Qib ntawm qhob lub zog: hom, yam ntxwv. Qib ntawm qhob lub zog - GOST

Lub tswvyim ntawm "pob zeb ua hauv chav kawm ntawv" twb qhia nyob rau hauv 1986. Qhov no xam txiav txim ib tug yam ntxwv ntawm cov khoom, raws li nws yog tus txheem zog. Txawm li cas los, nws muaj ua ntej lub tswvyim ntawm lub hom pub GOST26633-91 kom deb li deb.

Yuav ua li cas yog lub hom

Hom qhob -. Compressive zog ntsuas los ntawm cov tshuaj nrog ib tug ntug ntev ntawm 15 cm ua ntej thaum pib ntawm lub xeem lawv solidify hauv 28 hnub nyob rau hauv ambient tej yam kev mob. Thaum pouring qhob ntsuas bayonet yuav tsum tau tshem tawm cov huab cua bubbles. Cov qhabnias ntawm compressive zog yog npawv down. Designated hom ntawm tsab ntawv "M". Tom ntej no yog ib daim duab uas qhia ib lub voos xwmfab lub zog kgf / cm ^2. Tej zaum, es tsis txhob noj ntsuas lub tog raj kheej txoj kab uas hla ntawm 15 cm thiab ib qhov siab ntawm 30 cm. GOSTS pub lwm tus qauv ntau thiab tsawg pab. Thaum qhob chav kawm ntawv qhia qhov tsawg kawg nkaus zog qhia (nrog rau ib tug ua tau yuam kev ntawm 13,5%), stamp qhia tau hais tias qhov nruab nrab.

Yuav ua li cas hom ntawm qhob pom lub dag lub zog

Tam sim no, cov hom los ntawm cov M50 mus rau lub M1000. Lub tsev yog feem ntau siv cov ntaub ntawv uas M100-M350. Nyob rau hauv tus neeg lub tsev-tsev yog pom tias yuav ua tau lub feem ntau nrov M300.

Qhov ntawd yog txoj kev yuav siv tau ntau hom kev ua vaj tse zog:

• M100 tsis yog tshwj xeeb robust, yog siv tsuas yog rau cov kev npaj ntawm qho to rau lub hauv paus pheej ua dej txeej. Tej zaum nws yog siv raws li ib tug phau ntawv rau tso kerbstones.
• M150 muaj peev xwm yuav siv tau rau hauv pem teb screeds, pouring driveways thiab pouring ntawm cov me nyuam yaus rau cov me vaj tse.
• M200 yog siv nyob rau hauv kev tsim kho ntawm cov pawg thiab hauv av nyob rau hauv lub tsev kab xev. Thiab siv nws rau qhov siv thiab ua staircases thiab taug thiab platforms.
• M250 yog siv rau cov ntaus ntawv ntau txhim khu kev qha hauv av nyob rau hauv lub tsev.
• M300 - raws li twb tau hais, feem ntau siv qib kev ua vaj tse. Siv rau pouring cov me nyuam yaus, slab plag tsev, erection ntawm ntseej.
• M350. Siv rau pouring monolithic phab ntsa, beams, txhua thiab slabs. Cov tib qib zoo suited rau qhov kev siv ntawm lub tais basins. Nws yog vim tej qhob no yog ua los rau lub tshav dav hlau sawb.
• Ntawm M400 hom pob zeb ua manufactured choj, bank safes thiab t. D. Nyob rau hauv cov tsev nyob siv tej khoom no yog tsis siv vim lub high nqi.
• M450-500 kuj siv nyob rau hauv kev tsim kho ntawm cov txuas hniav, dams, ntau, dams.

qhob chav kawm

Qhob chav kawm ntawv - ib tug ntau yog qhia. Nws yog xaiv los ntawm tsab ntawv "B". Tus naj npawb qhia tau hais tias lub siab tom qab nws, uas muaj peev xwm withstand khoom nyob rau hauv MPa, mus txog rau 95%. Tag nrho cov ntau yam siv nyob rau hauv kev lag luam thiab kev tsim kho cov chav kawm 3.5-80 qhob. Tom ntej no, peb qhia rau koj paub ib tug lub rooj me me ntawm xov xwm ntawm cov feem ntau nrov kawm thiab qib:

Los ntawm tej yam tej zaum yuav yog nyob ntawm seb cov ntaub ntawv uas lub zog

Zog chav thiab qib kev ua vaj tse tej zaum yuav yog nyob ntawm seb ntau yam. Qhov zoo tshaj ntawm cov sib tov yog los ntawm sib txawv tsis. Ua ntej ntawm tag nrho nws yog, ntawm chav kawm, cov kev faib ua feem ntawm MAAs thiab muab tub lim. Qhov loj ntawm cov thawj thiab tsawg tshaj li tus thib ob, cov muaj muaj zog tau drenched khoom. Raws li ib tug tub lim nyob rau hauv ob lub private thiab muaj kev tsim kho yog kheev siv cov xuab zeb. Qhob zog nyob nrog rau nws tus yam ntxwv. Lub finer lub excipient, qhov ntau nws yog li hauv qab no. Ntawm cov hoob kawm, nyob rau hauv lub dag lub zog ntawm lub pob zeb ua muaj feem xyuam rau lub hom ntawm cement. Yam tseem ceeb uas tej zaum yuav ua rau ib tug txo nyob rau hauv pob zeb ua zoo, yuav ua tau:

• nyob rau hauv lub xub ntiag ntawm ib tug sib tov ntawm cov organic impurities;
• lub xub ntiag ntawm hmoov av Cheebtsam;
• av nplaum impurities.

Nyob rau hauv tas li ntawd, lub zog ntawm cov tshuaj nyob rau tus nqi ntawm cov dej ntxiv rau nws. Tshaj nws me me, ntau dua qhov lub load nyob rau hauv lub tom ntej tsim muaj peev xwm zam. Qhov no yog hais tias qhov tshaj dej ua rau yus lub tsim nyob rau hauv lub pob zeb ntawm ib tug loj tus naj npawb ntawm pores. Cov npuas thiab txo nws lub zog.

Qhov zoo tshaj yuav influencing lub peev xwm ntawm cov pob zeb ua rau withstand compression thiab expansion yog cov neeg kawm ntawv ntawm homogeneity ntawm sib tov. Cov feem ntau robust tsim yog tau yog hais tias tus tov yog npaj siv tshwj xeeb cov khoom. Nyob rau hauv lub private lub tsev lub tsev kneading yog feem ntau yog ua nyob rau hauv ib tug me me MAAs tov khoom. Lub zog ntawm lub pob zeb ua qauv kuj tau nce vibropressing nteg mix.

Lub tensile lub zog ntawm qhob nyob rau hauv nro

Qhov ratio ntawm cov hom kev ua vaj tse thiab lub dag lub zog - yog, raws li hais saum toj no, muaj peev xwm ntawm lub voos xwmfab lub ntsej muag nrog ib tug 15 cm mas compressive load, qhia nyob rau hauv kgf / cm ^2. Lub fact tias cov duab nyob rau hauv kev tsim kho ntawm lub tseem ceeb tshaj plaws. Tom qab pob zeb ua lug feem ntau dais tej load los ntawm saum toj no. Piv txwv yog lub nqaws masonry phab ntsa, tug ncej thiab cov me nyuam yaus siv, kev txhawb txhua, thiab hais txog. D. Txawm li cas los, tej zaum nws yog tsim nyog los paub qhov tensile lub zog ntawm qhob thiab lub tensile. Piv txwv li, nyob rau hauv kev tsim kho ntawm tso tsheb hlau luam, silos los yog lub pas dej. Qhov no xam yog hais tias ntawm qhob no feem ntau yog tsis heev. Qhov no cov ntaub ntawv uas yog tawg yooj yim heev. Uas yog vim li cas tej zaum thaum lub sij hawm lub caij nplooj ntoos hlav heaving tawg cov me nyuam yaus thiab cov phab ntsa, raws li lub siab rau lawv los ntawm lub hauv qab thiab sab tusyees. Ua kom lub dag lub zog ntawm cov expansion qhov cuab lub zog. Tensile zog yog tib yam extension nyob rau hauv txhua qib kev ua vaj tse thiab yog 15 kg / cm ² nyob rau ib tus nqi ndlwg ntawm MAAs 300 kg / ^m3.

Yuav ua li cas xaiv ib tug qhob hom

Nyob rau hauv kos tag nrho cov Cheebtsam lug yuav tsum tau muab qhov kev tsim nyog qib ntawm qhob lub zog. GOST thiab SNIP - qhov no yog dab tsi koj xav tau los coj cov kev xaiv. Ntawm cov hoob kawm, nyob rau hauv nws tus kheej-kev tsim kho tsim nyog los mus txiav txim precisely nyob rau hauv ib tug cov ntaub ntawv los yog lwm hom kev ua vaj tse yog heev problematic. Ib tug zoo txoj kev tawm ntawm qhov teeb meem no yuav los ua ib tug kev sib tham nrog ib tug tshwj xeeb. Txawm li cas los, masters yog pob zeb uas ua lug rau lawv tus kheej, nyob rau hauv peb lub teb chaws txaus. Yog li ntawd, cov nqe lus nug ntawm yuav ua li cas sib tov txoj cai muab, nyob rau hauv Feem ntau, ib tug teeb meem yog tsis suav hais tias. Piv txwv li, rau erection lub hauv paus av nrog zoo kabmob muaj peev xwm nyob rau hauv ib tug ca feem ntawm cov tshuaj yog feem ntau yog siv xis mas M400, dej xuab zeb thiab rubble sieved nyob rau hauv ib qho ratio 1h3h5. Thaum txog lub tib proportions ua kneading siv es tsis txhob ntawm gravel pob zeb chaw txua txiag zeb.

Lub tsev yuav siv tau ib tug ntau yam ntawm hom ntawm qhob lub zog. Xaiv lub cai - txhais tau tias los xyuas kom meej tshaj plaws cia siab rau thiab durability ua los ntawm tsim. Qhov ratio ntawm MAAs / xuab zeb yuav tsum tau mus nrhiav tau ib tug lub npe ntawm cov pob zeb, yuav muaj nyob rau hauv tshwj xeeb ntxhuav. Yuav kom nrhiav tau lawv tsis yog yooj yim, cov ntaub ntawv nyob rau hauv net ib tug ntau.