a211 - strat de baza din ciment stabilizat.doc

8/14/2019 A211 - STRAT DE BAZA DIN CIMENT STABILIZAT.doc

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CAIETE DE SARCINI NR. 3

STRAT DE BAZA DIN BALAST STABILIZAT CU CIMENT


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CONTINUT

CAIETE DE SARCINI NR. 3..................................................................................................1STRAT DE BAZA DIN BALAST STABILIZAT CU CIMENT..................................................13.1. Generalitati.....................................................................................................................3

3.1.1Descriere...................................................................................................................33.1.2. Dc!"ente #e Re$erinta..........................................................................................3

3.2 Materiale..........................................................................................................................%3.2.1Ci"ent Prtlan#.........................................................................................................%3.2.2. Agregate..................................................................................................................&

'a( Pentr! e)ec!tia strat!rilr sta*ili+ate c! ci"ent Prtlan# ,r $i $lsite ti-!rile #eagregate aratate in ta*el!l 2..................................................................................................&'*( Agregatele ,r $i -r,eni #in rci sta*ile care n! s!nt alterate in !r"a cn#itiilrat"s$erice 'cntact!l c! aer!l a-a sa! alternari ing/et0#e+g/et(. Este inter+isa $lsirea

agregatelr -r,enite #in rci $el#s-atice sa! -iatra #e ar#e+ie.Cntractr!l ,a s!-rtac/elt!ielile -entr! $lsirea agregatelr #e -iatra s-arta.......................................................'c( Agregatele ,r $i ne!tre si n! ,r ca!+a e$ecte ,ata"atare "aterial!l!i #e legat!ra$lsit la e)ec!tia strat!l!i sta*ili+at.......................................................................................'#( Agregatele nat!rale $lsite la e)ec!tia strat!rilr r!tiere sta*ili+ate c! ci"ent ,r a,eacaracteristicile aratate in Ta*el!l 3 si %..................................................................................'e( Agregatele ,r $i stcate in cantitati s!$iciente -entr! a se asig!ra "genitatea sicn#itii #e calitate cnstante -entr! acelasi ti- #e "aterial. A-r,i+inarea agregatelrcatre statia #e "i)are ,a $i $ac!ta n!"ai #!-a ce testele #e la*ratr in#ica ca s!nta#ec,ate.................................................................................................................................'$( Se ,a e,ita cnta"inarea agregatelr c! i"-!ritati -e #!rata #e-+itarii si in ti"-!l

trans-rt!l!i #e la $!rni+r la statia #e -re-arare 'a"estecare(............................................'g( La statia #e -re-arare 'a"estecare( agregatele ,r $i #e-+itate -e -lat$r"e #e*etn se-arate -e srt!ri e,itan#!0se a"estecarea acci#entala a srt!rilr......................'/( Cntractr!l ,a e$ect!a cntrl!l calitatii agregatelr in cncr#anta c! -re,e#erile #inTa*el!l . ...............................................................................................................................'i( La*ratr!l Cntractr!l!i ,a tine e,i#enta calitatii agregatelr #!-a c!" !r"ea+a .....'4( Pentr! e)ec!tia strat!rilr r!tiere e)ec!tate #in "ateriale reciclate sta*ili+ate c! ci"entcaracteristicile agregatelr re+!ltate #in reciclarea strat!rilr r!tiere e)istente ,r $ianali+ate in -ri"!l ran# -entr! a se *ser,a c"-ati*ilitatea. De *icei strat!rile #instr!ct!ra r!tiera e)istenta ce !r"ea+a a $i reciclate s!nt i"*raca"inti as$altice sa! #in*etn #e ci"ent si strat!ri #e *a+a. In ca+!l in care -ate a-are necesitatea s!-li"entarii

c! agregate acestea tre*!ie sa intr!neasca cn#itiile #e calitate -re,a+!te in ta*el!l % si&.............................................................................................................................................'5( Cntrl!l calitatii acestr agregate ,a $i e$ect!at #e catre Cntractr in cn$r"itate c!-re,e#erile #in ta*el!l . La*ratr!l Cntractr!l!i ,a tine e,i#enta caracteristicilrstrat!l!i #e agregate rec!-erate agregate s!-li"entare i"-rtate si -entr! agregatelereciclate e)istente..................................................................................................................

3.2.3. A-a...........................................................................................................................3.2.%. Materiale #e -rtectie..............................................................................................3.2.&. C"-+itia a"estec!l!i..........................................................................................6

'l( Un la*ratr s-eciali+at a-artinan# sa! $iin# anga4at #e catre Cntractr si a-r*at #ecatre Cns!ltant ,a sta*ili -r-rtiile #!-a gre!tate a agregatelr nat!rale ci"ent!l!i sia-ei si ,a e$ect!a teste -reli"inare -entr! #eter"inarea !r"atarelr caracteristicis-eci$ice................................................................................................................................6


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'"( Ra-rt!l -ri,in# sta*ilirea c"-+itiei ,a $i inaintat Cns!ltant!l!i s-re a-r*are si ,aincl!#e...................................................................................................................................6

211.2.. Sa"-ling an# Testing........................................................................................11

211.3. Ec/i-a"ent..............................................................................................................12211.3.1. Ec/i-a"ent #e Mi)are.......................................................................................12211.3.2. Masini #e I"-rastiere........................................................................................13211.3.3. Distri*!tri..........................................................................................................13211.3.%. C"-actri........................................................................................................13211.3.&. E7!c/i-a"ente #i,erse.....................................................................................13

211.%. Te/nlgia #e e)ec!tie............................................................................................13211.%.1. Generalitati........................................................................................................13211.%.2. Pre-ararea "i)t!rii............................................................................................1&211.%.3. Mi)t!re La8ing...................................................................................................1&211.%.%. C"-actare.......................................................................................................19

211.%.&. Prtectia Strat!l!i..............................................................................................1211.&. Ctrl!l #e calitate -entr! rece-tie..........................................................................16

211.&.1. Tlerante Ge"etrice .......................................................................................16211.&.2. Prele,are #e -r*e si testare............................................................................16

3.1. Generalitati

3.1.1 Descriere

Aceasta s-eci$icatie se re$era la e)ec!tia strat!rilr #e #r!" #in agregate nat!rale

sta*ili+ate c! ci"ent Prtlan# incl!+an# *alast sta*ili+at c! ci"ent si ci"ent sta*ili+at c!agregate reciclate :in sit!;. S-eci$icatia incl!#e cerintele te/nice cntinan# -re-ararea"aterial!l!i in instalatii $i)e si "*ile trans-rt!l "ateriilr -ri"e si a "aterialelr-re-arate ase+area c"-actarea si -rtectia lr.

Dease"enea aceasta s-eci$icatie incl!#e $!rni+area asternerea "#elarea sic"-actarea agregatelr ase+ate #e0a l!ng!l "arginilr str!ct!rii siste"!l!i r!tierreali+at.

3.1.2. Doc!ente "e Re#erinta

1. STAS %


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3.2 Materiale

Materialele tre*!ie sa satis$aca cerintele #e calitate -re,a+!te in #esene in acestes-eci$icatii si ale t!t!rr #c!"entelr #e re$erinta "entinate #e aceste s-eci$icatii ri #eDesene.

Cntractr!l ,a a,ea s!$icient "aterial in stc!rile #in santier la ince-!t!l $iecarei-erati!ni +ilnice -entr! a $i $!rni+at si a $i $lsit in +i!a res-ecti,a.

Plan!l #e Cntrl #e Calitate a Cntractr!l!i ,a c!-rin#e set!l c"-let #e teste -rec!"si $rec,enta -rele,arii #e -r*e si lcatia. Plan!l #e calitate ,a $i tri"is s-re a-r*areCns!ltant!l!i inainte #e ince-erea e)ec!tiei l!crarilr.

3.2.1 Ci!ent $ortlan"

Pentr! sta*ili+area agregatelr nat!rale,a $i $lsit !n!l #in !r"atarele ti-!ri #e ci"ent

Prtlan# ce tre*!ie sa satis$aca cn#itiile #e calitate -re,a+!te in Ta*el!l 1

ci"ent II A0S 32&R STAS 1500@

ci"ent II>A0S 32&@ SR II>A0S 32& SR 3011@

ci"ent I %2.& SR 388@

ci"ent CD %< STAS 10092.

Cntractr!l -ate sa $lseasca si alte ti-!ri #e ci"ent Prtlan# -entr! care el ,a

*tine intai a-r*area Cns!ltant!l!i.

Este rec"an#at ca ci"ent!l $!rni+at sa -r,ina #intr0 sing!ra $a*rica. Ci"ent!l #in

s!rse #i$erite #esi -ate $i testat si a-r*at n! ,a $i a"estecat.

Daca Cntractr!l isi -r-!ne sa $lseasca "ai "!lte ti-!ri #e ci"ent el tre*!ie sa

*tina inainte a-r*area Cns!ltan!l!i.

In ti"-!l trans-rt!l!i #e la $!rni+r la centrala #e #+are a *etn!l!i sa! la !n lc #e

stcare inter"e#iar in ti"-!l "ani-!larii si stcarii ci"ent!l ,a $i -rte4at i"-tri,a

!"i#itatii e)cesi,e si a i"-!ritatilr.

Stcarea ci"ent!l!i ,a $i $ac!ta in cel!le #e ti- sil+ -re,a+!te c! -rtectie i"-tri,a

cn#itiilr at"s$erice.

=iecare ci"ent li,rat ,a $i #e-+itat se-arat -entr! a asig!ra i#enti$icarea -r,enientei

sale si cntrl!l #e calitate.

Ta%el 1


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Caracteristici #i&ico'!ecanice

C i ! e n t( ti)*

II+A'S

32.,R

SR II+A'S

32.,- II+A'S

I 2.,

CD /

Ti"- #e -ri+a #eter"inat -e trcret#e ci"ent c! cnsistenta nr"ala? n! ,a ince-e "ai #e,re"e #e0 n! se ,a -ri "ai tar+i! #e

1.& re0

1.& re0

1 ra0

2 re1< re

0 cresterea ,l!"!l!i -rin test!l c!inel!l Le C/atelier

1c"3(s/all *e #eter"ine# *8 M#i$ie# Prctr test n -lant "i)t!re c"-sitin!sing initiall8 t/e a--r,e# "i) #esign t -re-are t/e "i).

Tests s/all *e carrie# !t n sa"-les -re-are# in t/e la*ratr8 $r" -lant "i) an# nsa"-les cllecte# n site $r" t/e trial sectin. T/e res!lts $ t/e tests an# t/eirinter-retatin Hill *e !se# t cn#!ct t/e $inal a#4!st"ents $ t/e -lant.

A#4!st"ents t t/e "i)ing -lant Hill *e cnsi#ere# $inal H/en tests n t/e -lant "i)c"-sitin Hill "atc/ t/e res!lts $ t/e a--r,e# "i) #esign -re-are# in la*ratr8.

A c"-lete re-rt n t/e -lant an# trial sectin tests an# t/e -r-se# 4* "i) Hill *e s!*"itte#

t t/e a--r,al $ t/e Engineer -rir t starting t/e ce"ent sta*ili+e# ra# la8er Hr5s n site.

Ta%el 8

N!ele stratli A0re0atlContint "e Ci!ent

in 4(al 0retatiia0re0atelor scate

Natra $ro)ortia

Strat!l #e *a+a -entr! -lat$r"elec! siste" r!tier

$le)i*il si gl$!ri #e-arcare

- Agregate #e cariera- Agregate s-arte #e*alastiera sa! #ecariera


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Resistance t c"-ressin N>""2 0 Rc a$ter 9 #a8s 1.& 0 2.2 1.2 0 1. 0 Rc a$ter 2 #a8s 2.2 0 &.< 1. 0 3.


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Material

Actiitatea(

Meto"a "e eri#icare sacaracteristicile "e

eri#icat

;recenta !ini!a

Meto"e "etestare

On s))l< o# !aterial tostora0e 5"e)osit7

Be#ore sin0 te!aterial in !iin0)lant or %e#ore in'

sit rec


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"eet t/e sa"e re7!ire"ents #e-en#ing n t/e "an!$act!rerKs "an!al instr!ctins an#rec""en#atins.

211.3.2. Masini "e I!)rastiere

S-rea#ers s/all *e e7!i--e# Hit/ a#4!sta*le scree#s t "aintain t/e re7!ire# Hi#t/t/ic5ness an# crss sectin an# s/all *e s!$$icient in n!"*er an# ca-acit8 t /an#le-r#!ctin $ t/e -lant. S-rea#ers -r-elle# *8 tr!c5s Hill nt *e -er"itte#.

211.3.3. Distri%tori

Press!ri+e# #istri*!trs in satis$actr8 cn#itin s/all *e ca-a*le $ "aintaining t/es-eci$ie# "ist!re cntent $ t/e "i)t!re n t/e ra#Ha8 #!ring cnstr!ctin.

211.3.. Co!)actori

C"-actrs s/all *e ca-a*le $ -r#!cing t/e re7!ire# #ensit8 an# $inis/.

i*ratr8 C"-actrs s/all *e $ t/e rller t8-e. T/e c"-actr s/all *e e7!i--e# Hit/a"-lit!#e an# $re7!enc8 cntrls an# s-eci$icall8 #esigne# $r t/e c"-actin $ t/e"aterial n H/ic/ it is t *e !se#.

Pne!"atic t8re# rller s/all *e an a--r,e# t8-e Hit/ -ne!"atic t8re H/eels "!nte# n

tH r "re a)les an# s-ace# in s!c/ "anner t/at all t8res /a,e !ni$r" la# an# cntactHit/ t/e s!r$ace an# t/at t/e rear gr!- $ tires Hill c,er t/e ga- *etHeen a#4acent t8res$ t/e $rHar# gr!-. T/e rller s/all *e $ t/e sel$0-r-elle# r trailer t8-e s cnstr!cte#as t -r,i#e $r t/e a##itin $ Heig/ts. It s/all Heig/ !n#er -erating cn#itins nt lesst/an & tns $r a rlling Hi#t/ $ 1.& ". T/e -ress!re $ t/e t8res s/all *e s!c/ t/at t/e t8reis ri#ing s7!are n t/e trea#. T/e rller s/all *e -erate# at a s-ee# nt less t/an & nr"re t/an 12 5il"etres -er /!r.

211.3.,. E=ci)a!ente "ierse

A s-i5e0tt/ /arrH r si"ilar #e,ice s/all *e !se# as necessar8 t "ini"i+e c"-actin-lanes. A *r" #rag s/all *e -r,i#e# $r !se in $inal s!r$ace $inis/ing. Miscellane!se7!i-"ent s/all *e -r-elle# *8 -ne!"atic0t8re ,e/icles.

211.. Tenolo0ia "e eectie

211..1. Generalitati

T/e Cntractr "a8 select t/e cnstr!ctin "et/# cnsi#ering eit/er -r#!ctin $ t/e"i)t!re in a central -lant $ t/e *atc/ r cntin!!s $lH t8-e r -r#!ctin $ t/e "i)t!re

in a tra,elling -lant.


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=r t/e s/!l#ers Hr5s *e$re -lacing t/e aggregate Hee#s an# grass n t/e area t *ec,ere# s/all *e c!t an# re",e# an# t/e s!*0gra#e -re-are# in a "anner a--r,e# *8t/e Engineer. T/e s/!l#ers s/all *e cnstr!cte# in la8ers $ nt "re t/an 1


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c"-ressin strengt/@

"ini"!" "i)ing ti"e t/at can -r,i#e s!$$icient /"geneit8 $ t/e "i)t!re.

Sa"-les s/all *e ta5en $r" t/e "i) #!ring t/e tests t c/ec5 t/e re7!ire# c/aracteristics

$ t/e "i)t!re c"-sitin as in s!*sectin 21


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T/e a,erage #ensit8 an# t/e #ensit8 t t/e *ase $ t/e c!rse s/all esta*lis/ t/e 7!alit8 $ t/ec"-actin H/ic/ "!st *e in accr#ance Hit/ t/e c"-actin #egree $r" -aragra-/ %.


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B. Meto" o# traellin0 )lant( >it in'sit rec


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c"-acte# *e$re t/e ce"ent setting ti"e starte# 'as -er ta*le 1( $r" t/e rec8cler r-a,ing "ac/ine -ass.

T/e e#ges $ t/e ce"ent sta*ili+e# c!rse s/all *e Hell c"-acte# tget/er Hit/ t/esta*ili+e# c!rse itsel$. T/e c"-actin $ t/e e#ges s/all *e "a#e as $llHs

a nn0,i*rating ra# rller s/all $irst *e !se# Hit/ a--r)i"atel8 1>3 $ its Hi#t/

n t/e ra# s/!l#er an# 2>3 n t/e sta*ili+e# c!rse@

t/e rlling cntin!es *ser,ing t/e 5nHn r!le eac/ ",e"ent $ rlling

e7!i-"ent tHar#s ra# a)is /a,ing 2< c" Hi#t/ r O Hi#t/ $ rller t8re. =r t/era# Hi#ening lane t/e Hi#t/ $ rller e7!i-"ents s/all crres-n# t t/e Hi#t/ $ra# lane.

T/e Cntractr is nt allHe# t carr8 !t ce"ent sta*ili+e# la8ers #!ring -eri#s $rain$all r snH nr is /e allHe# t carr8 !t s!c/ Hr5s a$ter t/ese -eri#s i$ t/e str"

Hater /as nt *een c"-letel8 #raine# !t an# t/e s!--rt la8er is nt in t/e cn#itin $s!--rting site tra$$ic Hit/!t r!tting r #e$r"ing.

T/e ce"ent0sta*ili+e# c!rse s/all nt *e cnstr!cte# at te"-erat!res *elH &C.

T/e !se $ $r+en nat!ral aggregates is -r/i*ite# an# t/e te"-erat!re $ t/e "i)e#"aterial s/all *e at least &C *e$re la8ing.

T/e la8ing $ t/e sta*ili+e# "aterial n *allast r t/er -re,i!sl8 lai# la8ers c,ere# Hit/snH r ice is als -r/i*ite#.

T/e Cntractr s/all -rtect t/e "i)t!re against $ree+ing H/ile /a!ling it #!ring a--r,e#cl# -eri#s. Lng #istance /a!ling an# tri- interr!-tins "!st *e a,i#e#.

A$ter t/e sta*ili+e# c!rse /as *een lai# an# -rtecte# *8 t/e *it!"in!s "e"*ranes!--le"entar8 -rtectin against $ree+ing /a+ar#s Hill *e i""e#iatel8 -r,i#e# *8 !singtar-a!lins r "ats t create a 30 c" t/ic5 statinar8 air c!s/in -reser,ing a "ini"!"te"-erat!re $ &C $r at least 9 #a8s -eri# a$ter t/e la8ing.

211..,. $rotectia Stratli

In r#er t a,i# Hater e,a-ratin t/e -ri"e cat s/all *e i""e#iatel8 a--lie# t -rtect

t/e $inis/e# s!r$ace.

T/e *it!"in!s e"!lsin s/all *e s-ra8e# i""e#iatel8 a$ter c"-actin H/en t/e la8er is$res/ an# Het.

Site tra$$ic $r t/e la8ing $ t/e *it!"in!s r ce"ent cncrete -a,e"ents Hill nt *eallHe# n t- $ t/e sta*ilise# aggregate $r a -eri# $ at least 9 #a8s $r" t/ecnstr!ctin #ate. N reg!lar tra$$ic Hill *e allHe# #irectl8 n t/e sta*ilise# c!rses.


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211.,. Cotroll "e calitate )entr rece)tie

211.,.1. Tolerante Geo!etrice

T/e t/ic5ness $ t/e c!rse $ nat!ral aggregates sta*ili+e# Hit/ ce"ent is as -er t/e-r,isins $ t/e #esign.

T/e t/ic5ness #e,iatin li"its are 01< "" an# 2< "" "eas!re# at t/e #esigne# crsssectin statins.

T/e t/ic5ness cntrl Hill *e "a#e *8 t-gra-/ical "et/#s.

T/e Hi#t/ tlerance $ t/e la8er $ nat!ral aggregates sta*ili+e# Hit/ ce"ent s/all *e asin#icate# in t/e #raHings.

T/e Hi#t/ #e,iatin li"its are 0


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a211 - strat de baza din ciment stabilizat.doc

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