ACI 533R-11: Guide for Precast Concrete Wall Panels by ACI Committee 533

By ACI Committee 533

This advisor provides strategies for precast concrete wall panels. it's going to be used with ACI 318-08, “Building Code specifications for Structural strengthened Concrete,” that's legally binding while followed by means of the neighborhood authority. This advisor discusses the elemental ideas of layout, tolerances, fabrics, fabrication, set up, caliber requisites, and testing.

Keywords: admixtures; aggregates; architectural concrete; coatings; cracking (fracturing); curing; deflection; layout; drying shrinkage; fabrication; formwork; inspection; deploy joints (junction); precast concrete panels; upkeep; sandwich panels; sealants; structural layout; floor defects; tolerances; quantity swap.

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Sample text

LIRWXEGOMRKWXIQQIHQIQFIVWSVTPEROWHYRREKIWLSYPH RSXFILMKLIVXLERSRIWXEGOSJTVIGEWXYRMXW1IQFIVWWLSYPH FIWXEGOIHWSPMJXMRKHIZMGIW[MPPFIEGGIWWMFPIERHYRHEQEKIH 8LIYTTIVQIQFIVWSJEWXEGOIHXMIVWLSYPHRSXFIYWIHEWEHHM XMSREPWXSVEKIEVIEJSVWLSVXIVQIQFIVWSVIUYMTQIRX 8LI IVIGXSV MW VIWTSRWMFPI JSV TVSTIV SRWMXI WXSVEKI [LIXLIVTPERRIHSVYRTPERRIH3RGIXLIIVIGXSVMRWTIGXWXLI QEXIVMEPFIJSVIYRPSEHMRKERHEGGITXWXLIQEXIVMEPJVSQXLI WLMTTIVVIWTSRWMFMPMX]MWEWWYQIHJSVWEJIOIITMRKYRXMPXLI TVIGEWXYRMXWEVIMRWXEPPIH  4ERIPWYTTSVX{4ERIPWWLSYPHFIWXSVIH[MXLMHIR tification marks clearly visible and supports at the blocking TSMRXWWLS[RSRXLIMRWXEPPEXMSRHVE[MRKW4ERIPWWLSYPHFI FPSGOIHXSTVIZIRXXMTTMRK;LIRTERIPWEVITPEGIHEKEMRWX EJVEQISVWYTTSVXXLI]WLSYPHFIWIXSRTVSXIGXMZIQEXIVMEP PEMHLSVM^SRXEPP]YRHIVERHFIX[IIRXLITERIPW8LMWTVSXIG XMZIQEXIVMEPWLSYPHFIWIPIGXIHWSXLEXXLIFPSGOMRKQEXI VMEP [MPP RSX WXEMR XLI TERIPW 4PEWXMG GLEMVW GLEMR KYEVHW ERH FIEVMRK TEHW EVI VIEHMP] EZEMPEFPI ERH HS RSX WXEMR ;SSH FPSGOMRK WLSYPH FI [VETTIH MR +*64 WLIIXMRK XS EZSMH [SSH WXEMRW XLEX GER GEYWI TERIP VINIGXMSR 4SP]WX] VIRIFPSGOMRKQE]HMWWSPZI[LIRWIEPIVWSPZIRXWGSRXEGXMX This leaves an unsightly patch of polystyrene that is difficult XSVIQSZI[MXLSYXHIJEGMRKXLITERIP;LIRWSPZIRXFEWIH WIEPIVWEVIRSXYWIHTSP]WX]VIRITVSZMHIWKSSHTVSXIGXMSRMJ MXMWEHIUYEXIP]WM^IHXSWYTTSVXXLIMQTSWIHPSEH {-RWXEPPEXMSR  ;SVOQERWLMT{;SVOIVWWLSYPHFIXVEMRIHXSLERHPI ERH IVIGX TVIGEWX GSRGVIXI TERIPW -RWXEPPEXMSR QIXLSHW WLSYPHFITPERRIHXSEZSMHWSMPMRKGVEGOMRKGLMTTMRKERH %QIVMGER'SRGVIXI-RWXMXYXI'ST]VMKLXIH1EXIVMEP{[[[GSRGVIXISVK  +9-()*3646)'%78'32'6)8);%004%2)07 %'-6 HEQEKI XS FYMPXMR MXIQW 'LMTTMRK ERH WTEPPMRK QE] FI VITEMVIHEXXLINSFWMXIEJXIVMRWXEPPEXMSR[LIRTIVJSVQIHXS XLIWEXMWJEGXMSRSJXLIIRKMRIIVEVGLMXIGX -RWXEPPEXMSRWYTIVZMWSVWEVIRSXKIRIVEPP]I\TIGXIH XSORS[LS[XSSTIVEXIXLIIUYMTQIRXXLI]WYTIVZMWI8LI] WLSYPHLS[IZIVFIJEQMPMEV[MXLXLITVSTIVWIXYTPMQMXE XMSRW ERH WEJI YWI SJ XLI IUYMTQIRX 8LI] WLSYPH SFXEMR XLISTIVEXSVvWMRWTIGXMSRVITSVXFIJSVIKMZMRKMRWXVYGXMSRWXS TVSGIIH[MXLXLI[SVO —Safe and efficient use of cranes, hoists, personnel PMJXW ERH SXLIV WTIGMEPM^IH IUYMTQIRX VIUYMVIW STIVEXSV training and qualification.

Polishing can be done with finer grits. Generally, honing alone provides a sufficiently smooth surface for TVIGEWXTERIPW +VMRHMRKIPIQIRXWEVIQEHI[MXLGEVFSVYRHYQFSRHIHF] VIWMRSV[MXLHMEQSRHWWIXMRKVMRHMRKWYVJEGIW(MEQSRH IPIQIRXWGYXJEWXIVERH[IEVPSRKIVFYXEVIMRMXMEPP]QSVI I\TIRWMZI ,SRMRK ERH TSPMWLMRK IUYMTQIRX ZEVMIW JVSQ LERH KVMRHIVWXSIPEFSVEXIQYPXMLIEHQEGLMRIW%MV ZSMHW in the concrete surface should be filled with cementitious TEWXI [LIR XLI QEXVM\ MW I\TSWIH HYVMRK MRMXMEP KVMRHMRK Thorough inspection is required to find and fill air voids after MRMXMEPKVMRHMRK7YFWIUYIRXKVMRHMRKWLSYPHFIHIPE]IHYRXMP the fill paste material has gained adequate strength.

Strength of the concrete and fill paste material should be 5000 psi 14E
FIJSVIFIKMRRMRKER]KVMRHMRKSVTSPMWLMRKSTIV EXMSRW1IHMYQXSHIITI\TSWYVIWTVSZMHIEQSVIYRMJSVQ  *MK{%KKVIKEXII\TSWIHF]WERHFPEWXMRK ETTIEVERGIFIGEYWIGSEVWIEKKVIKEXIWX]TMGEPP]TSPMWLFIXXIV XLERXLIGSRGVIXIQEXVM\  %GMH IXGLMRK{&IGEYWI QER] EKKVIKEXI X]TIW EVI YWIH MR EVGLMXIGXYVEP GSRGVIXI GEYXMSR MW EHZMWIH [LIR YWMRK EGMHW XS I\TSWI EKKVIKEXI &IJSVI EGMH IXGLMRK E GSRGVIXI WYVJEGI XLI IJJIGXW SJ ZEVMSYW EGMH GSRGIRXVE XMSRWJSVI\TSWMRKEKKVIKEXIWSVGPIERMRKTERIPWWLSYPHFI XLSVSYKLP] WXYHMIH 'SRGVIXI EKKVIKEXIW WLSYPH FI UYEVX^ KVERMXISVSXLIVEGMHVIWMWXERXWXSRI0MQIWXSRIWHSPSQMXIW ERHQEVFPIW[MPPIMXLIVHMWWSPZISVHMWGSPSV[LIRI\TSWIHXS QYVMEXMGEGMH%GMHWQE]EPWSMRGVIEWIXLIGLIQMGEPVIEGXMSR FIX[IIRWMPMGEXIWMRXLIEKKVIKEXIERHXLIJVIIPMQIPMFIVEXIH JVSQXLIGIQIRX8LMWGERPIEHXSGEPGMYQWMPMGEXIHITSWMXW SRXLITERIPWYVJEGIMJVIWMHYILEVHIRWSRXLIWYVJEGI%GMH [EWLIW GER HEQEKI XLI KEPZERM^MRK SJ I\TSWIH LEVH[EVI ERHVIMRJSVGMRKFEVWMJGSZIVMWPIWWXLERVIGSQQIRHIH ;LIRETTP]MRKEGMHMXWLSYPHFIGSRXMRYSYWP]FVYWLIHSV WGVYFFIHXSIRWYVIYRMJSVQVIEGXMSR[MXLXLIGIQIRXWYVJEGI %GMH[EWLMRKWLSYPHRSXFITIVJSVQIHYRXMPXLIGSRGVIXIMR XLITVIGEWXTERIPLEWVIEGLIHEQMRMQYQWXVIRKXLSJ SV  TWM  SV  14E
 %PP TIVWSRRIPI\TSWIH XS ER]EGMHJVSQXLIWYVJEGIETTPMGEXMSRQIXLSHWLSYPH[IEV TVSXIGXMZI GPSXLMRK ERH GSZIVMRK XS TVIZIRX MRNYV] JVSQ EGMHWTEXXIVMRK%GMHWLSYPHFIGSQTPIXIP]RIYXVEPM^IHERH flushed from the concrete with clear, clean water to prevent ]IPPS[MRK SV SXLIV HMWGSPSVEXMSR 8LI QE\MQYQ XMQI XLEX EGMHWLSYPHFIEPPS[IHXSVIQEMRSRXLIGSRGVIXIWLSYPHRSX I\GIIHQMRYXIW(IITIXGLI\TSWYVIWLSYPHFIEGLMIZIH F]QYPXMTPIXVIEXQIRXWVEXLIVXLERTVSPSRKIHGSRXEGX {'SRGVIXIGYVMRK  -RXVSHYGXMSR{Concrete cures provided that suffi GMIRX QSMWXYVI MW TVIWIRX ERH JEZSVEFPI XIQTIVEXYVIW EVI QEMRXEMRIH -R TVIGEWX GSRGVIXI JEFVMGEXMSR MRMXMEP GYVMRK YWYEPP] XEOIW TPEGI MR XLI JSVQ 7IGSRHEV] GYVMRK XEOIW TPEGIEJXIVXLITVSHYGXMWVIQSZIHJVSQXLIJSVQ7IGSRHEV] GYVMRK QE] FI PIWW MQTSVXERX MR TVIGEWX GSRGVIXI FIGEYWI HIWMKRWXVIRKXLW EVI IWXEFPMWLIH WSTERIPW VIWMWX QE\MQYQ WXVIWWIWYWYEPP]SGGYVVMRKHYVMRKWXVMTTMRKERHLERHPMRK'SRGVIXI QM\XYVIWJSVTVIGEWXTERIPWKIRIVEPP]GSRXEMR8]TI---LMKL early-strength cement or very finely ground Type I cement %QIVMGER'SRGVIXI-RWXMXYXI'ST]VMKLXIH1EXIVMEP{[[[GSRGVIXISVK  +9-()*3646)'%78'32'6)8);%004%2)07 %'-6 with sufficiently high cement contents to assure adequate WXVIRKXL EX WXVMTTMRK YWYEPP]  TWM  14E
 8LMW WXVIRKXL MW SJXIR EGLMIZIH [MXLMR  XS  LSYVW [LMPI XLI TVIGEWXTERIPMWWXMPP MRXLIJSVQ4ERIPW[MXLTVIXIRWMSRIH TVIWXVIWWMRK SV TSWXXIRWMSRMRK QE] VIUYMVI LMKLIV VIPIEWI strength and should be specified by the panel designer.

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