pob zeb sib tov, raws li koj paub, yog cov khoom siv txawb thiab yas. Nws yog qhov yooj yim heev rau nteg cov kev daws teeb meem hauv cov formwork. Txawm li cas los xij, yav tas los siv cov pob zeb sib tov yuav tsum tau ua kom compaction. Ntxiv mus, qhov ua tib zoo ua raws li cov txheej txheem no tau ua tiav, qhov zoo dua cov pob zeb ua haujlwm tom qab tau muab tawm. Niaj hnub no, ib hom tshiab ntawm cov cement sib tov tau tshwm sim ntawm kev muag khoom. Lawv hu ua self-compacting thiab tsis tas yuav tamping thaum nteg.
Key Benefits
Thaum nchuav cov khoom sib xyaw ntawm hom no, txhua qhov ntawm cov formwork tau sau sib npaug sai thiab tsis muaj voids. Uas yog, nws tus kheej-compacting qhob yuav siv tau tsis tau tsuas yog nyob rau hauv kev tsim kho ntawm, piv txwv li, nyob rau hauv lub tsev, tab sis kuj nyob rau hauv complex architectural lug. Tsis tas li ntawd, cov kev sib tov zoo li no tsuas yog qhov zoo tshaj plaws rau pouring densely reinforced lug. Nyob ze ntawm cov ncej, tsis muaj huab cua tsim nyob rau hauv lawv cov thickness.npuas, thiab txheej nws tus kheej yog homogeneous li sai tau.
Lwm qhov txiaj ntsig tsis txaus ntseeg ntawm nws tus kheej-compacting pob zeb yog cov qauv nchuav los ntawm nws muaj qhov chaw tiaj tus. Nws tsis tas yuav tsum ua ib qho kev nqis tes los kho lawv ntawm theem kawg. Piv txwv li, thaum nchuav cov plag tsev los ntawm cov pob zeb zoo li no, tsis tas yuav siv cov khoom siv theem ua ntej txhim kho hauv pem teb tiav.
Cov neeg tsim khoom siv cov pob zeb zoo li no hauv lawv txoj haujlwm, tau kawg, xav txog nws qhov txiaj ntsig zoo uas tsis tas yuav yuav cov khoom siv vibration kim. Xws li pob zeb yog compacted tsuas yog nyob rau hauv nws tus kheej qhov hnyav. Yog li ntawd, sau ntau hom qauv nrog nws cov kev siv hloov mus rau hauv cov txheej txheem yooj yim heev.
cov cuab yeej vibrating paub tias nrov nrov. Txij li thaum nws tsis tsim nyog siv cov khoom sib sau ua ke thaum tso nws tus kheej-compacting pob zeb, nws tuaj yeem ua haujlwm nrog cov khoom siv no, suav nrog thaum hmo ntuj.
Kev sib xyaw ntawm tus kheej yog, ntawm chav kawm, kim dua li cov cement zoo tib yam. Txawm li cas los xij, vim tsis muaj qhov xav tau siv cov cuab yeej vibration, cov qauv tsim los ntawm lawv feem ntau txawm tias pheej yig dua.
Qhov kev ua tau zoo ntawm ob hom kev daws teeb meem no zoo ib yam. Kev sib xyaw ntawm qhov hnyav thiab nws tus kheej-compacting pob zeb tso cai rau kev tsim kho vaj huam sib luag muaj zog thiab ruaj khov. Qee zaum cov qauv tsim siv mortars ntawm hom tom kawg yog qhov txawv ntawm qhov zoo tshaj plawsCov yam ntxwv ua haujlwm.
Kev sib xyaw ntawm tus kheej-compacting pob zeb
Nyob rau hauv tsos, cov khoom siv no xyaum tsis txawv ntawm cov cement zoo tib yam. Tib yam siv rau nws cov muaj pes tsawg leeg. Nyob rau hauv kev npaj ntawm xws li sib tov, nyob rau hauv lub hauv paus ntsiab lus, tib cov ntaub ntawv yog siv raws li nyob rau hauv kev sib tov ntawm pa hnyav tsev cement mortars. Qhov sib txawv ntawm ob hom ntaub ntawv no tsuas yog nyob rau hauv qhov tseeb hais tias rau nws tus kheej-compacting, thawj cov khoom yog ua tib zoo xaiv raws li granulometry. Piv nrog rau cov kev daws teeb meem, cov formulations muaj ntau yam qauv zoo sib xws.
Tsis tas li, hauv kev tsim cov khoom sib xyaw ua ke, cov yas sib txawv me ntsis tuaj yeem siv. Lub peev xwm los sau cov formwork nrog cov txheej txheem tiag tiag hauv txhua qhov ntawm cov kev daws teeb meem no yog ib feem cuam tshuam nrog qhov no.
Tam sim no, muaj ntau ntau yam ntawm cov khoom no muag. Tab sis feem ntau, qhov muaj pes tsawg leeg ntawm tus kheej-compacting pob zeb muaj cov hauv qab no:
- portland cement;
- sand;
- pob zeb tawg ntawm qhov zoo;
- tshuaj hloov pauv;
- plasticizers;
- dej.
Tsis tas li, ntau yam tshuaj tuaj yeem sib xyaw rau hauv cov kev daws teeb meem uas ua rau lawv cov khoom tiv thaiv corrosion. Raws li ib qho ntxiv rau nws tus kheej-compacting pob zeb, cov neeg ua haujlwm uas txo nws lub peev xwm tawg kuj tau siv ntau zaus.
yam ntxwv dab tsisib
Thaum xaiv cov cement sib tov ntawm txhua yam, cov neeg tsim khoom hauv thawj qhov chaw, tau kawg, xyuam xim rau qhov taw qhia xws li compressive zog. Pob zeb, raws li koj paub, tsis muaj zog heev rau kev tawg, thiab txhua cov qauv ua los ntawm nws yog tsim nyob rau hauv xws li ib txoj kev uas cov khoom no raug rau hom load tsawg npaum li sai tau.
Compressive zog ntawm tus kheej-compacting compounds yog zoo heev. Nyob ntawm seb muaj pes tsawg leeg thiab cov khoom siv ntxiv, qhov ntsuas no rau cov pob zeb no tuaj yeem yog 30-90 MPa. Cov khoom siv sealing tus kheej kuj muaj cov yam ntxwv hauv qab no:
- ua haujlwm Performance index - 70%;
- modulus ntawm elasticity - 30-36 GPa;
- mobility - P5;
- frost resistance - F400;
- cua npuas cov ntsiab lus - tsis ntau tshaj 6%;
- water resistant - los ntawm W62.
Yog tias peb tham txog cov yam ntxwv ntawm kev ua haujlwm, ces nws tus kheej-compacting mixs, piv rau cov pa, kuj muaj qhov zoo uas lawv tsis delaminate txawm nyob rau hauv kev thauj mus los ntev.
Yuav ua li cas yog ntau yam
Hauv Cov Ntawv Ntxiv A GOST 25192-2012, nyob rau hauv nqe lus 3.7., Cov pob zeb ua rau nws tus kheej tau muab lub npe tseeb thiab txhais. Lawv hu nws, raws li cov kev cai, cov khoom siv "ua los ntawm cov pob zeb sib xyaw uas muaj peev xwm ua kom compacting hauv nws qhov hnyav."
Tam sim no, kev lag luam tsim tawm ob homzoo sib xws:
- fine;
- stabilizing.
Cov khoom sib xyaw ntawm thawj hom sib txawv feem ntau yog tias lawv muaj cov khoom tawg yooj yim ntau dua li cov kev daws teeb meem. Xws li cov fillers feem ntau nce qhov tsis kam ntawm qhov muaj pes tsawg leeg rau delamination. Raws li cov khoom siv ntxiv rau cov pob zeb ua kom zoo nws tus kheej tuaj yeem siv tau, piv txwv li:
- fly tshauv;
Qee zaum cov hmoov limestone zoo tib yam ntxiv rau cov khoom sib xyaw. Ib hom zoo ntawm cov nplua aggregate rau nws tus kheej-compacting qhob kuj yog granulated blast-kuav slag.
Cov khoom siv thib ob yog tsim los ntawm cov khoom tshwj xeeb stabilizers. Cov additives no ua tiav qhov zoo tshaj plaws viscosity ntawm qhov sib tov thiab muab qhov zoo tshaj plaws sib npaug ntawm lawv cov fluidity thiab tsis kam rau delamination.
Kev faib tawm
Ua ntej yuav ib qho kev sib khi ntawm tus kheej, tau kawg, koj yuav tsum xyuam xim rau nws lub npe. Los ntawm cov chav kawm, cov kev sib tov tam sim no tau muab faib raws li hauv qab no:
- pass obstacles yog tias ua tau - PA1–RA2;
- rau tev tawm - SR1–SR2.
Tau kawg, thaum yuav, cov neeg tsim khoom, thiab lwm yam, yuav tsum tau them sai sai rau qhov ntsuas qhov ntsuas ntawm tus kheej-compacting pob zeb. Rau qhov zoo ntawm cov khoom tiav, piv txwv li, qhov no yog qhov tseem ceeb heev. Txheeb xyuas qhov sib xyaw ua tiav ntawm hom no rau qhov degreeviscosity tuaj yeem los ntawm ob lub thev naus laus zis. Nyob rau hauv no hais txog, cov chav kawm ntawm tus kheej-compacting mixs yog txawv:
- rau 500 mm cone - VS1–VS2;
- thaum kuaj hauv V-shaped funnel - VF1–VF2.
Tseem muaj cov chav kawm ua haujlwm rau tus kheej ua vaj tse - SF1–SF3.
Yuav ua li cas thiab nyob qhov twg
Qee zaum, cov khoom siv xws li cov pa cement, tuaj yeem xa mus rau kev lag luam hauv hnab hauv daim ntawv ntawm kev sib xyaw qhuav. Txhawm rau npaj cov kev daws teeb meem, cov khoom sib xyaw no tsuas yog diluted nrog dej hauv cov proportions teev los ntawm cov chaw tsim khoom. Tab sis nyob rau hauv daim ntawv no, mixs ntawm hom no tseem tsis tshua muaj neeg. Feem ntau tsim cov ntaub ntawv qhuav ntawm ntau yam no yog npaj rau kev nchuav tsuas yog cov txheej txheem nyias nyias.
Yeej, niaj hnub no muaj cov khoom zoo sib xws yog muag hauv daim ntawv npaj ua tiav. Kev sib xyaw ntawm cov khoom siv no rau cov txheej txheem tseem ceeb ntawm cov khoom thauj khoom yuav tsum muaj cov kws tshaj lij tsim nyog ua cov txheej txheem no. Cov kev daws teeb meem npaj txhij, tau kawg, yog kim dua li cov khoom qhuav. Tom qab tag nrho, lawv cov tsheb thauj mus los yog ib qho lag luam kim heev. Tab sis cov khoom siv no yooj yim tshaj plaws los siv. Cov qauv los ntawm kev daws yog nchuav rau hauv ib kauj ruam los ntawm kev muab qhov kawg ntawm lub hose. Rau cov neeg tsim khoom ntiag tug, piv txwv li, kev yuav khoom ntawm cov khoom siv no tuaj yeem yog qhov kev daws teeb meem zoo tshaj plaws rau kev tsim kho cov ceilings thiab slab foundations.
Qee cov neeg tsim khoom kuj txaus siab rau cov uas tab tom tsim cov kev cai rau kev tso cov pob zeb ua rau nws tus kheej. Raws li txoj cai lij choj hauv tebchaws Russia, cov chaw tsim khoom yuav tsum npaj cov ntaub ntawv thev naus laus zis, nrog rau kev pom zoo. Nyob rau tib lub sijhawm, thaum tsim cov kev cai, cov kws tshaj lij ntawm lub tuam txhab zoo li no yuav tsum tau ua raws li cov cai ntawm GOST, suav nrog cov ntawv cog lus muab khoom.
Yuav siv tau qhov twg
Tau kawg, qee zaum nws tus kheej sealing sib tov tuaj yeem siv rau kev nchuav ntau yam qauv thiab hauv kev tsim vaj tsev ntiag tug. Tab sis niaj hnub no, xws li pob zeb yog siv nyob rau hauv feem ntau ntawm cov koom haum tsim kho.
Cov khoom no tseem yog tshiab rau Russia. Tam sim no, txawm tias kev faib tawm hauv tsev ntawm cov cuab yeej zoo li no tseem tsis tau tsim. Cov neeg tsim khoom hauv Lavxias Federation raug coj los ntawm cov qauv European thaum siv cov pob zeb ua tus kheej. Txawm li cas los xij, qee cov ntaub ntawv tswj hwm kev siv cov khoom siv no, thiab GOSTs hais txog nws, twb tau tsim nyob rau hauv peb lub teb chaws niaj hnub no.
Qhov no siv, piv txwv li, rau thaj tsam ntawm tus kheej-compacting pob zeb. Raws li SNiP cov qauv, hauv kev tsim kho kev lag luam xws li cov khoom sib xyaw tau tso cai thiab pom zoo kom siv:
- hauv kev tsim cov khoom ua vaj tsev precast;
- thaum lub sijhawm tsim kho cov qauv hydraulic;
- thaum nchuav cov qauv nrog cov kev xav tau tshwj xeeb lub zog;
- rau nchuav cov khoom siv vaj tsev;
- hauv kev tsim cov Lego cib;
- rau kev tsim cov qauv nrog me me thickness (laj kab, phab ntsa, thiab lwm yam).
Tsis tas li ntawd, cov khoom sib xyaw no feem ntau siv rau cov screed ruaj khov nyob rau hauv cov xwm txheej uas lawv yuav tom qab raug rau cov khoom hnyav (hauv kev cob qhia nrog cov tshuab hnyav thiab khoom siv, hauv cov khoom tshwj xeeb garages, thiab lwm yam).
Feem ntau nws tus kheej-compacting qhob kuj tseem siv rau hauv kev kho dua tshiab. Nws yog siv rau qhov no, piv txwv li, thaum txhaj tshuaj.
Kneading requirements
Thaum npaj cov tshuaj khib nyiab los ntawm cov khoom sib xyaw ua ke qhuav, thiab lwm yam, nws yog qhov tsim nyog:
- Yam raug xa cov ntaub ntawv mus rau hauv lub tov khoom;
- Ua tib zoo tswj cov dej noo ntawm txhua hom kev sib sau.
Kev thauj cov khoom sib tov mus rau qhov chaw tsim kho tsuas yog tso cai los ntawm cov tsheb uas tau lees paub.
Yuav ua li cas kom raug
Txhawm rau kom tau txais kev tsim kho kom ruaj khov thiab ruaj khov, koj yuav tsum ua raws li txhua yam kev siv thev naus laus zis thaum nchuav cov khoom sib tov. Thaum ua haujlwm li no, nws yog thawj zaug uas yuav tsum tau ua kom ntseeg tau tias cov khoom siv txuas ntxiv mus rau qhov chaw tsim kho.
Qhov sib tov nws tus kheej yuav tsum tau pub rau hauv daim ntawv kom txog thaum nws puv tag. Nws raug tso cai rau kev so hauv kev tsim khoom thaum nchuav cov qauv siv cov khoom siv zoo li no. Txawm li cas los xij, tag nrho lub sijhawm poob yuav tsum tsis pub tshaj ib nrab teev. Txwv tsis pub, cov sib tov yuav poob nws tus kheej-compacting zog.
Ua ntejThaum pib ntawm pouring nws tus kheej, koj yuav tsum xyuas kom meej tias tsis muaj dej nag hauv formwork, piv txwv li. Yog hais tias nws yog tam sim no, tom qab poured self-compacting pob zeb yuav twv yuav raug hu delaminate.
Ib yam ntxwv ntawm hom mortar no yog, ntawm lwm yam, qhov tseeb tias ua ntej tso rau hauv lub formwork, nws ntws yuav tsum dhau ib qho kev ncua deb. Qhov no xyuas kom meej tias huab cua npuas raug tshem tawm ntawm qhov sib tov. Zoo li cov cement mortar zoo tib yam, nws tus kheej-compacting yog pumped rau hauv formwork los ntawm loj-section hoses. Yog li ntawd tsis muaj npuas nyob rau hauv xws li ib tug sib tov, raws li cov qauv, txaus lub tes tsho ntev yuav tsum tau siv rau nws cov khoom. Txawm li cas los xij, qhov ntsuas no raws li SNiP tseem yuav tsum tsis pub tshaj 200 m.
Special moment rules
Concreting phab ntsa nrog nws tus kheej-compacting pob zeb (los yog, piv txwv li, ceilings) yog ib txoj kev yooj yim. Txawm li cas los xij, raws li twb tau hais lawm, xws li cov khoom siv feem ntau yog siv rau kev tsim kho cov qauv ntawm cov qauv vaj tsev complex. Yog li ntawd, qee zaum lawv yuav tsum tau nchuav rau hauv formwork nrog kev tshem tawm huab cua nyuaj. Ib qho piv txwv ntawm cov khoom siv no yog cov pwm rau cov kab siab.
Thaum pouring self-compacting mixs rau hauv xws formwork, tej yam kev cai yuav tsum tau soj ntsuam. Piv txwv li, nyob rau hauv cov ntaub ntawv no, qhov sib tov yog tsis tso cai rau muab pov tseg. Thaum nchuav txhua kab, lub tes tsho feem ntau yog qis dua hauv daim ntawv thiab tsa raws li tom kawg tau sau.
Dab tsi yog qhov tsis zoo
Cov txiaj ntsig ntawm kev siv cov pob zeb ua kom nws tus kheej sib xyaw ua ke yog limuaj ntau. Muaj kev xyaum tsis muaj qhov tsis zoo rau cov ntawv sau zoo li no. Cov neeg tsim khoom xav tias nws tus nqi siab yog qhov tsis zoo ntawm cov khoom siv no xwb.
Tsis zoo li ib txwm, cov khoom sib xyaw no yog cov yam ntxwv ntawm cov qib siab ntawm ductility. Qee zaum, qhov no tuaj yeem ua rau lawv nyuaj rau nruab. Cov neeg tsim khoom no, tau kawg, kuj hais txog qhov tsis txaus ntawm cov khoom ntawm ntau yam no.
Mix Reviews
Ua haujlwm nrog cov khoom siv, raws li cov neeg tsim khoom, yog qhov yooj yim heev rau feem ntau. Cov khoom sib khi ntawm tus kheej tau txais kev tshuaj xyuas zoo los ntawm cov neeg tsim khoom thiab rau lawv cov khoom zoo, nrog rau qhov zoo nkauj ntawm cov qauv nchuav los ntawm lawv.
Kev xav ntawm cov neeg tsim khoom txog cov pob zeb zoo li no tsis yog qhov phem. Txawm li cas los xij, ntau tus neeg siv khoom nco ntsoov qhov tseeb tias nyob rau hauv Russia tam sim no, hmoov tsis, cov khoom sib xyaw ntawm hom no feem ntau muag tsis tau raws li qhov xav tau ntawm kev tsim kho niaj hnub no.
Qhov no yog vim qhov tseeb tias yuav luag txhua lub chaw tsim khoom hauv Lavxias niaj hnub no tsim cov kev daws teeb meem raws li nws tus kheej daim ntawv qhia. Qee zaum, hauv kev tsim cov khoom siv, cov tuam txhab tsis ua raws li GOST. Self-compacting pob zeb uas ua rau hauv kev ua txhaum ntawm kev siv tshuab yuav tsis txawv ntawm qhov yuav tsum tau muaj degree ntawm uniformity, plasticity thiab lub zog.
Rau txhua yam, hauv peb lub tebchaws niaj hnub no, raws li qee tus neeg siv khoom, tsis muaj cov khoom tsim nyog rau kev tsim cov khoom sib xyaw. Qhov no siv, piv txwv li, rau rubble. Feem ntau, thaumNyob rau hauv kev tsim ntawm tus kheej-compacting mixs nyob rau hauv Russia niaj hnub no, cov khoom ntawm no hom yog tsis zoo heev suited (los ntawm qhov tsis muaj impurities) rau lawv.
