Author: Eric FeriugaPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 295
Book Description
Evaluation of Performance Based Concrete for Bridge Decks
Author: Eric FeriugaPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 295
Book Description
Evaluation of High Performance Concrete in Four Bridge Decks, as Well as Prestressed Girders for Two Bridges
Author: V. RamakrishnanPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 272
Book Description
Final Report on Evaluation of the Performance of Galvanized Reinforcement in Concrete Bridge Decks
Author: David StarkConcrete Bridge Deck Performance
Author: H. G. RussellPublisher: Transportation Research Board
ISBN: 0309070112
Category : Bridges
Languages : en
Pages : 188
Book Description
At head of title: National Cooperative Highway Research Program.
High-Performance Concrete Bridge Decks: A Fast-Track Implementation Study, Volume 2: Materials
Author: Mateusz RadlinskiPublisher: Purdue University Press
ISBN: 9781622601097
Category : Transportation
Languages : en
Pages : 254
Book Description
The purpose of this research was to examine the applicability of ternary binder systems containing ordinary portland cement (OPC), class C fly ash (FA) and silica fume (SF) for bridge deck concrete. This was accomplished in two parts, the laboratory part and a field application part. During the laboratory studies, four ternary mixtures, each containing either 20% or 30% FA and either 5% or 7% SF were subjected to four different curing regimes (air drying, 7 days curing compound application and 3 or 7 days wet burlap curing). In general, all four ternary mixtures exhibited very good water and chloride solution transport-controlling properties (resistance to chloride-ion penetration, chloride diffusivity and rate of water absorption). However, it was concluded that in order to ensure adequate strength, good freezing and thawing resistance, satisfactory resistance to salt scaling, and adequate shrinkage cracking resistance the FA content should not exceed 20%, SF content should not exceed 5% (by total mass of binder) and paste content should be kept below 24% by volume of concrete. Further, wet burlap curing for a minimum of 3 days was required to achieve satisfactory performance and to obtain a reliable assessment of in-situ compressive strength (up to 28 days) using maturity method. The second part of this research examined the performance of ternary concrete containing 20% FA and 5% SF in the pilot HPC bridge deck constructed in northern Indiana. Using maturity method developed for the purpose of this study, it was determined that the unexpectedly high RCP values of concrete placed late in the construction season were mostly attributed to low ambient temperature. Additional applications of the developed maturity method were also demonstrated. These include assessment of risk of scaling and reduction in time to corrosion initiation as a function of construction date, as well as estimation of long-term RCP values of concrete subjected to accelerated curing.
Bridge Deck Performance in Virginia
Author: James DavisPublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 44
Book Description
One of the most comprehensive programs for the evaluation and definition of the performance of concrete in bridge decks was that undertaken cooperatively by the Portland Cement Association, the Bureau of Public Roads, and eight states distributed throughout the United States. Detailed studies of a few bridges were made in four states and surveys were made on from 100 to 150 bridges in each of eight states, including Virginia, and these were reported. The Research Council's special study of the bridge deck concrete included observation of construction and sampling on 17 structures distributed throughout the state with the exception of the easternmost (Suffolk) and westernmost (Bristol) highway construction districts. These decks were constructed during the spring and summer of 1963 under specifications, subsequently upgraded, that were adjudged to produce concrete of "borderline" performance in bridge decks. These decks had been under traffic for six winters. Because of the similarity of the objectives of the two studies it was deemed desirable to include during the survey of the 17 bridges of the Research Council's project a resurvey of the structures included in the PCA-BPR survey last inspected in 1961.
Sustainability assessment of concrete bridge deck designs in coastal environments using neutrosophic criteria weights
Author: Ignacio J. NavarroPublisher: Infinite Study
ISBN:
Category : Mathematics
Languages : en
Pages : 20
Book Description
Essential infrastructures such as bridges are designed to provide a long-lasting and intergenerational functionality. In those cases, sustainability becomes of paramount importance when the infrastructure is exposed to aggressive environments, which can jeopardise their durability and lead to significant maintenance demands. The assessment of sustainability is however often complex and uncertain. The present study assesses the sustainability performance of 16 alternative designs of a concrete bridge deck in a coastal environment on the basis of a neutrosophic group analytic hierarchy process (AHP). The use of neutrosophic logic in the field of multi-criteria decision-making, as a generalisation of the widely used fuzzy logic, allows for a proper capture of the vagueness and uncertainties of the judgements emitted by the decision-makers. TOPSIS technique is then used to aggregate the different sustainability criteria. From the results, it is derived that only the simultaneous consideration of the economic, environmental and social life cycle impacts of a design shall lead to adequate sustainable designs. Choices made based on the optimality of a design in only some of the sustainability pillars will lead to erroneous conclusions. The use of concrete with silica fume has resulted in a sustainability performance of 46.3% better than conventional concrete designs.
Concrete Bridge Engineering
Author: R J CopePublisher: CRC Press
ISBN: 0203497791
Category : Architecture
Languages : en
Pages : 360
Book Description
Nine chapters by a group of authors run from site investigation to assessment, repair, thermal response, structural types, and joints and substructures.
Performance Evaluation of Bridges with Fiber Reinforced Composite Decks
Author: William Edward WolfePublisher:
ISBN:
Category : Bridges
Languages : en
Pages : 100
Book Description
Nondestructive Testing to Identify Concrete Bridge Deck Deterioration
Author: Publisher: Transportation Research Board
ISBN: 0309129338
Category : Technology & Engineering
Languages : en
Pages : 96
Book Description
" TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R06A-RR-1: Nondestructive Testing to Identify Concrete Bridge Deck Deterioration identifies nondestructive testing technologies for detecting and characterizing common forms of deterioration in concrete bridge decks.The report also documents the validation of promising technologies, and grades and ranks the technologies based on results of the validations.The main product of this project will be an electronic repository for practitioners, known as the NDToolbox, which will provide information regarding recommended technologies for the detection of a particular deterioration. " -- publisher's description.