Lub zog qib ntawm pob zeb txiav txim siab li cas?

Standard Compressive Strength of Concrete Cubes (tseem hu ua lub voos xwmfab compressive zog tus qauv tus nqi) yog hais txog lub zog compressive tus nqi, denoted li fcu, k, uas muaj kev ntseeg siab ntawm tsis pub tsawg tshaj 95% nyob rau hauv tag nrho kev faib ntawm compressive zog ntsuas los ntawm tus qauv. kev sim cov qauv ntawm lub voos kheej kheej nrog ib sab ntev ntawm 150mm, tswj thiab kho los ntawm cov txheej txheem, thaum muaj hnub nyoog 28 hnub.

Cov qib pob zeb ua kom muaj zog yog cais raws li lub voos xwmfab compressive tus qauv lub zog, siv lub cim "C" ua raws li lub voos xwmfab compressive zog tus nqi (hauv MPa). Ordinary pob zeb tau muab faib ua C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, thiab C80, tag nrho 14 qib.

Lub zog compressive ntawm pob zeb yog hais txog qhov kev ntxhov siab tshaj plaws uas nws cov qauv qauv tuaj yeem tiv taus nyob rau hauv siab kom txog thaum tsis ua haujlwm. Nws feem ntau yog siv los ua qhov taw qhia los ntsuas qhov zoo ntawm pob zeb thiab ua lub hauv paus rau kev txiav txim siab qib zog.

Cube Compressive zog (fcu)

Lub voos xwmfab nrog ib sab ntev ntawm 150 hli yog tsim raws li cov txheej txheem ntau lawm thiab kho raws li tus qauv (kub ntawm 20 ± 3 degree thiab txheeb ze av noo tshaj 90%) mus txog rau hnub nyoog 28 hnub. Lawv lub zog compressive yog ntsuas los ntawm cov qauv txheej txheem thiab raug xa mus rau "Concrete Cube Compressive Strength" (abbreviated li "Cube Compressive Strength" thiab sawv cev ua fcu hauv MPa).

Standard Cube Compressive Strength

Qhov no yog tus nqi txiav txim siab los ntawm cov qauv kev ntsuas ntawm cov qauv ntsuas nrog ib sab ntev ntawm 150mm, tswj thiab kho los ntawm cov qauv txheej txheem, thaum muaj hnub nyoog 28 hnub. Qhov feem pua ​​​​ntawm qhov muaj zog hauv qab no tus nqi tsis tshaj 5% (piv txwv li, nws muaj 95% kev ntseeg siab ntawm compressive zog), thiab nws ntsuas hauv N / mm² lossis MPa.

Qib Strength (Qib Zog)

Cov qib pob zeb ua kom muaj zog yog txiav txim siab raws li tus qauv lub voos xwmfab compressive zog tus nqi. Nws yog denoted los ntawm tsab ntawv "C" ua raws li lub voos xwmfab compressive zog tus qauv tus nqi, piv txwv li, "C30" qhia ib tug pob zeb ua pob zeb compressive zog tus qauv nqi fcu, k=30 MPa.

Raws li tus qauv tam sim no (GB50010-2010) hauv Suav teb, cov pob zeb zoo tib yam tau muab faib ua cov qib hauv qab no raws li lub voos xwmfab compressive zog tus qauv: C7.5, C10, C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, thiab C80, tag nrho 16 qib zog. Lub voos xwmfab lub zog> qib zog

Tswv yim tseem ceeb ntawm cov pob zeb muaj zog qib

C7.5 txog C15: Siv rau padding txheej, lub hauv paus, pem teb, thiab cov qauv uas muaj kev ntxhov siab tsawg;

C15 mus rau C25: Siv rau hauv cov pob zeb zoo tib yam xws li kab teeb, slabs, kab, ntaiv, thiab lub ru tsev trusses;

C25 rau C30: Siv rau hauv cov qauv uas yuav tsum tau ua kom muaj zog, cov qauv loj loj, thiab cov khoom siv ua ntej;

C30 thiab saum toj no: Siv nyob rau hauv prestressed reinforced pob zeb lug, crane nqaj, thiab tshwj xeeb Cheebtsam.