2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Qhov kev sim no yog siv los txiav txim siab cov duab ntawm cov khoom sib sau thiab txhua daim duab uas yog nyiam nyob rau hauv cov xwm txheej tshwj xeeb. Qhov tseem ceeb ntawm flakiness & elongation Performance index yog raws li nram no; … Vim rau thaj tsam siab rau qhov ntim qhov sib piv, cov flaky thiab elongated particles txo qis kev ua haujlwm ntawm cov pob zeb sib tov.
Vim li cas flakiness thiab elongation Performance index xeem tiav?
Kev Ntsuas Qhov Ntsuas thiab Qhov Ntsuas Qhov Ntsuas yog qhov kev ntsuas tseem ceeb heev uas yuav tsum tau ua ntawm kev sib sau hauv chav kuaj. Qhov kev sim no muab qhov feem pua ntawm flaky thiab elongate aggregate tam sim no nyob rau hauv tag nrho cov qauv.
Kev ntsuas flakes thiab elongation yog dab tsi?
Flakiness Index yog feem pua ntawm qhov hnyav ntawm cov khoom hauv nws, uas nws qhov tsawg kawg nkaus (piv txwv li thickness) tsawg dua peb feem tsib ntawm nws qhov loj me. Elongation Index yog feem pua ntawm qhov hnyav ntawm cov khoom hauv nws, nws qhov loj tshaj plaws (piv txwv li qhov ntev) ntau dua ib thiab plaub feem tsib npaug ntawm qhov ntsuas qhov ntev.
Lub hom phiaj ntawm kev ua cov qauv kev sib sau ua ke yog dab tsi?
Qhov kev ntsuas ntawm qhov kev xeem no yog muab cov kev sim rau kev txiav txim siab qhov ntsuas qhov ntsuas ntawm qhov sib xyaw ntxhib. Ib qho kev sib sau tau muab cais ua cov flaky yog tias nws muaj qhov tuab (qhov me me) tsawg dua 0.6 ntawm nws qhov loj me me.
Lub hom phiaj ntawm kev paub qhov ntsuas qhov ntev yog dab tsi?
AIM OF THE EXPERIMENT: Kom txiav txim siab qhov ntsuas qhov ntsuas ntawm cov qauv muab ntawmchav kawm aggregate. ASTM 4791-10: Standard Test Method for Flat Particles, Elongated Particles lossis Flat Elongated Particles hauv Coarse Aggregates, American Society for Testing and Materials.
Pom zoo:
Yuav ua kom tiav lossis ua tiav?
Yog li ntawd, ib yam tiav, lossis qee yam tau ua tiav lossis ua tiav. Yog li ntawd, Action Item A yog tiav (adjective), lossis Action Item A tau ua tiav (piv txwv li cov lus qhia dhau los). Yam Ua Haujlwm A "ua tiav" yog qhov tsis raug, txawm hais tias "
Thaum siv vim li cas thiab yog vim li cas?
Vim li cas thiab qhov twg ntawm qee yam yog vim li cas rau nws. Txawm tias cov thawj coj ua tiav yuav tsum tau nug txog vim li cas thiab yog li ntawd ntawm lawv qhov kev ua. Nws tsis txaus siab tham txog vim li cas thiab yog li ntawd nws lub sijhawm nyob txawv teb chaws.
Puas ua tsis tiav txhais tau tias ua tsis tiav?
ua tsis tiav ntawm qhov ua tau zoo lossis ua tiav: Nws ua tsis tiav nws txoj haujlwm. (ntawm qee qhov kev xav tau lossis ib txwm muaj peev txheej) ua pov thawj tias tsis siv lossis pab: Nws cov phooj ywg ua tsis tau nws. Cov lus ua tsis tau nws.
Cov khoom xyaw twg ua rau muaj txiaj ntsig thiab ntxiv kev nplua nuj thiab flakiness?
Eggs yog siv los ua ib tus neeg sawv cev leavening agent Cov tshuaj leavens yog cov khoom sib xyaw lossis cov khoom sib xyaw uas tso tawm cov pa roj thaum lawv hnov qab, nrog noo noo, los yog nrog cua sov. … Tshuaj lom neeg yog siv rau hauv cov qhob cij ceev thiab ncuav qab zib, nrog rau cov ncuav qab zib thiab ntau lwm yam kev siv uas qhov kev siv tshuaj lom neeg ntev ntev tsis siv tau lossis tsis xav tau.
Yuav ua li cas xam elongation thaum so?
Elongation=ɛ=(ΔL/L) x 100 Elongation ntawm Break yog ntsuas hauv % (% ntawm elongation vs. thawj qhov loj me thaum tawg tshwm sim). Qhov siab tshaj plaws elongation piv txwv li, thaum so, emax tseem hu ua "strain to failure". Qhov kawg elongation qhov tseem ceeb ntawm ob peb puas feem pua yog ib qho rau elastomers thiab zaj duab xis / ntim polyolefins.
