1 edition of Durability of concrete bridge decks found in the catalog.
Durability of concrete bridge decks
Includes bibliographical references.
|Contributions||Portland Cement Association.|
|LC Classifications||TG325.6 D87 1970|
|The Physical Object|
|Pagination||35 p. :|
|Number of Pages||35|
NCHRP Web-Only Document Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge Decks Suggested Research and Implementation During this project, the experimental design approach outlined in the Methodology was successfully implemented for one situation, the Hypothetical Case Study. NCHRP Web-Only Document Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge Decks REFERENCES (1) Derringer, G. and Suich, R., â Simultaneous Optimization of Several Response Variables,â Journal of .
For concrete bridges, a general study could be found in CEB (): fatigue damage of reinforced concrete deck slab of road bridges has been identified in Japan in the s after 20 years of service; this damage was due to low concrete strength, inadequate detailing of rebars, and overloaded countries also reported some fatigue damage. Philadelphia’s Walnut Lane Bridge, completed in late , is considered the first major prestressed-concrete bridge in the U.S. Gustave Magnel, a Belgian engineer, and Charles Zollman, Magnel’s student, designed the bridge. Each of the post-tensioned concrete beams was cast at the bridge site in a single piece.
concrete bridge decks with corrosion-resistant reinforcing (CRR) bars. A two-phase experimental program was conducted where a control test set consistent with a typical Virginia Department of Transportation bridge deck design using Grade 60 steel (ASTM A, fy = 60 ksi) and epoxy-coated reinforcing steel was compared to deck slab specimens where. Durability of concrete bridge decks with emphasis on epoxy-coated bars. Lisa Michele Samples, Purdue University. Abstract. In this study, the results of an extensive field and laboratory investigation conducted to evaluate the corrosion performance of epoxy .
duty of rulers to encourage public worship
Dutch still-life painting in the seventeenth century.
Tempest of souls
Twenty-five years of governmental research and services
The Roman army in Hispania
Index to Indiana County, Pa., wills, 1803-1900
Sir Horace Rumbold
clearing in the woods.
Treaty with the Philippines on Mutual Legal Assistance in Criminal Matters, Treaty Document 104-18, U.S. Senate, 104th Congress, First Session.
Smart homes for dummies
Mini-roundabouts in England and Wales
The methodology is presented in a text format and as a computational tool, in the form of a Durability of concrete bridge decks book Basic-driven Microsoft Excel spreadsheet. Background information and a hypothetical case study was published as NCHRP Web-Only Document Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge Decks.
concrete before these rigid overlays are constructed. This emphasizes the importance of proper removal of poor quality concrete from bridge decks before overlaying during rehabilitation. 17 Key Words: Distribution Statement: overlays, bridge deck, epoxy overlay, rigid concrete overlay, service life, survival analysis, multiple regression model.
Get this from a library. Durability of concrete bridge decks. [National Research Council (U.S.). Transportation Research Board.; American Association of State Highway and Transportation Officials.; United States.
Federal Highway Administration.]. 33 CAUSES OF CRACKING IN CONCRETE BRIDGE DECKS Inthe Portland Cement Association began a study of concrete bridge deck durability (Durability of Concrete Bridge Decks ). The study included a survey of 1, bridges selected at random in 8 states, plus a detailed sur- vey of 70 bridges in 4 states.
The paper discusses the durability assessment of reinforced concrete bridge decks considering the actions of chlorides. The durability of reinforced concrete bridge decks can be affected by many factors, such as alkalinity, acids, repeated changes of humidity, cyclical temperature changes, carbonation, the action of chlorides, UV radiation, sulphides, fatigue and.
The premature deterioration of concrete bridge decks in regions where deicing chemicals are used has created a multi-billion dollar problem in the United States.
In this paper, a simple method to extend the life of new concrete bridge decks is explored: the reduction of deck by: 2. This study explores the possible damage of such overweight vehicles to concrete bridge decks.
Concrete cylinders in this study were subjected to compressive stresses, equivalent to 40 to 80 percent of the measured strength of concrete, followed by freeze–thaw cycles to simulate field by: 1.
Weiwei Lin, Teruhiko Yoda, in Bridge Engineering, Waterproofing System. Bridge decks are vulnerable, subject to attack by water and chloride that can lead to deterioration and issues with longevity and durability of the bridge decks.
The installation of an effective waterproofing membrane is therefore an essential part of bridge deck system in addition to. Prestressed concrete decks are commonly used for bridges with spans between 25m and m and provide economic, durable and aesthetic solutions in most situations where bridges are needed.
Concrete remains the most common material for bridge construction around the world, and prestressed concrete is frequently the material of choice. Extensively illustrated throughout, this invaluable book /5(4). The resistance of concrete to chloride is good; however, for severe environments such as bridge decks, it can be increased by using a low water-cementitious ratio (about ), at least seven days of moist curing, and supplementary cementitious materials such as.
With less voids between aggregate particles, the HPC mixtures contained less cement paste, approximately 24% by volume. Examined more than one year after construction, crack densities were less on HPC bridge decks than CC bridge decks. HPC mixtures with fly ash exhibited the best potential durability with crack densities less than m / m 2.
deck, durability, finishing, flowing concrete, footing, freeze/thaw durability, fly ash, girder, guide specification, high-performance High-Performance Concrete Bridgesa concise and current reference on HPC technology. Readers are encouraged to submit comments to improve future printings and editions of this book.
Get this from a library. Effect of stress on freeze-thaw durability of concrete bridge decks. [Joseph P Callahan; Chester Paul Siess; Clyde Ervin Kesler] -- This report is recommended to bridge design engineers, construction engineers, concrete researchers and others concerned with concrete bridge deck deterioration.
It contains the findings of research. concrete bridge deck performance This synthesis report provides information on previous and current design and construction practices used to improve the performance of bridge decks.
The primary focus is on North American practice for cast-in-place (full depth and partial depth), reinforced concrete bridge decks on steel beams, concrete I- and.
stressed concrete bridge decks was pre-sented. The durability phase of the program'-' studied the effect of concrete quality and cover on corrosion, the relationship between prestressing and chloride ion penetration in cracked and uncracked concrete, and the specific detailing re-clnirements necessary to reduce the risk of corrosion.
The Methodology, presented in NCHRP Report "Guidelines for Concrete Mixtures Containing Supplementary Cementitious Materials to Enhance Durability of Bridge Decks," consists of six steps: (1) definition of performance requirements, (2) selection of durable raw materials, (3) construction of an experimental design matrix, (4) testing of.
NCHRP Synthesis 4, "Concrete Bridge Deck Durability," published in. is still an excellent source of information on the nature of scaling and spalling and the causes of these mechanisms.
However, engineers continue to search for methods. Recognition of the need for durable concrete in bridge decks is hardly new; however, an enhanced recognition and a commitment to improve durability have increased significantly in the past two decades.
Research directed toward achieving more durable concrete for use in bridge. Get this from a library. Concrete bridge deck durability. [Orrin Riley; American Association of State Highway Officials,; United States. Bureau of Public Roads,; National Research Council (U.S.).
Highway Research Board.]. Durability Indexes. Frost resistance (both water and salt freezing), resistance to Cl − ion permeability, and abrasion resistance of concrete are key factors that affect the durability of concrete bridge deck pavement in cold regions; furthermore, strength is the most basic performance parameter of concrete and is obtained by analyzing and consulting available.
One hundred and twenty three concrete bridge decks containing epoxy-coated reinforcement, uncoated reinforcement, and various other corrosion protection systems were included in a field investigation. An initial visual inspection of these bridge decks showed that 44% had signs of distress from corrosion of the reinforcement.
Concrete Deck Slab. When it comes to bridge floor and deck products, the concrete deck slab is one of the most popular. Typically between 7 and 9 inches thick, this deck has two layers of steel reinforcing bars to provide strength and durability.
Asphalt. For this deck type, corrugated steel planks, 3, 5 or 7 gauge, are attached to the.Topics covered in this synthesis include factors that contribute to the durability of concrete bridge decks; performance of various types of deck protection strategies; lessons learned and the current state of the practice in design, construction, and maintenance of concrete bridge decks; available comparative analysis of the effects of using.