Roller-Compacted. HW7W-zPrrNI[;;~kZ*?{/!E)RCr-*p^L5?ooo*}X!$VbA@bK>qjV)(2&Go%fn. T RCC uses no forms, requires no conventional finishing, and needs no dowels or reinforcing steel, making it an economical choice. This document provides a guideline specification useful for developing project specifications for roller compacted concrete (RCC) as an exposed RCC pavement surface, that may or may not be diamond ground for smoothness and/or texture. /n%t"5(D-LO Roller-Compacted Concrete Pavements as Exposed Wearing Surface Version 1.2 - September 4, 2014 . h6ZPleTE/QNI3qe+Z(%)R By using our site, you agree to our collection of information through the use of cookies. 0 #jr? It is widely used in mortar concrete . The growth of roller-compacted concrete pavement used in different regions is impeded by concerns regarding its compatibility with domestic materials, environmental conditions and local restrictions. 7[J+j"P*m,abD9i^qgooE4#b)XLmm$F3k6Rj;`DMs[lh2bsphf2\(a"!0A8S$ur(2Y;.ILWjC 301 Mission Dr. Unit 571 . ,:\10=dP)p6u!NJ]kRMC]tdPja;FsIolgOW[NBG'^`0@S?5_&klWVAOZTs1t9]ZR2 :bK$'Ckgai/XNk#KQll8]kKc>)5JI)E Complex computer generated thermal analyses help design engineers with understanding the situation that lead to . Roller compacted concrete (RCC) is a different type of concrete that is dryer than conventional concrete and must be compacted after placement like hot mix asphalt (HMA) or soils. 0000437301 00000 n U'Ha&TJ0tZ/>7kqbtMO\WF_FN9.tGXX^oXQ=agEB+3bc:X9V,p3ZI7j(.K27OT7KN 0000004431 00000 n Here is a quick description and cover image of Roller Compacted Concrete Dams book. One of the biggest benefits of RCC pavement is it can be constructed more cost-effectively and quickly than traditional concrete or any other asphalt pavements. '`3a]9&(^c,UJUJP229aP.d#3,e'UZBq0:[/6paM4!qScBUFKI+g[bSA54i1gd\eJ Roller-compacted concrete (RCC) is a relatively stiff or zero slump concrete mixture that is compacted by vibratory rollers. Roller-Compacted Concrete Dams PDF book is popular Technology & Engineering book written by CIGB ICOLD. 0000024116 00000 n 0000005364 00000 n Track Citation. Aj!PSdag>ke?IY*))8cdK(@PD>ICn7hH!c^W6t)^:?8I9AUM&g06*a\g-.j"9)Ts) 8 DEPARTMENTS OF THE ARMY AND THE AIR FORCE TECHNICAL MANUAL, Partial Replacement of Aggregate in Roller Compacted Concrete by Demolished Aggregate, Concrete Pavement Design, Construction, and Performance, Effect of Using Porcelanite as Partial Replacement of Fine Aggregate on Roller Compacted Concrete with Different Curing Methods, Assessing the Effect of Using Porcelanite on Compressive Strength of Roller Compacted Concrete, AC 150/5370-10F, STANDARDS FOR SPECIFYING CONSTRUCTION OF AIRPORTS, 30 September 2011, Construction of Roller Compacted Concrete Dam in Malaysia: A Case Study at Batu Hampar Dam, Subject: Standards for Specifying Construction of Airports, EAF Slag Aggregate in Roller-Compacted Concrete Pavement: Effects of Delay in Compaction, Reducing susceptibility of flexible pavements to moisture induced damage through superior compaction technology, Design and Construction of Concrete Roads, Fibre-reinforced roller-compacted concrete transport pavements. 0000004517 00000 n _WmJ>c)^_qeR35+'^["u;oOjZ/l%!O-DjQe6fH/@MRo>E6LN`1? *ll/1n+@?=KV+MdjRA2+(5YEK_.fFnC(42%Q% 0000002558 00000 n a\G. 0000001614 00000 n the iv international symposium on roller compacted concrete dams madrid spain 1719 november 2003, it ends stirring creature one of the favored book rcc dams roller compacted concrete dams proceedings of the iv international symposium on roller compacted concrete dams madrid spain 1719 november 2003 collections that we have. Ames, IA 50011, Copyright 1995-2021 The test principle is to measure the time for the concrete to be consolidated by vibrating in a cylindrically shaped mold. Roller-Compacted Concrete Pavement . 0000023773 00000 n The material prepared as a dry concrete is transported by dump trucks to the manufacturing laid in layers by grader or similar construction equipment and the compaction . RCC has the same basic ingredient as conventional concrete: cement, water, and aggregates, such as gravel or crushed stone. The standards contained in this advisory circular (AC) relate to materials and methods used for the construction on airports. Roller-compacted concrete (RCC) is a special mixture of controlled, dense-graded aggregates, portland cement and possibly pozzolans (fly ash), mixed with just enough quantity of water so that it could self-stand when paved using either a slip-form paver (without needle vibrators) or asphalt paver. Results show that using (5) % porcelanite improved the results of UPV and Voids volume of Roller-Compacted Concrete (with air curing) as compared with reference Roller-Compacted Concrete (with permanent water curing) by percentages ranging from(3.6 to 28.9)% and (-8 to-15.5)% respectively. Roller-Compacted Concrete Pavement RCC mixtures require compaction with the use of vibratory, tamper bar screeds, and typically but not always with either static or vibratory rollers to achieve a target density. Roller Compacted Concrete: Field Evaluation and Mixture Optimization, ARMY TM 5-822-7 AIR FORCE AFM 88-6, Chap. The Proctor test assessed the optimum moisture content of mixtures at various time after mixing completion (i.e., 0, 15, 30, 60, and 90 min). Footing is laid on PCC. [MO9@$ZqBuEER@K+S;1_g\Z:8=o RCC has similar strength prop- erties and consists of the same basic ingredients as conventional concretewell-graded aggregates, cementitious materials, and waterbut has different mixture proportions. %PDF-1.3 It is placed in layers of approximate thickness of 20cm to 30cm each. General Provisions 1.1 Description.Roller-Compacted Concrete (RCC) shall consist of aggregate, portland cement, possibly other supplementary cementing materials (fly ash, slag and silica fume) and water. 0nGU7jA&*@>3,Z$09-NrP>"-J_4>PC^ig3nSV%Y/\A-$V_g!M'aq^:tVf^*)'oVLCDjeG["?%5,8Ck6\VKd\ZqC(Z;$0FbR;Uu#m$nNH[D`l07^7dge5@IXV, Definition ACI 207.5R-89 defines roller compacted concrete (RCC) as concrete compacted by roller compaction. Iowa State University of Science and Technology !UN)&YHH?"3G#(!(h'lBJ3e[=#pP['0'FIgTF%? s71=`&aLBB(lb!UG46YGYOmrAObg:)3jk(u6Wn_g^IMlXKIY-&V'QikL"/;t7m(4U^)q,< Share. 0000001713 00000 n RCC - Materials . 800-433-1487. helpdesk@ezpdh.com . Keywords: roller-compacted concrete, pavement, properties, materials, durability. (PDF) USE OF ROLLER COMPACTED CONCRETE IN DAMS USE OF ROLLER COMPACTED CONCRETE IN DAMS Authors: Joygopal Jena GITA Autonomous College Bhubaneswar Abstract The paper presents the. . nE5+[hHfTN=6Th[iVH.Bl2"M1S3Bfb8AADJd]_6Rl+bgD7!M+Q7\iL17=5j/)Xl3$ 6 The main objective of this research was to develop high-performance Roller Compacted Concrete (RCC) with enhanced solid skeleton to secure greater workability, mechanical properties, and frost durability. You can download the paper by clicking the button above. trailer <<1EF4DF54299E42EF9D3B6AC619207E16>]>> startxref 0 %%EOF 62 0 obj <>stream All sales are on an"AS IS" and"WITH ALL FAULTS " Right to Inspect and Reject. LQ,"4r^YBaWL5dV>@*]Uotk(t^4Hi#>CPZA#Q:-6Sp^&tLu_Ch/Rc6&JmT+4VH>d7 Fe$^h,TXSF"eJ8-#_)coA8OjKJK18%D&nSC`E6Q52H4F8a]uajj5eD-9>Prg16m]D RCC is a zero-slump concrete consisting of well-graded aggregate, cement and water. Roller Compacted Concrete Dams is written by famous author CIGB ICOLD and Ready to Download in ePUB, PDF or Kindle formats. 0000010923 00000 n Roller-compacted concrete (RCC) gets its name from the heavy vibratory steel drum and rubber-tired rollers used to compact it into its final form. l0|a(idT z, Roller compacted concrete (RCC) is discussed in this special technical publication for the first time. The material has traditionally been produced in twin shaft horizontal pug mills located on the jobsite and delivered to the paver in dump trucks. %%Bb/Fu*9!9+I>'?EUi:&MTXPoKm,+>FY!0Mb@-ljZn1$/IckucIad\C0#&%)Z?Li TQeM? Hb```f``y @Q0om25Dknf>K%V1UfC]g&y&wlZloj:Vet6[1[)tN`p'VYTrRDSm/|;wv{`}n>}?{Tc`l`w21Z'S ShZrmH,b]AI$f-!!NI:4rD4cGpWWlDr!k\O]fj'o&!0F'Mp? 0000425604 00000 n 0000002514 00000 n Roller-Compacted Concrete Pavement Ezekiel Enterprises, LLC . 0000437182 00000 n 5 0 obj hSI**@&/YV-\L9['Z_LFdftbp7[dk*FoQ[aDhN"alc0Vs#"m6cH:E'AJO6N%XG8e" The face. 50 0 obj << /Linearized 1 /O 52 /H [ 1260 427 ] /L 120655 /E 50588 /N 8 /T 119537 >> endobj xref 50 42 0000000016 00000 n 0000001187 00000 n 0000001687 00000 n 0000001894 00000 n 0000002085 00000 n 0000002124 00000 n 0000016218 00000 n 0000016392 00000 n 0000016620 00000 n 0000017840 00000 n 0000018301 00000 n 0000018370 00000 n 0000018392 00000 n 0000019558 00000 n 0000019579 00000 n 0000020607 00000 n 0000020628 00000 n 0000021646 00000 n 0000021667 00000 n 0000022629 00000 n 0000022650 00000 n 0000023704 00000 n 0000024250 00000 n 0000024467 00000 n 0000025359 00000 n 0000025580 00000 n 0000025848 00000 n 0000026334 00000 n 0000027553 00000 n 0000041920 00000 n 0000042151 00000 n 0000042173 00000 n 0000043282 00000 n 0000043304 00000 n 0000044464 00000 n 0000044486 00000 n 0000045770 00000 n 0000045848 00000 n 0000045925 00000 n 0000049312 00000 n 0000001260 00000 n 0000001666 00000 n trailer << /Size 92 /Info 48 0 R /Root 51 0 R /Prev 119527 /ID[<19075605017548f4e3661727e37736b8>] >> startxref 0 %%EOF 51 0 obj << /Type /Catalog /Pages 49 0 R /Metadata 47 0 R >> endobj 90 0 obj << /S 241 /Filter /FlateDecode /Length 91 0 R >> stream ;TL00Qsf4n;rq% Article Metrics. A study was conducted to investigate the effects of lapses of time between lifts on shear, tensile, and bond strengths of an RCC structure. 13 0 obj <> endobj xref 13 50 0000000016 00000 n *`D0^BZ6%4J$:jqsN Based on current research and best practices, the guide describes RCC and how it works as a paving material, especially compared to concrete pavement, as well as its common used and its benefits and potential limitations compared to other paving materials. 1.3History 1.4Advantages and disadvantages 1.5Performance of RCC dams Chapter 2Notation and definitions, p. 9 2.1Notation 2.2Definitions Chapter 3Materials and mixture proportioning for roller-compacted concrete, p. 9 3.1General 3.2Materials 3.3Mixture proportioning . Hence, the present ICOLD Bulletin 177 supersedes ICOLD Bulletin 126 ('Roller-compacted concrete dams - State of . Materials and Methods The RCC consists of the same ingredients as conventional concrete does, but it has a higher percentage of fine aggregates and is stiff enough to remain stable under. L.O)QD\(AJBEBgsYb2UVfZEY`==V7aNd^dJrC%%c1DkB,HA]f),l8.cGo@1,35E8; RC Concrete 19 105 260 946 1254 5.4 Conv. It has traditionally been used for pavements carrying heavy loads in low-speed areas because of its relatively course surface. 204 Parks Library The optimum water content and maximum dry density of RCCP experience almost no effect from the delay in compaction. L$:&0eEDN$UY%>EnS>FaCt\#D:6Lf"4^e_7 r%XUc8j7P&a,)aV-efNrXJ>gS]@qn33j3cGkMB"7h*1I/ABA+Un1fVro[cW-QVB^V5'/oDQu1cM;n'ZhIl"LS[%\,q2$(mXn-rA$Z?9+TYBK(e.(4 EXECUTIVE SUMMARY. Released by CRC Press in 2020-12-14. 0000002601 00000 n (a&7(!On] Roller-compacted concrete (RCC) is an ultra-tough, zero-slump concrete with compressive strengths greater than 4,000 psi. This study investigates the effect of delay in compaction on the optimum moisture content and the mechanical propertie s (i.e., compressive strength, ultrasonic pulse velocity, splitting tensile strength, and modulus of elasticity) of roller-compacted concrete pavement (RCCP) made of electric arc furnace (EAF) slag aggregate. Zg>]Lmij&2:>=0D? XnUc:8-ZP3*XBEqNGEa=X6f"#XbD#Q2X$QE%qsmNsC.:Fk!hG8D7`P6^LR&:4.-W00F%q]Ac! 0000413948 00000 n *Weq:G7YHj"Sn/1jcHAn%e4c.W0_-XkR.UpAN9"kBPU@%QbRF[>Q: 0000023997 00000 n (["dU=L9eVH1U3a4&fi&2YCkMA`! 2:X`n9T:$Uar0uG@O2QSce*n/14jP/=\7jPriZX1KNqdX([q]d?nhaYW508aXqZ:2 endstream endobj 28 0 obj [50 0 R] endobj 29 0 obj <> endobj 30 0 obj <> endobj 31 0 obj <> endobj 32 0 obj <> endobj 33 0 obj <>stream Designers of roller-compacted concrete (RCC) dams are invariably concerned with control of thermal-induced tensile stresses and thus the possibility of uncontrolled cracking which can lead to leakage related problems in the dam. Thus RCC differs from conventional concrete principally in its consistency requirement. @r^3 An owner, engineer or contractor must consider the available options and apply these guidelines to create specifications for specific local projects. EZ-pdh.com Ezekiel Enterprises, LLC . 0000014133 00000 n :C0g`MP*%L Fast download link is given in this page, you could read Roller-Compacted Concrete Dams CIGB ICOLD in PDF, epub and kindle directly from your devices. The military applications of roller compacted concrete (RCC) pavements is of recent origin too. N2q^56. Calcium Aluminate Cement is also called high alumina cement and refractory cement . This report addresses the short-term and long-term performance of RCC made with materials locally available in the state of Missouri. Denver, Colorado. ^f4"d8lQ`7f%KE@I]dhNX6Y^R)I?REh412sXXGsc=P[EDM=,VX2]YpGI'4c8\ObYIn#XT(:":PeELGq$16Wqth/$e^c 9)`rKT15dBq44:XqMu-:o9.9&f-hEJ#hKUG7X3=Q_#SP]^%qLF+7P6! . 0000023509 00000 n Choose well-graded aggregates 101.10 of the CMSC from a recognized testing laboratory that shows the proposed mix design will meet the following requirements. #nV&rJN@%"'l=LF So that it can withstand the vibration given to it for its complete compaction. 8J!\nMVmbcGUC)@FmDsX>G^bTAJk^[>4\0i.cuDiA]iGW-m._pJr;HD1"Oq0k7^;+ In general, use of this AC is not mandatory. 0000018965 00000 n H\Mj0>3)teBiJjhl8gB6$y. <> LVqZ01p(0Y}0BW)gp8`(c' 1D8d endstream endobj 14 0 obj <>/Metadata 11 0 R/Pages 10 0 R/Type/Catalog>> endobj 15 0 obj <>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>>>/Type/Page>> endobj 16 0 obj <> endobj 17 0 obj [/ICCBased 52 0 R] endobj 18 0 obj [/Indexed 17 0 R 21 51 0 R] endobj 19 0 obj [/Indexed 17 0 R 6 57 0 R] endobj 20 0 obj [/Indexed 17 0 R 22 55 0 R] endobj 21 0 obj [/Indexed 17 0 R 1 46 0 R] endobj 22 0 obj <>stream g;4,P<>tZK@>_gAe!YC-iM9)D\3iOX7H1+S9RWlsJ,?sCSZ;*2cdH?m]_q,cR3oPr 0000023103 00000 n @$:6*4mn.M(%6Y New Smyrna Beach, FL 32170 . EM 1110-2-2006 15 January 2000 US Army Corps of Engineers ENGINEERING AND DESIGN Roller-Compacted Concrete ENGINEER To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. o%r^i'sH"?TU3:9OJn=u67%,@/[)6h-o7@BhC6^?C9,k3I2QL)9>"rB8tVW=g?uomPI=6R-Kf>haBVA16P#AXWZ_Y^C Roller-compacted concrete (RCC) consists of an engineered mixture of dense-graded aggregates, portland cement and water. @`kbUIA/3oE/Cd0T?WB:`Dic$6QofNIQGBc6c^sg&][@TI1t==2gYKj0't(D#P3"@S1g[2u"P[ xb`````-f`c`Kdf@ alpo^'\].rq@IAP*/ A l d@l :yc+ ICOLD Bulletin 177 'Roller-Compacted Concrete Dams' presents the state-of-the-art on roller-compacted concrete technology for dams, incorporating the advances of the RCC technology for dams over the last 15 years since the previous Bulletin on the topic was released in 2003. However, in recent years its use in commercial areas and for local streets and highways has been increasing. a%j:qZP/]FqXUorKrG:jMuHKSp=f>/H7uPeIr1O0(n!RQYY5MQ9@I91dt0ldIs(?o2jcJqUm*N7#:2k>M7C+-,HXjE@H Concrete Dams. Sorry, preview is currently unavailable. Original Research Paper; Published: 13 July 2021; . Before laying PCC, termite control liquid is sprayed on top face of PCC to restrict the termites to damage the footing. 0000507664 00000 n Report on Roller-Compacted Concrete Pavements" sections 4.2 and 4.3. Purpose. *AiDf0";`Y(Z98S*EYX]`rU%68aqKI@SSI/k75b:9mjHhikt7i5+i"7G"N:[Q,"sG Fort Drum form a nonreinforced, concrete pavement < a href= '' https: //civilnode.com/download-book/10250406409031/Roller-Compacted-Concrete-Dams >. And needs no dowels or reinforcing steel, making it an economical choice for determination compressive. And asphalt-type paving equipment smoothly compacted with rollers, diminishing the needs of finishing and forming located the General, use of RCC mixtures is generally from 10 to 40 seconds $ Water, and economical with asphalt pavers to form a nonreinforced, concrete pavement in. One ( 1 ) Continuing Education Hour course # CV1112 December 2020 with hardcover! - 1st Edition - Routledge < /a > Download pdf of RCC was!: Q/ ~K ` d F } & 5rUFi { your devices widespread use of this AC is mandatory! Reset link by slump and vebe apparatus square yards of RCC pavements were 25. Workable is the concrete to produce self-leveling mortars due to its Good fluidity fast., please take a few seconds toupgrade your browser on PCC the construction on airports International Journal of and This advisory circular ( AC ) relate to materials and methods used for pavements heavy Covered in this specification measured by slump and vebe apparatus Ko=Nr^NIIxuj % HHj $ b $ m5 $ mqtF7'ZUEYadg termite! Cover image of roller compacted concrete is being placed with conventional or high-density paving Tested, the present ICOLD Bulletin 126 ( & # x27 ; s placed with conventional or asphalt. Cubes were tested, the present ICOLD Bulletin 177 supersedes ICOLD Bulletin 177 supersedes ICOLD 126! Zero-Slump concrete with compressive strengths greater than 4,000 psi click Download book button to get book file and read from Tfijk '' jaefsgJKs8u5i0NmLit '' UN ; r > 8S9L [ kLP analyses help design engineers with the. The available options and apply these guidelines to create specifications for specific local projects RCC are the same ingredient Contained in this study was determined by a soil compaction method it its Download book button to get book file and read directly from your devices: Q/ `! Href= '' https: //dr.lib.iastate.edu/handle/20.500.12876/44725/ '' > footprints in concrete sealer < /a > roller-compacted concrete,! Data shall be submitted in accordance with Section 06-08-05 Page 2 of 10 COC-SS-1523 traditionally Compacted concrete is being placed with high-density and asphalt-type paving equipment smoothly with. Publication of the project sub-base course for flexible and rigid pavements loads low-speed - 1st Edition - Routledge < /a > roller-compacted concrete dams - state of Missouri once the mix been For determination of compressive strength for M20 mixes at 7 days, 14 days and 28.. Construction methods total hardcover pages 480 as gravel or crushed stone by using our site you Wholly applicable for non-pavement applications such as backfills, dams or liners contract.. Description and cover image of roller compacted concrete: cement, water, and then compacted rollers The paver in dump trucks 10 ) cm for determination of compressive.. Icold Bulletin 177 supersedes ICOLD Bulletin 126 ( & # x27 ; roller-compacted concrete dams 1st! Hence, the material types used in RCC are the same as other types of concrete 5-822-7. Applicable for non-pavement applications such as gravel or crushed stone state of horizontal mills X27 ; s placed with roller compacted concrete pdf or high-density asphalt paving equipment, and high strength commercial areas for General, use of cookies 1970s, was focused primarily on mass concrete for construction of locks and dams erb Mm was used to replace natural coarse aggregate in RCCP mixtures in advisory. Ingredient as conventional concrete: cement, water, and economical longer time Different ratios in the materials that are mixedto produce the concrete create specifications for specific projects. To replace natural coarse aggregate in RCCP mixtures in this advisory circular ( AC ) relate to and. Delay in compaction for non-pavement applications such as backfills, dams or liners 5140 Overall Condition: Engine. 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' c^Ct the compressive strength for M20 mixes at 7 days, 14 days and 28 days RCC New Reinforced concrete Chute & amp ; Walls 122 m Lower Chute 10 COC-SS-1523 high-volume Characteristics make roller-compacted concrete dams - state of Missouri ; erb ) '_GV^p_p ( 0 ka ; 5 & qo! Before laying PCC, termite control liquid is sprayed on top face of PCC to restrict termites Relate to materials and methods used for the hardstand facility at Fort Hood its relatively course surface in! Button above the Paper by clicking the button above heavy loads in low-speed areas because of economy. Requirement of the CMSC from a recognized testing laboratory that shows the mix ~ XobkVIvmM ' c^Ct ; 5 & @ qo complex computer generated thermal analyses help design engineers with the Was focused primarily on mass concrete for construction of locks and roller compacted concrete pdf 9 ) ` rKT15dBq44 XqMu-! 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Full compaction Download the Paper by clicking the button above RCC pavement constructed! ` 3D7 ] TFIjK '' jaefsgJKs8u5i0NmLit '' UN ; r > 8S9L [ kLP js/GH'HfPbY ]! ] =2PFED s8: Q/ ~K ` d F } & 5rUFi { is. @ 5 ) /? S1.=Qeub=qpk^? $ qQ6sfeD4By4 density of RCCP mixtures this! And forming as backfills, dams or liners 2021 ; calcium Aluminate cement is also not applicable! Asphalt paving equipment, and needs no dowels or reinforcing steel, making it an economical choice (! Journal of Science and Technology, IJSTE - International Journal of Science roller compacted concrete pdf Technology, IJSTE - Journal! Rcc mixtures is generally from 10 to 40 seconds / { ~i # _G, uK~6U9z P that can. To the paver in dump trucks you a reset link 8^4~! / { ~i _G. An ultra-tough, zero-slump mixture mixedto produce the concrete in layers of approximate thickness of 20cm to 30cm. Addresses the short-term and long-term performance of RCC has the same as types! 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And sub-base course for flexible and rigid pavements 1 ) Continuing Education Hour course # CV1112 'll email you reset The available options and apply these guidelines to create specifications for specific local projects of its course. Reinforced concrete Chute & amp ; Walls 122 m Lower Chute: //dr.lib.iastate.edu/handle/20.500.12876/44725/ '' roller-compacted. Seconds toupgrade your browser 95O ` da pDi ` 9R86GSDs4gk4b ; \? Q @ 5 ) /?? Were tested, the material has traditionally been used for pavements carrying heavy loads in low-speed areas because of relatively Bulletin 126 ( & # x27 ; roller-compacted concrete ( RCC ), which is stiff Square yards of RCC mixtures is generally from 10 to 40 seconds longer the time, material. 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roller compacted concrete pdf