Download or read book Recommendations for Coarse Aggregate Testing Requirements for Use in Portland Cement Concrete written by John Christopher Clement and published by . This book was released on 2013 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coarse aggregate is often one of the largest volume occupying components in a portland cement concrete system. With increases in transportation costs and depletion of many of the aggregate sources currently in use the need to reevaluate the performance of aggregates in concrete has arisen. Current aggregate testing requirements for many organizations have not been updated in decades, even with the advancements in aggregate testing equipment that are currently available. This research project investigates current used and potential test methods for evaluating coarse aggregate for use in portland cement concrete. Testing focused on determining the most appropriate aggregate property to evaluate and then determining the correlation to mechanical concrete properties. Relationships between potential aggregate tests and currently used aggregate tests were evaluated to determine if compatible relationships between methods were evident. For this purpose concrete mixtures were made at a fixed aggregate volume to establish if a link was evident between aggregate test properties and concrete. To establish a link between laboratory and real world performance field sites with known distress were visited to better establish limits for aggregate testing requirements. Results obtained provided the basis for recommendations for testing requirements and limits to be used for aggregates in portland cement concrete.
Download or read book Revamping Aggregate Property Requirements for Portland Cement Concrete written by Zachary William Stutts and published by . This book was released on 2012 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current Texas Department of Transportation (TxDOT) procedures for evaluating coarse aggregate for portland cement concrete (PCC) have been in place for over 39 years. Item 421 in the TxDOT "Standard Specifications for Construction and Maintenance of Highways, Streets, and Bridges" describes the tests and test limits that must be met by aggregates before they can be approved for use in portland cement concrete applications. The intention of Item 421 is to ensure that only strong, durable aggregates are used in concrete so that the life of concrete is not cut short by common distress mechanisms which ultimately lead to costly repairs and replacements. The two main tests currently used by TxDOT to evaluate aggregates are the magnesium sulfate soundness test and the Los Angeles abrasion and impact test. These tests are meant to characterize the overall soundness and resistance to abrasion and impact of an aggregate respectively. Unfortunately, past research has shown that the magnesium sulfate soundness and test and the Los Angeles abrasion and impact test are not able to successfully predict the field performance of an aggregate in concrete. The requirements of item 421 have thus far done a reasonably good job of ensuring long-lasting concrete; however the current tests and test limits may be unnecessarily precluding the use of some local materials. As high quality aggregate sources are depleted and transportation costs increase, it will become more necessary to distinguish good performers from marginal and poor performers in the future. If aggregate tests can be found that demonstrate better correlations with field performance, it may be possible to use more local aggregate sources and still provide the desired level of reliability for pavements, bridges, and other TxDOT concrete applications. Researchers are in the processing of collecting coarse and fine aggregates commonly used in Texas and testing these aggregates on a variety of alternative tests. Researchers will attempt to relate this test data to concrete behavior and ultimately recommend tests for improved TxDOT aggregate specifications.
Download or read book Concrete Materials written by Sandor Popovics and published by William Andrew. This book was released on 1992-12-31 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents an in-depth approach to concrete ingredients and their relationships to concrete by discussing their properties, pertinent test methods, specifications, proper use and selection, and solutions to problems in practice. The approach is practice oriented, and the book assists in the improved application of concrete through a thorough understanding of its ingredients. This is aided by the discussion of certain fundamental aspects and relationships in quantitative forms, and by also presenting the interpretation of research and experience. An extensive bibliography is included. The book is a current, organized summary of knowledge concerning concrete-making materials, which will enable the engineer/user to make the best possible product using these materials.
Download or read book Significance of Tests and Properties of Concrete and Concrete making Materials written by Paul Klieger and published by ASTM International. This book was released on 1994 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laboratory Testing of Portland Cement Concrete Patch Material Modified to Reduce Or Eliminate Shrinkage written by Debra L. Bischoff and published by . This book was released on 2004 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual of Test Procedures for Materials written by Illinois. Division of Highways. Bureau of Materials and Physical Research and published by . This book was released on 1997 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Guidelines for Early opening to traffic Portland Cement Concrete for Pavement Rehabilitation written by Thomas John Van Dam and published by Transportation Research Board. This book was released on 2005 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Significance of Tests and Properties of Concrete and Concrete Aggregates written by and published by ASTM International. This book was released on 1956 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aggregate Tests for Portland Cement Concrete Pavements written by Amir Naoum Hanna and published by . This book was released on 2003 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This digest summarizes the findings from NCHRP Project 4-20C, 'Aggregate Tests Related to Performance of Portland cement concrete Pavements: State of the Knowledge.' It was prepared by Dr. Amir N. Hanna ... from the contractor's final report authored by Dr. Kevin J. Folliard and Mr. Kurt D. Smith ..."--Page 1
Download or read book Optimum Size Coarse Aggregate for Portland Cement Concrete Paving written by American Concrete Paving Association. Materials and Mix Design Technical Subcommittee and published by . This book was released on 1972 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineered Concrete written by Irving Kett and published by CRC Press. This book was released on 2009-12-23 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: As every civil engineer knows, Portland Cement is the most versatile and important material of construction, and will probably remain so far into the future. Yet few books, if any, exist that offer an in-depth analysis of the mixing and testing methods of this vital hydraulic cement. This statement, written about the first edition of Engineere
Download or read book Field Measurement of Water cement Ratio for Portland Cement Concrete written by Amy M. Dowell and published by . This book was released on 2002 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Significance of Tests and Properties of Concrete and Concrete Making Materials written by C. H. Best and published by ASTM International. This book was released on 1985-02 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Absorption Capacity of Coarse Aggregates for Portland Cement Concrete written by John F. Staton and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was initiated by the Michigan Department of Transportation (MDOT) to investigate concerns raised by members of Michigan's aggregate industry regarding the validity of moisture conditioning methods employed by MDOT's freeze-thaw testing program for coarse aggregates used in Portland cement concrete. This absorption study is being conducted (with reference to concrete coarse aggregate) to determine whether various soaking periods will achieve saturation levels comparable to the department's vacuum saturation moisture condition method used in the Michigan Test Method, MTM 113.
Download or read book ASTM Standards on Mineral Aggregates and Concrete written by American Society for Testing and Materials. Committee C-9 on Concrete and Concrete Aggregates and published by . This book was released on 1960 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Structural Materials Research Laboratory Lewis Institute Chicago written by Structural Materials Research Laboratory, Chicago and published by . This book was released on 1925 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design of Portland Cement Concrete written by Robert Henry Sherlock and published by . This book was released on 1928 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
