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EZVI'ORCED CCTdC';;3Ti~ P11VEh;SENT
<br />2. REIPa'FG?C.E~ COiJCIi~,i'E I'A.?l.'~::~~~NT: Upon the prepared sub~;rade, a.s herein specified,
<br />there shall 'oe laid a reinforced concrete pavement, true to line, vrade ancA
<br />cambre shovm on cross section, and the thickness shovan on the plans or p.roposal~
<br />(a) CE1rNT: Tire cement used. in concrete shall be of approved brann. and shall.
<br />meet the rer1uirements oi' the Tentative Specifications for I±_ir-Entraining Portla:.c
<br />Cement for Concrete Pavements of the A•nerican Societe for T:estin~.%;Iaterials,
<br />Designation C 175 (T~pe L?) . The tensile strength regizirernents shall ~;ove.rn.
<br />UV11en the cement is delivered in pac'_ca;~es the name anc'~ brand of 'the ;^,arrafacturer
<br />o.f +,'ne cement and ,the type shall be p].ainl,,~ ma.?^?red thereon. n, sack of cement
<br />shall contain 9!~ pounds and a barrel of cement sha.l.l. consist of 376 pounds net.
<br />(b) SAND: The sand used for cencrette shalj. be na.t:zr.al s«nd coml~osec'a of clean,
<br />hr<rd, durable; uncoated. p~!rticles of stone, -~re11 ~ra.ded fro~i coarse to fine, free
<br />from lwnps of cla~r anti a.ll org~~nic mat-te;r. Tt shall shorn not over ~ los.~ on
<br />decantation bar; ~aeigr~t: It shall be uniformly grr.ce,3. from tl~ia-t ~~•rhich tirill pass
<br />a P~1o. ~ sieve to `that ?~rh~ cn zroill not p~~~ss ~~ 11ro~ 100 sieve anal at lezst one-th:i~•d
<br />(1~3) of the ma.t,erial shall sue retained upon a iJO. 3C sieve.
<br />(c) COARSE 1lGGP:~u.hT.~,: The coarse ag~,re;ate sliall consist of crushed limestone or
<br />air-cooled blast furnace slag having clean, hard, strong, durable and t~ncoa ted
<br />particles. Tt sha11 be free from an injur5_ous amount of soft, friable, thin,
<br />elongated or lamin~:.ted .E~a~•ticles or nieces, allcaliy orr~:an:i.c or other deleterious
<br />matter. The maximum percentages of such deleterious substances shall not exceed
<br />ljj tnr'nich ca.n 'oe removed by deca.n-tation ilor more than 5i~, in total, of coal, clad
<br />lumps, soft fra~;rnents, ali~ali, fria.'ole or lamir.~~ted pieces.
<br />Ph,ysica.l Properties: Tlie percentage of hear to be not over 6' for limestone
<br />or 15J for slag; rnodifie;d abrasion loss to be no-t over 21.}~~' for both limestone
<br />and slag.
<br />Soundness : T'•~her_ tested in accordance zrr~th the Tentative T:iethod of Test or
<br />Soundness of 1'l~:grcgates by Use of Sodium Sulfate, i:nerica.n Society for Testing
<br />1t,~Ia.terials Designation C ~8, the z~:feighted, avera.e loss in five c;,~cles shall not
<br />exceed 12~ for both limestone a.nc.~ slag.
<br />Size: Coarse ag;;reoate shall be mechauic~lly eras?zed and screened. into
<br />A1o. 3 and P1o. Zr sizes, Chao State Hi~;h~^~ra.-jT S;~ecificatior_s, ~~.n~ coznUinec, '~jr
<br />tirrei;?xing each size :into the ba.~tch separately Zrrith size T~Io. !~ having a ratio o:c
<br />from 35o to SrJjo of tb.e total. The v~~ei~;ht of slag per •cubic foot, in compacted
<br />a~~regate, shall not be less than 65 pounds.
<br />(d) T~TX: Concrete shaJ_1 consist' of a mixture of Air-~a'ntraining Portland Cement,
<br />coarse az~regate, sand and ~r~ater, proportioned in accordance ~rrith the r. aquire-
<br />ments of this specification.
<br />Cement shall be measured by ~areight and shall be e~reis;hed. on a balance or
<br />scale separate from those used to tireigh the other• ingredients. A.g~,rega.tes shall
<br />be measured bar vreight. Latch :=reights shall be b~.sed on surface driecA materials
<br />and 'shall be corrected to take ir?to account -tne z~rei„ht of surface T~~ra~te.r contained
<br />i_n the agLregates. ~ !'rater sha.l7. be measured by volurte~ or ~~~rei~,ht. Total or maximum
<br />water shall be cons:idereca as that includ-ink; adc'Aed inrater and absorbed (surface)
<br />ifrater in aGgregates .
<br />Concrete shall be Class ~~D" - Oh~.o State ITi~'iti•ra~l Specifications and shall
<br />.~ be proportioned as .follows:
<br />CP-?_
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