Lub thermal conductivity ntawm npuas thaiv yog vim qhov tseeb tias nws muaj cellular, uas yog, ntxeem tau qauv. Nws yog vim qhov no uas tsis tshua muaj coefficient ntawm cov txheej txheem teev tseg yog tsim. Nws yog qhov ua tau kom tau txais cov qauv ntxeem tau ntawm cov khoom siv vim qhov tseeb tias cov khoom siv foaming tau ntxiv rau qhov muaj pes tsawg leeg. Tus naj npawb ntawm cov pores, thiab li no cov coefficient ntawm thermal conductivity ntawm npuas block, nyob ntawm tus nqi ntawm cov additive no. Qhov kev vam meej hauv qhov no yog qhov yooj yim heev: qhov pores ntau dua, tus nqi qis dua ntawm qhov ntsuas no.
thermal conductivity yog dab tsi? Ua npuas ncauj qib
Pib nrog dab tsi yog thermal conductivity thiab vim li cas nws thiaj li tseem ceeb. Qhov no yog qhov taw qhia uas qhia tias cov khoom siv hluav taws xob ntau npaum li cas tuaj yeem muab tawm hauv qee lub sijhawm. Hauv lwm lo lus, qhov kub npaum li cas yuav dhau los ntawm phab ntsa ib chav tsev ntawm lub sijhawm. Nws paub meej tias vim li cas qhov ntsuas no tseem ceeb heev rau cov khoom siv hauv tsev. Cov cim tseem ceeb uas cuam tshuam rau kev tsim cov thermal conductivity yog qhov ntom ntawm cov npuas npuas thiab nws cov av noo.
Tam sim no, muaj peb hom raw khoom:
- pob zeb ua npuas ncauj;
- tshav kub-insulating npuas thaiv;
- cov khoom tsim thiab cov khoom siv hluav taws xob kub.
qauv thiab thermal rwb thaiv tsev thaiv
Pib nrog lub tsev thaiv. Nws txawv ntawm qhov nws qhov ntom yog qhov loj tshaj plaws ntawm txhua hom, thiab tus naj npawb ntawm pores yog tsawg. Vim li no, cov thermal conductivity ntawm hom npuas npuas no yog qhov siab tshaj plaws thiab nyob rau hauv thaj tsam ntawm 0.29-0.38 W / m K. Feem ntau, cov khoom siv no tsuas yog siv rau kev tsim kho ntawm lub hauv paus thiab cov khoom siv thauj khoom ntawm cov tsev. Tab sis nyob rau tib lub sijhawm, nws yuav tsum nkag siab tias, vim qhov siab coefficient ntawm cov hluav taws xob hluav taws xob, nws yuav tsim nyog los nteg cov khoom siv hluav taws xob ntxiv. Txog niaj hnub no, cov pob zeb ua npuas dej no muaj nyob hauv qib ntawm D900 txog D1200.
Raws li rau thermal conductivity ntawm npuas thaiv ntawm cov cua sov-insulating hom, nws yog, ntawm chav kawm, qhov zoo tshaj plaws. Tus lej ntsuas ntawm tus yam ntxwv no yog 0.09-0.12 W / m K. Txawm li cas los xij, nws ua raws los ntawm qhov no tias cov qauv muaj cov cell loj tshaj plaws, uas yog, qhov pores. Vim li no, lub zog yog phem dua li ntawm ob hom. Nws tsis raug tso cai los tsim ib lub tsev los ntawm xws li ib tug ua npuas ncauj thaiv. Nws tsuas yog siv tau los ua cov khoom siv hluav taws kub-insulating rau cov qauv uas twb muaj lawm. Cov khoom siv hauv tsev ntawm pawg no yog cim los ntawm D300 txog D500.
khoom sib xyaw
Hom thib peb yog cov txheej txheem thiab cov txheej txheem cua sov. Los ntawm lub npe nws ua raws li nws muaj qhov zoo ntawm ob pawg dhau los. Txawm li cas los xij, lawv muaj qhov ntsuas nruab nrab ntawm ob lub zog thiab thermal rwb thaiv tsev - 0.15-0.29 W / m K. Tab sis,txawm li cas los xij, nws yog cov khoom siv no feem ntau siv rau kev tsim tsev sov. Lub ntsiab ntawm daim ntawv thov yog kev tsim kho tus kheej ntawm cov tsev nyob. Raws li rau lub cim, qhov no suav nrog ua npuas ncauj los ntawm D500 txog D800.
Thaiv khoom thiab masonry nta
Nws tsim nyog hais tias xaiv lub npe zoo ntawm cov npuas thaiv rau kev tsim tsev yuav tsis txaus. Nws yog ib qho tseem ceeb heev kom nteg cov khoom siv hauv tsev kom zoo. Qhov sib txawv loj yog tias koj tsis tuaj yeem siv cov cement-sand mortar. Qhov no yog vim qhov tseeb tias nws siv yuav txo cov thermal conductivity ntawm cov blocks. Txhawm rau kom tsis txhob muaj qhov tsis xws luag, siv cov kua nplaum tshwj xeeb. Lwm qhov tseem ceeb tshaj plaws yog lub thickness ntawm seam. Nws yuav tsum tsis txhob ntau tshaj 2-3 mm. Yog hais tias lub seam yog thicker, ces hu ua txias txuas hniav yuav tsim vim lub zog ntawm lub npuas block. Ib feem tseem ceeb ntawm cov cua sov yuav dhau los ntawm lawv, uas yog qhov tsis txaus ntseeg.
Yuav kom ua tiav cov masonry feem ntau thiab cov tuab tuab ntawm cov seam, nws yog ib qho tseem ceeb heev uas yuav tau yuav cov khoom ua npuas ncauj zoo uas yuav muaj qhov tseeb geometric duab. Lwm txoj cai tseem ceeb yog tias nws tuaj yeem tsim lub tsev sov los ntawm cov pob zeb ua npuas tsuas yog tias koj tam sim yuav cov khoom siv hauv tsev los ntawm ib lub chaw tsim khoom. Kev yuav khoom hauv ntau qhov chaw lossis lub sijhawm sib txawv tsis tau lees paub qhov tseeb tshaj plaws kev sib koom ua ke ntawm qhov loj, vim tias cov masonry yuav tawg, cov seam yuav hloov thiab ib feem tseem ceeb ntawm cov rwb thaiv tsev thermal yuav ploj.
txheej txheemkev ua haujlwm
Vim cov npuas npuas yog ib hom pob zeb uas muaj cov qauv ntawm tes, qee cov ntaub ntawv raw yog tib yam, tab sis muaj qee qhov nuances. Cov ntaub ntawv tseem ceeb rau kev tsim cov blocks xws li:
- cov khoom ntxiv tsim los txhim kho kev ua haujlwm;
- synthetic yam tshuab tshuab.
Tam sim no, muaj peb txoj hauv kev los tsim ua npuas ncauj.
Txoj kev yooj yim tshaj plaws thiab feem ntau classic yog pub cov neeg ua npuas dej rau hauv cov cement sib tov uas twb tau npaj lawm siv cov cuab yeej xws li lub tshuab ua npuas dej. Cov sib tov tiav yuav tsum tau sib tov zoo, tom qab uas nws tau muab tso rau hauv ib chav tshwj xeeb uas yuav tswj tau qhov kub thiab txias rau cov khoom kom tawv.
Muaj ib txoj kev ntawm cov ntxhia qhuav qhuav, uas txawv ntawm qhov uas tus neeg sawv cev foaming tau nkag rau hauv qhov sib tov qhuav, tag nrho cov khoom xyaw yog tov thiab tsuas yog tom qab ntawd dej ntxiv. Ua npuas ncauj blocks ua nyob rau hauv txoj kev no muaj lub zog zoo, tab sis thermal conductivity deteriorates. Txoj kev no yog qhov zoo tshaj plaws rau kev tsim khoom tas mus li.
Txoj kev kawg yog barotechnology. Nws txhais tau hais tias sib tov tus neeg sawv cev foaming ua ntej nrog cov kua, thiab tsuas yog tom qab ntawd tag nrho lwm cov khoom ntxiv. Tsis tas li ntawd, cov chav siab tshwj xeeb tau siv ntawm no, uas txhawb nqa cov txheej txheem ntawm kev sib xyaw ntawm qhov xav tau overpressure.
Kev tshuaj xyuas thiab cov yam ntxwv ntawm cov npuas npuas
Raws li cov yam ntxwv ntawm cov khoom no, qhov nruab nrab hauv qab no tuaj yeem muab tauntsuas. Qhov ceev ntawm cov khoom yog los ntawm 600 mus rau 1000 kg / m 3 , thermal conductivity nyob rau hauv 0.14-0.22 W / m K, lub zog yog 15-25 kgf / cm2, dej nqus - los ntawm 10 mus rau 16% ntawm qhov loj ntawm qhov thaiv, Frost tsis kam yog txiav txim siab hauv cov voj voog thiab qhov nruab nrab pib los ntawm 35 mus. Rau thaj chaw huab cua nruab nrab, qhov pom tau zoo ntawm phab ntsa ua npuas ncauj nrog cov yam ntxwv zoo li no yog 0.6 m.
Raws li kev tshuaj xyuas, ntau yam tau hais txog qhov zoo hauv qab no: kev txuag nyiaj tseem ceeb hauv kev tsim kho lub hauv paus, cov duab ntawm cov blocks loj, uas txo cov khoom siv thiab txo lub sijhawm rau kev txhim kho phab ntsa.
Ib qho ntawm qhov tsis zoo yog tias cov khoom siv no tsis yooj yim heev thiab nws yuav tsis ua haujlwm rau mount hnyav hinged lug ntawm cov phab ntsa.
