optimized aggregates gradations for portland cement

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Optimized Aggregates Gradations for Portland Cement ...

Optimized Aggregates Gradations for Portland Cement Concrete . Mix Designs Evaluation . Principle Investigators: Wally Heyen . NDOR-PCC Engineer . Lieska Halsey . NDOR Research . Investigation Collaborators: Robert Rea . NDOR-Assistant MR Engineer -Flexible Pavement Engineer . Mick Syslo . NDOR-Materials Research Engineer . PCC Laboratory ...

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Optimized aggregates gradations for portland cement ...

Combined aggregate gradations were evaluated for mechanical and durability characteristics for paving mix designs. The outcome of these evaluations resulted in the introduction of a new blend aggregate grading band for the Department named 47B Revised (47BR), which would allow the use of more locally available materials currently being produced ...

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Optimized Aggregates Gradations for Portland Cement Concrete Mix Designs Evaluation Principle Investigators: Wally Heyen NDOR-PCC Engineer Lieska Halsey NDOR Research ... In order to assess the performance and effects of an optimized gradation, ready-mix field trials were proposed to analyze the effects on constructability, strength ...

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Optimized Aggregates Gradations for Portland Cement Concrete Mix Designs ield and Laboratory Testing: In order to analyze what type of guidelines NDOR would need to set on ing and optimization of aggregates, five concrete mixes were proportioned or analyzed using different aggregates currently produced in the western and central part of the state.

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"Optimized Aggregates Gradations for Portland Cement ...

By Wally Heyen, Lieska Halsey, Robert Rea, et al., Published on 06/01/13. Title. Optimized Aggregates Gradations for Portland Cement Concrete Mix Designs Evaluation

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Modified Concrete Mixes and Optimized Aggregate Gradations

Optimized Aggregate Gradations Ethan Bahmer MDOT’s Statewide Concrete Construction Engineer. Modified Concrete Mixtures (High Performance) 12SP-604A-09 and 12SP-604B-10. Modified Concrete Mixtures: ... Reduced the Portland Cement

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Effect of Optimized Total Aggregate Gradation on Portland ...

Effect of Optimized Total Aggregate Gradation on Portland Cement Concrete for Wisconsin Pavements STEVEN M. CRAMER, MICHAEL HALL, AND JAMES PARRY Most state paving specifications for portland cement concrete pavement allow a broad range of total aggregate

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Optimized Gradation for Concrete Paving Mixtures

material (as portland cement) and a mineral aggregate (as sand and gravel) with sufficient water to cause the cement to set and bind ... • This range was similar for multiple gradations and aggregate sources ... Combined Aggregate (74%) Non-optimized mixture Optimized mixture . Aggregate System •50/50 – void ratio 27.1%

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EFFECT OF OPTIMIZED TOTAL AGGREGATE GRADATION ON PORTLAND CEMENT CONCRETE FOR WISCONSIN PAVEMENTS. ... This investigation showed that use of optimized total aggregate gradations instead of near-gap-graded gradations in pavement resulted in an increase in compressive strength of 10 to 20%, reduced water demand by up to 15% to achieve comparable ...

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12SP-602D-02 DEPARTMENT OF TRANSPORTATION FOR

1.1 This method covers the procedures for determining optimized aggregate gradations for Portland Cement Concrete (PCC). 2. Applicable Documents. 2.1 MDOT Standard Specifications for Construction. 2.2 ASTM and AASHTO Standards: ASTM D 4791 Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate

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Optimized aggregates gradations for portland cement ...

Combined aggregate gradations were evaluated for mechanical and durability characteristics for paving mix designs. The outcome of these evaluations resulted in the introduction of a new blend aggregate grading band for the Department named 47B Revised (47BR), which would allow the use of more locally available materials currently being produced ...

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Effect of Optimized Total Aggregate Gradation on Portland ...

Effect of Optimized Total Aggregate Gradation on Portland Cement Concrete for Wisconsin Pavements STEVEN M. CRAMER, MICHAEL HALL, AND JAMES PARRY Most state paving specifications for portland cement concrete pavement allow a broad range of total aggregate

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Optimized Gradation for Concrete Paving Mixtures

material (as portland cement) and a mineral aggregate (as sand and gravel) with sufficient water to cause the cement to set and bind ... • This range was similar for multiple gradations and aggregate sources ... Combined Aggregate (74%) Non-optimized mixture Optimized mixture . Aggregate System •50/50 – void ratio 27.1%

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EFFECT OF OPTIMIZED TOTAL AGGREGATE GRADATION ON PORTLAND

EFFECT OF OPTIMIZED TOTAL AGGREGATE GRADATION ON PORTLAND CEMENT CONCRETE FOR WISCONSIN PAVEMENTS. ... This investigation showed that use of optimized total aggregate gradations instead of near-gap-graded gradations in pavement resulted in an increase in compressive strength of 10 to 20%, reduced water demand by up to 15% to achieve comparable ...

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Optimized Aggregates Gradations for Portland Cement ...

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Concrete: What’s New, What’s Changed and What’s Coming

Topics for Today •The SAM: Common Mistakes and the Future •Optimized Aggregate Gradations (OAG) •The Rise of Portland Limestone Cements (PLCs)

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OKLAHOMA DEPARTMENT OF TRANSPORTATION SPECIAL

Fine Aggregates used for an OGCMD Class A or AP concrete for Portland Cement Concrete Pavement do not have to meet the gradation requirements of Subsection 701.05.C. All OGCMD aggregate sources that have no material retained on or above the ½ inch [12.5 mm] sieve will be consi der ed fi ne agg regat e.

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Implementation of concrete aggregate optimization ...

Jan 15, 2015  The methodology described here uses two widely cited techniques to develop optimized aggregate gradations: the modified coarseness factor chart (MCFC), introduced by Shilstone and shown in Fig. 2, and the percent retained chart to systematically determine a “target” gradation and select an optimized blend of the available aggregates. A distinct feature of the method presented in this study ...

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Section 701 - Portland Cement Concrete for Structures ...

e. The mix design basis for bulk volume (dry, loose) of coarse aggregate per unit volume of concrete is 68% for Grade S1, and 70% for Grade D, Grade S2, Grade T, and Grade S3 Footnote e does not apply to mix designs containing Engineer-approved, optimized aggregate gradations. f. The Contractor may use flexural strength to determine form removal.

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Gradation of Aggregate Ultimate Guide - Construction How

Apr 11, 2020  The maximum size of coarse aggregate used in concrete has a bearing on economy. Usually more water and cement is required for small-size aggregates than for large sizes; The water and cement required for a slump of approximately 3 in. and w/c ratio = 0.54 by wt. is shown in Fig. 4-6

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(PDF) Using Theoretical And Experimental Particle Packing ...

Mixtures with reduced cement and optimized aggregate gradation have shown improved freeze/thaw resistance and lower shrinkage rate. ... Optimized Aggregates Gradations for Portland Cement

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DIVISION 9 – MATERIALS

Portland cement concrete for uses specified in this subsection. Ensure that the relative density (OD) falls within the limits established by freeze-thaw testing. Provide coarse aggregates for Portland cement concrete in accordance with Table 902-1, Table 902-2, and this subsection. A. Slag Coarse Aggregate. Use slag coarse aggregate consisting ...

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TRB 2019: Reduce portland cement content by optimizing ...

Apr 30, 2019  Optimized aggregate gradation can help reduce quantities of ordinary cement and portland-limestone blended cement in concrete, say Hung-Wen Chung, Thanachart Subgranon, Chun-Hao Yang, graduate students, and Mang Tia, professor, University of Florida-Gainesville, and Harvey Deford, structural material research specialist, Florida Department of Transportation, Gainesville, in

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(PDF) Influence of Intermediate-Sized Particle Content on ...

the MCFC’s Zone II are thought to provide better Optimizations were performed as follows: aggregate consistency to Portland cement concrete. On the gradations were determined using the standard sieve other hand, the farther the blend plots from the series; aggregate blends were mathematically center of the WB, the lower the concrete slump is ...

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OPTIMIZED GRADATION FOR CONCRETE PAVING

Optimized Gradation – Best Practices • The distribution of fine sand can vary largely without affecting the workability. • An aggregate volume between 24% to 34% is recommended for #30 - #200. • This range was similar for multiple gradations and aggregate sources • More than 20% retained on the #30 sieve size created finishing issues 48

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OKLAHOMA DEPARTMENT OF TRANSPORTATION SPECIAL

Fine Aggregates used for an OGCMD Class A or AP concrete for Portland Cement Concrete Pavement do not have to meet the gradation requirements of Subsection 701.05.C. All OGCMD aggregate sources that have no material retained on or above the ½ inch [12.5 mm] sieve will be consi der ed fi ne agg regat e.

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Deviations in Standard Aggregate Gradation and its Affects ...

the proportion of aggregate to cement paste in concrete, and can play a major variable that determines the overall durability of the construction material. Increasingly, aggregate in South Carolina are failing to meet the standard aggregate gradation for portland cement concrete, however, the effects of such failed aggregate gradations on

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(PDF) Aggregate Gradations For Concrete Pavement Mixtures

Designing concrete based on aggregate packing and optimized gradations can result in 25 % less cement content to reach a targeted compressive strength and less

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Validity y of 0.45 Power Chart in Obtaining the Optimized ...

Aggregates of different sizes and gradations were blended to exactly fit the gradations of curves raised to 0.35, 0.40, 0.45, 0.50 and 0.55. Five mixtures, which incorporated the aggregate gradations of the five power curves, were made and tested for compressive strength and flexural strength.

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Gradation of Aggregate Ultimate Guide - Construction How

Apr 11, 2020  The maximum size of coarse aggregate used in concrete has a bearing on economy. Usually more water and cement is required for small-size aggregates than for large sizes; The water and cement required for a slump of approximately 3 in. and w/c ratio = 0.54 by wt. is shown in Fig. 4-6

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Section 701 - Portland Cement Concrete for Structures ...

Jul 26, 2013  e. The mix design basis for bulk volume (dry, loose) of coarse aggregate per unit volume of concrete is 68% for Grade S1, and 70% for Grade D, Grade S2, Grade T, and Grade S3 Footnote e does not apply to mix designs containing Engineer-approved, optimized aggregate gradations. f. The Contractor may use flexural strength to determine form removal.

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CS-JN JMF# REVIEWER APPROVED REJECTED DATE

For Optimized Gradations Only -Individual Aggregate Gradations Specific Gravity of Constituent Materials (Dry -Required, SSD -Optional) Typical Ranges: Type I Portland Cement: Class F Fly Ash: 3.15 (approximate) 2.20-2.70 Class C Fly Ash: 2.55-2.80 Slag Cement: 2.85-2.95 Coarse Aggregate

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(PDF) Effects of Aggregate Packing on Concrete Strength ...

Designing concrete based on aggregate packing and optimized gradations can result in 25 % less cement content to reach a targeted compressive strength and less water-reducing admixture to obtain a required consistency. In this research, two studies

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Gradation and Size – Pavement Interactive

Gradation and Size. The particle size distribution, or gradation, of an aggregate is one of the most influential aggregate characteristics in determining how it will perform as a pavement material. In HMA, gradation helps determine almost every important property including stiffness, stability, durability, permeability, workability, fatigue ...

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ALABAMA DEPARTMENT OF TRANSPORTATION

Sep 19, 2019  Note 4. Coarse and fine aggregate gradations used shall meet the gradati on requirements given in Section 801 and Section 802. Optimized gradations that do not meet the gradation requirements given in Section 801 and Section 802 shall be submitted to the Materials and Tests Engineer for approval prior to use. 3. Class of Concrete Required for ...

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DIVISION 9 – MATERIALS

Portland cement concrete for uses specified in this subsection. Ensure that the relative density (OD) falls within the limits established by freeze-thaw testing. Provide coarse aggregates for Portland cement concrete in accordance with Table 902-1, Table 902-2, and this subsection. A. Slag Coarse Aggregate. Use slag coarse aggregate consisting ...

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Literature Search 605: Bridge Low Slump Concrete Overlay ...

cementitious materials (SCMs), optimized aggregate gradations, and the use of superplasticizers (highrange - water reducing admixtures). Current WisDOT practice minimizes the use of portland cement through replacement with SCMs, but does not address the use optimized aggregate gradation or superplasticizers.

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Advances in Civil Engineering Materials

AGGREGATE OPTIMIZATION Traditional optimized aggregate gradations have been specified and endorsed to provide concrete improvement. In contrast, very few, if any, comprehensive methods are readily available at the disposal of engineers to perform aggregate optimization [5]. Theoretical and empirical approaches can be used to obtain a typically ...

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