CN104692714A - Self compact concrete and environmentally friendly slope protection member production technology - Google Patents
Self compact concrete and environmentally friendly slope protection member production technology Download PDFInfo
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- CN104692714A CN104692714A CN201310645461.XA CN201310645461A CN104692714A CN 104692714 A CN104692714 A CN 104692714A CN 201310645461 A CN201310645461 A CN 201310645461A CN 104692714 A CN104692714 A CN 104692714A
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Abstract
The invention discloses a self compact concrete and an environmentally friendly slope protection member production technology. The problems of color difference and pores of the appearance of a prefabricated cement member product due to common concrete cannot used to fill a complex closed die are solved in the invention. The components of concrete per unit volume comprise 320-350kg of cement, 150-180kg of fly ash, 900-950kg of river sand, 750-800kg of cobblestone, 4-6kg of a water reducer and 180-190kg of water. An environmentally friendly slope protection member is made through the steps of feeding, stirring, transporting, pouring, standing curing, steam curing, demolding and natural curing. The technology can be widely used to produce prefabricated concrete members, slightly increases the cost of production raw materials, reduces above 30% of the manpower cost, realizes no noises in production, makes the color difference of the prefabricated member products disappear, and reduces about 80% of surface pores.
Description
One, technical field
The invention belongs to building material field, relate in particular to the production technique of a kind of self-compacting concrete and environment-friendly type slope protecting components.
Two, background technology
The good view that environment-friendly type bank protection and green retaining wall have and the feature of environmental protection, can be widely used in multiple fields such as river course remold in all parts of the country, reservoir reconstruction, lake transformation, highway rebuilding, garden landscape, real estate community.Its view is very high to Total Product appearance requirement, must not have aberration, honeycomb, pitted skin, and must not there be a large amount of pore front and side.Because this mould structure is complicated, opening for feed is narrow, and vertical height is dark, and the product using normal concrete to produce, is difficult to reach above-mentioned requirements.This Die price is expensive simultaneously, and the attached vibrator used in existing production technique is large to mould damage, also can produce larger noise during vibratory compaction, and production technique is badly in need of improving.Meanwhile, common concrete can not meet the Production requirement of environment-friendly type bank protection, and this obtains checking in actual production.And self-compacting concrete (Self Compacting Concrete or Self-Consolidating Concrete is called for short SCC) refers under self gravitation effect, can flow, closely knit, also can filling template completely even if there is fine and close reinforcing bar, obtain fine uniformity simultaneously, and do not need the concrete of extraneous vibration.Therefore building the need of production of environment-friendly type bank protection to meet, being necessary to research and develop that a kind of serviceability is excellent, mobility is larger, the self-compacting concrete that shakes can be exempted from completely, by design science, reasonably production technique to meet the needs of manufacturing enterprise.
Three, summary of the invention
The object of the invention is for manufacturing enterprise provides a kind of batching science, with low cost, excellent property, can meet cement products outward appearance demand, can also oneself fill closely knit, without the need to the production technique of the additional self-compacting degree concrete placement environment-friendly type slope protecting components vibrated.
Technical scheme of the present invention is: self-compacting concrete is: cement 320kg ~ 350kg, flyash 150kg ~ 180kg, river sand 900kg ~ 950kg, stone 750kg ~ 800kg, water reducer 4kg ~ 6kg, water 180kg ~ 190kg.
Further, the component of cubic unit concrete content meter is: cement 325kg, flyash 175kg, river sand 935kg, stone 770kg, water reducer 5.5kg, water 185kg.
Wherein: river sand particle≤10mm, stone is 5 ~ 16mm continuous grading rubble.
The production technique that self-compacting concrete builds environment-friendly type slope protecting components comprises the steps:
(1) feed intake: in stirrer, drop into river sand successively, rubble, cement, flyash carries out dry mixing, require that its quality error is not more than 2% of theory of proportioning value;
(2) stir: in stirrer, throw in water reducer and water, churning time is 120s, terminate to stir after stirrer spindle motor current remains stable;
(3) transport: stir after terminating, discharging, arrive mould park by forklift transport hopper, scrap steel container need install dampening apparatus, prevents concrete disintegration Qinshui;
(4) build: hopper is adjusted to directly over mould, opens hopper, feed intake and build, require the even blanking of concrete, and its speed is unsuitable too fast, but be no more than 5 minutes and be advisable;
(5) rest: built rear covering waterproof cloth and to have rested 90 ~ 120min, made concrete by initial set;
(6) steam-cured: in waterproof cloth, logical steam carries out steam-cured, is warming up to 60 DEG C, is incubated 4 ~ 5h afterwards in 1h, open waterproof cloth cooling subsequently;
(7) demoulding: be no more than 5 DEG C with room temperature difference get final product the demoulding when mould and product temperature are down to, uses hanging to be separated with punching block by product;
(8) natural curing: product is transported to outdoor stacking place pile by fork truck, starts to carry out watering maintenance in 7 days, is finished product warehouse-in.
The invention has the beneficial effects as follows: owing to have employed the self-compacting concrete formula of science and advanced building production technique, not only simple to operate, save artificial, reduce energy consumption, can also eliminate while producing noise and reduce mould damage.Owing to the addition of flyash, instead of part of cement consumption, reduce material cost, concrete slurry viscosity is diminished, and the mobility of concrete mix is higher, more easily fills closely knit.Add water reducer, saved the consumption of gelling material, reduce production cost, improve concrete serviceability, make it the effect reaching self-compacting; Adding of water reducer reduces water-cement ratio, prevents concrete viscosity too little, and cement slurry is wrapped up in and do not lived bubble and emerge, and forms comparatively gross blow hole in product surface enrichment; Steam curing process can shorten demould time, the faster production cycle, improves mould utilization factor, strengthens early strength, reduces product breakage, the needs of the punching block cement prefabricated component manufacturing enterprise that applicable cost is higher.
Four, embodiment
Embodiment 1:
To prepare 1m
3self-compacting concrete is example, and its various material component is: cement 325kg, flyash 175kg, river sand 935kg, stone 770kg, water reducer 5.5kg, water 185kg.Wherein: cement is the P.O42.5R cement that century Xin Feng Leishan, Hubei Cement Co., Ltd produces, flyash is thermal power plant of Macheng, hubei Province city first level flour coal ash, river sand is Hubei Ba Hehe sand (screen out and be greater than 10mm particle), stone is 5 ~ 16 continuous grading rubbles, water reducer is the water reducer of the on-the-spot composite water-reducing rate 25% of Shanghai Hong Yun building material company limited, and mixing water is drinking public water supply.
The concrete making method that self-compacting concrete builds environment-friendly type slope protecting components is: in stirrer, first drop into river sand successively, rubble, cement, flyash carries out dry mixing, then in stirrer, water reducer and water is thrown in, stir 120s, after stirrer spindle motor current remains stable, terminating stirring, (the work in every Properties Control value through this self-compacting concrete of on-the-spot test after discharging is as follows: slump divergence >=650mm, T50≤5s, within V-type funnel 12s, within U-shaped case 20mm, specific experiment method is carried out with reference to JGJ/T283-2012).After stirring terminates, discharging, arrives mould park by forklift transport hopper, and scrap steel container installs vibration damping facility, prevents concrete disintegration Qinshui.Hopper is adjusted to directly over mould, opens hopper, feed intake and build, require the even blanking of concrete, and its speed is unsuitable too fast, but be no more than 5 minutes and be advisable.Build rear covering waterproof cloth to rest 90 ~ 120min, made concrete by initial set.The interior logical steam of the backward waterproof cloth of end of resting carries out steam-cured, is warming up to 60 DEG C, is incubated 4 ~ 5h afterwards, open waterproof cloth cooling subsequently in 1h.Be no more than 5 DEG C with room temperature difference get final product the demoulding when mould and product temperature are down to, use hanging to be separated with punching block by product.Product is transported to outdoor stacking place pile by fork truck, starts to carry out watering maintenance in 7 days, is finished product warehouse-in.
Embodiment 2:
To prepare 1m
3self-compacting concrete is example, and its various material component is: cement 350kg, flyash 150kg, river sand 910kg, stone 785kg, water reducer 5.5kg, water 190kg.Wherein: cement is the P.O42.5R cement that century Xin Feng Leishan, Hubei Cement Co., Ltd produces, flyash is thermal power plant of Macheng, hubei Province city second class powered coal ash, river sand is Hubei Ba Hehe sand (screen out and be greater than 10mm particle), stone is 5 ~ 16mm continuous grading rubble, water reducer is the water reducer of the on-the-spot composite water-reducing rate 25% of Shanghai Hong Yun building material company limited, and mixing water is drinking public water supply.Self-compacting concrete builds the concrete making method of environment-friendly type slope protecting components with embodiment 1.
Claims (6)
1. a self-compacting concrete, is characterized in that: with the component of cubic unit concrete content meter be: cement 320kg ~ 350kg, flyash 150kg ~ 180kg, river sand 900kg ~ 950kg, stone 750kg ~ 800kg, water reducer 4kg ~ 6kg, water 180kg ~ 190kg.
2. self-compacting concrete according to claim 1, is characterized in that: the component of cubic unit concrete content meter is: cement 325kg, flyash 175kg, river sand 935kg, stone 770kg, water reducer 5.5kg, water 185kg.
3. self-compacting concrete according to claim 1 and 2, is characterized in that: river sand particle≤10mm, and stone is 5 ~ 16mm continuous grading rubble.
4. self-compacting concrete builds a production technique for environment-friendly type slope protecting components, it is characterized in that: comprise the steps:
(1) feed intake: in stirrer, drop into river sand successively, rubble, cement, flyash carries out dry mixing, require that its quality error is not more than 2% of theory of proportioning value;
(2) stir: in stirrer, throw in water reducer and water, stir, terminate to stir after stirrer spindle motor current remains stable;
(3) transport: stir after terminating, discharging, arrive mould park by forklift transport hopper, scrap steel container need install dampening apparatus, prevents concrete disintegration Qinshui;
(4) build: hopper is adjusted to directly over mould, opens hopper, feed intake and build, require the even blanking of concrete, and its speed is unsuitable too fast or excessively slow, is advisable with 3 ~ 5 minutes;
(5) rest: built rear covering waterproof cloth and to have rested 90 ~ 120min, concrete has been reached or is about to reach initial set;
(6) steam-cured: in waterproof cloth, to carry out intensification steam-cured for logical steam, is incubated 4 ~ 5h afterwards, opens waterproof cloth subsequently and lower the temperature;
(7) demoulding: be no more than 5 DEG C with room temperature difference get final product the demoulding when mould and product temperature are down to, uses hanging to be separated with punching block by product;
(8) natural curing: product is transported to outdoor stacking place pile by fork truck, starts to carry out watering maintenance in 7 days, is finished product warehouse-in.
5. self-compacting concrete according to claim 4 builds the production technique of environment-friendly type slope protecting components, it is characterized in that: step (2) churning time is 120s.
6. the self-compacting concrete according to claim 4 or 5 builds the production technique of environment-friendly type slope protecting components, it is characterized in that: step (6) the steam-cured requirement that heats up is warming up to 60 DEG C in 1h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960088A (en) * | 2015-06-16 | 2015-10-07 | 乌海市公路工程有限公司 | Method for improving curve box girder appearance quality in high-temperature-difference region |
| CN105484280A (en) * | 2015-12-30 | 2016-04-13 | 安徽上能管桩混凝土有限公司 | Corrosion-resistance industrial factory building concrete cup opening prefabricated bearing platform |
| CN106977158A (en) * | 2017-04-26 | 2017-07-25 | 中交天航港湾建设工程有限公司 | A kind of prefabricated duplex monolith coordination in works and its manufacture craft |
| CN107759248A (en) * | 2017-10-18 | 2018-03-06 | 南宁积家市场建设有限公司 | A kind of maintenance process of light cellular partition board |
| CN107935486A (en) * | 2017-11-23 | 2018-04-20 | 嘉兴市鼎业新型建材有限公司 | A kind of high-performance color self-compacting concrete manufacture craft |
| CN108316321A (en) * | 2018-02-05 | 2018-07-24 | 湖北大合基业建材有限公司 | A kind of dankness type ecological revetment and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960088A (en) * | 2015-06-16 | 2015-10-07 | 乌海市公路工程有限公司 | Method for improving curve box girder appearance quality in high-temperature-difference region |
| CN105484280A (en) * | 2015-12-30 | 2016-04-13 | 安徽上能管桩混凝土有限公司 | Corrosion-resistance industrial factory building concrete cup opening prefabricated bearing platform |
| CN106977158A (en) * | 2017-04-26 | 2017-07-25 | 中交天航港湾建设工程有限公司 | A kind of prefabricated duplex monolith coordination in works and its manufacture craft |
| CN107759248A (en) * | 2017-10-18 | 2018-03-06 | 南宁积家市场建设有限公司 | A kind of maintenance process of light cellular partition board |
| CN107935486A (en) * | 2017-11-23 | 2018-04-20 | 嘉兴市鼎业新型建材有限公司 | A kind of high-performance color self-compacting concrete manufacture craft |
| CN108316321A (en) * | 2018-02-05 | 2018-07-24 | 湖北大合基业建材有限公司 | A kind of dankness type ecological revetment and preparation method thereof |
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Application publication date: 20150610 |