Concrete nrog txhim kho flowability yog hu ua flow concrete. Cov qhob vaj huam sib luag yog tov nrog superplasticizers. Qhov no txhim kho qee yam khoom kom cov pob zeb siv tau rau cov ntawv thov tshwj xeeb.
Composition
Dej pob zeb yog dab tsi? Cov lus nug no feem ntau tshwm sim thaum nrhiav qhov zoo ntawm cov pob zeb rau koj tus kheej qhov project. Hom no yog classic pob zeb uas yog tov nrog ib tug tshwj xeeb plasticizer. Lub plasticizer ua rau lwm yam viscous qhob ua kua ntau dua thiab yooj yim dua rau nchuav. Muaj ntau hom plasticizers uas haum rau kev sib xyaw. Cov no tsis yog ib tus neeg, tab sis cov khoom tiav lawm uas tau sib xyaw ua ke nrog cov pob zeb classic, uas muaj cov khoom xyaw hauv qab no:
- Cement
- Aggregate
- dej
Fluent
Lub superplasticizer feem ntau yog dosed raws li cov chaw tsim khoom cov lus qhia. Qhov kev xav ntau tshaj plaws yog qhov nyiaj ntawm 0.2 mus rau peb feem pua. Ib yam dab tsi ntxiv yuav ua rau cov pob zeb ua kua ua kua heev thiab nyuaj rau kev ua haujlwm. Kev siv cov superplasticizers yog tsim rau tag nrho cov chav kawm sib xws ntawm F1 txog F6, uas ua rau cov pob zeb ntws tau zoo heev. Cov chav kawm F4 txog F6, uas yog nyob rau hauv cov chav kawm flowable, feem ntau yog npaj nrog superplasticizers. Muaj cov khoom siv sib txawv uas siv los tsim cov superplasticizers. Qhov sib txawv tseem ceeb ntawm lawv yog lawv cov txiaj ntsig. Cov tseem ceeb tshaj plaws suav nrog:
- Naphthalene sulfonate: nquag siv raw khoom
- Lignin sulfonate: feem ntau siv nrog lwm cov ntaub ntawv raw
- Polycarboxylate ether: rau kev ua tau zoo plasticizers
Note:
Ntxiv superplasticizer rau qhov xav tau sib xws yog hu ua "kho".
Feature
Vim lawv cov muaj pes tsawg leeg, cov kua ua kua muaj cov khoom tshwj xeeb uas tsis muaj lwm hom tuaj yeem muab tau. Vim li no, lawv yog cov pob zeb tshwj xeeb uas nws cov khoom tseem ceeb yog flowability. Hauv kev sib piv, cov pob zeb ua kom muaj dej ntau dua thiab softer, ua kom sib tov yooj yim dua. Nyob rau tib lub sij hawm, hom no yog tus kheej-compacting pob zeb vim nws kis tau sai dua tsis hais qhov ntau npaum li cas siv. Lwm yam khoom ntawm ntws pob zeb yog nyob ntawm qhov pib pob zeb. Qhov no txhais tau hais tias cov ntsiab lus hauv qab no yog txiav txim siab los ntawm cov pob zeb uas cov superplasticizer ntxiv:
- Tus cwj pwm txo qis
- Crawling cwj pwm
- lub zog kawg
Applications
Vim nws muaj pes tsawg leeg, cov pob zeb ntws zoo dua rau qee qhov chaw ntawm daim ntawv thov dua li lwm hom pob zeb. Nws yog feem ntau siv los sau cov pob zeb formwork. Yog vim li cas: Vim nws qhov sib xws, tag nrho cov pob zeb tuaj yeem sau tau yooj yim yam tsis muaj kab noj hniav tsim nyob rau hauv ib qho chaw, uas tuaj yeem cuam tshuam tsis zoo rau cov statics ntawm phab ntsa tiav. Tsis tas li ntawd, lub pob zeb yog ib qho yooj yim rau twj tso kua mis, uas ua rau kom lub filling. Ntxiv nrog rau kev rov qab ua dua, muaj lwm cov ntawv thov uas ntws cov pob zeb tsim nyog:
- Qhia ua vaj tse
- seamless floor coverings
- Kev kho pem teb
- Pov cov kauj ruam los yog countertops
Piv rau cov hom kev ua vaj tse, cov pob zeb ntws tuaj yeem siv tau zoo heev li cov pob zeb ua kom zoo. Lawv tuaj yeem siv tau, piv txwv li, txhawm rau txhawm rau nce thaj tsam ib kauj ruam tsis siv cov khoom siv ntau dhau. Tsuas muaj ob peb lub ntsiab lus los xav txog:
- zoo tagnrho rau thaj chaw me me
- yuav siv tau me me
- kho txhua txheej
Tip:
Koj tuaj yeem siv cov pob zeb ntws los rau kev kos duab. Piv txwv li, cov pob zeb tuaj yeem muab nchuav rau hauv pwm thiab, tom qab hardening, qhov sib tov ua lub hauv paus ntawm cov duab puab.
Advantages
Floating concretes muaj ntau qhov zoo hauv kev sib piv ncaj qha, uas feem ntau siv hauv cov ntawv thov hais. Ib qho ntawm qhov zoo tshaj plaws yog tias nws yooj yim rau siv nrog lossis tsis muaj lub twj tso kua mis, vim qhov no txo cov nqi ntawm kev ua haujlwm. Ib lub ntsiab lus uas feem ntau saib tsis pom yog qhov kev siv dej qis dua thaum tswj xyuas tib lub zog. Lub superplasticizer txhais tau hais tias yuav tsum muaj dej tsawg dua rau kev sib xyaw, uas tiv thaiv cov teeb meem nrog kev sib xyaw thiab pob zeb uas nyias dhau. Cov dej ntau dhau yuav tsum tsis txhob ntxiv, txwv tsis pub cov pob zeb yuav poob ruaj khov. Txij li thaum flowable pob zeb yog nws tus kheej-compacting, tsis tas yuav muaj lwm kauj ruam. Nyob rau tib lub sijhawm, yuav tsum muaj cov pob zeb tsawg dua vim tias qhov kev sib kis tau zoo txhais tau hais tias cov pob zeb me me ua rau ntau qhov chaw. Koj tuaj yeem ua kom zoo dua ntawm qhov no thaum nchuav qhov chaw lossis sau cov pob zeb ua haujlwm.
Note:
Qhov tsuas yog qhov tsis zoo ntawm cov pob zeb ntws yog qhov kev npaj ntau dua ua ntej nchuav qhov loj. Piv txwv li, formwork blocks yuav tsum haum raws nraim kom cov pob zeb tsis tawv tsis raug lossis xau.
Cov nqi
Thaum siv cov kua ua kua, cov nqi yuav tsum tau muab coj los rau hauv tus account. Ntxiv rau cov nqi tiag tiag rau cov pob zeb, kuj tseem muaj cov yas yas, uas nce tus nqi raws li. Txij li tsuas yog ib qho me me ntawm superplasticizer yuav tsum tau ib kilogram ntawm pob zeb, cov khoom muaj nyob rau hauv lub raj mis los yog canisters uas yooj yim rau koob. Cov nqi hauv qab no yog cov nqi sib txawv rau cov superplasticizer:
- 1 l lub raj mis: 7 txog 15 euros
- 5 l canister: 10 to 30 euros
Yog tias koj xav xam tus nqi rau cov pob zeb xws li superplasticizer, koj yuav tsum ua raws li cov lus pom zoo tau hais tseg. Pob zeb muaj nyob rau hauv ntau qib, uas muaj feem cuam tshuam rau tus nqi. Piv txwv li, yog tias koj xav sib tov ib lub cubic meter ntawm pob zeb nrog chav kawm C30/37, koj yuav tsum xam cov nyiaj superplasticizer xav tau:
- 1 m³ ntawm pob zeb sib raug rau 1,000 l
- 0, 2 mus rau 3% superplasticizer yog 2 txog 30 l
Yog li koj xav tau ob mus rau 30 litres ntawm superplasticizer, uas sib raug rau tus nqi ntawm ib ncig ntawm 12 mus rau 200 euros, nyob ntawm seb yuav xav tau ntau npaum li cas ntawm cov tshuaj ntxiv. Qhov no txhais tau tias tus nqi kawg rau ib lub cubic meter ntawm C30/37 qhob yog raws li nram no:
- 1 m³ pob zeb: 90 euros
- 0, 2 mus rau 3% superplasticizer: 12 txog 200 euros
- Floating pob zeb: 102 txog 290 euros
