concret osen clim as f rios

7/26/2019 Concret Osen Clim as f Rios

1/16

2016TRABAJO DE INVESTIGACION

INTEGRANTES:

JACOB SANTOS FERNANDEZ

DOCENTE: ING: VILLEGAS

TEMA: Concreto

en cl!"# Fr$o#TECNOLOGIA DEL CONCRETO

Tecnolo%$" &el concreto ' Gr()o *+%n" 1


2/16

OBJETIVOS:

1,' D"r " conocer lo# !-to&o# )"r" l" )re.enc/n &e &"o# en el concreto&e&o "l con%el"!ento " te!)r"n" e&"&,

2,' Mo#tr"r lo# !-to&o# )"r" "#e%(r"r (e el concreto &e#"rrolle l"re##tenc" re(er&" )"r" (n &e#enco3r"&o #e%(ro4 el retro #e%(ro &e lo#")(nt"l"!ento# 5 )"r" (n" c"r%" #e%(r" &e l" e#tr(ct(r" &(r"nte 5 &e#)(-#&e l" con#tr(cc/n,,' In3or!"r #ore c/!o !"ntener con&cone# &e c(r"&o (e #"t#3"%"n (nnor!"l &e#"rrollo &e l" re##tenc" #n (#"r &e!"#"&o c"lor 5 #n c"(#"r#"t(r"c/n cr$tc" en el concreto "l 7n"l &el )er$o&o &e )rotecc/n,8,' In3or!"r #ore el tr"t"!ento &el concreto en e#to# cl!"# t"le# co!o el!e9cl"&o 5 el tr"n#)orte,

,'*re.enr &"o# en el concreto &e&o "l con%el"!ento " te!)r"n" e&"&,6,'A#e%(r"r (e el concreto &e#"rrolle l" re##tenc" re(er&" )"r" (n&e#enco3r"&o #e%(ro4 el retro #e%(ro &e lo# ")(nt"l"!ento# 5 )"r" (n"c"r%" #e%(r" &e l" e#tr(ct(r" &(r"nte 5 &e#)(-# &e l" con#tr(cc/n,

;,'M"ntener con&cone# &e c(r"&o (e #"t#3"%"n (n nor!"l &e#"rrollo &e l"re##tenc" #n (#"r &e!"#"&o c"lor 5 #n c"(#"r #"t(r"c/n cr$tc" en elconcreto "l 7n"l &el )er$o&o &e )rotecc/n,


3/16

Intro&(cc/n:

En l" n%ener$" #e )re#ent"n &.er#o# )role!"# no #olo en c("nto "l c+lc(lo5 eo e#tr(ct(r"l4 #no t"!-n en c("nto "l !"ter"l (e #e (#" )"r" (n"con#tr(cc/n 5 (e e#te #e" el n&c"&o )"r" (e #e "lc"nce l" &(r"l&"& 5el !+=!o ren&!ento en el #er.co )"r" el c("l l" e&7c"c/n e#t-&e#tn"&", L" nte!)ere 5 el cl!" e# (no &e lo# 3"ctore# (e n>(5e !(c?oen c("nto " l" elecc/n &el !"ter"l ")ro)"&o 5" (e no e# lo !#!ocon#tr(r en (n" 9on" &e cl!" tro)c"l (e en (n" 9on" &e cl!" 3r$%&o (ee# )rec#"!ente " lo (e en e#t" )re#ent"c/n #e ?"r+ !enc/n "ltr"t"!ento &el concreto co!o !"ter"l )rnc)"l &e (n" e&7c"c/n encl!"# 3r$o#,

Se &e7ne co!o cl!" 3r$o co!o (n )er$o&o &on&e )or !+# &e &$"#

con#ec(t.o# l"# #%(ente# con&cone# e=#t"n:

@ L" te!)er"t(r" )ro!e&o &el "re e# !enor " C 80F,

@ L" te!)er"t(r" &el "re no e# !"5or &e 10 C 0 C en !+# &e l" !t"& &ec("l(er )er$o&o &e 28 ?or"#,

@ L" te!)er"t(r" )ro!e&o &el "re e# el )ro!e&o entre l" !+# "lt" 5 l" !+#"" oc(rr&" &(r"nte el )er$o&o &e#&e !e&" noc?e ?"#t" !e&" noc?e, Elcl!" 3r$o t"l co!o e# &e7n&o en e#te tr""o nor!"l!ente e!)e9" en otoo

5 (#("l!ente contn(" ?"#t" l" )r!".er",

Tecnolo%$" &el concreto ' Gr()o *+%n"


4/16

REERIMIENTOS GENERALES:

*l"n7c"c/n: Lo# )l"ne# )"r" )rote%er &e l"# ?el"&"# "l concreto 3re#co 5!"ntener l"# te!)er"t(r"# #ore lo# ."lore# !$n!o# reco!en&"&o# &eeneec(t"r#e "nte# (e oc(rr"n l"# te!)er"t(r"# &e con%el"!ento e#)er"&"#,El e()o 5 lo# !"ter"le# nece#"ro# &een e#t"r en or" "nte# (e oc(rr"el cl!" 3r$o4 no &e#)(-# (e el concreto #e" coloc"&o 5 l"# te!)er"t(r"#e!)ecen " "cerc"r#e "l )(nto &e con%el"!ento,

*rotecc/n &(r"nte otoo 5 )r!".er": D(r"nte )er$o&o# no &e7n&o# co!ocl!" 3r$o4 co!o el otoo o )r!".er"4 )ero c("n&o #e )re.e"n 3(erte#e#c"rc?"# o ?el"&"# en or" to&" l" #()er7ce &el ."c"&o &e concreto

&eer+ e#t"r )rote%&",



5/16

CONCRETOS EN CLIMAS FRIOS

De7nc/n:En %ener"l #e con#&er"n con&cone# e=tre!"# &e te!)er"t(r" )"r" elconcreto c("n&o l" te!)er"t(r" "!ent"l e# n3eror " C 5 #()eror " lo#2


6/16

*or to&o# e#to# !ot.o# lo# cclo# &e con%el"!ento 5 &e#?elo4 )(e&en"3ect"r %r".e!ente l" c"l&"& 7n"l &el concreto "(n c("n&o #e ?"5" nc"&oel )roce#o &e en&(rec!ento, Lo# cl!"# 3r$o# 5 !(5 #eco# "3ect"n elconcreto or%n"n&o el #ec"&o4 )rnc)"l!ente &e #( #()er7ce, L"re##tenc" !$n!" )"r" (e no #e )ro&(9c"n re&(ccone# #%n7c"t."# en l"

re##tenc" 7n"l &el concreto &e&o "l con%el"!ento e# &e %c!2 ACIo BS


7/16

re#trccone# en l" rel"c/n "c lo# con#(!o# &e ce!ento #on (#("l!ente!"5ore# (e )"r" (n cl!" en con&cone# nor!"le#, Ee!, : El Conten&o &eCe!ento )"r" (n 3c210 %c!2 )(e&e #er 1


8/16

D/n&e: Tc3 Te!)er"t(r" &el concreto 3re#co

T" Te!)er"t(r" &e lo# "%re%"&o#

*" *e#o #eco &e lo# "%re%"&o# P%

Tc Te!)er"t(r" &el ce!ento

*c *e#o &el ce!ento,P%

TQ Te!)er"t(r" &el "%("

*Q *e#o &el "%("

TRANS*ORTE DE LA MEZCLA

Dee )l"n7c"r#e lo# )roce&!ento# &e )ro&(cc/n &e concreto4 e.t"n&o%r"n&e# t"nc"# &e tr"n#)orte4 l"r%"# e#)er"# en l" coloc"c/n 5 l"r%"#c"n"let"# &e .ert&o &e t"l !"ner" (e #e re&(9c"n l"# )-r&&"# &e c"lor, L"#%(ente 3/r!(l" no# &" (n" re3erenc" &e l"# )-r&&"# &e c"lor ote!)er"t(r" c("n&o #e tr"n#)ort" l" !e9cl" en (n c"!/n concretero:

/t 0 (1'2T 3 Ta)

D/n&e: Dt *-r&&" &e c"lor o te!), C ?or" &e e#)er"

T Te!)er"t(r" &e#e"&" en or" T" Te!)er"t(r" "!ente,

COLOCACIN DEL CONCRETO

To&o# lo# !"ter"le# nte%r"nte# &el concreto4 "#$ co!o el "cero &e re3(er9o4!"ter"l &e relleno4 5 #(elo con el c("l el concreto ?" &e e#t"r en cont"cto4&eer+n e#t"r lre# &e ne.e4 %r"n9o o ?elo4 reco!en&"n&o "l%(no#

Tecnolo%$" &el concreto ' Gr()o *+%n"


9/16

"(tore# !"ntener l" 9on" " (n !$n!o &e 2 C, S l" te!)er"t(r" e# !enor&e 10 C #e reco!en&" c"lent"r#e el "cero &e re3(er9o !"5or &e 1 5 lo#n#erto# !et+lco#, En l"# (nt"# #e )(e&e c"lent"r el concreto "nt%(o 5)c"rlo )ro3(n&"!ente, El e#)e#or &e l"# c")"# &e concreto &ee #er el

!"5or )o#le co!)"tle con el )roce#o &e co!)"ct"c/n &el concreto, L"te!)er"t(r" &el concreto 3re#co no &ee #er !(5 "lt" )"r" e.t"r el c?o(et-r!co4 no &een&o #er !"5or en 6 C (e l" !$n!" e#)ec7c"&",

CRADO *ROTECCIN DEL CONCRETO

El c(r"&o #e &e7ne co!o el )roce#o )"r" !"ntener l" ?(!e&"& 5 l"te!)er"t(r" &el concreto rec-n coloc"&o4 &(r"nte "l%Hn )er$o&o &e7n&o

)o#teror " l" coloc"c/n4 ."c"&o o "c""&o4 )"r" "#e%(r"r l" ?&r"t"c/n#"t#3"ctor" &e lo# !"ter"le# ce!ent"nte# 5 el en&(rec!ento 5 l""&(#c/n &e re##tenc" )ro)o# &el concreto, En %ener"l el c(r"&o #e &ee!"ntener " 10 C )or lo !eno# lo# ; )r!ero# &$"# 5 )or 10 &$"# # #e (#"ce!ento# I*4 I*M o )(9ol+nco,

L(e%o &e l" )rotecc/n nc"l &(r"nte l"# )r!er"# 28 ?or"# ?"#t" lo%r"r l"re##tenc" !$n!" &e 6 %c!24 e# nece#"ro )rolon%"r l" )rotecc/n 5c(r"&o el !"5or te!)o )o#le #en&o lo reco!en&"le l" )rotecc/n 5c(r"&o )or &$"# )"r" l(e%o )ro#e%(r con el c(r"&o,

C("n&o l" te!)er"t(r" &el !e&o "!ente e# !enor &e C4 l"te!)er"t(r" &el concreto 5" coloc"&o deber4 ser mantenida sobre &(. Cdurante el per$odo de curado !$n!o &e 6 &$"# )"r" #eccone#&el%"&"#, Al%(no# "(tore# reco!en&"n (e # l" te!)er"t(r" e#t+ )orenc!" &e lo# C e# nece#"ro l" )rotecc/n &el concreto #/lo l"# )r!er"#28 ?or"#, Se to!"r+n )rec"(cone# )"r" !"ntener "l concreto &entro &e l"

Tecnolo%$" &el concreto ' Gr()o *+%n" U


10/16

te!)er"t(r" re(er&" #n (e #e )ro&(9c"n &"o# &e&o# " l"concentr"c/n &e c"lor4 tr"t+n&o#e &e no (tl9"r )o#t.o# &e co!(#t/n4&(r"nte l"# )r!er"# 28 ?or"#4 " !eno# (e #e to!en )rec"(cone# )"r"e.t"r l" e=)o#c/n &el concreto " %"#e# (e conten%"n /=&o &e c"rono,

En con&cone# e=tre!"# &e cl!"# 3r$o# e# 3(n&"!ent"l e n)en#"leto!"r !(e#tr"# &e te#t%o# "&con"le# &e control en or" )"r" c(r"rl"# "ol"# !#!"# con&cone# &e l" e#tr(ct(r" ."c"&" 5 "#$ .er7c"r l" e7cenc"&e lo# !-to&o# &e )rotecc/n 5 c(r"&o, Se con#&er" #"t#3"ctoro el c(r"&o 5)rotecc/n4 c("n&o l" re##tenc" )ro!e&o &e l"# )roet"# &e or" #on!"5ore# o %("le# "l


11/16

CONTROL DE LA CALIDAD

El control &e c"l&"& &el concreto !"ter"le#4 )ro&(cc/n4 tr"n#)orte4concreto 3re#co 5 coloc"c/n4 5 concreto en&(rec&o4 &ee #er !(c?o !+#

e#trcto (e )"r" con&cone# nor!"le#, Se &ee lle."r (n control )orc"!/n4 con#%n"n&o lo# &"to# &e te!)o &e c"r%($o4 te!)o &e !e9cl"&o4te!)o &e ."e4 te!)o &e e#)er"4 te!)o &e ."c"&o4 conten&o &e "re4"#ent"!ento4 te!)er"t(r" "!ent"l4 te!)er"t(r" &el concreto4 "%("""&&" en )l"nt"4 "&e!+# &e l"# c"r"cter$#tc"# 3$#c"# &e lo# "%re%"&o#con controle# &e ?(!e&"& c"&" ?or"4 !+# "Hn # l" "ren" e# l"."&",

Se &een !ol&e"r te#t%o# )"r" en#"5"r " l" re##tenc" " 1 &$"4 &$"#4 ;&$"# 5 2< &$"#4 &e"n&o &e re#er." )"r" !"5ore# e&"&e#4 #en&o3(n&"!ent"l to!"r !(e#tr"# "&con"le# )"r" l"# )roet"# &e or",

ZONIFICACIN DE CLIMAS FRIOS EN EL *ER



12/16

En el !")" &e l" 7%(r" #e o#er." lo# cl!"# 3r$o# 5 3r$%&o#4 (c"&o# " lol"r%o &e l" Cor&ller" &e lo# An&e# en *erH, L"# te!)er"t(r"# #on n3erore# "



13/16

10 C #on )ro)"# &e c(&"&e# co!o A"nc"54 Are()"4 A5"c(c?o4C""!"rc"4 X("nc".elc"4 X("nc"5o 5 X("r"9,

En cl!"# 3r$o# l" )reoc()"c/n )rnc)"l &e (n eo &e !e9cl" e#:

(e el concreto )re#ente (n co!)ort"!ento 3".or"le )"r" lle%"r " l"re##tenc" &e#e"&" 5 )"r" lo c("l ?"5 (e tener en c(ent" &.er#o# 3"ctore#(e "3ect"n l" &(r"l&"& &el concreto 5 lo# e3ecto# (e #e )re#ent"n enc"&" !"ter"l4 )"r" el re#)ect.o control #e ""&r+n "&t.o# ncor)or"&ore#&e "re c(5"# r"9one# e=)lc"re!o# !+# "&el"nte,

CONGELAMIENTO DESXIELO

Con#tt(5e (n "%ente &e &eteroro (e oc(rre en lo# cl!"# en (e l"

te!)er"t(r" &e#cen&e ?"#t" )ro.oc"r el con%el"!ento &el "%(" conten&"en lo# )oro# c")l"re# &el concreto,

E#te 3en/!eno4 #e &" t"nto " n.el &e l" )"#t" &e ce!ento4 co!o en lo#"%re%"&o# &e !"ner" n&e)en&ente4 "#$ co!o en l" nter"cc/n &e "!o#)or lo (e #( e."l("c/n &ee "or&"r c"&" (no &e e#to# "#)ecto#,

EFECTO EN LOS AGREGADOS

En lo# "%re%"&o# e=#te e.&enc" &e (e )or lo# t"!"o# M"5ore# &e lo#)oro# c")l"re# *or otro l"&o c("n&o !enor #e" l" c")"c&"& &el "%re%"&o)"r" "#orer "%("4 !enor #er+ el e3ecto &el con%el"!ento nterno &e l"!#!" (e tenen "" &(r"l&"& "nte l" "cc/n &e cclo# &e con%el"c/n4#on "(ello# con (n %r"&o &e )oro#&"& &e !o&er"&o " "lto4 lo (e le#)er!te retener 5 !"ntener (n %r"&o &e #"t(r"c/n rel"t."!ente "lto4c("n&o #e enc(entr"n ncor)or"&o# 5" en el concreto,

EFECTO ENTRE LA *ASTA LOS AGREGADOS

E=#te l" &eno!n"&" YTeor$" El+#tc" (e con#&er" (n e3ecto !=to &e lo#"%re%"&o# #ore l" )"#t"[ 5" (e "l con%el"r#e el "%(" &entro &e ello# #e&e3or!"n el+#tc"!ente #n ro!)er#e )or tener (n" e#tr(ct(r" !+#re##tente (e l" &el ce!ento 5 eercen )re#/n &rect" #ore l" )"#t"%ener"n&o ten#one# "&con"le# " l"# oc"#on"&"# en el ce!enton&e)en&ente!ente,



14/16

ADITIVOS A SAR:

1,' INCOR*ORADORES DE AIRE

En concreto# nor!"le#4 e=#te (n )ro!e&o &e1 &e )oro# &e "re "tr")"&o4lo# c("le# no #on #(7cente# )"r" e.t"r el &eteroro &el concreto c("n&o el"%(" lle%" " con%el"r#e en lo# )oro# #"t(r"&o# &el !#!o, Ello e# &e&o "(e lo# )oro# &e "re "tr")"&o no #e enc(entr"n lo #(7cente!ente cerc" &eto&o# lo# )oro# c")l"re#4 en lo# (e el ?elo)(e&e 3or!"r#e 5 )or t"nto no#on (n" "5(&" #e%(r" en el control &e lo# e#3(er9o# re#(lt"nte#, El )rnc)o&e lo# Incor)or"&ore# &e "re4 con##te en ntro&(cr (n" e#tr(ct(r" "&con"l&e ."c$o# no nterconect"&o#4 (e )er!ten "#!l"r lo# &e#)l"9"!ento#%ener"&o# )or el con%el"!ento el!n"n&o l"# ten#one#,

S "Hn no #e ?" nc"&o el )roce#o &e en&(rec!ento4 5 el concreto #econ%el"4 el "%(" &e "!"#"&o "Hn lre #e con.erte en ?elo 5 #e &etene el)roce#o &e en&(rec!ento4 &e&o " (e el "(!ento .ol(!-trco &el "%("en e#t"&o #/l&o ro!)e l" &-l "&?erenc" entre l"# )"rt$c(l"# &el concreto,

S el en&(rec!ento #e nc"r" (e&"r+ #(#)en&&o ?"#t" (e el concreto #e&e#con%ele4 renc+n&o#e el )roce#o en el )(nto (e (e&/[ ?"r+ (n"!er!" en l" re##tenc" 7n"l4 %r"&o &e co!)"ct"c/n 5 "&?erenc",

El cclo &e con%el"!ento 5 &e#?elo )(e&e tener e3ecto# &e#"#tro#o# en l"c"l&"& 7n"l &el concreto4 "Hn #e ?"5" nc"&o el )roce#o &een&(rec!ento,

2,' EL CLORRO DE CALCIO

E# (n "&t.o "celer"&or )o)(l"r 5 "!)l"!ente (tl9"&o (e re&(ce elte!)o &e 3r"%("&o e ncre!ent" l" .eloc&"& &e &e#"rrollo e l" re##tenc" "te!)r"n" e&"&,

RECOMENDACIONES *ARA LOGRAR N *TIMO RESLTADO

Tener el control &e l" te!)er"t(r" &el concreto4 &(r"nte l" )re)"r"c/n4tr"n#)orte4 coloc"c/n 5 c(r"&o,

E.t"r (e el concreto #e con%ele4 ?"#t" (e #e lo%re el en&(rec!ento (ee.te l" )-r&&" #%n7c"t." &e l" re##tenc" 7n"l4 "#$ co!o &eteroro en el"c""&o,



15/16


16/16

E.t"r c"lent"r "%re%"&o# c("n&o #e" #(7cente ?"cerlo con el"%(", El "%re%"&o #e c"lent"r+ c("n&o ten%" )orcone#con%el"&"#4 !e&"nte:

In5ecc/n &e c?orro# &e .")or " tol."# o )l"# &e "%re%"&o, (c"c/n &etol."# en l(%"re# cerr"&o#4 5 c"lent"&o# "rt7c"l!ente, Te!)er"t(r" &el"%re%"&o no !"5or &e 66F, 1

concret osen clim as f rios

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