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| Author | : Mooncheol Won |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 2001 |
| Genre | : Aggregates (Building materials) |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 300 |
| Release | : 1997 |
| Genre | : Aggregates (Building materials) |
| ISBN | : |
This interim report documents the field performance of nine concrete pavement projects that incorporate recycled concrete aggregate (RCA) in the construction of the pavement. Multiple sections were evaluated on many of the nine projects, due to perceived differences in performance levels or variations in pavement design (such as the use of virgin aggregate or the inclusion of dowel bars). All told, a total of 17 sections (of which 12 contain RCA) were subjected to an extensive field testing program, consisting of pavement condition surveys, drainage surveys, falling weight deflectometer (FWD) testing, coring, and serviceability assessments.
| Author | : Patrick Amoah Bekoe |
| Publisher | : |
| Total Pages | : |
| Release | : 2009 |
| Genre | : |
| ISBN | : |
ABSTRACT: Abstract of Thesis Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Master of Engineering CONCRETE CONTAINING RECYCLED CONCRETE AGGREGATE FOR USE IN CONCRETE PAVEMENT By Patrick Amoah Bekoe August 2009 Chair: Mang Tia Major: Civil Engineering Our study evaluated the feasibility of using concrete containing recycled concrete aggregate (RCA) in concrete pavement application. Concrete containing 0%, 25% and 50% of RCA were produced in the laboratory and their properties vital to the performance of concrete pavement evaluated. Result from the laboratory testing program indicates that the compressive strength and elastic modulus is reduced slightly as the percentage of RCA increases. The flexural strength, splitting tensile strength and coefficient of thermal expansion is about the same for concrete containing virgin aggregate and RCA. The free shrinkage increases slightly as the percentage of RCA increases. From the measured properties, a finite element analysis was performed to determine how the concretes containing the different amounts of RCA would perform if they were used in a typical concrete pavement in Florida. The analysis from the finite element model determined the maximum stresses under critical temperature and load conditions. The potential performance of the different pavements was evaluated based on the computed maximum stress to the flexural strength ratio. The maximum stress to flexural strength ratio in the pavement was found to be about the same as the percentage of RCA increases. This indicates that RCA can be used successfully in concrete pavement without affecting the performance.
| Author | : James Trevor Smith |
| Publisher | : |
| Total Pages | : 206 |
| Release | : 2009 |
| Genre | : |
| ISBN | : |
Virgin aggregate is being used faster than it is being made available creating a foreseeable shortage in the future. Despite this trend, the availability of demolished concrete for use as recycled concrete aggregate (RCA) is increasing. Using this waste concrete as RCA conserves virgin aggregate, reduces the impact on landfills, decreases energy consumption and can provide cost savings. However, there are still many unanswered questions on the beneficial use of RCA in concrete pavements. This research addresses the many technical and cost-effective concerns regarding the use of RCA in concrete pavements by identifying concrete mixture and proportioning designs suitable for jointed plain concrete pavements; constructing test sections using varying amounts of RCA; monitoring performance through testing, condition surveys and sensor data; modeling RCA pavement performance; and predicting life cycle costs. The research was carried out as a partnership between the Centre for Pavement and Transportation Technology (CPATT) at the University of Waterloo, the Cement Association of Canada, Dufferin Construction, and the Natural Sciences and Engineering Research Council of Canada.rgin aggregate increase as the sources becomes depleted. Multivariable sensitivity analysis showed that the LCCA results were sensitive to construction costs, discount rate, and maintenance and rehabilitation quantities.
| Author | : J. Paul Guyer |
| Publisher | : Guyer Partners |
| Total Pages | : 34 |
| Release | : 2023-01-18 |
| Genre | : Technology & Engineering |
| ISBN | : |
Introductory technical guidance for civil engineers and construction managers interested in use of recycled concrete aggregate in concrete pavements for streets and highways. Here is what is discussed: 1. INTRODUCTION, 2. CURRENT USE OF RCA IN CONCRETE MIXTURES, 3. RCA BASICS, 4. CONSIDERATIONS FOR PAVEMENT DESIGN USING RCA CONCRETE, 5. RCA PRODUCTION AND USE CONSIDERATIONS., 6. EXAMPLE PROJECTS, 7. CONCLUSIONS.
| Author | : Jorge de Brito |
| Publisher | : MDPI |
| Total Pages | : 280 |
| Release | : 2019-07-15 |
| Genre | : Technology & Engineering |
| ISBN | : 3039211404 |
This book is the result of a Special Issue published in Applied Sciences, entitled “New Trends in Recycled Aggregate Concrete". It identifies emerging research areas within the field of recycled aggregate concrete and contributes to the increased use of this eco-efficient material. Its contents are organised in the following sections: Upscaling the use of recycled aggregate concrete in structural design; Large scale applications of recycled aggregate concrete; Long-term behaviour of recycled aggregate concrete; Performance of recycled aggregate concrete in very aggressive environments; Reliability of recycled aggregate concrete structures; Life cycle assessment of recycled aggregate concrete; New applications of recycled aggregate concrete.
| Author | : Jeffrey R. Sturtevant |
| Publisher | : |
| Total Pages | : 278 |
| Release | : 2007 |
| Genre | : |
| ISBN | : |
| Author | : Richard Charles Nelson |
| Publisher | : |
| Total Pages | : 276 |
| Release | : 1998 |
| Genre | : Pavements |
| ISBN | : |
| Author | : Ravindra K Dhir |
| Publisher | : ICE Publishing |
| Total Pages | : 0 |
| Release | : 2019-09-09 |
| Genre | : Technology & Engineering |
| ISBN | : 9780727764638 |
The book is an ideal source of information on the subject and would be a suitable addition to any library as a resource for researchers seeking to develop an overview of the research on this topic.
| Author | : Natt Makul |
| Publisher | : CRC Press |
| Total Pages | : 421 |
| Release | : 2023-04-26 |
| Genre | : Technology & Engineering |
| ISBN | : 1000864715 |
Recycled Aggregate Concrete (RAC) as a sustainable material is gaining increasing importance in the construction industry. This book discusses properties, specifications, and applications of RAC and offers readers insight into current research and advances in the development and utilization of RAC. It shares information gathered about concretes that use RCA (Recycled Concrete Aggregate, a component of RAC), as well as findings and conclusions. This book: • Presents principles of RAC, including theories and experiments • Describes advanced behavior and properties • Covers specifications and codes • Highlights best practices • Summarizes the use of RAC in sustainable concrete construction • Features scientific findings, citations of reliable sources, conclusions, and recommendations that ensure the book is accessible to various levels of expertise This book will be useful for researchers, concrete scientists, technologists, practicing engineers, and advanced students interested in reusing construction waste for sustainable construction practices; it will help them strive toward meeting the UN Sustainable Development Goals (SDGs).
