An Experimental Study on Mechanical Properties ... - Ijltet

International Journal of Latest Trends in Engineering and Technology (IJLTET)

ISSN: 2278-621X

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'HYL3UDVDG M.E., Department Of Civil Engineering, S.V.P.Engineering College, A.U Visakhapatnam, Andhra Pradesh, India

*71DLGX Ph.D, Associate professor Department Of Civil Engineering, S.V.P.Engineering College, A.U Visakhapatnam, Andhra Pradesh, India $EVWUDFW &RQYHQWLRQDO FRQFUHWH WHQGV WR SUHVHQW D SUREOHP ZLWK UHJDUG WR DGHTXDWH FRQVROLGDWLRQ LQ WKLQ VHFWLRQV RU DUHDVRIFRQJHVWHGUHLQIRUFHPHQWZKLFKOHDGVWRDODUJHYROXPHRIHQWUDSSHGDLUYRLGVDQGFRPSURPLVHVWKHVWUHQJWKDQG GXUDELOLW\RIWKHFRQFUHWH6HOIFRPSDFWLQJFRQFUHWH6&& FDQHOLPLQDWHWKHSUREOHPVLQFHLWZDVGHVLJQHGWRFRQVROLGDWH XQGHULWVRZQPDVV1RUPDOFRQFUHWHZDVGHVLJQHGE\XVLQJ,6PHWKRGDQGVHOIFRPSDFWLQJFRQFUHWHZDVGHVLJQHGE\D VLPSOHPL[GHVLJQSURSRVHGE\1DQ6X6&&ZDVGHYHORSHGLQ¶VE\3URI+DJLPH2NDPXUDLQ-DSDQ6&&ZDVRQH RIWKHVSHFLDOFRQFUHWHLQDFURVVWKHZRUOG7KLVSURMHFWGHDOVZLWKWKHFRPSDULVRQRIWZRGLIIHUHQWW\SHVRIKLJKVWUHQJWK FRQFUHWHVWKH\DUHKLJKVWUHQJWKFRQYHQWLRQDOFRQFUHWHDQGKLJKVWUHQJWKVHOIFRPSDFWLQJFRQFUHWH$QH[SHULPHQWDODQG QXPHULFDOVWXG\RQPHFKDQLFDOSURSHUWLHVVXFKDVFRPSUHVVLYHVWUHQJWKIOH[XUDOVWUHQJWKDQGVSOLWWHQVLOHVWUHQJWKRI VHOIFRPSDFWLQJFRQFUHWH6&& DQGWKHFRUUHVSRQGLQJSURSHUWLHVRIFRQYHQWLRQDOFRQFUHWH&& ZHUHVWXGLHG7KHDJHDW ORDGLQJRIWKHFRQFUHWHVIRUDQGGD\VFXULQJ .H\ZRUGV±6HOI&RPSDFWLQJ:RUNDELOLW\6WUHQJWK 'XUDELOLW\

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Vol 7 issue 1 May 2016


ISSN: 2278-621X

1.1.1 Powder method: ,QWKLVPHWKRGVXSHUSODVWLFLVHUVDUHPL[HGZLWKFHPHQWLWLRXVPDWHULDOVVXFKDVIO\DVKVODJHWFWRIRUPDSDVWH7KH SDVWHLQFUHDVHVWKHIORZRIWKHFRQFUHWHDQGKROGVDOOWKHFRQVWLWXHQWVWRJHWKHU 1.1.2 Admixture method: ,Q WKLV PHWKRG LQVWHDG RI WKH FRQYHQWLRQDO VXSHUSODVWLFLVHUV QHZ W\SHV RI VXSHUSODVWLFLVHUV NQRZQ DV SRO\FDUER[\ODWH VXSHUSODVWLFLVHUV DUH XVHG 7KLV QRW RQO\ LQFUHDVHV WKH IORZ FDSDELOLW\ RI WKH FRQFUHWH EXW DOVR LPSURYHV WKH YLVFRVLW\ DQG WKH FRQVWLWXHQW V UHWHQWLRQ SURSHUW\8VDJH RI 6HOI&RPSDFWLQJ &HPHQWV KDV LQFUHDVHG WUHPHQGRXVO\LQWKHSDVWIHZ\HDUV6&&QRWRQO\HQVXUHVDVWUXFWXUHZLWKUREXVWFKDUDFWHULVWLFVEXWDOVRKHOSVLQ WLPHO\FRPSOHWLRQRIEXLOGLQJVWUXFWXUHV

1.2 Properties of SCC: 1.2.1 Compressive strength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ensile strength: :KHQDVVHVVHGXVLQJWKHF\OLQGHUVSOLWWLQJWHVWDVVSHFLILHGLQ%63DUW7HVWLQJFRQFUHWHPHWKRGIRU GHWHUPLQDWLRQ RI WHQVLOH VSOLWWLQJ VWUHQJWK WKH WHQVLOH VWUHQJWK LV FRPSDUDEOH WR WKH VDPH JUDGH RI WUDGLWLRQDO FRQFUHWHDVLVWKHUDWLRRIWHQVLOHWRFRPSUHVVLYHVWUHQJWK 1.2.3 Shrinkage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tructural performance: 7KHVWUXFWXUDOSHUIRUPDQFHRI6&&GRHVQRWGLIIHUPXFKIURPWKDWRIWUDGLWLRQDOFRQFUHWH$VVHVVPHQWE\ORDGLQJWR IDLOXUHRI[[QPPUHLQIRUFHGFROXPQVDQG[[PPEHDPVKDVVKRZQWKDWQRUPDOIUDFWXUH SDWWHUQVRFFXULQDOOFDVHVZLWKWKHDFWXDOIDLOXUHORDGH[FHHGLQJWKHFDOFXODWHGXOWLPDWHORDG 1.2.5 Durability:

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ISSN: 2278-621X

7ZR LQGLFHV RI GXUDELOLW\ KDYH EHHQ LQYHVWLJDWHG FDUERQDWLRQ GHSWK DQG VXUIDFH DEVRUSWLRQ 1R GLIIHUHQFH ZDV IRXQG LQ FDUERQDWLRQ GHSWK EHWZHHQ 6&& DQG WUDGLWLRQDO FRQFUHWH RI WKH VDPH JUDGH GXULQJ WKH VDPH VSHFLILHG SHULRGDQG6&&H[KLELWHGORZHUVXUIDFHDEVRUSWLRQLQGLFDWLQJORZHUSHUPHDELOLW\DQGLPSURYHGGXUDELOLW\ 137 Objectives of Self- Compacting Concrete: 7KH6&&VKRXOGPHHWWKHVRPHIXQFWLRQVDWWKHSODVWLFVWDJHDUHGLIIHUHQWIURPWKRVHRQDWUDGLWLRQDOYLEUDWHGIUHVK FRQFUHWH)LOOLQJRIIRUPZRUNZLWKDOLTXLGVXVSHQVLRQUHTXLUHVZRUNDELOLW\SHUIRUPDQFHZKLFKLVUHFRPPHQGHGWR EHGHVFULEHGDVIROORZV Filling Ability: 6&& LV ILOOLQJ RI HQWLUH IRUPZRUN DQG HQFDSVXODWLRQ RI UHLQIRUFHPHQW DQG RWKHU LQVHUWV ZLWK PDLQWDLQLQJ KRPRJHQHLW\LQERWKYHUWLFDO KRUL]RQWDOGLUHFWLRQVDUHHVVHQWLDO Passing Ability: 6&&LVSDVVLQJWKURXJKFRQJHVWHGDUHDVXFKDVQDUURZVHFWLRQVRIWKHIRUPZRUNHYHQFORVHO\VSDFHGUHLQIRUFHPHQW HWFZLWKRXWEORFNLQJFDXVHGE\LQWHUORFNLQJRIDJJUHJDWHSDUWLFOHV Resistance to Segregation: 6&&LVPDLQWDLQLQJRIKRPRJHQHLW\WKURXJKRXWPL[LQJDQGGXULQJWUDQVSRUWDWLRQDQGFDVWLQJ7KHG\QDPLFVWDELOLW\ UHIHUV WR WKH UHVLVWDQFH WR VHJUHJDWLRQ GXULQJ SODFHPHQW 7KH VWDWLF VWDELOLW\ UHIHUV WR UHVLVWDQFH WR EOHHGLQJ VHJUHJDWLRQDQGVXUIDFHVHWWOHPHQWDIWHUFDVWLQJ Comparison:7\SLFDO6&&YV&RQYHQWLRQDO&RQFUHWH0L[

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2.1 GENERAL: $Q H[SHULPHQWDO VWXG\ LV FRQGXFWHG WR ILQG RXW WKH DQG GD\V &RPSUHVVLYH VSOLWWHQVLOH )OH[XUH WHVW ZHUH FRQGXFWHGRQVHOIFRPSDFWLQJFRQFUHWH,QFRQFUHWHPLFURVLOLFDDQGDGGLWLYHVDUHDGGHG7KHHIIHFWRIDGGLWLRQRI PLFURVLOLFDDQGDGGLWLYHVRQVWUHQJWKDQGZRUNDELOLW\RIFRQFUHWHRYHUWKHFRQYHQWLRQDOFRQFUHWHDUHLQYHVWLJDWHG 2.2 MATERIALS CEMENT: 2UGLQDU\3RUWODQG&HPHQWRI*UDGHDYDLODEOHLQORFDOPDUNHWLVXVHGLQWKHLQYHVWLJDWLRQ7KHFHPHQWXVHGKDV EHHQWHVWHGIRUYDULRXVSURSHUWLHVDVSHU,6±DQGIRXQGWREHFRQIRUPLQJWRYDULRXVVSHFLILFDWLRQVDVSHU ,6±7KHWHVWUHVXOWVRQRUGLQDU\3RUWODQGFHPHQWDUHVKRZQLQ7DEOH± FINE AGGREGATE: 7KH ORFDOO\ DYDLODEOH VDQG LV XVHG DV ILQH DJJUHJDWH ,W VKRXOG EH IUHH IURP FOD\ VLOW RUJDQLF LPSXULWLHV HWF WKH VDQGLVWHVWHGIRUYDULRXVSURSHUWLHVVXFKDVVSHFLILFJUDYLW\EXONGHQVLW\HWFLQDFFRUGDQFHZLWK,6± 7KH JUDGLQJ RU SDUWLFOH VL]H GLVWULEXWLRQ RI ILQH DJJUHJDWH VKRZV WKDW LW LV FORVH WR JUDGLQJ RU SDUWLFOH VL]H

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ISSN: 2278-621X

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http://dx.doi.org/10.21172/1.71.050

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ISSN: 2278-621X

List of test methods for workability properties of SCC: 6OXPSIORZ 7WHVW /ER[WHVW 9IXQQHOWHVW 9IXQQHODW7PLQXWV

2.3.1. Slump Flow & T50 test: 6OXPS)ORZLVGHILQLWHO\RQHRIWKHPRVWFRPPRQO\XVHG6&&WHVWVDWWKHFXUUHQWWLPH7KLVWHVWLQYROYHVWKHXVHRIWKH VOXPS FRQH XVHG ZLWK FRQYHQWLRQDO FRQFUHWHV DV GHVFULEHG LQ $670 & 7KH PDLQ GLIIHUHQFH EHWZHHQ WKH 6OXPS)ORZWHVWDQG$670&LVWKDWWKH6OXPS)ORZWHVWPHDVXUHVWKH³VSUHDG´RU³IORZ´RIWKHFRQFUHWHVDPSOH RQFH WKH FRQH LV OLIWHG UDWKHU WKDQ WKH WUDGLWLRQDO ³VOXPS´ GURS LQ KHLJKW RI WKH FRQFUHWH VDPSOH 7KH 7 WHVW LV GHWHUPLQHGGXULQJWKH6OXPS)ORZWHVWLWLVVLPSO\WKHDPRXQWRIWLPHWKDWWKHFRQFUHWHWDNHVWRIORZWRDGLDPHWHURI FHQWLPHWHUV 7\SLFDOO\ 6OXPS )ORZ YDOXHV RI DSSUR[LPDWHO\ WR LQFKHV DUH ZLWKLQ WKH DFFHSWDEOH UDQJH DFFHSWDEOH7WLPHVUDQJHIURPWRVHF Apparatus: 0RXOG LQ WKH VKDSH RI D WUXQFDWHG FRQH ZLWK WKH LQWHUQDO GLPHQVLRQV PP GLDPHWHU DW WKH EDVHPPGLDPHWHUDWWKHWRSDQGDKHLJKWRIPPFRQIRUPLQJWR(1 %DVH SODWH RI D VWLII QRQDEVRUELQJ PDWHULDO DW OHDVW PP VTXDUH PDUNHG ZLWK D FLUFOH PDUNLQJ WKH FHQWUDO ORFDWLRQIRUWKHVOXPSFRQHDQGDIXUWKHUFRQFHQWULFFLUFOHRIPPGLDPHWHU 7URZHO

6FRRS 5XOHU 6WRSZDWFK The procedure for the Slump Flow and T50 is as follows, and the sequence is summarized in Figure. 'DPSHQ6OXPS)ORZWDEOHDQGVOXPSFRQH /HYHOWKH6OXPS)ORZWDEOH 3ODFHFRQHRQWKHFHQWUHRIWKHWDEOHWKDWKDVDFLUFOHKDYLQJDGLDPHWHURIFHQWLPHWUHVGUDZQFRQFHQWULFDOO\WR WKHORFDWLRQIRUWKHVOXPSFRQH 8VLQJIXQQHODQGZLWKRQHSHUVRQKROGLQJFRQHGRZQDVWRDYRLGFRQFUHWHSXVKLQJLWVHOIXQGHUQHDWKWKHFRQH FRQWLQXRXVO\ILOOWKHFRQHZLWKDUHSUHVHQWDWLYHVDPSOHFRQFUHWHIURPEXFNHW 6FUHHGDQGOHYHOWKHFRQFUHWHIURPWKHWRSRIWKHFRQHDVWRHQVXUHWKHSURSHUDPRXQWRIFRQFUHWHLVZLWKLQWKH FRQH ,PPHGLDWHO\UHPRYHIXQQHO

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ISSN: 2278-621X

2.3.2. L-box test: 7KH/ER[YDOXHLVDUDWLRRIWKHOHYHOVRIFRQFUHWHDWHDFKHQGRIWKHER[DIWHUWKHWHVWLVFRPSOHWH7KH /ER[FRQVLVWVRID³FKLPQH\´VHFWLRQDQGD³WURXJK´VHFWLRQDIWHUWKHWHVWLVFRPSOHWHWKHOHYHORIFRQFUHWHLQWKH FKLPQH\LVUHFRUGHGDV+WKHOHYHORIFRQFUHWHLQWKHWURXJKLVUHFRUGHGDV+7KH/ER[YDOXHDOVRUHIHUUHGWRDV WKH ³/ER[ UDWLR´ ³EORFNLQJ YDOXH´ RU ³EORFNLQJ UDWLR´ LV VLPSO\ ++ 7\SLFDO DFFHSWDEOH YDOXHV IRU WKH /ER[ YDOXHDUHLQWKHUDQJHRIWR,IWKHFRQFUHWHZDVSHUIHFWO\OHYHODIWHUWKHWHVWLVFRPSOHWHWKH/ER[YDOXHZRXOG EHHTXDOWRFRQYHUVHO\LIWKHFRQFUHWHZDVWRRVWLIIWRIORZWRWKHHQGRIWKHWURXJKWKH/ER[YDOXHZRXOGEH HTXDOWR]HUR Apparatus: /%R[RIDVWLIIQRQDEVRUELQJPDWHULDO 7URZHO 6FRRS 6WRSZDWFK The procedure for the L-box test is as follows: 'DPSHQDOOVXUIDFHVRIWKH/ER[WKDWZLOOEHLQFRQWDFWZLWKFRQFUHWH 0DNHVXUHWKDWWKHJDWHLVUHVWUDLQHGDVWRDYRLGSUHPDWXUHIORZRIFRQFUHWHWKURXJKWKH/ER[ &RQWLQXRXVO\ILOOWKHXSSHUSRUWLRQRIWKH/ER[ZLWKDUHSUHVHQWDWLYHVDPSOHFRQFUHWHIURPDEXFNHW 6FUHHGWKHFRQFUHWHIURPWKHWRSRIWKHER[DVWRHQVXUHWKHSURSHUDPRXQWRIFRQFUHWHLVZLWKLQWKHDSSDUDWXV 3URPSWO\RSHQOLIWWKHJDWHWRDOORZIORZRIFRQFUHWHWKURXJKWKH/ER[ 2QFHWKHFRQFUHWHKDVFHDVHGWRIORZQRPRUHWKDQRQHPLQXWHIURPWKHRSHQLQJOLIWLQJRIWKHJDWH PHDVXUHWKH KHLJKWRIFRQFUHWHDWWKH³WURXJKHQG´UHFRUGWKLVDV+ DQGDWWKH³FKLPQH\HQG´UHFRUGWKLVDV+ RIWKH/ ER[WRWKHQHDUHVWòLQFK 7KH/ER[UDWLRLVFDOFXODWHGDV++)RUDVXPPDUL]HGYLVXDOGLVSOD\RIWKH/ER[VHTXHQFHUHIHUVWR)LJXUH

2.3.3 V-funnel test and V-funnel test at T5minutes: 9IXQQHOWHVWLVXVHGWRGHWHUPLQHWKHILOOLQJDELOLW\IORZDELOLW\ RIWKHFRQFUHWHZLWKDPD[LPXPDJJUHJDWH VL]H RI PP 7KH IXQQHO LV ILOOHG ZLWK DERXW OLWHUV RI FRQFUHWH DQG WKH WLPH WDNHQ IRU LW WR IORZ WKURXJK WKH DSSDUDWXVPHDVXUHG$IWHUWKLVWKHIXQQHOFDQEHUHILOOHGFRQFUHWHDQGOHIWIRUPLQXWHVWRVHWWOH,IWKHFRQFUHWHVKRZV VHJUHJDWLRQWKHQWKHIORZWLPHZLOOLQFUHDVHVLJQLILFDQWO\

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ISSN: 2278-621X

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ISSN: 2278-621X

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ISSN: 2278-621X

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http://dx.doi.org/10.21172/1.71.050

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ISSN: 2278-621X

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ISSN: 2278-621X

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