Download or read book Tests of Concrete Aggregates Used in Texas written by James Philip Nash and published by . This book was released on 1917 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Correlation of Concrete Properties with Tests for Clay Content of Aggregate written by Eugene Buth and published by . This book was released on 1964 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral Aggregates written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1958 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin Technical Series written by University of Missouri. School of Mines and Metallurgy and published by . This book was released on 1924 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by University of Missouri. School of Mines and Metallurgy and published by . This book was released on 1926 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soundness Tests of Concrete Aggregates written by Waterways Experiment Station (U.S.) and published by . This book was released on 1958 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Symposium written by National Slag Association and published by . This book was released on 1928 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Research Series written by and published by . This book was released on 1917 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography written by and published by . This book was released on 1947 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of South Texas Aggregates for Use in Hot Mix Asphalt written by and published by . This book was released on 2005 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Methods of Testing Mineral Aggregates and Associated Materials written by National Slag Association and published by . This book was released on 1931 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on Mineral Aggregates Annotated written by Fulton Keller Fears and published by . This book was released on 1949 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tests of Concrete Aggregates St Louis Flood Protection Project St Louis District written by United States. Army. Corps of Engineers. Lower Mississippi Valley Division. Materials and Concrete Laboratory and published by . This book was released on 1959 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ASR in concrete written by Nat Ativitavas and published by . This book was released on 1998 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
