Reinforced concrete density: hom, density xam

2024 Tus sau: Henry Conors | [email protected]. Kawg hloov kho: 2024-02-12 07:55

Qhov ntom ntawm cov pob zeb muaj zog yog ib qho ntawm cov yam ntxwv tseem ceeb ntawm cov khoom siv no, uas yog cov qauv muaj zog tshwj xeeb. Nws muaj ntau qhov zoo, tab sis kuj muaj qhov tsis zoo, qhia hauv qhov hnyav hnyav. Cov kws tshaj lij tau muab qhov no rau ntawm theem ntawm kev tsim thiab kev tsim cov chaw. Cov yam ntxwv ntawm cov pob zeb muaj zog no kuj tseem yuav tsum tau coj mus rau hauv tus account thaum dismantling cov qauv, nyob rau hauv tus txheej txheem ntawm dismantling lawv.

Hauv kev xyaum, cov pob zeb muaj zog yog dav siv tsis yog hauv kev lag luam xwb, tab sis kuj tseem siv hauv kev tsim kho. Koj tuaj yeem npaj qhov sib tov rau kev tsim cov pob zeb uas muaj zog ntxiv rau koj tus kheej, nrog rau khi qhov cuab lub zog siv cov hlau tshwj xeeb. Qhov tshwm sim yog kev tsim kho thiab ruaj khov.

ntau yam ntawm cov pob zeb tseem ceeb

Cov pob zeb ua kom muaj zog tuaj yeem sib txawv, uas yuav cuam tshuam los ntawm kev sib xyaw ntawm cov tshuaj. Qhov hnyav nyob ntawm qhov ntom. Reinforced qhob yog cais tawm los ntawm cov yam ntxwv no, ntawm lwm tustseem ceeb:

• tshwj xeeb hnyav;
• hnyav;
• lite;
• lub teeb yuag yuag.

Qhov ntom ntawm cov pob zeb ua kom muaj zog hauv thawj rooj plaub yog txwv rau 2500 kg / m 3, uas yog qhov txiaj ntsig zoo. Hauv kev tsim vaj tsev engineering, hom pob zeb no tsis siv. Cov khoom sib xyaw tuaj yeem muaj cov chaw tuav hauv qab no:

• magnetite;
• limonite;
• barite.

Reinforced concrete density

Cov pob zeb hnyav muaj qhov qis me ntsis, nws yog 2200 kg / m ³. Ntawm cov khoom xyaw ntawm cov khoom siv no yog cov pob zeb paub ntau dua, cov pob zeb crushed, thiab lwm yam. Qhov ntom ntawm cov pob zeb uas muaj zog ntxiv yuav qis dua thaum nws los txog rau cov pob zeb sib sib zog nqus. Qhov no yog cov pob zeb hnyav nrog hlau reinforcement thiab los ntawm cov dav hlau. Nyob rau hauv cov ntaub ntawv no, qhov parameter ntawm paj yuav yog 1800 kg/m^3.

Qhov ntom ntom ntawm cov pob zeb sib sib zog nqus

Lub teeb pob zeb muaj qhov ntom ntawm 500 kg / m ³. Qhov no parameter yog yam ntxwv ntawm nthuav av nplaum, cellular, perlite thiab polystyrene concretes. Cov khoom no yog ntxiv dag zog rau lub zog. Qhov nruab nrab ntom ntom ntawm cov pob zeb ua kom muaj zog tsis yog nyob ntawm qhov muaj pes tsawg leeg xwb, tab sis kuj yog nyob ntawm txoj kev ntawm pouring. Yog tias cov kua dej sib xyaw ntxiv yog siv cov tshuab vibratory, qhov ceev yuav nce 100 kg / m ^3.

Density xam

Qhov ntom ntawm cov pob zeb muaj zog, cov hom uas tau piav qhia saum toj no, tuaj yeem txiav txim siab yog lub hauv pausnoj cov proportions ntawm cov tshuaj nyob rau hauv units ntawm loj. Cov kua yuav tsum raug cais tawm ntawm kev suav, uas yuav tag nrho evaporate los ntawm array tom qab 28 hnub. Qhov no yuav tso cai rau koj kom tau txais qhov ceev ntawm lub monolith.

Qee zaum cov neeg tsim khoom siv cov ntaub ntawv nruab nrab yog tias lub npe ntawm cov pob zeb paub. Piv txwv li, rau qib M-200, qhov ceev yuav txawv ntawm 2385 txog 2400 kg/m³, hos rau qib M-250 tus nqi no yuav txawv ntawm 2390 txog 2405 kg/m. ³. Rau qib M-300, M-350 thiab M-400, qhov ceev yuav nyob rau hauv thaj tsam ntawm 2400 txog 2415; Los ntawm 2405 txog 2420 thiab los ntawm 2410 txog 2430 kg / m^{3 raws.}

Yog tias koj xav tau qhov tshwj xeeb lub ntiajteb txawj nqus ntawm cov pob zeb uas muaj zog, ces koj yuav tsum paub tias qhov hnyav ntawm ib lub cubic meter kuj cuam tshuam los ntawm cov tswv yim txhawb nqa. Nws yog ib qho tseem ceeb tsis tau tsuas yog tus naj npawb ntawm cov pas nrig, tab sis kuj lawv cov hlaws. Cov kev txwv no tso cai rau koj los txiav txim siab qhov ntim sab hauv uas nyob ntawm qhov kev txhawb nqa. Tom qab ntawd, koj tuaj yeem ua tiav cov lej suav. Nyob ntawm lub hom phiaj thiab cov duab ntawm cov pob zeb uas muaj zog, cov pas nrig sib txawv tuaj yeem siv tau. Raws li rau lawv cov styling, lawv tuaj yeem nyob ntawm qhov deb ntawm ib leeg.

Txhawm rau nrhiav kom pom qhov ntom ntom ntawm monolithic txhawb cov pob zeb ua, qhov tseeb tshwj xeeb tsis xav tau, yog li tus nqi ntawm kev nce qib tuaj yeem coj mus txog. Yog li, nyob rau hauv kev tsim cov pob zeb txoj kev thiab qhov muag tsis pom kev, 8 hli reinforcement nrog mesh qhov ntau thiab tsawg ntawm 200 hli feem ntau yog siv. Ib square meter ntawm cov khoom yuav muaj 16 m ntawm rods, thiab yog hais tias lub steel ntom yog 7850 kg / m3, ces qhov hnyav ntawm qhov reinforcement yuav yog 6.3 kg.

Thaum nws los txog rau kab kab kab rov tav nrog kev txhawb nqa, slabs thiab hauv paus, txoj kab uas hla ntawm qhov kev txhawb nqa feem ntau txawv ntawm 12 txog 16 hli. Lub cell loj yog txo mus rau 180 mm, thaum lub sij hawm tag nrho qhov ntev tseem zoo li qub. Hauv qhov no, qhov hnyav ntawm qhov kev txhawb nqa yuav yog qhov txwv ntawm 14 txog 25.2 kg. Rau cantilever kab teeb thiab hauv pem teb slabs, txoj kab uas hla ntawm qhov cuab lub zog yog nyob nruab nrab ntawm 16 thiab 18 mm, qhov no muaj tseeb yog hais tias lub cell loj yog 130 hli. Tag nrho qhov ntev ntawm qhov kev txhawb nqa ib 1 m 3ntawm cov pob zeb muaj zog yuav yog 49 m, nyob rau hauv cov ntaub ntawv no qhov kev txhawb zog yuav txawv ntawm 77.3 txog 97.8 kg.

Qhov ntom ntawm cov qauv ntxiv

Nws yuav yog qhov ncaj ncees los txiav txim siab qhov kev xaiv nrog cov phab ntsa ntsug thiab kab. Nyob rau hauv cov ntaub ntawv no, txoj kab uas hla ntawm lub reinforcement yuav sib npaug zos rau qhov txwv ntawm 14 mus rau 18 mm nrog ib tug mesh loj ntawm 130 mm. Tag nrho qhov ntev tseem zoo ib yam, tab sis qhov hnyav yuav sib npaug ntawm qhov txwv ntawm 59.2 txog 97.8 kg.

sai li sai tau qhov nyiaj ntawm cov khoom siv ua kom pom tseeb, nws yuav ua tau los txiav txim siab qhov hnyav ntawm ib lub cubic meter of moolic. Los ntawm lub voos xwmfab, qhov nruab nrab ntim yog txiav txim siab, uas yog nyob los ntawm steel rods. Qhov kawg tshwm sim yog qhov ntim ntawm pob zeb, tom qab ntawd cov lej tau muab faib ua qhov tshwj xeeb lub ntiajteb txawj nqus rau txhua yam khoom, thiab cov txiaj ntsig tau ntxiv.

Xaiv ntawm qhov ntom siv piv txwv ntawm ib txoj hlua txuas ntxiv pob zeb hauv paus

Cov pob zeb ua kom muaj zog (kg / m3) tuaj yeem suav ua piv txwv ntawm lub hauv paus sawb, uas yog ua los ntawm M-300 qib pob zeb. Hauv qhov no16 hli rods tau siv. Nyob rau hauv thawj theem, lub ntim nyob rau hauv lub reinforcement nyob rau hauv ib tug cubic meter ntawm cov khoom yog txiav txim. Ua li no, siv cov kev suav nram qab no: π r2 L=3.14 (0.008)2 16=0.003 m3.

Cua pob zeb yuav siv 0.997m³. Txhawm rau xam qhov loj ntawm cov khoom siv ntxiv, muab cov txiaj ntsig ntau: 0.003x7850, vim li ntawd, nws yuav ua tau kom tau 23.6 kg, thaum qhov loj ntawm cov pob zeb yuav tsum tau suav los ntawm kev sib faib 0.997x2400. Kev suav yuav ua rau nws nkag siab tias qhov loj ntawm pob zeb yog 2392.8 kg. Tom qab cov txiaj ntsig tau sau tseg, koj tuaj yeem tau txais qhov ntom ntawm cov pob zeb ua kom muaj zog, cov kev suav no yuav zoo li no: 23, 6 + 2392, 8=2416 kg / m^{3. manipulations yog nqa tawm nyob rau hauv lub tsim theem loads ntawm lub tsev foundation.}

Cov ntaub ntawv ceev ceev

Qhov ntom ntawm cov pob zeb thiab pob zeb yuav tsum paub rau cov neeg tsim khoom. Yog tias thawj tus nqi tau piav qhia meej saum toj no, ces qhov thib ob yog tsim nyog tham txog. Qhov taw qhia kev ua haujlwm tseem ceeb rau kev ua vaj tse yog cov lus teb rau qhov sib xws thiab compression, nrog rau lub zog. Cov yam ntxwv tau teev tseg yog tswj hwm los ntawm qhov ceev, uas yog lub cev qhia tau txiav txim siab los ntawm kev faib huab hwm coj los ntawm ntim.

Hauv kev tsim kho, nws yog kev cai siv tus nqi nruab nrab ntawm qhov ntsuas no, vim tias nws cuam tshuam los ntawm ntau yam, suav nrog:

• zoo thiab qhov loj ntawm cov muab tub lim;
• ntau yam khoom;
• Kwv Txhiaj Kwv Txhiaj;
• sand grain size.

Qhov ntom ntawm cov hom pob zeb tseem ceeb

Qhov nruab nrab ntom ntom yog siv los ua tus cwj pwm thiab suav tias yog qhov ntau yam uas cov khoom tau muab faib ua 4 hom. Piv txwv li, cov pob zeb hnyav muaj qhov ceev tshaj 2500 kg/m³. Qhov kev sib xyaw no yog tsim los ntawm cov khoom ntim, hlau ore, steel scraps, magnesite, thiab tsis siv rau kev tsim kho ib txwm muaj. Xws li lub siab ceev yog tsim nyog rau kev ruaj ntseg, yog li no pob zeb yog siv rau kev tsim kho ntawm cov qauv tshwj xeeb. Qhov nruab nrab qhov ntom ntom tsawg kawg yog kwv yees ntawm tus nqi qis dua tus nqi ntawm 500 kg/m^{3. Cov khoom siv no yog siv los ua cua sov-insulating fillers. Kev nkag siab ntau ntxiv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, qib thiab hom, nrog rau thaj tsam kwv yees ntawm kev siv, tuaj yeem ntsuas los ntawm kev nyeem cov ntaub ntawv hauv qab no.}

Tshwj xeeb yog cov pob zeb hnyav, uas tau tham saum toj no, yuav muaj cov qib hauv qab no: M550, M600, M700, M800, M900, M1000. Cov pob zeb hnyav muaj qhov ntom ntom ntawm 1800 txog 2500 kg / m ³, cov khoom siv rau cov khoom thauj khoom los ntawm hom kev tsim. Qib ntawm cov pob zeb zoo li no: M350, M450, M500. Cov pob zeb sib sib zog nqus muaj qhov ntom ntom ntawm 500 txog 1800 kg / m ³, qib tuaj yeem txhais los ntawm cov npe hauv qab no: M200, M250, M300. Cov pob zeb uas muaj zog tshwj xeeb muaj qhov ntom ntom ntawm 500 kg / m ^{3, thiab lawv cov qib muaj raws li hauv qab no: M15, M50, M75, M100, M 150. Cov khoom siv no yog siv los tsim ib qho Thaum tshav kub kub-insulating txheej thiab tsim phab ntsa.}

Zoo kawg

Cov pob zeb ua kom muaj zog yog kev sib xyaw ntawm cov hlau thiab pob zeb uas muaj cov khoom tshwj xeeb. Lub zog, kev cia siab thiab durability ntawm cov khoom tso cai rau nws siv dav hauv kev tsim kho. Thaum tsim cov qauv, ntau tus yam ntxwv raug coj mus rau hauv tus account, ib qho ntawm lawv yog qhov ntom ntawm cov pob zeb uas muaj zog, t / m3 lossis kg / m^{3 - cov no yog lub cev muaj nuj nqis uas qhov ntsuas no yog feem ntau ntsuas. Piv txwv li, yog tias koj paub qhov ceev, uas yog sib npaug rau 2200 kg / m} 3^{, ces koj tuaj yeem hloov tus nqi no rau tons ib cubic meter. Hauv qhov no, tus nqi no yog 2, 2.}