• Combined Gradation Example

    2010-6-10 · 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

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  • Michigan Bridge Element Inspection Manual

    2017-10-24 · 13 Prestressed Concrete 2 Prestressed concrete bridge decks. 28 Steel with Open Grid 3 All open grid steel decks with no fill. 29 Steel with Concrete Filled Grid 3 Steel bridge decks with concrete fill either in all of the openings or within the wheel tracks. 30 Steel - Corrugated/ Orthotropic/Etc. 3

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  • – WeiLab

    Liu, Y., Wei, Y.* Abrasion resistance of ultra-high performance concrete with coarse aggregate. ... Wei Y, Feasibility Evaluation of a Long-Life Asphalt Pavement for Steel Bridge Deck, Advances in Civil Engineering, vol. 2020, Article ID 5890945, 8 pages, 2020 ...

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  • High Molecular Weight Methacrylate Sealing of a Bridge …

    2015-6-29 · Sealing of an Iowa Bridge Deck PART I - INITIAL APPLICATION INTRODUCTION The US 136 bridge over the Mississippi River at Keokuk, Iowa, is a 15 span 3,340 ft. x 64 ft. continuous welded plate girder bridge. It was designed by Howard, Needles, Tammen and Bergendoff of Kansas City, Missouri, and constructed by

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  • Research Final Reports | Caltrans

    Task 2543 - Investigation of Polyester Concrete Overlay Rehabilitation Strategy to Extend the Service Life of Concrete Bridge Decks (PDF) - October 2019, 5.7 ; Task 2730 - Evaluation of Remote Control Mowers for Roadside Management (PDF) - October 2019, 3.7 ; Task 3038 - Evaluation of Work Zone Intrusion Alarms (PDF) - August 2018, 4.0

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  • Publications

    C-01-54 Determine Seasonal Variations of in Situ Materials Properties (uploaded 9/3/2020): C-02-64 Assessing New York''s Border Needs (uploaded 6/22/2020): C-03-06 Environmental Impacts of Winter Road Management (uploaded 6/22/2020): C-06-26 Development of Biological Control of Introduced Phragmites Australis (uploaded 6/22/2020): C-11-04 Bridge Load and Resistance …

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  • 2021-10-21 · Characterization of Recycled Concrete Aggregates for Reuse in Rigid Pavements 9:50-10:15 AM F-4 - 15 : 10:30-11:00 AM F-5 Xiong Zhang Professor

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  • Non-Proprietary UHPC Deck Panel Joints

    2020-9-29 · experienced by the deck slabs with respect to different loading conditions. The bridge example that was used to analyze the reinforced concrete deck slab for the transverse specimens in this study has a cross-section consisted of five steel girders spaced at 12 ft on center and a deck slab of 8 in thickness.

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  • High Molecular Weight Methacrylate Sealing of a Bridge …

    Needles, Tammen and Bergendoff. The bridge was opened to traffic November 23, 1985. The bridge-deck placement began November 6, 1984, and was completed August 15, 1985. The deck was placed in 16 sections, beginning on the Iowa side of the river. The concrete was placed east to west in each section using a telescoping

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  • apps.trb

    Guidelines for Dowel Alignment in Concrete Pavements: Completed: NCHRP 10-70: Cost-Effective Connection Details for Highway Sign, Luminaire, and Traffic Signal Structures: Final: NCHRP 10-71: Evaluation of CIP Reinforced Joints for Full-Depth Precast Concrete Bridge Decks : Final: NCHRP 10-72: Bridge Deck Design Criteria and Testing Procedures

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  • Modified Concrete Mixes and Optimized Aggregate …

    2019-3-5 · Concrete will remain in place and PF will equal 1.00 Structural: Concrete will remain in place and PF will equal 0.85 If one or more NDT results fall below the lower specification for 28 day strength: Require removal and replacement Allow the Contractor to submit a plan for corrective action Allow the concrete to remain in place

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  • Use of Impact-Echo Method to Test High-Temperature ...

    The present paper deals with the use of Impact-echo acoustic method to test cement-based mortar composites degraded at high temperatures. The specimens were prepared by using a type CEM I Portland cement and siliceous sand, as well as by substituting 25% of sand with shredded automobile tires and by adding acrylic polymer binder (20% w/w to cement mass).

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  • Development of High Performance Concrete Mixture for ...

    The HPC used in bridge construction in these states has demonstrated high-performance concrete properties, specifically in the area of durability, which has encouraged many DOTs to establish HPC as the standard mix for their bridge decks instead of conventional normal-strength concrete mixes.

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  • Review of annual progress of bridge engineering in 2019 ...

    2020-10-30 · Bridge construction is one of the cores of traffic infrastructure construction. To better develop relevant bridge science, this paper introduces the main research progress in China and abroad in 2019 from 13 aspects, including concrete bridges and the high-performance materials, the latest research on steel-concrete composite girders, advances in box girder and cable …

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  • DIAGNOSTIC EVALUATION AND REPAIR OF …

    Concrete bridge deck degradation has been observed in several bridges located in north Mississippi. In this study a survey was conducted to collect and document instances of deterioration in concrete bridges located throughout the State.

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  • Minneapolis I-35W Bridge Collapse | Failure Case Studies

    On August 1, 2007, an eight-lane, three-span section of the I-35W Bridge across the Mississippi River in downtown Minneapolis collapsed at approximately 6:00 p.m. It was crowded with rush hour traffic. The final death toll was 13. The bridge was the main north-south route through the city. Figure 6-11 shows the bridge before the collapse.

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  • Measuring the influence of Pre-Wetted Lightweight ...

    As such, the Lafayette Consolidated Government in Louisiana began requiring ICC for all cast-in-place structural concrete since 2016. Applications for internal curing in other states have also been studied for bridge decks in Colorado, Illinois, Indiana, New York, North Carolina, Ohio, Oregon, and Utah, .

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  • PROBLEMATIC BRIDGE DECK GETS THIN POLYMER OVERLAY

    PROBLEMATIC BRIDGE DECK GETS THIN POLYMER OVERLAY. The article describes the high performance polymer concrete overlay placed on the Poplar Street Bridge, a 5-span, 8-lane structure carrying Interstate 70, 55 and 64 across the Mississippi in St. Louis, Missouri. Missouri''s experimental evaluation of 2 types of modified asphalt overlays, and 3 ...

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  • Products | Tarmac

    Aggregates Sand, gravel, crushed stone, slag, recycled concrete and geosynthetic materials for building, construction and decorative applications. Asphalt Tarmac offers the widest range of asphalt and high-performance road surface solutions in the UK. Standard or Ultimate Tarmac asphalts. Blocks Aircrete, dense, aggregate, trench and concrete ...

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  • Joost WALRAVEN | Professor Emeritus | Delft University of ...

    In the Netherlands, there are a large number of transversely prestressed concrete bridge decks that have been built in the 60''s and 70''s of the last century and are found to be shear-critical when ...

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  • WA-RD Reports by Number

    2021-10-22 · 814.1 Concrete Pavement Noise (PDF 1.32MB) 2013 813.1 Fatigue and Strength Tests of Heat-Straightened Ferry Loading Bridge Hanger Bars (PDF 2.68MB) 2013 812.1 Cable Median Barrier Program in Washington State ( PDF 7.8) 2013 811.2 Standard Practice for Washing and Cleaning Concrete Bridge Decks and Substructure

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  • Optimizing Mississippi aggregates for concrete bridge decks.

    2021-12-14 · Specifiers of concrete mixtures have utilized additional requirements on aggregates by placing upper and lower limits on combined percent retained on individual sieves. MDOT has recently utilized this concept by introducing similar limits on aggregate gradations used in concrete for bridge decks.

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  • What is Arch Bridge? Different Types of Arch Bridges ...

    2021-12-19 · A through the arch is one where the upper deck is found at the spring line of the arch. It is also known as the half-through arch bridge. For this type of arch bridge reinforced concrete or steel material is used. Example of Through …

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  • Design of Ultra High performance Concrete as an …

    2020-7-24 · Degradation of concrete bridge deck can be in the form of spalling, delamination, scaling due to s poor material design, freeze-thaw damage, and/or corrosion of reinforcing steel due to infiltration of chloride ions and moisture or inadequate clear cover [2,3]. Overlays are often applied to bridge decks

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  • FHWA LTBP Summary—Current Information on the Use …

    2016-8-25 · For cast-in-place concrete decks, the binder used in the concrete mixture to hold the other ingredients together is portland cement. However, in polymer concrete overlays, portland cement is not used as the binder—polymers are used as the binder. Polymers are substances made up of monomers chemically bonded together. A monomer can be

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  • Investigation of interlayer shear failure of concrete ...

    2021-5-1 · The investigated bridge was a part of freight corridor and was made of precast concrete box beams. The average span for concrete bridge ranged from 30 m to 50 m. Two-layered asphalt overlay system was employed for bridge deck overlay. A concrete leveling course was first installed on top of the concrete box beams.

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  • Bridge Manual

    2014-7-28 · Bridge Manual New York State Department of Transportation Office of Structures 4th Edition (1st US Customary Edition) April 2006 Key for Revisions: January 2008; same revisions as Addendum #1 to the January 2008 metric

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  • Huey P. Long Bridge Approaches and Bridge Deck …

    Jefferson, LA. • $440 Million value • 2008 – 2013. The Huey P. Long Bridge Widening was a four-phase project vital to the recovery of Greater New Orleans. The widening added an additional travel lane, as well as inside and outside …

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  • WEST IA DEPARTMENT OF TRANSPORTATION …

    2019-12-11 · 679 Overlaying of Portland Cement Concrete Bridge Decks 150 679.1 .2.1 Specialized Concrete Overlay 679. 2.1.4 Silica Fume Admixture 679. 2.2 Specialized Concrete Mix Design and Testing 679.3. 1.1 Removal of Existi ng Deck Surface Phase I 679.3.7.1 General 679.5.1 Straightedge Test

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