Yuav ua li cas yog tus luj ntawm 1 m3 qhob

Tam sim no, raws li ntau centuries dhau los, lub pob zeb no tej zaum qhov feem ntau cov ntaub ntawv uas rau kev tsim kho. Nws yog siv thaum ua tau zoo ntau yam ntawm kev tsim kho ua hauj lwm - los ntawm overhauls rau qhov kev siv ntawm tej vaj tse. Txawm li cas los, mus nqa tawm tej chaw ua hauj lwm tus thawj yam uas koj xav kom xam tus nqi ntawm cov ntaub ntawv uas yuav tsum tau, noj mus rau hauv tus account nws tus yam ntxwv. Piv txwv li, yog cov builders feem ntau ib tug kev sib tw los mus txiav txim tus luj ntawm lub cubic Meter ntawm nws. Yog li ntawd, qhov no tsab xov xwm tsom rau cov nqe lus nug ntawm yog dab tsi tus luj ntawm 1 m3 ntawm qhob.

Los ntawm tej yam nyob rau hauv lub loj ntawm qhob

Ua ntej ntawm tag nrho cov, nws yuav tsum tau muab sau tseg tias builders tsis txhob siv xws li ib tug tshaj plaws li "cov kev luj ntawm lub pob zeb ua." Qhov no yog vim lub fact tias lub tsev cov ntaub ntawv uas nyob rau hauv nws muaj pes tsawg leeg yuav muaj ib tug ntau yam ntawm cheebtsam uas muaj ntau tes taw hnyav li.
Yog li, raws li ib tug tub lim yuav siv tau:
• gravel.
• Gravel.
• Cov av nplaum thiab lwm tus neeg.
Txawm yog hais tias, qhov kev npaj ntawm qhob mortar yog siv tib yam pes tsawg leeg, qhov hnyav ntawm 1 m3 qhob yuav varied nyob rau hauv tus neeg mob qhov twg lub muab tub lim muaj ntau feem. Qhov loj qhov feem, lub loj voids nyob rau hauv cov khoom thiab, raws li, tsawg loj.

Txawm li cas los, builders tseem xav nyob rau hauv hnyav yam ntxwv, vim hais tias ntawm tus nqi ntawm no Performance index nyob rau ntau cov yam ntxwv ntawm lub executable khoom. Piv txwv li, ua hauj lwm nyob rau hauv lub hauv paus ntawm cov ntaub ntawv no, muab xam los ntawm tus luj , thiab yog xaiv rau bases rau ntau hom kev av. Tib yam siv rau lwm yam load-tau cov kabmob hais.

Nyob rau hauv kev xyaum builders siv ib tug parameter, hu ua "tej ceev." Tab sis qhov no feature tsis muaj ib tug tsis tu ncua nqi. Nyob rau hauv tas li ntawd, cov lus teb yuav tsum coj mus rau hauv tus account tus luj ntawm kua thov nyob rau hauv qhov kev npaj ntawm cov tshuaj.

qhob ntau ntau yam

Los ntawm hom ntawm phau ntawv, lub tuam tsev no cov ntaub ntawv uas sib cais rau MAAs, txiv qaub, shlakoshchelochnyh, asphalt thiab lwm tus neeg. Los ntawm lub hom phiaj cais li ib txwm concretes (rau pej xeem thiab cov muaj tsev), tshwj xeeb (rau txoj kev, zoo nkauj, insulating, hydraulic) thiab tshwj xeeb lub hom phiaj (sib resistant, suab-absorbing, Thaum tshav kub kub-resistant tiv thaiv nuclear tawg, lwm yam).

yam ntxwv ntawm qhob

Raws li ib tug yooj yim taw qhia characterizing ua vaj tse, lub compressive zog siv. Qhov no yam ntxwv txiav txim seb tus hauv chav kawm ntawv ntawm qhob, qhia los ntawm cov tsab ntawv "B" (Latin), thiab cov nuj nqis denoting (nyob rau hauv kg / cm²) load peev xwm. Piv txwv li, B25-nqi ntawd hais tias hoob kawm no ntawm qhob tsim rau ib tug load ntawm 25 kg / cm. Thaum xam cov ntsuas ntawm lub dag lub zog ntawm cov lug yuav tsum coj mus rau hauv tus account yam. Piv txwv li: kev ua vaj tse qib B25 ntawm ib tus nqi coefficient ntawm variation ntawm 13,5 feem pua los mas load 327 kg / cm, uas yog sib npaug rau M350 hom zog. Zog chav kawm ntawv V3,5 sau raws nkaus Ii hom zog M50, B10 - M150, B30 - M400 thiab B60 - M800.

Lwm yam tseem ceeb ntsuas muaj xws li cov pob zeb ua te kuj, FLEXURAL zog thiab cov dej kuj. Frost kuj yog denoted los ntawm «F» thiab tus naj npawb ntawm 50 mus rau 500, lub ntsiab lus hauv lub xov tooj ntawm zaus los ntawm lub xeev khov yaj thiab rov qab uas yuav tau withstand lub pob zeb. Rau dej kuj index siv tsab ntawv «W» thiab tus xov tooj ntawm 2 mus rau 12, uas qhia tau hais tias cov dej siab, uas txhawb nqa tus qauv ntawm qib kev ua vaj tse nyob rau hauv daim ntawv ntawm ib tug kheej kheej.

hnyav Txiav Txim

Reference ntaub ntawv rau cov volumetric luj ntawm lub pob zeb ua tseg nyob rau hauv SNP № II-3. Qhov no tus txheej txheem qhia txog cov kwv yees li luj ntawm pob zeb ntau ntau yam nyob rau hauv lub hom muab tub lim nws. Nws muaj ib tug luj ntawm qhob rooj uas koj yuav pom tau tias qhob khoom uas yus muaj los ntawm ib tug loj ceev (kg / m3) 2500 qhob nrog ib tug tub lim nyob rau hauv daim ntawv ntawm cov gravel los yog crushed pob zeb - 2400, nyob rau lub hauv paus ntawm txhab av nplaum txhab av nplaum xuab zeb - 500-1800, nyob rau lub hauv paus ntawm perlite - 800-1000. Nyob rau hauv lem, tus aerated qhob yog yus muaj los ntawm ib tug tej kev ceev ntawm 300-1000 kg / m3. Ntawm cov hoob kawm, tus luj ntawm 1 m3 qhob muaj ib tug approximate cim, tab sis cov ntaub ntawv no yog zoo suited rau lub hom phiaj ntawm kev sib hais haum. Tom qab tag nrho cov ntaub ntawv yog muaj tseeb mus rau ib tug ob peb kilograms yuav tsis muab tej account.

Qhob Nyhav nyob ntawm lub hom

Builders yog feem ntau txiav txim los ntawm qhov hnyav ntawm 1 m3 qhob, nyob ntawm seb lub qib. Heavy nws hom tsiag ntawv los ntawm cov nram qab no kev kwv yees. Nyhav qhob M200 yog 2430 kg / m3. Yuav kom kos M100 yuav siv tus nqi ntawm 2495 kg / m3. Nyhav qhob M300 - 2390, thiab rau cov qhab nia M400 thiab M500 yuav coj lub qhov tseem ceeb 2375 thiab 2300 kg / m3, ntsig txog.

Yog li, nyob rau hauv qhov tsab xov xwm ntau qhov tseem ceeb yuav siv tau los kwv lam engineering suav nyob rau hauv cov kev kho thiab kev tsim kho tej hauj lwm.