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II£!PUBUCA SiOC!'QISTA ROMANIA. STANDARD DE ST'A''r .EIDl1'ilE:.O'FICIALA $TA,S 3349/1 .. 83 'Claliitlil;J:r(tSl altal1llflmerid II 3il InlVcuie~!,e : parlia! 5: TAS ilJ.9.1i'i9! ('.trnell.t ,co]N,rclc~ I H ;t 'O i i: li ( J. ~ dment :f>eT(llJliN: :qe}!.eH1:1!I1lI.¢ Sli'.liCiFIGA'li'IONS FOR WA'FEn P HE SC RJ PT IO NS : ro UI 't . L'~VA- UPEJlIIM'CJi.HI~H IlJlff AOGltlESSIVNlESS DEGR:FJE LUiATlON DU DE(;Ell.~ DE O[IPB;i'(EJlF,;HIiIR CtEnEHK EVALUATION !l.';\:GRESSIVf[E DEII/EAU - Af'PECCHBHOCTM BU,!lh1!: I II--------!.---------=------- ............... OONSIlLUJL NA'ilONAL P1!l:N'l'RU ~.!IWTA, ~'nTEHN'OLOGIE I NS TI ,T lV Tt lL SO .M AN I:.E S,l'AN,Ii),ARDIZ.t.,RE PBESC.IlIPfII IPENTRU ST:A.BILIIIEA GIlADUtm DB AGBESrVITATEA APE' ][,1,1 Pre2!entul standard fie, r.me"rurn sta,bilirea gradnlui de .agresivitat6a apelor. eare pot! veni In -ontaoe cu elementele gaUl OOI U; tr ncti il edil lt beton (llibeton jl)I'ill!Jlit, 1.1!..~ Prevederile Jlre~Clilt1l1ui. st{l"ud);i.nl lle HIPli.ro, in. toMe ea.tego:rine de 'OO:l1struc:~ii" cu ex.- cepJ"ia ,Iinena j<1.rilor hidroenergetiee ~i,1'unor cOl1stn.lc~H hi.dfiotehiJlice mij.8iygJ Ia CM'~l SG ap,l:ica, Pl'{'V("~l('li~e di.n S TA S 3S\ Il 9/ 2-, 8: l. 1.2.1 Pent,fllll'l!siglll"areo" du~bmtliltii elementelor ~~ conSLl'liilc~iilor, ill. runctie de :natl!lm ~i glnrli\~l ~,I;' agresivitatea alPei, esse 'obligIDltoriea.dojJlm.a'eIlI, in fasele de proioota\]['e~ii exeeutie ll. lUi'i.I';Ul1i1ot de protect..ie ;pri.rm:n~ ~j dupa eas de pfotecit,i!@ suplim.eDiood. oo'llformane:oce] A ., 1.2.2 p.eutI"u ea.. ~urile specbde,. sm,01li1i',ea,m:asmiiO'l; de prot_e(}~ie jpl'lliJlJam ~i d.np:[t, 00.2. de PM- too~itl BU)lUment'lllra se faee de cittre un i.nlSlti.uut de speei!ltrlit:ate. COlilfotm pfiezentuloJ s:t2lilldard J , ea.z.llIiri .sjpooia.mese co·usfderl, w:~,toa:tcle: ~ ,elernumtele~i cQnstrnc~me dill beton ]1IrecQ.mpril:n:at; ~ &pEl.! p.oo.z:lin(;i.,. in afura una! evennuale acgl'egiv i,t,i,tid!e deZfulcali:llimFe, gl'atli. deagresi· 'Vi.~te slaM pen,tru doni ssu lll.'I>i m'l1~temt.t;'lu[i de illlP'eaivibaw (wnfotml. t~boJ.ildllli.l), - temperatrn.raa.pei depa~eJ;ite filr'O; - pFe.'!iuoea apel depa!iie.1'jow1,100 MPa, (170 m ()o.(on;n~ 9.pW); - apa.al'e 0 !!&linitlLoo ridieata, a;>ctionea,71it sub p'resifin.e~i 6xilsta. oom,dit-ti d.e oon.OOII,· tmre.a sQ,l'Jl['iJlo:r prill eYa'pora,rf', - apa este implI.tiEicata ell snbstante oiFgat'lioo (uleiur,j". l'~idlJ'UFi :indl1str.iale etc.); - apa. 'CQl!l~ifie MdrQgel1 suUll.fi1,t i ~ orieare alEe ,sitU3i~iJiin 'oom ]3 1 proiootm.,rea, oonstrn(li~iei. se apTMj,a,.Z&M aeeaats reprezimoa un ca.·z·dooseb:it pFliniJril1p~J1ta sa, prm posibilita_ modilfieirii uUe- rioalle a.clirimia!tllllJli ape~ sau prill. :ni.velurile ridioot(l, n l@ 000l00ntmJieii ~mor sttruri. s aN iBl1llbg~:mte. A1PI'I)I)a:t de ; INSTUTtHtJL IROMAN DE STANDARDIZA!R,c Str, RotTIol.nr. 32-34 BUCURESTI Tole" ll,312 Cr;;ST II : ~ b( )T a;~ iv :!'fti(L I ~n j1J<1;2 RCllinlii In 1;fJ/i4; 1911'8; H)'f!,; :1'91S !Ii J[182 Oabbttdt'H ID .q0lH ; 1:983-00-01

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5/10/2018 STAS 3349 - 1 - 83 - slidepdf.com

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I I £ !PUBUCA S iOC! 'Q ISTAROMAN IA .

STANDARD DE ST'A''r

.EIDl1'ilE:.O'FICIALA $TA,S 3349/1 ..83

•'Claliitlil;J:r(tSl altal1llflmerid

II 3il

InlVcuie~!,e : parl ia!

5 : TAS ilJ.9.1i'i9!

('.trnell.t ,co]N,rclc~ IH ;t 'O i i: li ( J. ~ dment :f>eT(llJliN: :qe} ! .eH1:1!I1l I .¢

Sli'.liCiFIGA'li'IONS FOR WA'FEn PHESCRJPTIONS :roUI't. L'~VA- UPEJlIIM'CJi.HI~H IlJlffAOGltlESSIVNlESS DEGR:FJE LUiATlON DU DE(;Ell.~ DE O[IPB;i'(EJlF,;HIiIR CtEnEHK

EVALUATION !l.';\:GRESSIVf[E DEII/EAU - Af'PECCHBHOCTM BU,!lh1!: I

II--------!.---------=------- ...............-·

OONSIlLUJL NA'ilONAL

P1!l:N'l'RU ~.!IWTA,~'nTEHN'OLOGIE

INSTI,TlVTtlL SO.MAN

I:.ES,l'AN,Ii),ARDIZ.t.,RE

PBESC.IlIPfII IPENTRU ST:A.B ILI I IEAGIlADUtm DB AGBESrVITATEA APE'

][,1,1 Pre2!entul standard fie, r .m e " r u r n sta,bilirea gradnlui de .agresivitat6a apelor. eare pot!veni In -ontaoe cu elementele gaUlOOIU;trnctiiledillt beton (llibeton jl)I'ill!Jlit,

1.1!..~ Prevederile Jlre~Clilt1l1ui.st{l"ud);i.nl lle H I P l i . r o , in . toMe ea.tego:rine de 'OO:l1struc:~ii" cu ex . -cepJ"ia ,Ii n e n a j<1 .r ilor hidroenerge ti ee ~i,1'unor cOl1s tn . lc~H hi.dfiotehiJlice mij.8iygJ Ia CM'~l SG ap,l:ica,Pl'{'V("~l('li~e di.n STAS 3S\Il9/2-,8:l.

1.2.1 Pent,fllll'l!siglll"areo" du~bmtliltii elementelor ~~ conSLl'liilc~iilor, ill. runctie de :natl!lm ~iglnrli\~l ~,I;' agresivitatea alPei, esse 'obl igIDltoriea.dojJlm.a'eI l I , in fasele de proioota\][ 'e~i i exeeutiell. lUi'i.I';Ul1i1ot de protect..ie ;pri.rm:n~ ~j dupa eas de pfotecit, i !@ suplim.eDiood. oo'llformane:oce] A .,

1.2.2 p.eutI"u ea..~urile specbde,. sm ,01li 1i',e a ,m : asm iiO ' l; d e p ro t _e (}~ ie jpl'l l iJlJam ~i d.np:[t, 00.2. de PM -too~itl BU)lUment'lllra se faee de cittre un i.nlSlti.uut de speei!ltrlit:ate.

COlilfotm pf iezentu loJ s:t2lilldard J, ea.z.llIiri . s jpooia .mese co·usfder l , w:~, toa : t c le :

~ ,elernumtele~i cQnstrnc~me dill beton ]1 I recQ.mpr i l :n :at ;

~ &pE l.!p.oo.z: l in(;i . ,. in afura una! evennua le acgl 'egiv i , t, i ,t id!e deZfu lcal i : l l imFe, gl'atli. deagresi·'Vi.~te slaM pen,tru doni ssu lll.'I>i m'l1~temt.t;'lu[ide i l l lP'eaivibaw (wnfotml. t~boJ.ildllli.l),

- temperatrn.raa.pei depa~eJ;ite filr'O;

- pFe .'! iu oea apel depa!iie .1'jow1,100 MPa , (170 m ( )o .(on;n~ 9 . p W ) ;

- apa.al'e 0 !!&linitlLoo ridieata, a;>ctionea,71it sub p 're sifin .e ~i 6 xilsta . oom,dit-ti d.e oon.OOII,·tmre.a sQ,l'Jl['iJlo:rprill eYa'pora,rf',

- apa este implI.tiEicata ell snbstante oiFgat'lioo (uleiur,j". l '~idlJ'UFi :indl1str.iale etc.);

- apa. 'CQl!l~ifie MdrQgel1 s u U l l . f i 1 , t i

~ orieare alEe ,s i tU3i~iJiin 'oom ]3 1 proiootm.,rea, oonstrn(li~iei. se apTMj ,a , .Z&M aeeaatsr ep re zim o a u n c a .· z·d oo se b: it pFliniJril1p~J1ta sa, prm posibilita_ modilfieirii uUe-rioalle a.clirimia!tllllJli ape~ sau prill. :n i.v elu rile rid io ot(l, n l@ 000l00ntmJieii ~mor sttruri.s aN iB l1 llb g ~:m te .

A 1 P I'I )I )a :t d e ;

INSTUTtHtJL I ROMAN DE S T ANDARD IZ A! R, c

Str, RotTIol.nr. 32-34 BUCUREST ITole" ll,312 Cr;;ST II :

~ b( )T a;~ iv :! 'fti(L I ~n j1J<1;2

RCllinlii In 1;fJ/i4; 1911'8;H)'f!,; :1 '91S !Ii J[182

Oabbttdt'H ID .q0lH ;

1:983-00-01

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2 ST ..A.BILIBEA <GB4.DULUI DE AGBESIVI'TA TE A APEI

2.1 Na.tu:ro"~ igm;dIll a,gres.ivltA~a.pei se .Bllabilesc ecm.fofDll :@'revederu~rdin · ta,be1ul 1,l '1 l1 ,in d b 1 o o .WJ : id em ll e v 9, 1{ lQ ) 1'OO rm ! li xim~ a . 001'l.centm~iei ;a .. R en tu Ju i. & gF·e si v : il l_ r( egm tmU i . ill oodrOi ld eb erm :in \\rit o1 " · eie oh :8 1t e p a a.mplaa.moo:to:l obiea1;ivullul .D1 ; I i ll . : imed i am , lui. veeidtate. DQiQl.p rin ilp eo .if i:e uI o bio ot i: vu llJl.i. 'Ml'f tI sepwiOO1i63·! ' lA, (deuem,plu u.nitil.1ti C 'U : p f iOOe . ! i ' e ' obim iOO ) [S~

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l!IISUBI D.E I'ROTlIDTIE

,.4..1 E.sm'ile de WJlOtoo~iepl'imari se sta .bmeec in fIme~ile de _tum. ~l gradni (ilgres:iviti~ilap6i "ioonsmu b.preeiz.a,rearuma.toa!l'elor da.'oo:

- ti,pul de , e1..lnlIDtce sa VIi folosi;

~d!w.de hnpenn.ea:bilitate ceNt b~tonulu.i:;

~. va.loa;ma maxlim.i a :ra.portwllliAIC;

~ dor.ajral.minim de ellnent.

In. fI!lno~iede itijpul 6 i ID en :&mu i~ i ~PQrbul A to :UnpusJpnnproieet Ie, va precl%.a'001.-'tmlu m a,l'C a sa ;u c l a 8 R > betonwlli,.~inH:uJsoo.ma, d e, p re rv ed erile , u gle m en :t! air ilo r te hn i< le p ri:v in dt,stabilirea oo-mpo,ziI t ielbetontl[ 'Qii .

A.2 P,enlfm di~ritelea.greslvit:;l.ti,. cuexeept;la eelei Bllilfatice, .mJamile. de protee~ie prima.n\il!mt p:f'e(J(i~te:

in t.abelw.21",mJ; :pdvire m . al~~tiipuh;i de e im ,eDt .

in t:6oohd 8, eu . privboe [a OOtHHti i l e tehniee im,p:nse betonnlui.

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tedl.l~ea:tloZajulul &e CiJ i tucn. i1 V~ n d e ; l \ .1&%, III : fun<: !I~$ j~e ! l d l ' [ ~ . ' 1 1 1 \ ! 1 1 '1J!lilizat;

iI~zaju.l d.e cjmellt ad,l)p'l~t iHt viI n.ln:tl mll) de l~ ir.gjJn.~ pentr!! betalllcucl;: , ~r1:l1;~te, ~Jlccn v .3H) lcglm~pcnirll n,,:balld~ Mmpl!l,

se va resp'llut:aJ eu $lrie!<:I,e; hmiM i1ll"l'v~:rllt1i IHI:I~r(l , , 'aj.ll!lll"l'scr:lpOrhllm Ale : ,lucntbU:I.tEltrm bctonl;ll!Ji,la locl..1JId;i turnare, va eerespunde uclie,j ~:idr,1 de eel Il,uUtI '1 ell].

3 In ellz\I! ~o!Q~i~i Ild!!(,s1I1!uj de (.omU;j.1i de t!"ntNII<} ~¢[if!lo·~lO!C'Ll"Ic(l !Se ad,n~lea:doplnre! ll I 'mor dOI !i3( j!' ; de cimenl

iI! '!! '~~:i,"':lll1'1))e~l'f!' r '~ r . ul t! l .t e ,d in t~ b ~ l,p e b~ o le 1 '. ,g le m . ei ll t! iI I ! lp '! ld ~ ~ 11 ~ ! n ! e u , !W l iz 1l ~ u , m u i In1>~lblt~, .pocla:U'i:t!1\\c.

A.4 tvm.suIile de proteetle i 'UpUr l l en t a r a se a d . I Y i d ; t " \ . obUgatoI'iU in ~ .zu l gm(bli~ui. de a.gresivi-ta;te :foa,it"" .i.ntensa iji se S@a,OHBSt. de c!i.tr@un insti.tut {leospoaia, li ' t8 , te. Fae rexoopt;ie de laaceastl'j,· prevedeee situatiilc a.ri\.tate in taberu~ 4pent ru . agI'e-sivita;tea s;ulfg, t l .e! t foo.r , te : i l l ten sill"~zu[ J[ ,~t II.

AJ . i Cl;>Jlllll?it d eo on t to \. l'1 ,t ;e l') l'I ,( ! l~ lB - e 't ri e. a. f o lo s iL i t, e a a ~o s l~ " p ~ ·t "i pa .r al 'o o "e~o a. n e1o l' C',),F(, v tnm contact C'n a.pe atzil'esivetrebuie sa {lorespunda !I?re.vederi~or STAS 88l!'9/1I.-80. tn easulagres: irv:~ta; t ii sa.tn.i1o:r de amOUi l l ! . ~ , i .fi n g re s iv iU i ;\< ii { llx iz ,ilo l'a .le a li]lli; u tili~ a re a. OO J :lu ~ Ii se v a facepcbazli, d@ l~@gtemQnt,i'i.ri8pe~i ile sau cu avizul unui instlitut d6 speciali.ta.ee ..

A.6 . Groslll1l.C<'1s.tll'il.tului dea,ootmrire e n be to n ~ a .ll~ ma.lan :i.l! lr s itlL "1te 0 01 mal a .p rO i iD l [ )G de bt~l.€l.. '\ .]lUaa. am;tei(etri.@ri. S : :Lu . a .1~ ru iL~u l. '. i lie reipl1rij[~i.e eite. \ iIu:llep,endent ae na tun:a , "l'lgradal agreslvt-tll;~i.i., va fil egtda (ell abate;ri. de lO_3;'\..±2,.!}mm], ,CUteeamai maredtntre valertle :

d.i.9.IDetruI a;rrn!ttudl !i l lell(;).zisteO'tfi, + 10 IDlll;

1,20 X m~rjm@a m~loll::im~a gnllmdelot agrega~e'b;,

gr -Qs .imM pr e ;v ! \z u li l. pi~.ifir(>gll ie:t! l11ent@riIe in v i,g oru ro p en trll m ed ii. fio o,g rC i'l1iv @ ~sporit iteu :W Il1iIDi. pe-ntll'li gradl'!:i de agt~g:iv ltatesla.b~, reS[I'Mti.v 15mm pentru gmd;~I~ , ( Ie.

agre.'3ivitate i .ntensa. ~i ioane ilJ itenB l'b . . _ .

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A .7 P 'em .tru gmd.ele 'dfllagre .smmw inteD.~ :!!aJU Wairte iD.teD.d., l ' I l ! ,de,plmden.t deb&tu tae . ce s ·t e r n , s.erecomandi evirta.rm, muclli:ilor vii., adoptiudll~fle rnoodrt.

11.8 P,entrn betoanele Import mu,de egalkaree vot adopta. dozaje:1aminime de cimeJ1lt ,I Ireva .zl l : te m ta.1belul 5t b1d~em.den t , e m na tu ra . a.goosivi:hitit

200'

200

Na i fW ' ! I . t1 ' C 8J I !l it at e a · ad !' lQ f Q l ul!", )IIl'8J!IlDI'~])d~jj1iJiIf

10 0 ' L I l i O

180.

I'

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ME1.'ODE DE AN.AhlZA

B.t DeOOtnJ . if iI~ r e a. e on ,oo f i. tm~ i e J iOfi.i1ot wMiI'l iHmll . t (ReOr) :~thidroxU (OH-)

OonfOFllfl S'l'AS 63)63·'16;,

18.2 D~il\a;l;~ (;QfiOO'Il:t\'a~iei ionHo'l.' de bid.rl)geD (pI!)

B.2.1 1 m 03iZ1l1 apelon" esre 01[1. limit px:ea tulburi. saUl oo'Lomte se 'm 1010$i m,et .od1a.oolorimetdca. .

tn aoest soop, i:nltl'"O rntpSUm m . : i . c l t de port<eIan s@toomi 10 em:).... 15 e.! de a.pfi. IFfse 1'erificit ·pR-'ul e11 l1.irtie &loU 801ubiJe indicator.

B.2.2 .I n easul apelor tu1buri , ooiomte, sau a tam.c i elnd ascere op'roo-izie mki . l i§ . "detemI ina 'OO( . \se bee pe(l,'lile lPote .1 i l~ . iometr loa.

Dete· r :mina; fWI pote"!l~lomet~~c;)i,a VH~u.1u:isa efeem,~~ Q U pH·m.etru in eo~nntt:a.toeu presm:iptme de folosiil'>6t apa.mtului. etoo~iti. a-pamtulu.:ii v a . : fi de + O!05uniti,~~ pH.

B .a Dat6m:timm,lI 'ea wneeIltra.~lei debi.oJ:id. deeRJ'b;(}ll libel' (COs)

Co:rn.(t)rm STAS 326J~'6l..

:8.,4 DeOOrmt i l l l l t fm o o : n o o n . t t ; J . . t i e i : iOI"itlbd ,lIe eale iw. . (Ca:-~')

Conkmn S'f.lS 366,2·62.

13.5 De te : lm .bmrea 1~1lc :e! l t :mt iel de i!)ll~de ,eful ' (on-)

(Jon fO"nu S'r.AS 8663~70.

8,6 Detenn fnareao.o :n .ee :Dl tm '1 i ie i de .l(JDi de sutta.t (S~ : - ) I

Conform STA,S ·8601,11 ) . .

B .7 D ew rm ::iina re a . oonoon tJ : 'a 4r i~ ] < lle imU . d.ewagnwo (Kgtt)

Oontonn STAS 6674-$2,. '

B.a D eb erm .i.o fl lN Q . c oa oo :o :tm tie i de toni Q .e am.onill I N . B , . " " ) fji .B i i l oDn luh l Q;ZQta,t (NO;).

Con.focm STAS 632g...~1 ,~i: S'ilAS 89MlflAl .

.B.g" Detef:Ulm!1l.l'ea saUnit=l~ii.totale

Sallini.t.atea,totali se expifimii, p:rim: Iiezidv;u[ filtra.bil. ,~i ee d.etenniwt oom:form

S " r A S9'187 - 7 3 (m . e ll od a .e v a .p ;m rl lr lO .

:8..1 0 ' Deter:minarea oonoontm~i.ei de hidro~D nlfumt (~S)

oQQ ·Q . fom l S ~ I A S 751(J. .6~"

B.ll Dewnulruvre0.ooDl~ml:lWtl l l i de Sllbstan.1iO ol',gamoo

{'ioafoml STASS002·611.

E.12 Determifi,a"re;ll.oollltl.~'Iltill.lli de mlo\l ;edi in auspensie

C IlItl! . ID hl! l S T A S 6 95 3;·6 4

OiBSEHVATIE - I)eterrnillu.jle de la pd. a.t: .8..:2; :B .9: ; : B.8 ~. EI..{I $e,dllC"~n~!u;!I,p'e t_la, Im:edbrl dllll",iprd e'lmJ[~ probe:lQ£ de qll. -

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S TA S 8349 1 1 -S S -8-

18,13 Datermin.M'-,ea dluri.Wi,tiL

C o nfo rn n S 'J il1 .\S ,(H ~ 2 1B -7 6.,.

B.14 1Bulethlllll , a , . e i l o l l f l . , l i z l 1 l

Bulettnnl (Ie amaJIzii.ooimi.ea, a apei va Clll!;n:lude , c e J . p!l~in u rm .a ,t oo re .i.e s po oi. H ea tI i. :

tempera. tu l 'a , ape!, I D . grade Oelsius,~spoo tt il l {C ' l: iloa . :r ea ,miMm! prezem,.'lia,»uJelor dega~e);.

indicele o.onQentra~iei i C U : : i i l I D . O I ' d.c llidooge'lnl (pH);

O O tilt iin lltu l d e itn lill H O O ;-, 1 .0 m ilig ram e pe e doo im .e tm ou b i

du.l.'itafitk1., ill emdege: rmane i

col'itt .in lltu l de ion i OH ~ , in mU ~mm e pe dOOi':I ! l le ' tJ:11ub i

ooaoontmtia. biGl'tidul!:ui ,de carbon l ibel" ( :cn~), ill. miUgromJ~ ~e dJ'lcim,etru, 'Oub;

' oont ; .mn:tu lde bl lu: i r i le calciu {ea.~+.hin mi ID l g r ame p e d e c .Im .e t .r n . c ub :

oo l1"~ i~ l l! l t1 l1. e c lo ru . r i: (ClI . i J ', in rnUigl '2bme :p c d e c.im e :~m eub ;

M:rn~~l1l!lmle, suHa/l,i {SO~-h in mUigm-me: pe decimetm cub;wnt inu tu l d0 ioni. de lUl 'bgnezii iUl (Mg,H ')J In m iH gm ,m e :pe ' t ioo : i lUe~ru cub;

eQn~lnillt1]l~d~· i o n i de a : m O ! ) l il l l (NIl!) :}icle i o n i deaz@tat (NO; h 1 1 1 , l11il:~gmJ'l1epe deoimetru cub,

contd llutUJ de Jili.drogen Bulfllrat ce~)1 ' lnm iligrame pc dseimeten O\llb j

~idlill!lla, 105"C (saU:n i .mte tot~l~ )!!umiligl'ame. pe declmetru 6U1b;

con t ii n .l Jl tn l <desu .hs tan1ie ~rll 'g8miMi'expir i tna. t I _ ) l i m Wrl;SiJlwn.l ' li e p~ rman~na ,t i d e ' po ta ah lICMrn04,i'n mlllgrame pe decimetru cubj'

< : on e in : u u t'u ld e . ru a te rH in suspensie, in lllliligrame p e d ee tm etra cub.

E!abm"nt Ile: ~NSDT'(ITUL €:EN 'FR. tL I llE.CJ;;RCE.1F:AD.E,

PROI~tT.mfl~1 :DmEt-~' lUU!!lNCI)N.smUC'fJl·~11UUtlltill de ¢~~Ilri til CODsttill.cttl ~I econominCO]J,~.!x!Jelm(l1'

Re ; s 'pOO '5: J b nL [ ! pl'oieeL'IIli[J t: ll1iJg, $tll.liw. Elilescl!

. ehtm, 1JI.D!ll'~r~'~'Q! iD! ! , . F l. o .n c a W 'a f ihm

H~d.lldat {in~: In~dtll'ul"milll dJeSi'Il!'!.d,udll!llle

5" ' I1 ' \1 .o : Iul ,ooDsi : tThe l ,l ! .. J1!U1tctlale cle COlInstru ~ILI :,1 CIl :ol ruomic

1{l]'e.~U~i'A

lnB.P,,"~hl"!l M:1il'll£OlllIIdiJ. : : . . . . . _ _ - - - - ~ ~ - - - - - ~ - - - - - - - ' - - - - - - - - - - - - - ~ I,

~'@laoo:r8WiI :- IDI'Sitltnt1JJ1l/oo;l~o~l ib , td l rate l rg ie l )

~In ~ titu tu l d!e s tud :ili ~ :lD 'O 'le .c tili Illdl;oenuge~

- l\I [t nj st ':~ !l1 [ ; @ n ! > w ! H : t ii l o .r I!'JJdiil:S;U\ia]S:- t.!lLb~!'~'torll!cefltr.al

- r ;OOl~]i li :( i] Pflpnlar .!ll .MmjiclJijllllui BUCl11'~~ -La-~ o:t! 1t ,p :fl ,l l . ;: " . . tta!.