|
PEINFORCED COldC'"~~~TL PA.VEI:EHT
<br />2. l~E:CraFO'Cisi~ CCiidCl~ TE P~~T.~^ENr: Upon the prepared sub~;rad.e, as heY•ein specified,
<br />there shall 'ae laid a reinforced concrete paver:Ient, true to line, grade a.nd.
<br />ca.mbre shotrll o?z cross section, and the thickness shoF,m. on the ~-~la.ns ar proposal.
<br />(a) C~?`E~1T: The cement used in concrete sha11 be of approved branii and shall
<br />meet the x'erl4~.ire.nents of the Tentative Specifications for l~.ir-Entraining : ortland
<br />Ge,:tent fo:~~ Concrete P<~ver~lents of the ~merica.n Soc iet~,% for TestinC r:Iate.rials,
<br />Designation C 17> (Type l~'~) . The tensile strength racl,uirements shall ~ove.r. n,
<br />~aJllen the ce:ttent is delivered in packages the nai~e and brand of the :~tanufacturcr
<br />of the cement and the tj~e shall be plainly m~arlod -thereon. ~ sacl: of cement
<br />sha1J. contain 911 pounds .~.nd a. barrel of celnent shall consist of 376 pounds neL~
<br />(b) SI~TvD: The sand used for concrete shall be natur•a1 sa.ncl composed of clean,
<br />riard, durable, uncoated n~~rt~_c;l~~s of stone, -~rel1 ~x•aded from Coarse to fine, ir•e=
<br />from lwrps of clay n._1c1 a'Ll orgc:nic matter. 1t shall shot~r not over L1~ lcss on
<br />d.ecantr.tion by ~~refht. Tt sha.ll be un~.iorlnlj graded. from that t~~zich Jri~.l. pass
<br />a No. 1~ sieve 'to tYta.'c t~~inich t^rilJ_ ':lot pass a loo. 100 Sieve and cat least one-~th:i-rd
<br />(1~3) of t11e mater_a.l shall be ~~•etained upon a Pdo. 30 s:i.eve~
<br />(c) CO.F1F?SE RGGP~C~.~TJ : The coarse rlg~re~;ate sh«ll collsis't oa' crusl~~ed limestone or
<br />air cooled blast furnace slag having clean, h,zrd., strop;, durable anu. ur~c:ated
<br />particles. It shall be free from an injurious amoilnt of soft, fr~abJ.e; thin,
<br />elor_gated or laminated r?ar. titles or j~ieces, alkali, o-rg:tnic or o+,l~er de'le',ex:~.,~nzs
<br />ma+,';;er. The ma.~~i~rlum percentages o:F such deleterious substances rshal'w not FxcF•ed
<br />1j~ t~ahich can be rernovec: b~T decantation nor more trla.n, ~~~', in total, of coal, clay
<br />lu!nps, soft i'ragments, a:l:~a..li, fria'ole or• 1ultt~iil^ted. ;?feces.
<br />Physical Properties : The percenta.~e of t~rear to be not over 6' for limes co e
<br />or 15%' foz^ slagg; modified nUrasion. loss to be no-t over 211;' fo'r both limestone
<br />and slag,
<br />Soundness : ~rJhen tested in a.r..cal~•dar._ce with the Tentative 3~~iethod of Test for
<br />Soundness oi' Ag~;re~;a.tec; by~ Use of Sodium SuJ.fate, !1me.ric<?.n Socie'ty Tor Testing
<br />L~4aterials Designation C ~3~, the Freighted, average loss in five cycles shall i10t
<br />exceed 12~ for both 1~mes•tone a.nd slag.
<br />Size: Coarse a~~regate shall be mechanically crushed. and. screened into
<br />A?o, 3 a.nd No. ~~ sizes, Ohio State Hilhvra.y Specifications, r3.nd combined 'oy
<br />~rei~;~~ing each size into the batch separately vrith size IJo. ~ hav~_ng a. r?t:io of
<br />from 35 to ~0 ~ of tiie total. The t,~,~ight of slag pe'r' 'cubic foot, in compc..cted
<br />aggregate, shall not be less than 65 pounds.
<br />(d) ~"iX: Concrete sha.ll_ consist' of a mixture of Aix•-Entr.;ninir~g Pot°tlancl Convent,
<br />coarse a~;;:.regate, sand grid grater, proportioned in accords~ncc t-ritl: the req~a.ire-
<br />m~ants of this sl:eciffcatiotl.
<br />Cement sha11 be measured by weight and shall be ~^reigl.ed on a bzlance or
<br />scale separate from those used to Freigh the other ingrF~dients. ~~;~rega.tes s11a.11
<br />be measured by ;weight. }?etch .~reights si1a11 'be bt,sed on Surface dried m?~terials
<br />and sha11 be corrected to take into account the Freiht of surface trra~ter cont.~.ined
<br />i_n trie aggregates. ~ "later sha.1J. be measured. by volurte or ~;t~ei~ht. Total or m~~:m~.?~
<br />v~rater sh?11 be considered a.s that includ.ine added Frelter and absorbed (surface)
<br />avatar in aggregates.
<br />Concrete shall be Class ~~U" -Ohio State High~~~ra;,r Specifications a.nd shall
<br />be proportioned as follo~rrs
<br />CP-2
<br />
|