full2010.pdf - page 1362

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CMC/SF:25/5 CMC/SF:20/10 CMC/SF:15/15 CMC/SF:10/20 CMC/SF:5/25
£µ¡š¸É 3 ž¦·¤µ–œÊε¤—»¨ (Equilibrium Water content) š¸ÉŸnœ¢d¨r¤µ¤µ¦™—¼—Ž´Å—oĜœÊ儨´Éœ – ‹»—¤—» ¨
«¹„¬µž¦·¤µ–œÊε¤—»¨ (Equilibrium Water Content, EWC) °ŠÂŸnœ¢d ¨r¤š¸É—¼—Ž´ Å—oĜµ¦¨³¨µ¥´¢Á¢°¦r
œÎµÂŸnœ¢d¨r¤°´˜¦µnªœ 20:10 °Š CMC:SF š¸ÉÁ˜¦¸¥¤Å—o Ş«¹„¬µ®µž¦·¤µ–œÊε¤—»¨š¸ÉŸnœ¢d¨r¤µ¤µ¦™
—¼—Ž´Å—oĜµ¦¨³¨µ¥´¢Á¢°¦r pH 3, 7, 10 ¨³ 14 ž¦· ¤µ˜¦ 100 ¤·¨¨·¨·˜¦ ˜µ¤¨Îµ—´ Áž}œÁª¨µ 72 ´ÉªÃ¤Š ¡ªnµš¸É
pH 7 ¤¸ž¦·¤µ–œÊε¤—»¨š¸ÉŸnœ¢d¨r¤µ¤µ¦™—¼—Ž´Å—o ¼Šš¸É »— Ášn µ„´ 1610.33% —ŠÄœ¦¼ žš¸É 4
pH
£µ¡š¸É 4 ž¦·¤µ–œÊε¤—»¨ (Equilibrium Water content) š¸ÉŸnœ¢d¨r¤µ¤µ¦™—¼—Ž´Å—oĜµ¦¨³¨µ¥´¢Á¢°¦r
宦´š¸É pH 3 Ÿnœ¢d¨r¤—¼—Ž´œÊεŗoœo °¥ ÁœºÉ°Š‹µ„Äœ£µª³„¦—®¤¼n‡µ¦r°„Ž·¨·„ °Š CMC ¨³ SF
¥´Š‡Š°¥¼nĜ£µ¡Á—·¤ ‹¹ŠÁ„· —¡´œ›³Å±Ã—¦Á‹œ¦³®ªn µŠ„´œÅ—o—¸ nŠŸ¨Ä®o—¹Š—¼—œÊε‹µ„£µ¥œ°„¨—¨Š ¨³Äœ£µª³
—nµŠš¸É pH 10 ®¤¼n‡µ¦r °„Ž·¨·„ °Š CMC ¨³ SF ‹³Â˜„˜´ ªÄ®oÞ¦˜¦°œÂ¨³Á„·—¦ŠŸ¨´ „Å¢¢jµ™·˜ °Š®¤¼n‡µ¦r
°„Ž·Á¨˜Áž} œŸ¨Ä®oÁ„·—„µ¦¡°Š˜´ª¤µ„ ¹Ê œ äÁ¨„»¨ °ŠœÊε¡¦nÁ oµÅ—o ¤µ„ ˜n£µ¥Ä˜o £µª³š¸É pH ¤¸‡ªµ¤Áž}œ—nµŠ¼Š
Ánœ š¸É pH 14 ‹³Á„·—„µ¦—´ Šž¦³‹»¨ °Š®¤¼n‡µ¦r °„Ž·Á¨˜ÁœºÉ°Š‹µ„ž¦³‹»ª„ Ž¹É ŠnŠŸ¨˜n°Â¦ŠŸ¨´ „¦³®ªnµŠž¦³‹»
‹¹ŠšÎµÄ®o„µ¦¡°Š˜´ª¤¸‡nµ¨—¨Š œ´Éœ‡º°ÂŸnœ¢d¨r¤µ¤µ¦™—¼—Ž´œÊεŗo¨—¨Š
«¹„¬µž¦·¤µ–œÊε¤—»¨ (Equilibrium Water Content, EWC) °ŠÂŸnœ¢d ¨r¤š¸É—¼—Ž´ Å—oĜµ¦¨³¨µ¥Á„¨º°
(1) µ¦¨³¨µ¥Á„¨º°š¸É¤¸ž¦³‹»ª„ (cation) ˜n µŠœ·—„´œ
ž¦·¤µ–œÊε¤—»¨ °ŠÂŸn œ¢d¨r¤š¸É¤¸°´˜¦µnªœ 20:10 °Š CMC:SF µ¤µ¦™—¼—Ž´Å—oĜµ¦¨³¨µ¥Á„¨º°
‡¨°Å¦—r°Š ÎÁ—¸¥¤, ‡¨ÁŽ¸ ¥¤ ¨³Á¢°¦r¦·‡ š¸É ‡ªµ¤Á o¤ oœÁšn µ„´œ —ŠÄœ¦¼žš¸É 5 ¡ªnµž¦· ¤µ–œÊε¤—»¨ °Š
Ÿnœ¢d ¨r¤¤¸‡nµ¨—¨ŠÁ¤ºÉ°¤¸ž¦³‹»ª„Á¡·É¤ ¹Êœ Ž¹ÉŠ¤¸ œªÃœo¤Áž}œ—´Šœ¸Ê Na+ > Ca 2+ > Fe3+ ÁœºÉ°Š‹µ„‡ªµ¤µ¤µ¦™Äœ„µ¦
% EWC
% EWC