BRIDGE DECK CONCRETE OVERLAYS ftpdotstatetxus
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BRIDGE DECK CONCRETE OVERLAYS - ftp.dot.state.tx.us

Mar 06, 2018  concrete bridge deck practices. Latex is approximately 50% styrene-butadiene and 50% water, the W/C ratio can be very low. This causes the system to have minimal water for hydration and therefore rapid loss of bleed water occurs. As soon at the LMC forms a “skin”, wet burlap should be applied. And water

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Item 439 Bridge Deck Overlays - ftp.dot.state.tx.us

the overlay on any portion of the prepared bridge deck before the overlay has been placed. Provide side and end forms for supporting the screed and containing the overlay concrete. Provide reinforcement, when required, in accordance with Item 440, “Reinforcement for Concrete,” and the details shown on the plans.

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An Evaluation of Concrete Bridge Deck Overlays and HMA ...

Thirty‐four bridge deck overlays were monitored; 22 were HMA overlays with waterproof membranes, and 12 were low‐slump concrete overlays. At the 20‐year evaluation, all of the overlays had extensive cracking on the surface.

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BRIDGE DECK LATEX CONCRETE OVERLAY Effective: May 15,

BRIDGE DECK LATEX CONCRETE OVERLAY Effective: May 15, 1995 Revised: April 30, 2021 This work shall consist of the preparation of the existing concrete bridge deck and the construction of a latex overlay to the specified thickness. Materials. Materials shall meet the

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BRIDGE DECKS: SURFACING AND JOINT OPTIONS

Bridge Decks: Surfacing and Joint Options. 12. Bonded Concrete Overlays (Item 439): Applicable Uses: • For Bridges with minor to moderate cracking and partial and fulldepth repairs-• Can provide structural benefit with or without the addition of reinforcing steel • Provides a method adding clear cover, delay chloride penetration, ride ...

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Effects of Jackhammer Weight on Bridge Deck Preparation ...

Bridge deck preparation includes but is not limited to all work necessary on the bridge deck prior to overlay concrete placement. “Jack Hammers” heavier than nominal 14 kg class and “Chipping Hammers” heavier than nominal 7 kg shall not be used. Title: Bridge Deck Surfacing, Repair, and Overlay Author(s): Iowa DOT Date: (undated)

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Bridge Deck Overlay - Modified Concrete Suppliers, LLC

2. Bridge Deck Surface Preparation. a. Scarification of bridge deck. Remove existing overlays plus ½” min. existing deck. b. Sounding for bad concrete. c. Removal of deteriorated/unsound concrete – total surface hydrodemolition is the preferred method for longest lasting LMC overlays. d.

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Polyester Polymer Concrete for Bridge Deck Overlays

Application of protective overlays on concrete bridge decks has proven to be one of the most effective methods of preventing corrosive elements from penetrating bridge deck surfaces (Guthrie et al. 2005). Many different materials have been used for protective bridge deck overlays, including but not limited to asphalt concrete, high-density ...

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Longer Lasting Bridge Deck Overlays

bridge deck, bridge deck overlay, bridge deck rehabilitation, concrete overlay, sealer, waterproofing membrane, Rosphalt, permeability 18. Distribution Statement Unlimited with approval of the Kentucky Transportation Cabinet 19. Security Classification (report) Unclassified 20. Security Classification (this page) Unclassified 21. No. of Pages 19.

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Polymer Materials for Bridge Deck Rehabilitation and ...

concrete bridge deck overlays. This overlay system was developed by Caltrans and has been primarily used in California and Nevada with several installations in New York. These overlays are designed to be installed at approx 1in. thick and use vibrating screeds to finish. HMWM is required as a primer for all polyester overlays.

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Investigation of silica fume concrete bridge deck overlay ...

Feb 23, 2016  Many of these microsilica-modified concrete or silica fume concrete (SFC) bridge deck overlays across the State of Wyoming are suffering from premature distress that includes random cracking, loss of bond and delaminations. To determine the most likely cause of the premature overlay failures and to develop a mitigation scheme, this author with ...

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BRIDGE DECK LATEX CONCRETE OVERLAY Effective: May 15,

BRIDGE DECK LATEX CONCRETE OVERLAY Effective: May 15, 1995 Revised: April 30, 2021 This work shall consist of the preparation of the existing concrete bridge deck and the construction of a latex overlay to the specified thickness. Materials. Materials shall meet the

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GUIDANCE FOR BRIDGE DECK OVERLAYS - portal.ct.gov

(1) Protecting the waterproofing membrane over the bridge deck Use the smallest aggregate size mix and minimum lift thickness to pave the first lift of bituminous concrete over the waterproofing membrane. Accordingly, CTDOT’s standard practice is to use a 1-inch HMA S0.25 lift over the waterproofing membrane on bridge deck overlays.

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CONCRETE OVERLAYS FOR BRIDGE DECK REPAIR

A study-that was made to determine suitable overlays for repairing existing deterio­ rated concrete bridge decks is the subject of this report. The present report concerns materials, bonding methods, and flexural stiffness of relatively thin repair overlays to be applied on existing concrete bridge decks.

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TxDOT Specifications - dot.state.tx.us

Nov 30, 2007  8) Quantities for mass concrete and members designated as mass concrete. 9) Indicate type of bridge deck overlay (asphalt or concrete) OPTIONAL REQUIREMENTS 1) Mass concrete may be designated on the plans. 2) Any specific construction sequence requirements. 3) Placing sequence, if required, for slabs on continuous steel units.

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Condition Assessment of Bridge Decks with Asphalt Overlay

Condition Assessment of Bridge Decks with Asphalt Overlay. Background. Ground penetrating RADAR (GPR) is a widely used nondestructive testing (NDT) method for bridge deck evaluation. However, the current GPR signal and data processing software and algorithms are not able to provide comprehensive information about bridge deck condition.

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Latex Modified Concrete Bridge Deck Overlay Standard ...

Bridge Deck Overlay, Additional, is paid based on the actual cost of the materials as invoiced by the material supplier, or at a pre-determined unit bid price as set up in the contract, to as closely as possible capture the actual cost of the extra materials only. Payment for bid items for Latex Modified Concrete Overlay will be made under:

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PPC 1121 Polyester Polymer Concrete Bridge Deck Overlays

Polyester polymer concrete specifications meet federal aid requirements and often closely follow AASHTO T-34 Guide Specifications for Polymer Bridge Deck Overlays. 30+ Years of Proven Performance With millions of square feet of Kwik Bond polyester concrete overlays placed, PPC 1121 has a successful history dating back to the first overlays ...

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PRECAST BRIDGE ELEMENTS IN TEXAS

Sep 08, 2019  Precast Bridge Elements in Texas September 2019 PRECAST BRIDGE ELEMENTS IN TEXAS. Steven Austin, P.E. - TxDOT Bridge Division. 2019 National Concrete Consortium

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IMPLEMENTING NEW MATERIALS

•Empirical Deck Design Not Yet Applicable 18 Concrete Exposure Condition Environmental Reduction Factor, C E not exposed to earth and weather 0.80 exposed to earth and weather 0.70 Table 2.6.1.2-1 See also: Gooranorimi et al. (2016) FRP Reinforcement for Concrete: Performance Assessment and New Construction Vol I: Sierrita De La Cruz Creek Bridge

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TXDOT ACCELERATED BRIDGE CONSTRUCTION

TxDOT Accelerated Bridge Construction 2 Prefabricated Elements - Superstructure ... –Precast Concrete Panels –Full Width, Full Depth Panels 7. I-Girders 8. Box Beams 9. Spread Box Beam (X Beams) 10. Slab Beams 11. ... Modular Units (No Deck) –West Dallas St. in Houston 27.

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Life-Cycle cost-benefit analysis of Bridge deck de-icing ...

May 01, 2019  Yunovich, Thompson, Virmani (2003) used a unit cost of $ 8.36 per f t 2 for patching and $15.80 per f t 2 unit cost for rehabilitation of a bridge deck with LMC overlay. Huang, Adams, and Pincheira, (2004) suggested a range for the agency unit cost for different treatment purposes, with patching and concrete overlay recommended at $14.95 and ...

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Bridge Design Manual - LRFD: Procedure for Archiving ...

This page introduces the Bridge Design Manual – LRFD, which provides design methodology for bridges that considers load and resistance factors based on the known variability of applied loads and material properties. A summary of manual updates is included.

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Bridge Standards (English)

Aug 25, 2011  Off-System 24-Ft Rdwy Bridge Standards Available for download Prestressed I-Girder standards are available for structures with Type Tx28 thru Tx62 girders. These are included in our issued set of Prestressed Concrete I-Girder standards.See MISCELLANEOUS STANDARDS section in the list for all additional standard drawings required.

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BRIDGE DECK ASPHALT CONCRETE PAVEMENT

Deterioration of the concrete bridge deck is one of the most significant problems affecting the service life of bridges in the United States. Moisture penetration into the asphalt overlay and standing water on the concrete bridge deck result in expansion and contraction at the interface on the bridge deck during freeze-thaw cycles.

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Use of Polymer Overlays or Sealers on New Bridges

Sep 22, 2017  Polymer overlays and penetrating deck sealers are used as preventive maintenance options to extend the service life of concrete bridge decks. Overlays and sealers protect concrete structures from deterioration by inhibiting the ingress of chlorides, chemicals, and moisture and by slowing active corrosion.

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Bridge Decks and Overlays

Bridge decks crack in specific patterns that primarily depend upon bridge designs. Normal deck cracking is due to load-induced and thermal effects. Each type of cracking has a distinct pattern. One-hundred and nineteen experimental bridge deck overlays were inspected. Included were 9 membrane bridges, 87 latex concrete overlays

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Evaluations of concrete overlays for bridge deck applications

types of overlays for bridge deck applications, and include: latex modified concrete (LMC), microsilica modified concrete (MMC), microsilica modified concrete with fly-ash (MMC-FA) and polypropylene fiber-reinforced concrete (FRC). The laboratory mixtures were developed using local aggregates, Type-I cement and commercial admixtures and fibers.

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Bridge Decking - BASF

The most notable applications are concrete for bridge deck and parking garage overlays. The addition of Styrofan 1186 to conventional unmodified concrete mixtures reduces the amount of water required for the placement of the mix. The lower water typically results in a cured concrete

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Longer Lasting Bridge Deck Overlays

bridge deck, bridge deck overlay, bridge deck rehabilitation, concrete overlay, sealer, waterproofing membrane, Rosphalt, permeability 18. Distribution Statement Unlimited with approval of the Kentucky Transportation Cabinet 19. Security Classification (report) Unclassified 20. Security Classification (this page) Unclassified 21. No. of Pages 19.

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Edge curling effect on interface delamination of concrete ...

Deterioration of reinforced concrete bridge decks caused by various environmental conditions and traffic loads is a problem of significant concern. A protective thin overlay of about 2-inches is typically placed over newly constructed concrete bridge decks. Concrete overlay

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Precast Bridge Decks - PCI

Precast Bridge Decks. A full-depth precast deck employs a series of precast concrete panels that are full-depth in thickness—as required by structural design—with the length and width determined by specific bridge geometry. The length of the panel along the roadway is approximately 8 to 12 ft. The width of the panels is typically equal to ...

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Sika DOT Approved Products_2

711.2(c) Concrete Curing Compound: Bridge Deck Intermediate - Bridge Deck Intermediate Curing Compound: SikaFilm: 711.3(f) Concrete Admixtures: Specific Performance [Type S - ASTM C 494] - Anti-Washout Admixture - Army Corps Std. CRD-C 661-06 [S-UWVM] Sikament 100 SC

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Notices - dot.state.oh.us

project includes some drainage work, resurfacing a portion of cleveland road at the sr 83/sr 3 interchange, repairing the twin precast box culverts under ramp h-2 at the sr 585/sr 83 interchange, deck patching other structures, placing 6' tall fencing on the north side of the akron road overpass, and various other items of work. date: 6/11/2021

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Contractor's System Project Question and Answer Forum

Jan 03, 2021  This project will repair the bridge deck of MDT Structure ID 05287 carrying Highway 93 over the East Fork of the Bitterroot River approximately 5 miles south of Conner in Ravalli County at RP 18. The work will include minor concrete bridge deck repair and an asphalt overlay. 3.

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Standard Specs - Montana

Apr 23, 2020  The 2020 Standard and Supplemental Specifications are only available in the following electronic format. Hard copies are not available. Spec Book V2.0 - effective February 11, 2021. Quarterly. Spec Book V2.1 - effective April 29, 2021. Spec Book V2.2 - effective July 15, 2021.

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2017 Bridge Preservation Blog

Examples of preventive maintenance are bridge cleaning, deck sealing, sealing joints, thin deck overlays and spot and zone painting. Restorative maintenance includes deck patching, rigid deck overlays, reconstructing/closing joints, superstructure repairs, substructure repairs, fatigue retrofitting, scour repairs, cathodic protection and ...

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Roadway Standards (English)

Feb 24, 2021  Concrete Safety Barrier (F-Shape) Cast-in-Place (Type 1) (Bridge Deck or CRCP) csb316.dgn. CSB(4)-19. Concrete Safety Barrier (F-Shape) Cast-in-Place (Type 2) At Light Pole csb419.dgn. CSB(6)-10. Concrete Safety Barrier (F-Shape) Cast-in-Place (Type 3) At Fixed Objects csb610.dgn. CSB(7)-10. Concrete Safety Barrier (F-Shape) Precast (Type 1 ...

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