TRANSPORTATION INNOVATIONS FROM STATE DOTS …

Optimizing Silane Application Time for Bridge Decks . Cameron D. Murray . Silane as a bridge deck moisture barrier ... "Determining the effective service life of silane treatments in concrete bridge decks." Construction and Building Materials. 116 (2016): 121-127.

Precast Bridge Deck Design Systems

1 Historical Overview.- 2 Economy and Aesthetics.- 2.1 Design Objectives.- 2.2 Economy.- 2.2.1 Life-Cycle Costs.- 2.2.2 Construction Costs.- 2.2.3 Preliminary ...

Development of Optimal Concrete Mix Designs for Bridge …

Our company was evaluating asphalt vs. concrete for the parking lot area of a new condominium development. Working with NRMCA, the team at MMC Materials delivered a "problem solving" solution complete with design specs. They were instrumental in our decision-making process which resulted in the optimal choice being concrete.

Performance of Bridge Deck Link Slabs Designed with ...

developed for aggregates, concrete, and constructionfor the pu rpose of minimizing cracking in bridge decks. specificationThese s for Low-Cracking High-Performance Concrete (LC-HPC) bridge decks have been updated since the beginning of the study in 2002. To determine the performance of the LC-HPC bridge decks, ancrack surveys are nual performed.

CRACK SURVEYS OF LOW-CRACKING HIGH-PERFORMANCE …

HIGH-PERFORMANCE CONCRETE USING NEVADA AGGREGATES. The performance of concrete bridge decks depends on basic materials as well as external factors such as exposure conditions. The main objective of this research project is to develop concrete performance specifications for Nevada and determine measures which might be used to make concrete …

LOW-CRACKING HIGH-PERFORMANCE CONCRETE (LC-HPC) …

for bridge decks. Fiber Dosage Rates FRC materials for bridge decks and overlays do not have a uniformly applied dosage rate. Macrofiber content varies depending on the material, shape, texture, aspect ratio, field application, and desired performance. Typical ranges used in past bridge deck applications are between 3 to 8 lb/yd3 for polyolefin

Development of Optimal Concrete Mix Designs for Bridge Decks

Cost Benefit Analysis and Implementation of NDT Testing of INDOT Bridge Decks 43 Friction Surface Treatment Selection: Aggregate Properties, Surface Characteristics, ... I-74 Mississippi River Bridge Virtual Reality Simulation 55 Traumahawk 56 ... Optimizing Short Duration Bicycle and Pedestrian Counting in Washington State 150

CRACK SURVEYS OF LOW-CRACKING HIGH-PERFORMANCE …

WEARING SURFACES FOR TIMBER DECKS 11.1 INTRODUCTION A wearing surface is a layer placed on the bridge deck to form the road­ way surface. It is the only portion of the bridge in direct contact with vehicle traffic. On timber bridges, a wearing surface is one of the most important components of the superstructure and serves two primary purposes.

Prestressed Concrete Bridges | Semantic Scholar

Another concern with the concrete used for bridge decks is the chloride permeability of the concrete. Analyses of the concrete cores taken from several existing bridges in Colorado indicated that the concrete used for bridge decks have high chloride permeability, ranging from 5000 to 10,000 coulombs.

[PDF] CO2-Optimization Design of Reinforced Concrete ...

Link to Latest Report: June 2020 Progress Report Background: Deterioration of bridge deck is a major issue for bridge owners. The need for cost-effective and durable rehabilitation methods has been documented by many researchers. The primary causes of deck deterioration include vehicle traffic, environmental effects (i.e. freeze-thaw, salt spray), and maintenance practices (snow …

Optimization of Advanced Cementitious Material for Bridge ...

Development and Construction of Low-Cracking High-Performance Concrete (LC-HPC) Bridge Decks: Free Shrinkage, Mixture Optimization and Concrete Production The development and evaluation of low-cracking high-performance concrete (LC-HPC) for use in bridge decks is described based on laboratory test results and experience gained during the ...

Optimizing the steel girders in a high strength steel ...

Case Study Bridges: Other Bridges in MO Superstructure Steel Concrete Bridge Number 061 140 149 152 710 AVG 028 057 069 520 AVG Year Built 2008 2008 2008 2009 2010 AVG 2009 2010 2011 2006 AVG Span Length 50 50 40 62 64 53.2 36 36 38 40 37.5 Skew 0 0 0 30 35 13 0 15 20 30 16.25 Cost Summary - Labor $14,568 $21,705 $15,853 $24,765 $31,949 $21,768 …

WEARING SURFACES FOR TIMBER DECKS

This paper presents one approach to the analysis and design of post-tensioned cast-in-place concrete slab bridge decks. A Simulated Annealing algorithm is applied to two objective functions: (i) the economic cost; and (ii) the embodied energy at different stages of production materials, transport, and construction. The problem involved 33 discrete design variables: five …

AASHTO - NTPEP - Rapid Set Concrete Patch Materials

6 Assuming 5% debond length (Lls) between deck and girder, at each end of a bridge span of length Lsp, the strain capacity εls of the ECC link slab needed to accommodate the movement imposed by ΔT=50°C temperature variations and shrinkage strain εsh (~0.1%)[10] and the maximum tensile strain εLL (< 0.1%)[11] in the link slab due to the imposed bending moment

Implementation of concrete aggregate optimization ...

AbstractThis paper presents one approach to a methodology to design reinforced concrete cantilever retaining walls for road construction using a hybrid multistart optimization strategic method based on a variable neighborhood search threshold acceptance strategy (VNS-MTAR) algorithm. This algorithm is applied to two objective functions: the embedded carbon dioxide …

Overview of Fiber-Reinforced Concrete Bridge Decks Tech Brief

Mar 03, 2005· In this paper, a method is presented for the total cost optimization of precast, prestressed concrete I-beam bridge systems, by taking into account the costs of the prestressed concrete, deck concrete, prestressed I-beam steel, deck reinforcing steel, and formwork. The problem is formulated as a mixed integer-discrete nonlinear programming ...

Embodied Energy Optimization of Prestressed Concrete Slab ...

The reference bridge has a length of 32.1 m, supported by two girders (cc 7.5 m), concrete deck thickness of 0.33 m and width of 12.5 m, concrete quality C40/50, reinforcement ϕ 16cc280 of B500B quality and a concrete cover of 40 mm; the cross-section at an intermediate bracing of the reference bridge is depicted in Fig. 2. Furthermore, the ...

HIGH-PERFORMANCE CONCRETE USING NEVADA AGGREGATES

Optimizing Mississippi Aggregates for Concrete Bridge Decks. A class BD concrete has been recently added to the Mississippi Department of Transportation's (MSDOT's) classes of concrete in an effort to reduce the amount of shrinkage cracks in bridge decks.

Optimizing the steel girders in a high strength steel ...

Dec 01, 2011· From this study, using various optimization techniques, it was found that by inclusion of an intermediate sized aggregate material, a reduction in cement paste up to 16% is possible for 35 MPa and 50 MPa mix designs typically used in Ontario bridge decks. The aggregate materials used were a natural sand, and two crushed limestones of 19.0 mm ...

Welcome to ROSA P

A ggregate Optimization for AAAP Concrete Bridge Decks - Pilot Program. A pilot program for the construction of bridge decks in the PennDOT system is the focal point of this webinar. A key element in the program is the optimization of the concrete mix design through aggregate …

12SP-604B-11 DEPARTMENT OF TRANSPORTATION SPECIAL ...

AbstractThis paper presents one approach to a methodology to design reinforced concrete cantilever retaining walls for road construction using a hybrid multistart optimization strategic method based on a variable neighborhood search threshold acceptance strategy (VNS-MTAR) algorithm. This algorithm is applied to two objective functions: the embedded carbon dioxide …

STANDARD SPECIFICATIONS FOR STATE ROAD & BRIDGE ...

used for high performance concrete pavement (Grade P1M), substructure concrete (Grade S2M) and bridge deck (Grade DM) applications, when specified in the contract. Pay Factor (PF). The factor that is determined according to subsections d.4 and d.5 of this special provision, used to calculate the price adjustment for a discrete quantity of concrete

Cost Optimization of Prestressed Concrete Bridges ...

The flat bridges are 0.60 m in height and have a single 10.4 m span in the direction of traffic. The multi-girder bridges have five concrete main girders with a 35m free-span and a 0.23 m thick concrete deck. The width of all bridges is 12.8 m comprising two 3.6 m main lanes, shoulders, and New Jersey barriers.

STANDARD SPECIFICATIONS FOR STATE ROAD & BRIDGE ...

Jan 15, 2015· To account for aggregates with different specific gravities, the procedure optimizes the aggregate blend based on volume, rather than weight. To do this, the total volume of aggregate V agg is converted to an equivalent mass (weight) for use in the optimization process by multiplying V agg by the unit weight of water and a "standard" specific gravity …

Skew decks in reinforced concrete bridges

developed for aggregates, concrete, and constructionfor the pu rpose of minimizing cracking in bridge decks. specificationThese s for Low-Cracking High-Performance Concrete (LC-HPC) bridge decks have been updated since the beginning of the study in 2002. To determine the performance of the LC-HPC bridge decks, ancrack surveys are nual performed.


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