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F.FJ."'R<~T <>F REVIBRATl<>N <>N 'fHE <'C>MPRESSIVE STREN<~TH

<>Ji' <~<>N<'RETE DlJRIN<; Sl~:TTINN TRRTRILUXANA

Lecturer

Department ••f (~ivil Rnginet-ring

King Mongkut' s Institute of Techn••l••gy Th••nlluri

Bangm(td, Rasl>urana, Ba11gk,•k 10140

•

·L'9lt1n·1~1Jfit16ltrleill'lfl autl~~a~·l uLL uuLLa~n·1frl'lrl~LL tluLLa~J >Tft-a~~1lJ 1i.il ~fl Dut1.i011~~1.1 tr l 'l fl 'l~YI, Jfl'i~L;; rl\J~'Ufl·)· 1fl tl\Jfl~Ol,f \J~~ll~~Gi1 LL~~)· J l>JL tlu~~~ LLffl r1·11Nu*1fl fl\Jfl~01 l,jor1·)1L tl\J

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27

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L iJ~tllJL llfJUn1'1~ aVl?J tl-3'1 '1lJfl¥i01lflm-iun1"l~tJ?h nun1a'3 rlVl?J i}~f') ll\JO~Vl~~i'un·11t1vi LL U\JVl'llJ v • v

, If l Gl a 01')151tJ7J r)~ 1J·1 Gl tltJtJ:nl)J\J ~"lJ a~ ol1 t) r.j· ·~)j fi·11L tl1'\ll n (). 6 () fl~ 0. 90 1vi fJ L ~)Jam 1·1a· J lJ \j "

\"l ~;~ ~:: 0.1 <> fl rl'Ufl~~l~li 1n·11Nuszl1~~ 1"1-jutr11iui11virJ Lfl~tl~iua~L ~u\JLL uu 1i::1~u11a· 1 30 (it> •

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v ·) fl \JU 'YI I fl l".i • " UJ QJ ..... ..,

'Yl(tltlr111tr1o~r1vinrrtfl 7 14 lLil~ 28 1l' ..

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l"li·1'l l11illll tl\JVl'flfJ ~ tlfl rl'U fl~GllLGlfla1 f L V.iJ QJ (°' CV Q.I " f

i-1 l ':i11 1fr1 n~ r.> (tl1J r>~ .-1 rJlA fl ':i m

SlJMMARY

It is 11CI icvc(I t hal l'()llc..:rclc is n<ll •ti l<>Wl~(.I l<l l1C lli s1 lt rlJC(I a ftcr i I is pl •tt.:cll <ltlll c< 1111p~1t:tc(.l ( ,r

vit)ratc(.l. 111 f(ll'.t, the ltsc (lf revillr~1ti11g tct:h11itlllc is Jl<JI h1rm1fl1l l<J l'.(lntrctc. Actt1•1lly,

rcvil)r:ttillll will i11t.:.rcasc the C<llllprcssivc strength <>f c<>11crclc. 'l'c> invcl"tigL1tc the cffcl'.f <lf •

rcvil)raticJtl, lhc rcscar<.:h is cr11ph~tsi1..c<l (lll the slt1<ly c>f the <.:<lr11prcssivc slrc11gth <,f <:<,tlcrctc

Slll"ljCl' lCll tel rcviflT<llitlll <.Jt1ri11g the SCtti11g lilllC l>Cfic>tl. ( 'cJlllprcssiVC SITCllgth llf fCVillfalccJ

t' t)J1c..: rt~lc w~1s L·<lrtl(l<lrcl t:<Jncrclc whit:h was vibr<tlctl <Jnly l>11c ti111c. W:1ter-· t:c111c11t

ratil> llf lhc t:<>lll'TCtc was varied fr<1n1 0.60 1<l 0.90 with <tn inl'.rcrr1cnl <>f 0.10. J)t1ri11g the sct1i11g

1i111c 11cric>(.I, the rcvibratctl L'<>11<.:rctc w:L"i vil1r<l1cll ''g~i11 ~tl 30, 60, 90, 120, 240 ~u1<l 360

111i11t1tcs ( 6 h1Jt1rs) •lflcr 111ixing the t'.l>ltt:rctc. 'l'hc c<,111prcssive strc11gth <lf rcvil1r<1tctl c<llll'.fctc

w;1s tcslctJ <It tl1c ilgc <>f 7, 14, a.11cl 28 c.lays.

' l'hc rcsl1l1s sl1l1W th:tl. rcvit1rati11g lcl·h11ic.(lle c.lt1ring the sctli11g li111c pcric1cl is 11cll h:tr111ful re.,

t 'tl11crclc l111t i1icrt~ascs the t'l.l1111•rcssivc strt.~••~ltl. l 'ltt~ 111:lxir11t1111 incrc<L~i1ig c.,f lhc strc11gth (lCl'Ltrs

tlt1ri11g 90 t<, 1 20 111il1t1tcs ilftcr 111ixi11g lhc C.:.l>11t·rctc. With the higher w;1tcr- c..·c111c11t rali<>,

the i1u:. rc1tsi11g l>f the l'<11·1crctc strc11gth is higl1er tha.11 t.hc <•11c with ll>Wcr w1ttcr- cc111c11t r;.1til>.

·1·11c avcr<lgc i11<:rc;,1si11v. c1f the t'llt111•ressivc stre1tgtt1 c.Jf cc.ln<.:rcte lly rcvil1r11tillll is alx>lll 10% lc.1 15%

t ·i>tllJl<lfC(I f(• ll1c l '<1111r(1) <.· c111crclt~.

28

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fl1'lUaau'l ifl vU O~VILL~~~1 l tf~'\JO')~n~o~11a1 l t1nl'lflv~LLUU •

Vltl\J n~m'l Utf1~l 1illflflv'UO~Olrivol'1 '1~li11 ~fltlUO~Ol tivULLfla'3

Yl1llick 111 l~f1nl:t1n.:Jr.Ja11v~n1'jiuiil~u·liviaun~vi~iJfl11i.Jqu (SIL11111}) 3 rl'1 flflUn~m~~ l1lJ~ liitJnl'>tl~ LL iiu 1~u"ltf'1fl~u~iu11 uu\1'1\jJJ?Ju1~ 1 ii'1 fl vun"im;iliiiuJi'>~ ltf'1fl~v~iuli1n1"> •

t .J' ti t tf I 11...J au 40 i\.11~ a1UfltlU0~01J1auin~~1i~Ufl1'latJfli~LL'lO 20 iul~ LLa~lilO'l'laUinl'IL1alOi-1'31 iJn ' " . ., ~

V l>l lick 'WU11fl1'lauczhl\'ll t-1n ·1a~ ij'Vllf tl~~ltli.tfl ~GlJJflll f4111iU'1lflL~ lJ L~tJL\latJf il Fla~ "" ... 20 1'U ll'l

13. 7 L1a:::r11'lntiwlflf~~~li1a (l<'i11i1l Sctti11g ·1·in1c) 1Jrl~fluun~01L~J.JiuLNnuvtJ 1~r1i111,1 ~1 tl'U rl~01~1~~'Jn·1'l~t.t?i'·1~~jj~1ti1a~ tl'Vla~~u'l ui1~ri1r1~u 1 lmut'1V4·1~utl·1~ri~"1'H-rufl aun~01~ilfi 1 v • ., fl'l'lfl"lfJlll (Jllcc-<li11g) ~~1 (2]

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J\ 11< >\.v a1 ji, I Jarwi '' LL~:: f )<111al1cy 13 I 1~fl fll-fliJat11~l1lJ?t u~ fll'lauw1oi tlfl1U ~'HU'J-3 ( R<>tttl

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- tjtJWLlJ\J ~ti u{fl Lla\J ~ tl'l~LJ)'1~ 1 i1t11n1"lri t>Gl1 fl{~LL 'lO (Initial Setting '('i111c) L Ylln \J 2

illiJ~ LLa~n1"jriui1fli~'!vin1v (l"inal Setting ·1·in1c) Lfi1nu 3 ~11>J~ 30 u1'1 i~l'lviavu011iJ lJ'lOl 'ljl\J AS'fM C .. - 1 91 [ 5 J

., - ll"iltJ L~tJnnu11>Ju1)jt11 LiJv.ciafl11lJa~1au61 (fineness Ml>du1us) 1'11nu 3.0

" - \;tJLuoi' 2 )jfi1 l>.1V1aafl11iJa~LiifJ~1l'i1nu 1 .37

" .,J ~ .. 'f"" .,J ~ ... 'i"' ..., 'l ... l ""

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30

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flrl'Ufl~Vl.lliLLU\J '110Ut.1Urivui1vrl1-ili'1\Jn"j:;tl~LLfia:;Gi'1vd1~-jjiJ1fJ 30 60 90 120 240 LLa:: ' .... ( ~ 1 .., ,J ... ., .J ~ - "' ti1 ..J ~ .... ..

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~lil'Uft~vit11~i'ut1·1,~t.1'51i10L-lcr1 15 iu1ii '1:=,;1n1"jftflavun1ct'~ri'flL~vflv\Jn~01ila1u 7 t 4 '

LL~~ :l8 ·j'uori>J~-.~u a1utiriun~m~ci'\.lii~1t1L1a1 60 iu1n-.i::flflavuL11\'i1::~r:r1fJ 28 iuLYi1tfu •

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33

111\'f11 nt.1. iJ~ 16 nutJ~2 1itJ11fllJ 2536

. .. °" • I ., .. ....

L 1.R1 ff 'U'lfJ ''t1J.fl1L6_Q.1.Y1H

J ,,.J .., ., ti • ., ., .... ., 4'ot ..J .., -"

"j\ YI 4 LLa~~fl11llall'W'Ufi1Jil~Ol~~tJ6l'tttl"1flilUO"jOl0\JtllU'tttl~flilUO'iOlYI 28 1\J LLa::LJ.JiJL1fll ~ .

1J u~ fl l~~uczi'.1L ~JJ~l n 15 iu1\i LUU 60 i Uln 'W ui1n1'1'~ rj' ~ ~L ~JJ~\J ltltl L\l~tJU"itlllNi' DU a:: 16

l1'ir1L ~JJ~Ul'WfJ~L~OU BlllDilL tfirJUlntJunun111?f'L1altlil~f11·4i~Uaiil\'ilrl\J 15 iu1ii LLa::L1crl~L'HJJl::

.. t' t .. I e '"' n. •• , .. .., ... .,., ., I .., • .... c'll .... 4

'lflL n 'lfl\J 15 'l\Jl\'l 1JilO'l10\JtJ~JJ?Jil'1~LnOl~1tJ11 n11aU'lflflBUfl,OlLlJilL1f;l1 360 Ul\'l 'H"iB 6

i-Jli.i~ liil~L ut.1r!u0111uoitiflvt.1n101 L-wn::floun;01ffi~J~iJfi1n1cr~rrvi~a~ni1flnun;01ffiJJ1~ii1n11 " .. ' .. I " ., ~

au?f • ~~ u u ~~L \\ui1n1'lctui1 lJJ'lil L lJ'U auoi ntJ ti B

.• ' I l ' .., ~ .., . " "' .... :: .... ..J • ., ' ~l tl\lf l·j~ll9ll ')till'> ~LLOlOfl\JL 'WJ.Jf,l'l'lUflla~ vfltJil~flil\lfl'lil L'Wllt\l~UUll'UUflilUO'l~\'llll~~Oil

'11°·1~ tl[j~~ liju1'1:;LnV1flllJJLatJ'HltJLL,j'i14iJ::ij10LLriu~1u l ti- ).Jl ElUOl~ ilVIL1al " "

REV\BATlNG TlME - 60 SECOND

- . 450 0 111 .Y. .........

oW/C = 0.6 C/l 400 >-<( a OJ

350 c" t- +W/C = 0 .7 <(

I 300 t-

(.!) z w Ct'. t- 250 oW/C = 0.8 (/)

w > -(/) 200 6W/C = 0.9 VI w Ct'. n. I: 0 0

150

0 200 400

TIME AFTER CASTING (MINUTES)

34

. ~'"' "" .I .... 1l'lffl'i ff~. '6. 1Jl116 il'lJUV12 1'l..t11f)1J 2.536

~llflil~'lU~il tl£i'l~'H·i·1~ 6() n~ 90 U lfl.flltt'Hi~'11fle.J'1>Jfltl\Jfl1fl VllO l1fflttU0;9'~jjf)1 w /c; a~ 1 ~ v

' " 0 4' .., ..J ~ cf ..,. • ..r ..J ..J 0 ·/, :' ...: cf .. ... "'l "l.l'l iltJa~11 rl~t' lf.i~ rl\1'1lll 'W>J?l\J'1~JJflliJ1n11u Lla~l1a·ll1L'Hlfl~'111't1iJ~'n·•n·1'lauczr1v~LY4>JtJU~1Bfl tJ au u v

I ~ ,. IV ..i

"lf J~ 9·0 Cl~ 12C> lA lll.fllfJ'Hit-1'1100.1'l~aiJ~lPl\JO'lfil

~ QI

Ln fl 1..1 f.l tJ

"' "' f)'l')flli~Ufli~ilcl1L'iva~1~ lim1tt~OL'W11t flW'W'iirJ LllJ'lLU[J>J flwan; i'flililli'tJ LLa~f.lW ' . . . . . frn&{auti lt·11Yi'>J v1nJ11flitnifl)fl'l'lJJlrJti·1 ari1uuL't1fl 1u 1~il'W1tvtlJJLn"1Huu1 ~l~LafJaa~ • • • r1cr1L vJvLm,uiJ~1 t1rl1~ 91aciv.'1u'11n11't1v.aauf1'1 ud1~~1uf111isamffl'Htvuvun1'lli1i~t1fl~-1if '11~ rS . " ,. ~ ' ,J ..r.,

L 11 ,, u VJ r1~11 r111 illJfl tu rJrJ·1~ a~ 2J1 w '1U ft1 a . "

1 • V <)I I it·k, l ·.A., l~flccts <lf Rcvibrat i11g < '<l11crctc, .Jllt1r1l,tl {>f th~ At1•cric4Ul. ('<)l\Ccc.tc l11stitulc., Nt ).

54 ·· :i9, 721-732, March, 1958

2. M'1ttis<l11, l~.N., l.>claycd Scrccdi11g <,f (,<>11crctc, ('t>tl~tru~ti<>nal Review, N<•. 7, pp. 30, JL1ly,

1959.

35

~..I " ..I " 111lfl1 lf'1.1. uYI 16 g'U'lJYl2 1i~11f)lJ 2536

3. Alt(lwaiji, W.A.K., Darwin D., and IJ<>nahey R.C., Bond of Reinforcement to Revibrated

< ,<>ncrelc, Jo.umal.Qf . .the American C.Qncn:te Institute, No.83-94, 1035- t 042, Nov.-Dec.,

t 986.

4. ll;1vis, R.I~., Brt>wr1, [~.II., and Kelly, J.W., Sc>n1c r~act<,rs Influencing the ll<>nd Between

( 'llltl·rclc iu1rQ"':Cedings .. AS.'.lM, V. 38, Part 2, Jlp. 394-406, 1 938.

5. AS'J'M <·- 191, 'J'csl Mctht>cl f<>r 'I'irnc <Jf Selling of llydraulic (,cmcnt hy Vi<.:,lt Needle,

Armt1tll (Jl1<,k l>f AS'l'M .. Stand.ards, Vol. 04.01, t 990.

36

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