Aerated pob zeb yog cov khoom siv pob zeb ntawm cov khoom siv dag zog, suav nrog qee yam khi thiab muaj cua ntau
ci hlwb uas sib npaug sib npaug hauv. Tam sim no muaj ntau hom ntawm lawv. Gradation tshwm sim raws li qhov tsis xws li hom kev sib khi, kev ua haujlwm, hardening tej yam kev mob thiab lwm yam.
Kev faib tawm
Nyob ntawm cov ntawv khi, cellular concretes tau muab faib ua cov hauv qab no - ua npuas ncauj thiab aerated qhob, ua npuas ncauj gypsum thiab roj gypsum, ua npuas ncauj silicate thiab roj silicate, nrog rau ua npuas ncauj magnesite thiab roj magnesite. Nyob rau hauv thawj rooj plaub, lub binder yog cement, nyob rau hauv lub thib ob, gypsum ntawm nce lub zog, nyob rau hauv lub thib peb, limestone, thiab nyob rau hauv lub plaub, ib tug magnesian tivthaiv.
Raws li qhov ntsuas qhov ntsuas raws li qhov kev siv, cov pob zeb tau muab faib ua cua sov-insulating thiab cov qauv-tshav kub-insulating. Qhov kawg tau hais txog cov khoom siv ntawm tes (blocks) yog tus cwj pwm los ntawm kev ua kom muaj zog thiab tuaj yeem siv rau kev tsim kho ntawm cov khoom siv thauj khoom.
Raws li txoj kev tawv tawv, muaj ntuj thiabtxujci. Thawj hom hardens nyob rau hauv kev cuam tshuam ntawm atmospheric tej yam kev mob, thiab lub thib ob - vim chav kho mob.
History of Appearance
Thawj cov ntaub ntawv keeb kwm hais txog cov khoom siv hauv tsev xws li cellular pob zeb hnub rov qab rau xyoo 1889. Ces tus kws tshawb fawb Czech Hoffman tau txais aerated qhob los ntawm d
ntxiv chloride thiab carbonic ntsev rau cement mortar. Raws li qhov tshwm sim, muaj tshuaj lom neeg tshwm sim, raws li qhov tshwm sim ntawm cov roj tau tso tawm. Thaum lub sij hawm, cov tshuaj hardened, thiab ib tug ntxeem tau qauv tsim nyob rau hauv nws. Kaum tsib xyoos tom qab ntawd, cov neeg Asmeskas Dyer thiab Aulsworth siv hmoov ua lub tshuab hluav taws xob, uas suav nrog cov khoom tsis huv ntawm zinc, txhuas thiab ntau lwm yam hlau. Raws li qhov tshwm sim ntawm kev sib cuam tshuam, hydrogen raug tso tawm, uas ua lub luag haujlwm ntawm kev ua kom muaj zog ntxiv. Nws yog qhov kev tsim kho tshiab no uas tau tsim lub hauv paus rau kev tsim khoom niaj hnub ntawm aerated qhob.
Ib qho txiaj ntsig zoo rau kev tsim cov khoom siv hauv tsev no yog tsim los ntawm Swedish inventor Ericsson. Xyoo 1920, nws tau thov kom swell cov tshuaj los ntawm kev ntxiv cov tshuaj siliceous thiab cement. Hardening nyob rau hauv cov ntaub ntawv no yuav tsum tau muaj nyob rau hauv ib tug autoclave ntawm ib tug siab ntawm 8 atmospheres. Tom qab ntawd, cellular concretes nyob rau hauv ib txoj kev zoo sib xws pib tsim nyob rau hauv Sweden nws tus kheej, thiab ces nyob rau hauv lwm lub xeev. Thaum lub sij hawm, ob ntau yam ntawm lawv tau tsim ib zaug. Thawj qhov ntawm cov no yog cov roj silicate, uas yog pob zeb nrog cov qauv ntxeem tau, uas suav nrog kev sib xyaw ntawm cov txiv qaub thiab silica additives. Xyoo 1934, ib hom thib ob tshwm sim - siporex, -cos
ua los ntawm silica cov ntsiab lus thiab Portland cement.
Modern production and scope
Feem ntau, cellular pob zeb (GOST 21520-89) yog tam sim no tsim nyob rau hauv daim ntawv ntawm cov blocks. Lawv suav hais tias yog ib qho ntawm cov khoom siv hauv tsev ntau tshaj plaws (nrog rau ceramic cib). Raws li rau lub Scope, nws yog heev nthuav, vim hais tias txhua yam yog tsim los ntawm xws li blocks, pib nrog zoo tib yam sab hauv partitions thiab xaus nrog load-bearing phab ntsa. Tus qauv thaiv loj yog 600x300x200 millimeters. Txawm li cas los xij, lwm tus yog tsim los ntawm kev txiav txim tshwj xeeb. Nyob rau hauv rooj plaub thaum qhov ceev ntawm lub phaj yog tsawg tshaj li tsib puas kilograms ib cubic meter, nws tseem siv tau raws li ib tug tshav kub-insulating txheej.
