Download or read book Comparison of Colorado Component Hot Mix Asphalt Materials with Some European Specifications written by Timothy Aschenbrener and published by . This book was released on 1992 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the report is to identify differences in Colorado's aggregates and asphalt cements as measured and compared to some of the European tests and specifications. Performance-related tests for asphalt cements developed by SHRP will be the ultimate method to identify performance and should be well received in Europe. Based upon the standard empirical tests on asphalt cements from four refineries commonly used in Colorado, the asphalt cements are comparable to those used in France. The 17 most frequently used aggregate sources in Colorado were tested for the study. The angularity of fine aggregates is measured with the NAA test procedure. The quality of the P200 is measured with respect to angularity, durability, and stiffening.
Download or read book Comparison of Colorado Component Hot Mix Asphalt Materials with Some European Specifications written by Timothy Aschenbrener and published by . This book was released on 1992 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the report is to identify differences in Colorado's aggregates and asphalt cements as measured and compared to some of the European tests and specifications. Performance-related tests for asphalt cements developed by SHRP will be the ultimate method to identify performance and should be well received in Europe. Based upon the standard empirical tests on asphalt cements from four refineries commonly used in Colorado, the asphalt cements are comparable to those used in France. The 17 most frequently used aggregate sources in Colorado were tested for the study. The angularity of fine aggregates is measured with the NAA test procedure. The quality of the P200 is measured with respect to angularity, durability, and stiffening.
Download or read book Comparison of 1992 Colorado Hot Mix Asphalt with Some European Specifications written by Timothy Aschenbrener and published by . This book was released on 1993 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of the Hamburg Wheel Tracking Device and the Environmental Conditioning System to Pavements of Known Stripping Performance written by Timothy Aschenbrener and published by . This book was released on 1994 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty sites of known field performance with respect to moisture susceptibility, both acceptable and unacceptable, were identified. Materials from these sites were tested using several new and innovative tests: the Hamburg wheel-tracking device, the SHRP Environmental Conditioning System (ECS), and tests of only the aggregate component of the mix. Test results indicated the Hamburg wheel-tracking device has very severe moisture conditioning. By modifying the City of Hamburg specification, the results could accurately identify most sites of known performance.
Download or read book Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado written by Yunping Xi and published by . This book was released on 2004 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corrosion of reinforced concrete structures has been a significant problem for many state and transportation agencies since the application of deicing salts was introduced. Much research has been conducted to develop corrosion protection systems that can prolong the life span of reinforced concrete structures. The Colorado Department of Transportation (CDOT) has several routine and experimental measures to prevent corrosion of the rebar including epoxy-coated rebar, calcium nitrite admixture, organic corrosion inhibitors, a thick cover of quality concrete, and a waterproofing membrane covered by an asphalt overlay. An extensive literature review was performed to collect information on various corrosion protection systems that have been used in the U.S. and around the world. Current CDOT practices in terms of corrosion protection measures were reviewed. A draft inspection plan for Colorado's bridge structures was proposed.
Download or read book Evaluation of Fine Aggregate Quality for Hot Mix Asphalt written by Fraizer Parker and published by . This book was released on 1997 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book BITUMINOUS ROAD CONSTRUCTION IN INDIA SECOND EDITION written by KANDHAL, PRITHVI SINGH and published by PHI Learning Pvt. Ltd.. This book was released on 2023-02-04 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first ever text-cum-reference book in India on “Bituminous Road Construction”. It includes references to the codes and specifications of the Indian Roads Congress and the Bureau of Indian Standards (BIS), besides the international standards such as ASTM and AASHTO. This book provides a thorough knowledge of bituminous road construction such as bitumen; aggregate; mix design; special mixes such as stone matrix asphalt and warm mix asphalt; structural design of flexible pavements; asphalt production and construction; distresses in asphalt pavements; maintenance and rehabilitation of asphalt pavements including recycling; and interesting investigations of premature failure of asphalt pavements across the world. It includes a large number of photographs for easy comprehension of the subject matter. This book has been designed to serve as a text for the undergraduate and postgraduate students of Civil Engineering for the courses on: Highway Materials including Testing Laboratory; Asphalt Mix Design; Highway Construction and Maintenance; Highway Pavement Failures; and Design of Flexible Pavements. Cutting-edge technology on bituminous road constructions, included in the book, helps M.Tech and Ph.D. students in conducting research in this field. Since over 95% of highways have bituminous surface, this book is also an ideal reference for thousands of practicing highway engineers who are engaged in the most ambitious highway construction programme ever in India. Highlights of the Second Edition: • Incorporates cutting-edge technology on the topics covered • Includes new sections on bitumen chemistry; durability of bitumen; Balanced Mix Design (BMD); asphalt mix characterization; perpetual pavements; QC/QA in India; and rehabilitation of distressed concrete pavements with bituminous overlays; and life cycle costs of bituminous versus concrete pavements. TARGET AUDIENCE • B.Tech Civil Engineering • M.Tech Highway Education • Practicing Highway Engineer
Download or read book Proceedings written by and published by . This book was released on 2001 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Documentation of Hot Mix Asphalt Overlays on I 25 in 1994 written by Timothy Aschenbrener and published by . This book was released on 1995 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Loading Test of GRS Bridge Pier and Abutment in Denver Colorado written by Kanop Ketchart and published by . This book was released on 1997 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Demonstration of a Volumetric Acceptance Program for Hot Mix Asphalt in Colorado written by Timothy Aschenbrener and published by . This book was released on 1994 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Avalanche Hazard Index for Colorado Highways written by Arthur I. Mears and published by . This book was released on 1995 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study conducted an inventory of existing avalanche paths along Colorado Highways. Information was collected on the size and type of each avalanche path, the historical frequency of avalanche occurrences, the number of avalanche tracks, the length of highway exposed, the volume of traffic on the road, the traffic peak characteristics, the speed of traffic and the consequences of an avalanche encounter with a vehicle. This information was used to generate an Avalanche Hazard Index (AHI) for Colorado Highways. The concept of the AHI has been used in the past as a quantitative measure of the avalanche hazard to traffic. The AHI values calculated in this study are considered relative values and can be used to compare the hazards of particular avalanche paths or avalanche prone routes in Colorado.
Download or read book Long term Field Performance of Geosynthetic reinforced Soil Retaining Walls written by Phillip E. Crouse and published by . This book was released on 1996 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research Abstracts written by and published by . This book was released on 1993 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determining Optimum Asphalt Content with the Texas Gyratory Compactor written by Timothy Aschenbrener and published by . This book was released on 1993 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: A recent change from the California kneading compactor to the Texas gyratory compactor has resulted in significantly lower optimum asphalt contents. Additionally, only one laboratory compactive effort has been used in Colorado regardless of traffic or high temperature environment. Adjustments are being made to the Colorado's hot mix asphalt design procedure to address these concerns. It was decided to use results from the recently acquired European equipment to assist with the adjustments. Additionally, results were used from three other sources: (1) the previously used California kneading compactor, (2) samples from older pavements that were recompacted in the Texas gyratory, and (3) experimental field projects that used the recommended end-point stresses. Optimum asphalt contents need to be determined using varying laboratory compactive efforts that correspond to the various traffic and environmental conditions in Colorado. The recommendations presented in this report include the variable end-point stresses for the Texas gyratory to obtain the optimum asphalt content along with the traffic and environmental categories to assist designers on the appropriate selection of the specified end-point stress. Additionally, minimum Hveem stability values, minimum voids in the mineral aggregate, and an acceptable range for voids filled with asphalt are included.
Download or read book Determining the Degree of Aggregate Degradation After Using the NCAT Asphalt Content Tester written by Randolph Reyes and published by . This book was released on 1997 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research conducted was to determine if aggregate degradation takes place and to measure the possible degree of degradation after bituminous mixtures are heated inside the NCAT Asphalt Content Tester. A study was conducted which compared the original aggregate blend (control specimens) to the residual aggregate blend (experimental specimens) obtained after several bituminous mixtures were heated inside the NCAT Asphalt Content Tester. The control specimens and the experimental specimens used to produce the bituminous mixtures were the result of an aggregate sample which was split three times. Two methods of analysis were used to review the gradation results.
Download or read book HBP QA QC Pilot Projects Construction in 1992 written by Bud A. Brakey and published by . This book was released on 1993 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
