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3_corrosion In Coastal Environments

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MCBH – Construction MCBH – Inland Site MCBH – Coastal Site Pre-Fabricated and stored at Hunt Building in Pearl City Iroquois - Inland Wheeler AAF Iroquois - Coastal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email protected]/)*+,83 <)2=881.>()8=.?8,7+7 B3+(5,85.:*28/+ G*5,3(.98547.H*7(.#*=*,, 98*7+*).6,+( 456+(,7*56+,)-./*;. 058*6,9566-:6 :T 6,1(.I*)) 456+(,7*56+,)-./ 058*6,9566-:6 D"EDF !" :& #$%& 98/483.:8;*+,83 '()*+,-(.#/0,1,+2.*31. %(04(5*+/5(.6(37857 9#"Y2"%$' ="%&1 9#"Y2"%$'=#"(%+. @@(: ABCD(6+E ?<0*- 4020+*+&#- @@D(:(ABCDD(6+E 7&-2,0('+#"8(9#:0' 5"*''(6&0,. !"#$%#&'()#*'+*, /"01*&,&-2 3&-. 4020+*+&#;*<9+(=*">#" 5"*''(6&0,. !"#$%#&'(!-,*-. 9#"Y2"%$'A&C+"$2#.$ 9#"Y2"%$'!"*$1*+ 9#"Y2"%$'9&+*&/ Z>..+.#'B#48'B%#(%.+/ ?@ 9#"Y2"%$ !"*$1*+@ 9#"Y2"%$' 9&+*&/' *&/' Z>..+.#' BB0 ?@ ?@ !S ?@ 789S !Q R+>E* 3+11 !F 789Q BC%&'$+1*0)-;)$* D+>E !" :;&$ 0'+<1 =;+>& ?@ =(2&*3+11 A)'%4*+%*34&&1&' A)'%4*+%*#'(.-)(/*0)+/%+1 ?@ 789" 0&(1($J*I1+$ !M 0)G&'&2 0'+<1 =;+>& 789M =(2&*3+11 NBOP I1,<))2*/4&+%4($J*<(%4* #$/-1+%()$ 6')$%* 3+11 I1,<))2*K&1)<*L)(/%/ A)'%4*+%*#'(.-)(/*#$1+$2 #$/-1+%()$*K&%<&&$ >&(1($J*L)(/%/ #$%&'()'*!+,)-% #'(.-)(/*0)+/%+1*+$2*#$1+$2 34&&1&'*556 !" 789" 0)-;)$*!)>+%()$ D&1+%(G&*7-H(2(%,*+$2* 9&H;&'+%-'&*=&$/)'/ B14"$G>.#%C' 9&$1#24.&1*1%"& DE'!"++.6.'"('A&6;'3 `K^@LLL' (2&/%&6 ! 0%,.'%/.&1%C*+'F.*1>.#'$1*1%"&$ ! N&.'+"C*1./'*1'.*C>'$%1. ! !*4G7.++'5C%.&1%(%C'%&$1#24.&1$' *&/'/*1*+"66.# ! R R R R R Z%&/'$G../'*&/'/%#.C1%"& <*%&(*++ 5"+*#'#*/%*1%"& AS1.#%"#'.#%C'!>+"#%/.'!*&/+. B14"$G>.#%C'C>+"#%/.' /.G"$%1%"&'#*1. ! !",.#./'("#'#*%&' G#"1.C1%"& ! <.G"#1./'*$' 46!+a4Ka/*8 ! Chloride Deposition Rates 3000.00 Wheeler AAF Chloride Deposition Rate (mg/m 2/day) Iriquois Inland 2500.00 Iriquois Coastal MCBH Inland 2000.00 MCBH Coastal 1500.00 1000.00 500.00 0.00 MCBH Coastal MCBH Inland Iriquois Coastal Iriquois Inland Wheeler AAF 0%.+/'U.$1'!"&&.C1%"&$ ! =0$> !"&&.C1%"&'5.+.C1%"&[ R R !"#$%&'()&*+,-. :%"8(? HKI'bQL'$C#.F$ 89!:&63;2<9&'+*G'$G+%C.'"('Q;K^c'F%/.'Qd'6*''' =0$> H^M'4%+I')dL'6*+,*&%-./'G+*1.$''''''''''''''''' HT%&C'C"*1%&6'*GG#"S;'QK;^'µ4I 6234+01 /011234+01&52-4&6723+*21 ! P"S3>.*/''''''''''''E.S3>.*/ 5C#.F'5.+.C1%"&[ R R R bQL'E.S'>.*/'6*+,*&%-./'$C#.F$ 5.+(3/#%++%&6@'$.+(31*GG%&6 T%&C'C"*1%&6'*GG#"S;']'3 M'µ4 N7$.#,*1%"&$'*1' V!WE'!"*$1*+ AS1.#%"#'!"&&.C1%"&$ V!WE'!"*$1*+'X V!WE'!"*$1*+' X AS1.#%"#'!"&&.C1%"&$ e'V"&1>$'ASG"$2#. MCBH Coastal - Exterior exposure (L7) - 7 Months 3.5 Field Specimen 1 Field Specimen 2 3 Field Specimen 3 Control 1 Control 2 2.5 Control 3 Load (kips) Field Ave Strength Field Peak Disp. 2 Control Ave Strength Control Peak Disp. 1.5 1 0.5 0 0.00 0.05 0.10 0.15 0.20 Elongation (in) 0.25 0.30 0.35 0.40 V!WE'!"*$1*+'X V!WE'!"*$1*+' X NG.&'!#*F+'!"&&.C1%"&$ e'V"&1>$'ASG"$2#. MCBH Coastal - Open Crawl exposure (L5) - 7 Months 3.5 Field Specimen 1 Field Specimen 2 3 Field Specimen 3 Control 1 Control 2 2.5 Control 3 Load (kips) Field Ave Strength Field Peak Disp. 2 Control Ave Strength Control Peak Disp. 1.5 1 0.5 0 0 0.05 0.1 0.15 0.2 Elongation (in) 0.25 0.3 0.35 0.4 Average Peak Strength - 7 Month exposure 1.10 1.00 0.90 Strength Ratio 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 Control MCBH Inland MCBH Coast Exterior Open Crawl Iroquois Coast Exterior MCBH Coast Exterior MCBH Coast Covered Crawl MCBH Coast Ext 3M Open Crawl 4M Average Displacement at Peak Load - 7 Months Exposure 1.00 0.90 Displacement Ratio 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 Control MCBH Inland Exterior MCBH Coast Covered Crawl MCBH Coast Iroquois MCBH Coast Open Crawl Coast Exterior Exterior MCBH Coast Ext 3M Open Crawl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f'!"4%&C"; R R R R R Z.*f'$*+1'F*1.#'$"+21%"&'HL;Lgh'NaClI 5*+1'$G#*8'("#'Q^'4%&21.$'*1']^" ! ?#8%&6'("#']L'4%&21.$'*1']^"! <.G.*1 W.$1'#.G+%C*1.$'QL[Q'C"##"$%"&'#*1%"'("#' 51..+[T%&C'%&'*14"$G>.#%C'C"&/%1%"&$ 51..+'*&/'T%&C'!"2G"&$ 51..+' !"2G"& 5*&/3W+*$1./' 51..+'!"2G"& T%&C' !"2G"& ^'?*8$'X ^'?*8$' X QdL'!8C+.$ 1.8 Comparison of Steel and Zinc Corrosion Rates 1.6 Steel Coupons 1.4 Weight loss, % 1.2 1 0.8 0.6 0.4 0.2 0 0 500 1000 1500 2000 Number of cycles 2500 3000 3500 1.8 Comparison of Steel and Zinc Corrosion Rates 1.6 Steel Coupons 1.4 Zinc Coupons Weight loss, % 1.2 1 0.8 0.6 0.4 0.2 0 0 500 1000 1500 2000 Number of cycles 2500 3000 3500 16 Ratio of Steel/Zinc corrosion rates Ratio of Steel/Zinc % Loss . 14 12 10 8 6 4 2 0 0 500 1000 1500 2000 Number of cycles 2500 3000 3500 0.2 Comparison of Steel and Zinc Corrosion Rates Mass loss (gm/m2/cycle*103) . 0.18 0.16 Steel Coupons 0.14 Zinc Coupons 0.12 0.1 0.08 0.06 0.04 0.02 0 0 500 1000 1500 2000 Number of cycles 2500 3000 3500 !"&&.C1%"&$'*(1.#'QL^d'!8C+.$ U>#.*/$'?"F& U>#.*/$'DG Connection Tests - 1056 cycles - Threads down 3.5 Specimen 1 Specimen 2 3 Specimen 3 Control 1 Control 2 2.5 Control 3 Load (kips) Specimen Ave Strength Specimen Peak Disp. 2 Control Ave Strength Control Ave Peak Disp. 1.5 1 0.5 0 0 0.05 0.1 0.15 0.2 Elongation (in) 0.25 0.3 0.35 0.4 Connection Tests - 1056 cycles - Threads up 3.5 Specimen 1 Specimen 2 3 Specimen 3 Control 1 Control 2 2.5 Control 3 Load (kips) Specimen Ave Strength Control Ave Strength 2 Specimen Peak Disp. 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