TsimScience

Cov kev ceev ntawm cov xuab zeb

Xuab zeb tib neeg ntev tau muab siv rau kev tsim kho cov hom phiaj, tsis muaj ib lub tsev yog tsis raws nraim tsim. Nws yog dav siv nyob rau hauv qhuav siv mixtures, uas yog muag nyob rau hauv khw muag khoom noj los yog raws li ib feem rau kev npaj ntawm MAAs cug. Siv cov kev faib xuab zeb yog thov nyob ntawm seb nws ceev, piv txwv li, tej hom yog siv los ua ib tug masonry mortar, lub lwm yam nyob rau kev txiav txim los mus tsim ua vaj tse Screed.

Xuab zeb - ib tug nonmetallic, nrog xoob kev ntxhib los mos tsev ntaub. Feem ntau, ib tug sib tov ntawm grain loj ntawm 0,14-5 hli, uas raug tsim thaum lub sij hawm ntawm kev puas tsuaj ntawm tej yam ntuj tso pob zeb. Muaj ntau ntau hom ntawm cov xuab zeb. Lawv tsiag ntawv los ntawm cov ntsiab lus ntawm zoo hais ntawm av nplaum los yog tsuas yog hmoov av ntsiab.

Lub purest ntawm lawv, thiab lub siab tshaj plaws zoo - qhov no yog dej xuab zeb. Tubrog nkoj loj tuaj lawm, vim nws yog twb yog ib feem ntawm lub ntsev, los ntawm uas nws yuav tsum tau ntxuav. Qhov xuab zeb thiab pob zeb tsiag ntawv los ntawm xub ntiag ntawm pliaj av nplaum, thiab chaw pib lub zoo ntawm cov khoom hauv qab no. Xuab zeb feem ntau muaj cov muaj pes tsawg leeg: quartz, feldspars, thiab impurities nyob rau hauv daim ntawv ntawm cov silicates thiab ntawm tib av nplaum.

Rau cov yam ntxwv ntawm lub tuam tsev no cov ntaub ntawv uas muaj xws li ib tug tshaj plaws raws li cov kev ceev ntawm cov xuab zeb. Nws yog kwv yees li porosity ratio. Piv txwv li, zoo qib muaj index ntawm 0.75. Ceev cov xuab zeb siv, nws zoo yog yeej ib txwm txiav txim los ntawm qhov kuaj nyob rau ntawd ntawm av nplaum. Builders nyiam mus ua hauj lwm nrog ib tug tshwj xeeb kev coj dawb huv - River khoom. Nws muaj ib tug ntom ntawm 1.3 t. Ib cubic Meter. Cov kev ceev ntawm cov xuab zeb thiab av nplaum cov ntsiab lus yog twb saum toj no 1.8 m. Nyob rau hauv tib volume.

Qhov no cov ntaub ntawv uas yog lub hauv paus ntawm ntau xyoo ntawm MAAs thiab pob zeb ua compositions. Nws yog heev uas cog noob rau tso txoj kev, nrog-tshuab iav khoom thiab nyob rau hauv ua liaj ua teb.

Nyob rau hauv kev tsim kho ntawm yuav tsum muaj qhov tseem ceeb rau lub tswvyim ntawm kev ceev, uas yog tus piv ntawm cov pawg ntawm cov xuab zeb rau nws cov ntim, nws muaj ib tug kev ntsuas unit: g / cm3, kg / m3. Ntuj tej ceev ntawm cov xuab zeb yog 1300-1500 kg / m3.

Tej kev tsim kho cov ntaub ntawv, qhov no daim duab yog nce mus nce los thiab nyob ntawm tus neeg kawm ntawv uas compaction. Nws yog to taub hais tias tus nqi qub los ntawm cov khoom yuav siv sij hawm ib tug txawv npaum li cas. Ceev cov xuab zeb tsis nyob rau cov av noo thiab muaj ib yam ntawm nws variations cuam tshuam tej ceev. Thaum dua dej nplej them los ntawm ib tug txheej ntawm dej thiab raws li tus nqi ntawm cov xuab zeb nce dramatically. Uas tej ceev ntawm cov xuab zeb ntawm oscillation av noo mus rau hauv tus account thaum xam ntau npaum ntawm cov xuab zeb mus rau lub yam ntim. Yog hais tias koj tsis coj mus rau hauv tus account qhov no zoo tshaj, mortar yuav tsis muaj qhov tsim nyog muaj kev ruaj ntseg paj tau paj thiab zuag qhia tag nrho engineering design yuav substandard.

Tam sim no mas siv alluvial xuab zeb, nws extract yog yooj yim - ntxuav xuab zeb chaw txua txiag zeb. Qhov no yog ua raws li nram no: ib tug loj ntim dej hauv therefrom ntxuav av nplaum thiab hmoov av.

tsev xuab zeb ceev nyob rau hauv lub grain qauv. Piv txwv li, lub siab npaum li cas ntawm ncaj qha pov thawj ntawm qhov tseeb hais tias raws li ib feem ntawm nws cov ntom, muaj zog heev thiab txias-resistant nplej. Qhov no yog cov ntaub ntawv uas nrog ib tug high school cov coefficient yog indispensable rau hauv lub tsev nyob rau hauv permafrost tej yam kev mob. Nws yog lub hauv paus ntawm high-zog ua vaj tse, uas zoo hardiness.

Ceev ntawm quartz xuab zeb nyob rau hauv ib tug xoob lub xeev yus muaj los ntawm Performance index ntawm 1500 kg / m3, tab sis muaj peev xwm nce mus rau 1700 kg / m3. Nws yog tsiag ntawv los ntawm qhov zoo tshaj plaws tu yam ntxwv thiab yog ntxuav thiab calcined qhuav tej yam ntuj tso khoom. Thaum siv nyob rau hauv kev tsim kho kom siab tu yam ntxwv lub tsev. Cov kev ceev ntawm quartz xuab zeb - ib tug tseem ceeb heev parameter uas yog coj mus rau hauv tus account thaum lub sij hawm tsim kho.

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