Fine-grained pob zeb: specifications, GOST

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Fine-grained pob zeb yog cov khoom siv hauv tsev rau lub hom phiaj tshwj xeeb. Nws yog siv nyob rau hauv rooj plaub uas siv cov pa hnyav hnyav ua tsis tau. Qhov no yuav tsum muaj xws li kev sib khi ntawm cov pob qij txha, lub ncuav ntawm cov txheej txheem hnyav hnyav thiab kev npaj ntawm cov dej tsis zoo. Tab sis ua ntej npaj qhov sib tov, koj yuav tsum paub koj tus kheej nrog nws cov yam ntxwv, nrog rau cov yam ntxwv.

Specifications

Cov pob zeb tau piav saum toj no yog cov khoom siv raws li cov cement. Cov khoom xyaw tseem ceeb yog xuab zeb thiab dej ntawm cov feem sib txawv. Hom pob zeb no tseem hu ua xuab zeb, thiab nws qhov sib txawv tseem ceeb yog qhov feem ntawm cov khoom siv hauv cov khoom sib xyaw yuav tsum tsis txhob ntau tshaj 2.5 hli.

Qhov hnyav ntawm qhov hnyav thiab hnyav ntxiv tuaj yeem sib txawv ntawm 2200 txog 2500 kg / m³. Curing kub tuaj yeem sib npaug li qhov txwv ntawm +5 txog +30 ° C. Muaj peev xwmsiab siab yog khaws cia ntawm 25 MPa. Lub zog compressive yog 18.5 MPa, raws li kev tsim qauv, nws yog sib npaug rau 14.5 MPa.

Frost tsis kam yuav txawv nyob ntawm cov khoom xyaw siv thiab txwv rau 50 txog 1000 khov thiab thaw mus. Fine-grained pob zeb muaj qee theem ntawm dej tsis kam. Qhov kev ntsuas no tau qhia los ntawm tsab ntawv "W" thiab tuaj yeem ua raws li qhov txwv ntawm 2 txog 20.

Ntxiv nta

hnyav thiab nplua-grained concretes muaj peev xwm ua kom zoo ib yam rau ib lub sijhawm, nws cuam tshuam los ntawm qhov piv ntawm cov cement thiab xuab zeb, nrog rau cov dej. Yog hais tias peb tham txog fatty mixs, ces lawv yuav tsum tau npaj nyob rau hauv ib tug ratio ntawm 1 mus rau 1 los yog 1 mus rau 1.5. Nyob rau hauv xws li kev daws, cov nplej yog nyob ntawm tej deb ntawm ib leeg.

Yog tias qhov ntim ntawm cov ntaub ntawv txo qis, qhov no yuav ua rau txo qis ntawm kev siv dej thiab kev txav mus los. Fine-grained pob zeb rau kev tsim qauv tuaj yeem npaj tau raws li hauv qab no: 1: 3, 5 thiab 1: 4. Lub pob zeb yuav ua kom khov yog tias cov xuab zeb cov ntsiab lus nce ntxiv. Plasticity yuav txhim kho nrog kev sib ntxiv ntawm dej thiab plasticizers. Yog tias koj txo cov cement, nws yuav ua rau delamination.

rau kev siv

Siv qhov kev pom zoo thaum sib xyaw ua vaj tse, koj yuav ua kom muaj qhov ntom ntom nrog kev ua haujlwm txav mus los. Yog tias qhov haujlwm tau ua tiav lawm, ces zoo-grainedPob zeb ua yuav muaj kev sib luag siab ceev, kev sib dhos zoo, noo noo tsis kam thiab axial khoov yog lub zog. Frost tsis kam ntawm xws li cov khoom yog nce, thiab nrog rau txoj cai muaj pes tsawg leeg, kev mus los yog ib txwm nyob rau hauv thiaj li yuav faib cov sib tov kom sai li sai tau. Ntawm cov yam ntxwv zoo ntawm cov khoom siv yog nws cov nqi qis, uas cuam tshuam los ntawm qhov tsis muaj cov khoom loj. Qhov no ua rau kev thauj mus los yooj yim dua. Ntawm lwm yam, pob zeb yog ntau yam.

siv thaj chaw

Qhob hnyav thiab nplua-grained tuaj yeem siv rau hauv cov cheeb tsam uas muaj qhov tsis txaus ntawm cov ntxhib sib xyaw. Thaum sib tov, siv ib qho ntxiv ntim ntawm cov cement, uas tej zaum yuav nrog cov teeb meem hauv kev xaiv qhov piv ntawm cov khoom xyaw. Tab sis qhov tsis zoo yog offset los ntawm kev txuag ntawm kev thauj mus los ntawm cov pob zeb crushed thiab gravel.

Cov yam ntxwv ntawm monolith tuaj yeem txhim kho los ntawm kev siv cov yas yas, txo tus nqi kawg. Cov khoom siv polymer ua rau cov khoom siv tiv taus ntau dua rau qhov chaw nruj, Frost thiab dej. Heavy thiab nplua-grained concretes, specifications uas tau hais los saum no, yog siv nyob rau hauv monolithic thiab complex reinforced lug, piv txwv li:

• thin-walled partitions;
• vaults thiab domes;
• thaum ua chaw ua si sculptures;
• thaum tsim cov channel, tso tsheb hlau luam thiab cov kav dej;
• hauv kev tsim cov pob zeb paving,
• paving slabs thiab curbs;
• hauv kev tsim cov hinged siding rau facades thiab plinth;
• thaum lub sijhawm tsim kho cov qauv hydraulic;
• thaum tsim arched ceilings.

Hauv kev tsim kho, qhov sib xyaw no tuaj yeem siv rau qib theem. Yog tias koj siv cov pob zeb qib B25, tom qab ntawd nrog nws cov kev pab koj tuaj yeem hlau cov pob zeb hauv pem teb, kaw cov seams thiab tawg ntawm phab ntsa.

Qhov zoo thiab qhov tsis zoo

Zoo-grained pob zeb, muaj pes tsawg leeg uas tau hais hauv tsab xov xwm, muaj ntau yam zoo, ntawm lawv yuav tsum tau hais txog:

• siab zog yam;
• muaj peev xwm tsim cov ntaub ntawv nrog cov khoom tshwj xeeb;
• siab vibration resistance;
• homogeneous qauv;
• muaj peev xwm hloov pauv kev sib xyaw.

Txawm li cas los xij, cov khoom muaj nws qhov tsis zoo, lawv tau siv ntau dua ntawm cov cement, siab hardness thiab shrinkage thaum lub sij hawm casting. Thaum nws los txog rau hardness, nws tuaj yeem ua rau kev ua haujlwm nyuaj.

Kev sib xyaw thiab lub xeev cov qauv

Hauv kev tsim cov khoom piav qhia, GOST yog siv, hnyav thiab nplua-grained pob zeb, cov txheej txheem ntawm cov lus hais hauv kab lus, yog tsim los ntawm cov khoom siv hauv cov cement thiab dej. Tab sis cov fillers tuaj yeem yog dej xuab zeb thiab gravel. Hauv thawj kis, qhov feem yuav tsum tsis pub tshaj 2.5 hli. Crushed pob zeb tuaj yeem ntxiv yog tias nws qhov loj me tsis tshaj 10 hli. Tsis tas li ntawd, nyob rau hauv tas li ntawd, cov muaj pes tsawg leeg muaj peev xwmqhia txog qhov xav tau ntawm cov yas yas. Qhov no tso cai rau koj kom ua tiav homogeneous qauv.

Los ntawm kev ntxiv cov cement ntau dua li qhov xav tau, koj khiav txoj kev pheej hmoo ntawm kev tau txais mortar uas yuav tsis yooj yim hauv masonry. Yog tias cov khoom xyaw no ntxiv rau hauv qhov ntim tsis txaus, tom qab ua kom tiav cov khoom yuav muaj zog tsawg. Heavy thiab nplua-grained pob zeb (GOST 7473-2010) tuaj yeem tsim los ntawm kev ua haujlwm. Cov tshuab no siv rau kev tsim cov curbs, arches, thiab paving slabs. Nyob rau hauv cov ntaub ntawv ntawm nyias-walled lug, dense reinforcement technology yog siv. Cov khoom no feem ntau tsim lub hauv paus ntawm txoj kev, vim nws muaj kev tiv thaiv dej khov thiab dej tsis kam.

Txoj kev npaj ntawm kev sib sau

Cov khoom ntawm cov pob zeb zoo yuav tsum raug xaiv raws li cov qauv. Cov tshuaj yuav tsum muaj cov khoom uas muaj cov yam ntxwv sib txawv. Cov kev cai tswj kev siv cov xuab zeb sib cais ua qhov ntau thiab tsawg. Ua ntej, cov xuab zeb yog sifted los ntawm ib lub mesh uas nws sab yog 2.5 hli. Qhov no tso cai rau koj kom tau txais thawj feem. Tom qab ntawd siv ib daim phiaj nrog mesh loj ntawm 1.2 hli.

Tom qab cov hlwb txo qis, lawv yuav tsum haum qhov loj ntawm 0.135mm. Txhua yam dhau los ntawm lub mesh lub sijhawm kawg yuav raug siv los ua qhov chaw. Fine-grained concretes yuav tsum tau npaj siv xuab zeb ntawm thawj pab pawg nyob rau hauv ib lub ntim ntawm 20 mus rau 50% ntawm tag nrho cov loj. Qhov ntim ntxiv yuav yog ib feem thib ob zoo.