optimized aggregate gradations ppt

WHAT THE HECK IS IT AND WHY THE HECK SHOULD I CARE?

with an Optimized Aggregate Gradation (OAG ) Use the same Xite Manager template and form 2227 in Tex-470-A to document the mix design Reference OAG …

12SP-602D-02 DEPARTMENT OF TRANSPORTATION FOR …

Specifications for Construction and the contract. Use optimized aggregate gradation according to Appendix 1 of this special provision. c. Construction. Use construction methods in accordance with section 602 of the Standard Specifications for Construction. d. Measurement and Payment. The completed work, as described, will be measured and

type of aggregate - SlideShare

Oct 01, 2016· Fine aggregate: The aggregate which passes through 4.75 mm sieve and retained on 75 micron sieve are known as fine aggregate. Fig. Fine Aggregate 9. 2. Coarse Aggregate: The aggregate retained on 4.75 mm IS sieve are Known as coarse aggregate. Fig. Coarse Aggregate 10. 3. All-in-aggregate: It is the combination of both coarse and fine aggregate.

Modified Concrete Mixes and Optimized Aggregate …

Optimized Aggregate Gradations Ethan Bahmer MDOT's Statewide Concrete Construction Engineer. Modified Concrete Mixtures (High Performance) 12SP-604A-09 and 12SP-604B-10.

(PDF) Aggregate Gradations For Concrete Pavement Mixtures

Mar 18, 2020· Optimized aggregate blends may improve the concrete performance and be used to design concretes with lower cementitious material content [1]. Usually, 70 to …

Optimized Mixtures Will Save You Headaches and Money

Optimized Aggregate Gradation (OAG) Concept •Reduce paste content by use of an intermediate aggregate •Sufficient paste volume to fill voids and provide workability •Many states now allow/encourage optimized aggregate blending •Benefits reported: •Reduced shrinkage •Lower cost •Greater strengths •Improved workability

MT 122 Optimized Aggregate Gradation for Hydraulic …

MDT Optimized Gradation Charts.XLS 6.5 Selection of Optimized Aggregate Gradation — Use the aggregate gradations and proportions that plot within the limits of the three charts described above as the basis forARCHIVEtrial batches. Perform trial batches with varying aggregate proportions meeting the limits of the three previous charts to

Gradation and Size - Pavement Interactive

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 ...

Optimized Gradation for Concrete Paving Mixtures

Optimized Gradation – Best Practices • Determine how fine aggregate gradation impacts the box test: Remove all coarse sand (#30 to #4) Test multiple mixtures All fine sand Multiple mixtures with slowly increasing amounts of coarse sand

Optimized Aggregate Gradation for hydraulic Cement ...

OPTIMIZED AGGREGATE GRADATION FOR HYDRAULIC CEMENT CONCRETE MIX DESIGNS TXDOT DESIGNATION: TEX-470-A CONSTRUCTION DIVISION 2 – 6 02/06–03/16 containing example data, with the percent passing and the percent of each aggregate used in the proposed mix design. 4.4 Determine the percent of each aggregate used by the gradation analysis.

Wisconsin Department of Transportation Quality management ...

Jun 24, 2020· Base Aggregate Compaction; Mill / Pulverize / Relay Compaction; Base Aggregate Lab Location; HMA Pavement Nuclear Density; HMA Pavement Percent Within Limits; Optimized Aggregate Gradation Incentive; Flexural Strength for Concrete Mix Design; QMP Construction Guidance. CMM 8-30 General; CMM 8-32 Subgrade; CMM 8-34 Aggregate; CMM 8-35 Concrete

Tarantula Curve - Home

Gradation Specification & Spreadsheet ODOT Report from 2013 Aggregate Class Gradation Specifications Using aggregates effectively in a mixture is the essence of optimized graded concrete. Although the concept of proportioning aggregates may seem very basic at first, it can be very difficult to achieve the required workability.

Optimized Gradation/Mixtures: WELCOME TO THE 2019 Walk ...

Feb 12, 2020· WisDOT Optimized Aggregate Gradation and Mix Design SPV • Defines optimized gradation • Outlines spec and testing requirements • Contractor eligible for 3% incentive • Allows for the design of an optimized mixture • Can reduce cementitious content to 520 lbs/CY • Utilizes new national design procedure ...

1. Program Background and Introduction to Specifications.ppt

Optimized Aggregate Gradation Low-absorption Aggregate 1 inch Max Size Aggregate Cement Content ≤540 lb/yd3 w/c ratio = 0.43 – 0.45 Air Content of 8 ±1½% Designated slump 1½–3 in. (4 3½ in. max) Controlled temperature Improved curing Concrete temperature control 55 – 70°F 50 – 75°F if apppp y groved by Engineer

PPT – Asphalt Concrete Aggregates PowerPoint presentation ...

Asphalt Concrete Aggregates Soil Definition (Engineering) refers to all unconsolidated material in the earth s crust, all material above the bedrock – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 680dad-YzFlZ

0.45 Power Gradation Chart Excel Spreadsheet - CivilWeb ...

The aggregate grading can also be optimized to reduce the quantity of cement required reducing the cost. 0.45 Power Gradation Chart – Origins The 0.45 Power Gradation Chart method originated in the asphalt industry and was developed by Nijboer in an attempt to describe the ideal combined aggregate gradation for asphalt pavements.

Optimized Aggregate Gradation for Hydraulic Cement ...

OPTIMIZED AGGREGATE GRADATION FOR HYDRAULIC CEMENT CONCRETE MIX DESIGNS TXDOT DESIGNATION: TEX-470-A CONSTRUCTION DIVISION 2 – 4 EFFECTIVE DATE: JANUARY 2017 4.4 Complete the Sieve Analysis Table, based on the example shown in Table 1, with the percent passing and the percent of each aggregate used in the proposed mix design.

Materials Forms

Surface Aggregate Selection Form (WWARP) 2148: Certification of Compliance (Treated Timber Products) 2174: Inspectors Batch Plant Checklist: 2181: Worksheet for Dimensional Check for Metal Slump Cone (Without Base) and Tamping Rod: 2192: Forensics Investigation Request: 2227: Optimized Aggregate Gradation Worksheet: 2273: Signing Material ...

Implementation of concrete aggregate optimization ...

The implementation of a step-by-step concrete mixture design procedure to determine an optimized aggregate gradation is described. The procedure uses both the modified coarseness factor and percent retained charts to establish an optimal blend of user-selected aggregates, criteria that are usually not implemented simultaneously.

Optimized Aggregates Gradations for Portland Cement ...

concrete. This aggregate optimization embraces today's availability of new blended cements in Nebraska. These new blended cements enhanced the Alkali Silica Reaction of Nebraska's sand and gravel. As well as, and not short of improving future gradation from a gap-graded to a more dense gradation. Combined aggregate gradations were evaluated

Gradation of Aggregates | Nature | Free 30-day Trial | Scribd

Gradation B. Gradation A. Control points for 12. 5 nominal max. size. 9.5. 12.5. 19 All poss. combinations pass through cross-over point Blends containing more A than B will be closer to A Percent Passing, % 100 90 80 70 60 50 40 30 20 10 0 0.075 0.3 1 .18 Gradation A. Gradation B. Control points for 12. 5 nominal max. size. 4.75 Sieve Size, mm ...

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 ...

Combined gradation example - LinkedIn SlideShare

Nov 03, 2012· This is thecombined weight of cement, fly ash, silica fume, and other pozzolans used in themix.The procedure shown is the same for other combinations of aggregates.Individual Aggregate Gradations & Combined Gradations 2. For each aggregate used in the mix design, include a gradation analysis that isrepresentative ofthe aggregate. The gradations ...

Laboratory Study of Optimized Concrete Pavement Mixtures

The reported approach includes the use of supplementary cementitious materials (SCMs), optimized aggregate gradations, and the use of superplasticizers (high-range 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 ...

Combined Gradation Example - Montana Department of ...

Concrete Aggregate Combined Gradation Example General MDT is moving toward optimized gradations for concrete aggregate. This example presents some basic computations for optimizing a blend of multiple aggregates. Included is the production of three optimization charts that may be required to be included in the concrete mix

Concrete Products - TRB 2019: Reduce portland cement ...

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 …

Pavement Manual: Concrete Materials

Procedures for analyzing aggregate gradations are outline in Tex-470-A, "Optimized Aggregate Gradation for Hydraulic Cement Concrete Mix Designs." It is important to note that if an effort is not made to reduce paste content in the mix design, then there are no benefits to utilizing optimized gradation.

Effect of Optimized Total Aggregate Gradation on Portland ...

similar proportions except for the aggregate where a specified gradation was remanufactured from local aggregate. The near-gap-graded and optimized gradations are shown in Fig­ ures 1 and 2. The aggregate sources were the same for each grada-TABLE 1 Mix Proportions Constituent 101 tion and consisted of a local sand, an AASHTO No. 67 stone and an

AREMA Gradations Affecting Ballast Performance Using ...

optimized aggregate gradation an increase in concrete strength of 10 to 20 percent could be achieved (Goltermann et al., 1997). They also noticed decreased segregation after extended vibration, which leads to quality construction and long performance life. The air voids of

Reducing Clinker Content and Carbon Footprint of Concrete ...

Combined Aggregate Gradations in CSA A23.1-14 • Optimized total aggregate gradation is now allowed to provide the opportunity to improve concrete performance, sustainability and economy by optimizing the aggregate envelope for the whole mix and not the individual components. • Combination must include 3 or more separate components

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

Aggregates of different sizes and gradations were blended to fit exactly 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.

Technical Report Documentation Page

constructed CRCP sections in three projects with optimized aggregate gradation. In one project, test sections were placed where both optimized and normal aggregate gradations were used for a side-by-side comparison. Efforts were made, both in the laboratory and in the field, to identify the benefits of using optimized aggregate in CRCP.