention has the advantages and positive effects of：Because the present invention has advantages below：
1st, the mixture that the present invention is formed has certain mobility, is easy to vibrate after entering mould.
2nd, the present invention uses 5~20mm continuous grading rubble, can ensure the workability of concrete.
3rd, the present invention is no more than 20mm rubble using maximum particle diameter, can ensure the maximum particle of crushed stone no more than component most
The 1/2 of small cross-sectional size.
4th, the present invention uses 45%~50% superelevation sand coarse aggregate ratio, can ensure the presentation quality of concrete, reduces bubble.
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, describe in detail such as
Under：
In order to solve the problems, such as concrete technology present in known technology, so as to reach above-mentioned purpose, the present invention relates to
And a kind of new concrete match ratio, it is characterised in that using the raw material such as sand, stone, cement, high efficiency water reducing agent, water mix
Into unit weight can reach 2300~2350kg/m3, various raw material usages are as follows：
Embodiment 1：
| Title material | Cement | Sand | Rubble | High efficiency water reducing agent | Water |
| Per square dosage (kg) | 318 | 899 | 947 | 5.73 | 187 |
By stirring, mixing time is ultimately formed and made according to standard method no less than 90 seconds various raw material
The length of side of maintenance is 150mm cube specimen, and 28d cubic compressive strengths are not less than 25MPa, the slump 70mm~
90mm mixture.
Embodiment 2：
| Title material | Cement | Sand | Rubble | High efficiency water reducing agent | Water |
| Per square dosage (kg) | 329 | 866 | 939 | 5.5 | 194 |
By stirring, mixing time is ultimately formed and made according to standard method no less than 90 seconds various raw material
The length of side of maintenance is 150mm cube specimen, and 28d cubic compressive strengths are not less than 25MPa, and the slump is in 70mm~90mm
Mixture.
Advantage:
1st, the mixture that the present invention is formed has certain mobility, is easy to vibrate after entering mould.
2nd, the present invention uses 5~20mm continuous grading rubble, can ensure the workability of concrete.
3rd, the present invention is no more than 20mm rubble using maximum particle diameter, can ensure the maximum particle of crushed stone no more than component most
The 1/2 of small cross-sectional size.
4th, the present invention uses 45%~50% superelevation sand coarse aggregate ratio, can ensure the workability of concrete, reduces bubble.
5th, the present invention is especially suitable for sectional dimension 40mm~65mm thin-wall member.
6th, using this match ratio, the presentation quality of prefabricated components can be improved, improve acceptable quality level, reduce engineering into
This, saves the duration.
It is described above to be only the preferred embodiments of the present invention, any formal limitation not is made to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (6)
- A kind of 1. solid netted thin-walled prefabricated components concrete construction match ratio, it is characterised in that：Using it is following by weight proportion Raw material, stir and form by concrete mixer：Cement：300~350kg/m3；Sand：850~1000kg/m3；It is broken Stone：950~1100kg/m3；5.0~6.0kg/m of high efficiency water reducing agent3；Water：180~200kg/m3。
- 2. solid netted thin-walled prefabricated components concrete construction match ratio according to claim 1, it is characterised in that：It is described Strength of cement grade be P.O42.5R morning strong Portland cement；Specific surface area is in 300~350m2/kg。
- 3. solid netted thin-walled prefabricated components concrete construction match ratio according to claim 1, it is characterised in that：It is described The modulus of fineness of sand sand in IIth area between 2.4~2.8, content of stone powder is 6%~12%；Clay content is less than 3%.
- 4. solid netted thin-walled prefabricated components concrete construction match ratio according to claim 1, it is characterised in that：It is described The grain composition of rubble is 5~20mm, and clay content is less than 1%, needle-like sheet-like particle content≤15%；Pass through 1/2 maximum particle diameter The rate that tails over should be 30%~60%.
- 5. solid netted thin-walled prefabricated components concrete construction match ratio according to claim 1, it is characterised in that：Chloride ion content (accounting for cement weight percentage)≤0.02% in described high efficiency water reducing agent；Water-reducing rate >=14%；Resistance to compression Intensity ratio：It is not less than within 1 day 140%, is not less than within 3 days 130%, is not less than within 7 days 125%, be not less than 120% within 28 days.
- 6. solid netted thin-walled prefabricated components concrete construction match ratio according to claim 1, it is characterised in that：The pH value ＞ 4.0 of the water, chloride is with Cl-Count ＜ 2000mg/L；Sulphates content, by SO2No more than weight 0.22%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640823.4A CN107572946A (en) | 2017-07-31 | 2017-07-31 | A kind of solid netted thin-walled prefabricated components concrete construction match ratio |
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| CN201710640823.4A CN107572946A (en) | 2017-07-31 | 2017-07-31 | A kind of solid netted thin-walled prefabricated components concrete construction match ratio |
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| CN107572946A true CN107572946A (en) | 2018-01-12 |
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| CN201710640823.4A Pending CN107572946A (en) | 2017-07-31 | 2017-07-31 | A kind of solid netted thin-walled prefabricated components concrete construction match ratio |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184093A (en) * | 2018-08-09 | 2019-01-11 | 成龙建设集团有限公司 | A kind of roofing flashing construction method and concrete central mix plant |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177019A (en) * | 2014-07-10 | 2014-12-03 | 燕山大学 | C50 self-compacting concrete for bridge and preparation method thereof |
-
2017
- 2017-07-31 CN CN201710640823.4A patent/CN107572946A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104177019A (en) * | 2014-07-10 | 2014-12-03 | 燕山大学 | C50 self-compacting concrete for bridge and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184093A (en) * | 2018-08-09 | 2019-01-11 | 成龙建设集团有限公司 | A kind of roofing flashing construction method and concrete central mix plant |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |
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| RJ01 | Rejection of invention patent application after publication |