Norma ASTM D665 y D974

 

Prknfcfjäl KIPBJ^LIPBU1 CRKU EB@BÜF, LCBX JL_KCLIBU, JL_KCLIBU, ]B@^F PF^^BU, ]LNCF DFIPB^F EKECF1 IF_BIF

 

LUPD @??2

Dëtf`f `b prubnl bstìi`lr plrl cls elrletbräsels elrletbräs els `b prbvbiekõi `b ` b cl •

fxk`lekõi lebktb dkibrlc kihknk`f bi prbsbiekl `bc `b ljul

 

Lcelieb   Bstb dëtf`f `b prubnl eunrb cl bvlculekõi `b cl elplek`l` `b cfs lebktbs kihknk`fs, cfs lebktbs `b turnkils `bdkibrlcbs vlpfr, plrl lyu`lr plreuclrdbitb l prbvbikr cl fxk`lekõi `b cls plrtbs obrrfsls sk bc ljul sb dbzecl efi bc lebktb. Bstb dëtf`f `b prubnl tldnkëi sb uckzl plrl prfnlr ftrfs lebktbs, efdf lebktbs hk`rìuckefs y lebktbs ekreuclitbs. Bi bc prfeb`kdkbitf sb bstlncbebi `kspfskekfibs plrl lilckzlr uk`fs dìs pbsl`fs qub bc ljul.

 

]rfeb`kdkbitf `b prubnl   Ril dbzecl `b 5== dC `bc lebktb bi prubnl sb ljktl efi 5= dC `b ljul `bscl`l f ljul `b dlr skitëel, sbjñi sbl ibebslrkf, l uil tbdpbrlturl `b ?= ½ E ¼ < ½ E efi uil vlrkccl `b prubnl `b lebrf ekcäi`rkel efdpcbtldbitb sudbrjk`l bi bccl. Ub rbefdkbi`l babeutlr cl prubnl `urlitb 0 h7 ski bdnlrjf, bc pbräf`f `b prubnl pub`b, l `kserbekõi `b cls plrtbs efitrltlitbs, sbr pfr ui pbräf`f dìs efrtf f dìs clrjf. Ub fnsbrvl cl vlrkccl `b prubnl plrl `btbetlr skjifs `b fxk`lekõi y, sk sb `bsbl, jrl`f `b fxk`lekõi.

 

Bqukpf

  Bqukpf `b eclskelekõi `b kdìjbibs `b `btbeekõi `kjktlc (Ob@@K)1 Ob@@K bs bc prkdbr kistrudbitf `b prubnl vksulc efi pftbiekl õpel `b lctl tbeifcfjäl qub ouiekfil efi uil õpel sfsel`l, qub olekcktl y dbafrl cl eclskelekõi vksulc `b cfs dëtf`fs LUPD @??2

 

^bletkvfs y dltbrklcbs1   ]urbzl `b cfs rblevfs1 cfs quädkefs `b jrl`f rblevf `bnbi sbr uckzl`fs bi tf`ls cls prubnls. L dbifs qub sb ki`kqub cf efitrlrkf.   ]urbzl `bc ljul1 Bc ljul "rblevf" efdf sb `bib `bnb efitlr efi tf`f cf qub `keb sbjñi bc pf KK `b cl bspbekelekõi LUPD @