Xuab zeb pob zeb hauv pob zeb ua ke yog qhov sib sau ua ke loj. Cov pob zeb no nws muaj nws tus kheej xav tau, vim nws muab lub zog ntawm cov khoom siv ua vaj tse. Granite crushed pob zeb muaj cov yam ntxwv ua tau zoo tshaj plaws.
Pob zeb tsoo yog cov khoom lag luam ntawm pob zeb ua. Muaj ntau ntau hom pob zeb no, thiab txhua tus ntawm lawv muaj lub zog siab yam ntxwv.
Vim li cas cov pob zeb zuaj ntxiv rau pob zeb ua?
Lub zog ntawm tej pob zeb yog ntau zaus ntau dua li lub zog ntawm cov qhob zoo tshaj plaws. Yog li ntawd, txhawm rau kom tiv taus qhov hnyav thiab lwm yam nrawm, pob zeb tsoo yog ntxiv rau cov cement-sand mortar. Cov qhob no hu ua hnyav. Reinforcement los yog lwm txoj hauv kev hlau muab tso rau hauv nws thiab cov khoom siv khov kho yog tsim: cov nplhaib, cov tsev txuas, cov pob zeb pem teb, thiab lwm yam.
Pob zeb pob zeb yog qhov loj sib sau ua ke, nplua yog xuab zeb. Cov qib pob zeb ua tiav nyob ntawm lub zog ntawm pob zeb thiab siv hom cement siv. Qhov nruab nrab feem ntawm pob zeb crushed yog siv los ua cov muab tub lim - 20/40 hli. Nws tuaj yeem muaj lub zog sib txawv, nyob ntawm hom pob zeb uas nws tau ua. Muaj qee kis, qhov nyuaj ntawm cov pob zeb tuaj yeem ncav cuag 1000 MPa thiab siab dua. Qhov kev sib xyaw ua ke no yog siv los ua kom cov qib siab ntawm cov pob zeb.
Rau kev tso rau hauv cov cement-sand mortar, cov pob zeb tsoo los ntawm ferroalloy thiab blast-furnace slags, tooj liab smelting thiab npib tsib xee kuj tsim nyog. Nws tuaj yeem siv rau kev txhim kho cov hauv paus thiab tsim cov qauv tsev. Ua ntej siv, crushed pob zeb ntawm hom no yuav tsum tau sim rau qhov tsis muaj hluav taws xob hauv nws.
Lwm qhov laj thawj yog vim li cas pob zeb pob zeb yog ib feem ntawm cov pob zeb ua ke yog qhov tseem ceeb shrinkage ntawm xis mas thaum nws hardens. Qhov txheej txheem cuam tshuam nrog txoj kev no thiab tiv thaiv cov pob zeb ua kom tawg. Hauv kev ua haujlwm ntawm kev tsim kho, lawv tau ua raws li txoj cai hauv qab no: qhov ntau dua tuab ntawm cov qhob txheej, qhov loj me tshaj cov zauv feem yuav tsum yog. Tus nqi ntawm cov pob zeb zuaj lossis cov pob zeb nruab nrab yuav tsum yog tsawg kawg 30% ntawm tag nrho cov ntim ntawm cov cement-sand mortar.
Cov duab ntawm cov pob zeb crushed hauv pob zeb tseem tseem ceeb. Qhov ze nws yog rau cov square, lub pob zeb ntau yuav haum rau hauv kev daws. Yog li ntawd, nws yuav muaj zog dua. Tus nqi ntawm cov khoom siv zoo li no yog me ntsis siab dua cov ntawm cov pob zeb zoo tib yam crushed. Thaum muas pob zeb, them sai sai rau qhov feem pua ntawm cov teeb meem tsis zoo hauv lawv. Nws muaj cov qauv uas txiav txim siab pom zoo rau cov tshuaj mineralogical muaj pes tsawg leeg ntawm cov aggregate. Raws li lawv, cov pob zeb tsoo rau pob zeb yuav tsum tsis muaj ntau tshaj 1.5% sulfites, 4% pyrites, 1% thee, thiab lwm yam.
Lub pob zeb twg tawg yog cov muaj zog dua?
Lub zog siab tshaj plaws yog muab los ntawm crushed granite. Nws muaj cov yam ntxwv ua tau zoo tshaj plaws. Tab sis cov pob zeb no yog ib qho kim tshaj plaws, yog li ntawd, nws tsis tshua muaj siv rau kev tso hauv cov cement-sand mortar. Nws txoj kev siv ntau dua yog xws li khoom siv dai kom zoo nkauj hauv cov qauv toj roob hauv pes.
