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.
