CN102923996A - CA (Cement and Asphalt) mortar for pouring floor of multi-storied factory building and manufacture process of CA mortar - Google Patents
CA (Cement and Asphalt) mortar for pouring floor of multi-storied factory building and manufacture process of CA mortar Download PDFInfo
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- CN102923996A CN102923996A CN2012103856895A CN201210385689A CN102923996A CN 102923996 A CN102923996 A CN 102923996A CN 2012103856895 A CN2012103856895 A CN 2012103856895A CN 201210385689 A CN201210385689 A CN 201210385689A CN 102923996 A CN102923996 A CN 102923996A
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Abstract
The invention relates to a CA (Cement and Asphalt) mortar for pouring a floor of a multi-storied factory building and a manufacture process of the CA mortar. The CA mortar for pouring the floor of the multi-storied factory building is a mixture consisting of 1000-1500 parts by weight of CA mortar dry mash, 250-500 parts of emulsified asphalt, 15-170 parts of water and 2.0-7.0 parts of an additive. The CA mortar has the beneficial effects that the characteristic of the property of the CA mortar can be extended, a formula is regulated according to the specific factory building so as to optimize a shockproof index; and compared with the traditional shockproof structure design of the factory building, the CA mortar has the advantages that the construction progress can be effectively accelerated and the construction cost is reduced.
Description
Technical field
The present invention designs the cushioning material in a kind of engineering, the especially a kind of perfusion of multi storied factory building floor layer CA mortar and manufacture craft thereof.
Background technology
As the buffering packing material of buffer layer, answer existing certain elasticity, certain intensity is arranged again.Strength of cement mortar is enough high, but elasticity is not enough, the pitch good springiness, but intensity is low, temperature influence is large, therefore adopted the cement asphalt mortar with the two combination, it is the CA mortar, it is generally by emulsified bitumen, water, cement, fine aggregate, the compositions such as various admixtures are the elastic a kind of semi-rigid mortars with concrete rigidity and pitch, and its major function is as adjusting layer, fill the space between panel and the concrete foundation structural sheet, satisfy the needs that the construction of precast slab and field panel is laid, on the other hand, this adjustment layer can be provided by the elastic buffer effect that provides board-like surface layer certain.
It is the new design method that present multi storied factory building Aseismatic Design proposes that floor layer is implanted the CA mortar, because the closely knit serviceability characteristics with need not to vibrate of CA mortar Self-leveling, in construction process, save machinery and electric power energy consumption, labor savings, therefore reduced construction cost, shortened the construction period, can allow the owner obtain in advance returns of investment.The CA mortar has the characteristics of high elastic coefficient, has good damping effect, can obviously reduce the sound pollution of multi storied factory building, when improving same bearer power and cushioning ability, but the economical with materials consumption alleviates structural weight per square meter, and the while is because of the advantage of its high tenacity, high-durability, the later maintenance expense reduces greatly, and every square metre CA mortar cost can be saved about 100 yuan with the cost contrast of the additional damping modes of tradition.
Patent CN102173628A provides a kind of can effectively reduce reducing composite additive, its application and comprising its CA mortar of CA mortar bleeding.The invention discloses and a kind ofly can effectively reduce reducing composite additive and comprising its CA mortar of CA mortar bleeding.The described compounding sea that reduces that can effectively reduce CA mortar bleeding adds agent, comprise false MgO25% ~ 55% that burns of CaO grog 45% ~ 75% and low temperature, described per-cent is mass percent: it is 1% ~ 4% that the described compounding sea that can effectively reduce CA mortar bleeding adds agent shared mass percent in the CA mortar drier.Comprise the CA mortar that this sea adds agent, bleeding rate is low, resolution is little, frost resistance is good, and the volumetric shrinkage of CA mortar middle and later periods is had obvious compensating action.
Patent CN102070354A provides a kind of preparation method of CRTS II plate-type non-fragment orbit CA mortar.The invention discloses a kind of preparation method of CRTSII plate-type non-fragment orbit CA mortar, comprise following steps: (1) is mixed in proportion cement, fine sand, swelling agent and aluminium powder and prepares the CA mortar dry powder; (2) in water, add successively high performance water reducing agent of polyocarboxy acid, defoamer and silicon sol, stir evenly: add the CA mortar dry powder, stir evenly; Add bitumen emulsion, namely obtain described CRTSII plate-type non-fragment orbit CA mortar after stirring.Beneficial effect of the present invention is mainly reflected in: (1) can avoid cement granules to the competitive adsorption of emulsifying agent in the emulsified bitumen, prevents the emulsified bitumen breakdown of emulsion in the CA mortar, the bleeding phenomenon occurs; (2) can guarantee to reduce Asphalt emulsion content and water consumption on the mobile basis, satisfy CA mortar Young's modulus basis raising CA mortar strength.
Patent CN102010163A provides a kind of CRTSII plate-type non-fragment orbit CA mortar, has better serviceability and pressure-proof and snap-resistent intensity.CRTSII plate-type non-fragment orbit CA mortar is intended to make it to have better work, blank look and pressure-proof and snap-resistent intensity.This emulsified bitumen in emulsion process in admixture enter that the folding of CA mortar cement is measured admittedly is 0.13～0.22% polycarboxylate water-reducer, enter at emulsified bitumen, mortar mix ground process China and foreign countries admixture that the folding of CA mortar cement is measured admittedly is 0.21～0.22% trimerization eyeball ammonia water reducer.The invention has the beneficial effects as follows, divergence and the fluidity loss of mortar are less, and the CA mortar has good serviceability; Effective Raise ultimate compression strength and the folding strength of CA mortar.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of perfusion of multi storied factory building floor layer CA mortar and manufacture craft thereof are provided.
The present invention solves the technical scheme that its technical problem adopts: this multi storied factory building floor layer perfusion CA mortar, the mixture that it is comprised of CA dry mortar powder, emulsified bitumen, water and admixture, each component concentration is calculated as with parts by weight in the mixture: the CA dry mortar powder: 1000～1500 parts; Emulsified bitumen: 250～500 parts; Water: 15～170 parts; Admixture: 2.0～7.0 parts.
As preferably, the mixture that described CA dry mortar powder is comprised of following component raw material, each component concentration is calculated as with parts by weight in the mixture: cement: 500～600 parts; Flyash: 50～100 parts; Swelling agent: 40～60 parts; Aluminium powder: 0.1～0.2 part; Polypropylene fibre: 15～40 parts; Fine aggregate: 750～900 parts; Ether of cellulose: 0.1～0.3 part; Wooden sodium sulfonate: 0.1～0.2 part; Rubber powder: 0.1～0.2 part.
As preferably, the mixture that described admixture is comprised of following component chemical component, each component concentration is take listed as parts by weight as polycarboxylate water-reducer: 1.5～4.0 parts in the mixture; Silicone antifoam agent: 0.5～2.0 part; Air entrapment agent: 0.5～1.5 part.
A kind of multi storied factory building floor layer perfusion manufacture craft of CA mortar, its step comprises: add successively polycarboxylate water-reducer, silicone antifoam agent and air entrapment agent in water and emulsified bitumen, stir 30～45s stirring under the speed of 30～60rpm; Add in the CA dry mortar powder process, stir 15～30s stirring under the speed of 60～80rpm; After adding the CA dry mortar powder, stir 100～120s stirring under the speed of 110～130rpm, stir 100～120s stirring under the speed of 30～50rpm again, namely obtain multi storied factory building floor layer perfusion CA mortar.
Before perfusion, finished product CA mortar to be tested, specific targets require degree of mobilization to be:
1) limit of the divergence of bedding mortar:
A5 〉=300mm and t300≤18s;
A30 〉=280mm and t280≤22s.
2) mortar strength requires:
The requirement of bending and tensile strength aspect: after 1 day: 〉=1.0N/mm
2
After 7 days: 〉=2.0N/mm
2
After 28 days: 〉=3.0N/mm
2
The requirement of ultimate compression strength aspect: after 1 day: 〉=2.0N/mm
2
After 7 days: 〉=10.0N/mm
2
After 28 days: 〉=15.0N/mm
2
3) air content :≤10%;
Density: 〉=1.80Kg/dm3;
Swell increment: 0～2V-%;
Water cement ratio :≤0.58;
Denseness: 120 ± 20s;
Cement content: 〉=400Kg/m3;
Static elastic constant: 7000～10000N/mm2.
4) endurance test:
Frost resistance: small internal injury degree weathering amount :≤2000g/m2;
Erosion resistance: non-cracking, according to 10000LW;
According to " the pitch technical survey regulation of TP A-SB road engineering, the pressure limits test of single shaft ".
Inventing useful effect is: use of CA mortar is filled between the track plates and concrete bed that thickness is about 50mm more traditionally, effect is the supporting rail guidance tape, the effects such as buffering bullet train load and damping, the quality of its performance is to the ride comfort of platy ballastless track structure, the comfortableness of weather resistance and train operation and security and operation maintenance cost etc. have great effect, characteristics on the thinking continuity CA mortar performance of the present invention, according to concrete factory building situation, adjust prescription to optimize the antivibration index, anti-seismic structure design on traditional factory building compares, the present invention is accelerating construction progress effectively, reduces the construction funds.
Embodiment
Embodiment: a kind of multi storied factory building floor layer perfusion CA mortar, its siccative prescription is as shown in table 1, and CA mortar prescription is as shown in table 2.
| Starting material | Cement | Flyash | Swelling agent | Aluminium powder | Polypropylene fibre | Coarse sand | Fine sand | Ether of cellulose | Wooden sodium sulfonate | Rubber powder |
| Recommend consumption | 550 | 100 | 45 | 0.1 | 15 | 720 | 70 | 0.2 | 0.15 | 0.1 |
Table 1 cement-emulsified asphalt dry mash proportioning (kg/m
3)
| Starting material | Siccative | Emulsified bitumen | Water | Admixture | Defoamer | Air entrapment agent |
| Recommend consumption | 1500 | 250 | 160 | 4.0 | 1.5 | 1.0 |
| Setting range | 1500 | 250 | 150~175 | 3~5 | 1.2~1.8 | 0.8～1.2 |
Table 2 cement emulsified asphalt mortar elementary mix ratio (kg/m
3)
It is normal silicate or the quick hardening sulphoaluminate cement of 42.5R that described cement adopts strength grade, and its technical requirements should meet the regulation of GB175 and JC714.Should use cement fresh, that take good care of, period of storage must not surpass 1 month, surpasses storage period, must not using of making moist.
Described emulsified bitumen should adopt factory's cationic emulsified bitumen processed.Its main performance index should satisfy the requirement of table 3.Adopt barreled or bulk storage and transportation, period of storage must not be above 3 months.
The main performance index requirement of table 3 emulsified bitumen
Described fine aggregate should adopt river sand, mountain sand or Machine-made Sand.Fine aggregate should be maximum particle diameter less than the rock particles of 2.5mm, must not comprise the particle of soft rock, weathered rock.Grain composition should meet the regulation of table 4.Other technical requirements of fine aggregate should meet the regulation of table 5.Fine aggregate pack with moisture barrier bag after should drying, and water ratio is not more than 1%, in storage and the transportation, should take measures to prevent from drenching with rain, foreign material sneak into.
| Size of mesh (mm) | The mass percent of sieving (%) | The mass percent of screenings (%) |
| 2.36 | 100 | 0 |
| 1.18 | 90～100 | 0～10 |
| 0.60 | 60～85 | 15～40 |
| 0.30 | 20～50 | 50～80 |
| 0.15 | 5～30 | 70～95 |
The grain composition requirement of table 4 fine aggregate
The technical requirements of table 5 fine aggregate
Described interpolation water not oil-containing, acid, salt etc. should adopt tap water to the influential objectionable impurities of CA mortar quality.Other requirement should meet the regulation of TB10210.
Described aluminium powder should adopt the flakey aluminium powder.Its key technical indexes should satisfy the requirement of table 6.
The main performance index requirement of table 6 aluminium powder
Described rubber powder material performance index should satisfy: presetting period 〉=4h, final setting time≤12h, tensile bond strength 〉=0.6MPa, inundation tensile bond strength 〉=0.4MPa.
Described water reducer should meet the regulation of GB 8076 or JG/T 223, and water reducer, defoamer supply station (point) should be avoided direct sunlight, and guarantees that storage temperature should be at 5～30 ℃.
Above starting material should require to carry out accurate weighing in strict accordance with the construction proportioning, and weighing maximum allowable offset (by weight) should meet the following requirements: emulsified bitumen ± 1%, siccative ± 1%, admixture ± 0.5%, mixing water ± 1%.All raw material should have ctf. and review report.
Carry out the making that the CA mortar is used in the perfusion of multi storied factory building floor layer according to above starting material, jia bombardier is suddenly: add successively high performance water reducing agent of polyocarboxy acid, silicone antifoam agent and air entrapment agent in water and emulsified bitumen, stir 30～45s stirring under the speed of 30～60rpm; Add in the CA dry mortar powder process, stir 15～30s stirring under the speed of 60～80rpm; After adding the CA dry mortar powder, stir 100～120s stirring under the speed of 110～130rpm, stir 100～120s stirring under the speed of 30～50rpm again, namely obtain multi storied factory building floor layer perfusion CA mortar.
Before perfusion, finished product CA mortar is tested.Specific targets requirement degree of mobilization 2.0～4.0%, reaches 250～300mm in 80～120s, air content about divergence 6s, final divergence 280～320mm, and lose less than 10% half an hour, unit weight 1850～2100kg/m3.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (4)
1. the CA mortar is used in a multi storied factory building floor layer perfusion, it is characterized in that: the mixture that it is comprised of CA dry mortar powder, emulsified bitumen, water and admixture, and each component concentration is calculated as with parts by weight in the mixture:
CA dry mortar powder: 1000～1500 parts;
Emulsified bitumen: 250～500 parts;
Water: 15～170 parts;
Admixture: 2.0～7.0 parts.
2. the CA mortar is used in multi storied factory building floor layer perfusion according to claim 1, it is characterized in that: the mixture that described CA dry mortar powder is comprised of following component raw material, and each component concentration is calculated as with parts by weight in the mixture:
Cement: 500～600 parts;
Flyash: 50～100 parts;
Swelling agent: 40～60 parts;
Aluminium powder: 0.1～0.2 part;
Polypropylene fibre: 15～40 parts;
Fine aggregate: 750～900 parts;
Ether of cellulose: 0.1～0.3 part;
Wooden sodium sulfonate: 0.1～0.2 part;
Rubber powder: 0.1～0.2 part.
3. the CA mortar is used in multi storied factory building floor layer according to claim 1 perfusion, it is characterized in that: the mixture that described admixture is comprised of following component chemical component, in the mixture each component concentration take listed as parts by weight as:
Polycarboxylate water-reducer: 1.5～4.0 parts;
Silicone antifoam agent: 0.5～2.0 part;
Air entrapment agent: 0.5～1.5 part.
4. multi storied factory building floor layer according to claim 3 pours into the manufacture craft with the CA mortar, its step comprises: add successively polycarboxylate water-reducer, silicone antifoam agent and air entrapment agent in water and emulsified bitumen, stir 30～45s stirring under the speed of 30～60rpm; Add in the CA dry mortar powder process, stir 15～30s stirring under the speed of 60～80rpm; After adding the CA dry mortar powder, stir 100～120s stirring under the speed of 110～130rpm, stir 100～120s stirring under the speed of 30～50rpm again, namely obtain multi storied factory building floor layer perfusion CA mortar.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385689.5A CN102923996B (en) | 2012-10-11 | 2012-10-11 | CA (Cement and Asphalt) mortar for pouring floor of multi-storied factory building and manufacture process of CA mortar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210385689.5A CN102923996B (en) | 2012-10-11 | 2012-10-11 | CA (Cement and Asphalt) mortar for pouring floor of multi-storied factory building and manufacture process of CA mortar |
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| CN102923996B CN102923996B (en) | 2014-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004392A (en) * | 2013-02-26 | 2014-08-27 | 纳米及先进材料研发院有限公司 | Durable, germicide-free and antibacterial coating |
| CN112144532A (en) * | 2020-09-16 | 2020-12-29 | 中交四航工程研究院有限公司 | Concrete structure construction method for reducing foundation constraint |
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|---|---|---|---|---|
| CN101058493A (en) * | 2006-04-23 | 2007-10-24 | 柳州欧维姆机械股份有限公司 | CA mortar for plate-type slag-free orbit and preparation method thereof |
| CN101767964A (en) * | 2009-12-25 | 2010-07-07 | 北京工业大学 | Cement asphalt mortar material with low elastic modulus |
| CN101948623A (en) * | 2010-09-14 | 2011-01-19 | 江苏省苏安能节能建材科技有限公司 | Rubber powder modified emulsified asphalt and preparation method thereof and CA mortar prepared by emulsified asphalt |
| CN102336546A (en) * | 2011-06-28 | 2012-02-01 | 中国海洋石油总公司 | High cohesiveness CA mortar |
-
2012
- 2012-10-11 CN CN201210385689.5A patent/CN102923996B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058493A (en) * | 2006-04-23 | 2007-10-24 | 柳州欧维姆机械股份有限公司 | CA mortar for plate-type slag-free orbit and preparation method thereof |
| CN101767964A (en) * | 2009-12-25 | 2010-07-07 | 北京工业大学 | Cement asphalt mortar material with low elastic modulus |
| CN101948623A (en) * | 2010-09-14 | 2011-01-19 | 江苏省苏安能节能建材科技有限公司 | Rubber powder modified emulsified asphalt and preparation method thereof and CA mortar prepared by emulsified asphalt |
| CN102336546A (en) * | 2011-06-28 | 2012-02-01 | 中国海洋石油总公司 | High cohesiveness CA mortar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104004392A (en) * | 2013-02-26 | 2014-08-27 | 纳米及先进材料研发院有限公司 | Durable, germicide-free and antibacterial coating |
| CN112144532A (en) * | 2020-09-16 | 2020-12-29 | 中交四航工程研究院有限公司 | Concrete structure construction method for reducing foundation constraint |
| CN112144532B (en) * | 2020-09-16 | 2022-04-15 | 中交四航工程研究院有限公司 | Concrete structure construction method for reducing foundation constraint |
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