distribution of fine aggregate shows that, it is close to grading zone â II or IS: 383 â 1970. And details of sieve analysis are shown in Table â 4.2. COARSE ...
International Journal of Latest Trends in Engineering and Technology (IJLTET)
ISSN: 2278-621X
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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
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
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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
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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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
ISSN: 2278-621X
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3DVVLQJ$ELOLW\
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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
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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6WRSWKHWLPLQJGHYLFHZKHQWKHFRQFUHWHUHDFKHVWKH7OLQHDQGUHFRUGWKLVWLPHWRWKHQHDUHVWòVHFRQGDVWKH 7YDOXH 2QFHWKHFRQFUHWHKDVFHDVHGWRIORZQRPRUHWKDQRQHPLQXWHIURPWKHOLIWLQJRIWKHFRQH PHDVXUHWKHZLGWKRI WKHVSUHDGRIFRQFUHWHDFURVVWKHZLGHVWGLPHQVLRQWKURXJKWKHFHQWHURIWKHVSUHDGWRWKHQHDUHVWò´PHDVXUH DJDLQDWDGHJUHHDQJOH 5HFRUGWKH6OXPS)ORZDVWKHDYHUDJHRIWKHWZRPHDVXUHPHQWV
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International Journal of Latest Trends in Engineering and Technology (IJLTET)
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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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
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352
Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
ISSN: 2278-621X
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353
Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
ISSN: 2278-621X
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Vol 7 issue 1 May 2016
International Journal of Latest Trends in Engineering and Technology (IJLTET)
ISSN: 2278-621X
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