Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation Of Latex Modified Concrete Overlays For Cathodic Protection Systems
Download Evaluation Of Latex Modified Concrete Overlays For Cathodic Protection Systems full books in PDF, epub, and Kindle. Read online Evaluation Of Latex Modified Concrete Overlays For Cathodic Protection Systems ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation of Latex Modified Concrete Overlays for Cathodic Protection Systems by : JJ. Bartholomew
Download or read book Evaluation of Latex Modified Concrete Overlays for Cathodic Protection Systems written by JJ. Bartholomew and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cathodic protection systems employing a mixed precious metal oxide coated titanium mesh anode require a cementitious overlay to encapsulate the anode. Several types of overlays have been used including latex modified concrete for five years. Laboratory and field performance have indicated the overlays using a styrene-butadiene rubber latex modifier do not have any adverse operational or performance affects on the cathodic protection system. Acrylic modifiers have been found to cause the formation of anode reaction products. Data are presented on laboratory tests and on completed field projects.
Book Synopsis Field Evaluation of Bridge Deck Cathodic Protection Strip System with Latex Modified Concrete Overlay by : S. V. Chaluvadi
Download or read book Field Evaluation of Bridge Deck Cathodic Protection Strip System with Latex Modified Concrete Overlay written by S. V. Chaluvadi and published by . This book was released on 1990 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Latex-modified Concretes and Mortars by : V. Ramakrishnan
Download or read book Latex-modified Concretes and Mortars written by V. Ramakrishnan and published by Transportation Research Board. This book was released on 1992 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis wil be of interest to materials engineers, construction engineers, maintenance engineers, pavement contractors and others interested in the use of latex-modified mortars (LMM) and concretes ( LMC). Information is provided on material properties of various LMM and LMC, as well as current construction practices used for LMM and LMC. Potential applications for LMM and LMC are also included. The use of innovative modified portland cement mortars and concretes for construction and maintenance applications is growing. This report of the Transportation Research Board describes the current state of the practice with respect to the use of latex-modified portland cement concretes and mortars. The extent of use of each material (including case histories), based on results of surveys of state highway agencies and a review of the literature, is summarized.
Book Synopsis Overview of Latex Modified Concrete Overlays by : Michael M. Sprinkel
Download or read book Overview of Latex Modified Concrete Overlays written by Michael M. Sprinkel and published by . This book was released on 1984 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twelve bridges with latex modified concrete (LMC) overlays ranging in age from new to 13 years were studied and their general condition found to be good. The half-cell and chloride data were inconclusive because background data were not available for the older overlays, but the data should be useful some 5 to i0 years from now if similar data are collected at that time for comparison. The shear strength of the bond between the LMC overlays and the base concretes was about the same or greater than that of the base concrete, which indicates that good bonds were achieved and have been maintained. The permeability to chloride ions based on the rapid permeability test was an average of 773 coulombs (very low) for a 1.25 in. thick LMC overlay and 4,590 coulombs (high) for the base concretes. The inverse of the ratio of the logarithm of the permeability of the LMC overlay to that of the base concrete was 1.27, which provides a very conservative indication of the relative benefits to be obtained from the LMC overlay as compared to an A4 concrete overlay. The three sets of cost assumptions developed indicate that an LMC overlay costs 6% to 31% more than an A4 concrete overlay. Considering that the benefit-to-cost ratio ranged from 0.97 to 1.20, it was concluded that for bridges in which the low permeability provided by the LMC overlay is needed, the benefits usually obtained are worth the extra cost when compared to that of an A4 concrete overlay.
Book Synopsis Specification for Latex-modified Concrete Overlays by : ACI Committee 548, Polymers in Concrete
Download or read book Specification for Latex-modified Concrete Overlays written by ACI Committee 548, Polymers in Concrete and published by . This book was released on 2012 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Concrete Overlays for Bridge Applications by : Khossrow Babaei
Download or read book Evaluation of Concrete Overlays for Bridge Applications written by Khossrow Babaei and published by . This book was released on 1987 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Corrosion Protection Methods for Reinforced Concrete Highway Structures by : Jennifer L. Kepler
Download or read book Evaluation of Corrosion Protection Methods for Reinforced Concrete Highway Structures written by Jennifer L. Kepler and published by . This book was released on 2000 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the 1970s, research projects and field studies have been conducted on different methods for protecting reinforced concrete bridges from corrosion damage. The methods include alternative reinforcement and slab design, barrier methods, electrochemical methods, and corrosion inhibitors. Each method and its underlying principles are described, performance results of laboratory and/or field trials are reviewed, and systems are evaluated based on the results of the trials. Using performance results from the studies and costs obtained from transportation agencies, an economic analysis is used to estimate the cost of each system over a 75-year economic life using discount rates of 2%, 4% and 6%.
Book Synopsis Evaluation of Latex Modified Concrete as a Bridge Deck Wearing Surface by :
Download or read book Evaluation of Latex Modified Concrete as a Bridge Deck Wearing Surface written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electrically Conductive Polymer Concrete Overlay as Secondary Anode for Cathodic Protection by :
Download or read book Electrically Conductive Polymer Concrete Overlay as Secondary Anode for Cathodic Protection written by and published by . This book was released on 1990 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the development of a premixed electrically conductive polymer concrete overlay for use on bridge decks and other concrete members, in conjunction with cathodic protection systems. A field demonstration was performed on a bridge deck (with corroding reinforcing steel) in Pulaski, Virginia, where an active cathodic protection system uses the electrically conductive overlay as the secondary anode to uniformly distribute the current across the bridge deck surface. The performance of the overlay cathodic protection system was monitored for 18 months. The data show that corrosion of the reinforcing steel embedded in the bridge deck was arrested. The overlay is soundly bonded, and there are no indications that the overlay is wearing due to traffic. This report is the conclusion of the research study. Details of the mix design and the installation of the conductive polymer concrete overlay are described in the Interim Report, FHWA-RD-88-145, dated January 1989.
Book Synopsis Evaluation of Latex Modified Concrete as a Bridge Deck Wearing Surface by :
Download or read book Evaluation of Latex Modified Concrete as a Bridge Deck Wearing Surface written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluations of Sacrificial Anodes for Cathodic Protection of Reinforced Concrete Bridge Decks by : David Whiting
Download or read book Evaluations of Sacrificial Anodes for Cathodic Protection of Reinforced Concrete Bridge Decks written by David Whiting and published by . This book was released on 1995 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory evaluations were carried out on a series of anode materials, including aluminum, magnesium, and zinc alloys. Anode/steel couples were placed in simulated concrete environments consisting of sealed containers filled with silica sand treated with a mixed alkali-chloride solution. Measurements of current flow, circuit resistance, potential, and depolarization were made over a period of 18 weeks. Based on results obtained, aluminum and zinc anodes were found to hold the most promise for use as galvanic anodes in reinforced concrete bridge decks. A series of reinforced concrete test slabs were produced for evaluation of the candidate materials. Normal-weight structural concrete, structural lightweight concrete, free-draining concrete, and free-draining latex-modified concrete overlays were placed over the anodes to serve as riding surfaces. Performance of the cathodic protection (CP) systems was evaluated using current flow and depolarization techniques.
Author :Minnesota. Department of Transportation. Research and Standards Section Publisher : ISBN 13 : Total Pages :84 pages Book Rating :4.:/5 (319 download)
Book Synopsis Performance Evaluation of Bridge Deck Protection Systems by : Minnesota. Department of Transportation. Research and Standards Section
Download or read book Performance Evaluation of Bridge Deck Protection Systems written by Minnesota. Department of Transportation. Research and Standards Section and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Bridge Deck Protection Systems by : United States. Federal Highway Administration
Download or read book Investigation of Bridge Deck Protection Systems written by United States. Federal Highway Administration and published by . This book was released on 1988 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Influence on the Bond Between a Polymer Concrete Overlay and an Aluminum Substrate by : David W. Mokarem
Download or read book Environmental Influence on the Bond Between a Polymer Concrete Overlay and an Aluminum Substrate written by David W. Mokarem and published by . This book was released on 2000 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chloride-ion-induced corrosion of reinforcing steel in concrete bridge decks has become a major problem in the United States. Latex-modified concrete, low-slump dense concrete, and hot-mix asphalt membrane overlays are some of the most used rehabilitation methods. Epoxy-coated reinforcing steel was developed and promoted as a long-term corrosion protection method by the Federal Highway Administration. However, recent evidence has suggested that epoxy-coated reinforcing steel will not provide adequate long-term corrosion protection. The Reynolds Metals Company developed an aluminum bridge deck system as a proposed alternative to conventional reinforced steel bridge deck systems. The deck consists of a polymer concrete overlay and an aluminum substrate. The purpose of this investigation was to evaluate the bond durability between the overlay and the aluminum substrate after specimens were conditioned in various temperature and humidity conditions. The different environmental conditionings all had a significant effect on the bond durability. Specimens conditioned at 30°C, 45 °C, and 60°C at 98 percent relative humidity all showed a decrease in interfacial bond strength after conditioning. There was also a decrease in the interfacial bond strength for the specimens conditioned in freezing and thawing cycles and specimens conditioned in a salt water soak. The only exposure condition that increased the bond strength was drying the specimens continuously in an oven at 60°C.
Book Synopsis Evaluation of the Installation and Initial Condition of Rosphalt Overlays on Bridge Decks by : Michael M. Sprinkel
Download or read book Evaluation of the Installation and Initial Condition of Rosphalt Overlays on Bridge Decks written by Michael M. Sprinkel and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protection systems are placed on bridge decks to retard the intrusion of chlorides and moisture that can eventually cause corrosion deterioration. The Virginia Department of Transportation typically uses hydraulic cement concrete (HCC) overlays of latex-modified concrete (LMC); LMC with very early hardening cement (LMC-VE); and silica fume concrete (SFC) and epoxy overlays for deck protection. Occasionally, a conventional asphalt overlay and waterproof membrane system is used. Rosphalt is an asphalt that is considered to be impermeable and has been used on decks without placement of a membrane. The purpose of this research was to evaluate the construction, initial condition, and cost of the Rosphalt overlays placed on two bridges in Virginia: (1) the northbound lanes of I-85 over Route 629 and the eastbound and westbound lanes of Span 22 of the Norris Bridge on State Route 3 over the Rappahannock River. As a comparison to Rosphalt, a conventional asphalt overlay and waterproof membrane system was placed on the adjacent bridge on the southbound lanes of I-85 over Route 629. Emphasis was placed on comparing the wearing and protection systems with respect to speed and ease of construction (including lane closure time), initial condition as indicated by physical properties, protection and skid resistance, and cost. An objective was also to compare these asphalt protection systems to HCC overlays, LMC, and SFC and epoxy overlays. Costs varied greatly depending on the estimates used and the bid prices. Although estimates for the Norris Bridge indicated Rosphalt as the lowest cost option, bid prices showed it was likely the most expensive option. Three overlay options, Rosphalt, SM-9.5 mixture and membrane, and LMC-VE, are rapid and can provide major reductions in traffic control and user costs. Based on laboratory tests, Rosphalt is more fatigue and rut resistant than the SM-9.5 mixture and should last longer, but based on the cost of the first two installations in Virginia, Rosphalt is too expensive to be considered as a competitive overlay system.
Book Synopsis Evaluation of Bridge Deck Protective Strategies by : Khossrow Babaei
Download or read book Evaluation of Bridge Deck Protective Strategies written by Khossrow Babaei and published by Transportation Research Board National Research. This book was released on 1987 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis National Experimental Projects Tabulation by :
Download or read book National Experimental Projects Tabulation written by and published by . This book was released on 1985 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
