Download or read book Effect of Rate of Lifting of Slump Cone on Indicated Slump of Concrete written by Hugh K. Wilson and published by . This book was released on 1971 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Rate of Lifting of Slump Cone on Indicated Slump of Concrete written by Hugh K. Wilson and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests were conducted using a mechanical device for lifting a slump cone at various lifting rates. Four sets of randomly chosen lift times up to and including 10 sec were used to test four batches each of nominal 1-, 3-, and 6-in.-slump concretes. Three batches of nominal 5-1/2-in.-slump concrete were tested using sequence lift times of three permutations of 1, 5, and 10 sec. All mixtures were proportioned using 1-1/2-in. maximum-size limestone aggregate, 6.2 bags of cement per cubic yard, and 3 oz of molasses as a retarder. The results showed that lapsed time (i.e., time after water was added to the mixture) had more effect on the measured slump of the 1-, 3-, and 6-in.-slump concrete than did randomized time of cone lift. The results of sequence lift time tests showed a slightly significant difference in slump due to time of cone lift, the difference being between the slump occurring for a 1-sec lift time and that occurring for a 5-sec lift time. For nominal 5-1/2-in.-slump concrete, the slump test should be performed as soon as possible after water is added to the mixture using a cone lift time of 5 plus or minus 3 sec. (Author).

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1971 with total page 1478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Summary of Investigations in Support of the Civil Works Program written by Waterways Experiment Station (U.S.) and published by . This book was released on 1969 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ACI Manual of Concrete Practice written by American Concrete Institute and published by . This book was released on 2001 with total page 1134 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Classed Subject Catalog written by Engineering Societies Library and published by . This book was released on 1972 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1971 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by U.S. Army Engineer Waterways Experiment Station and published by . This book was released on 1976 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of the Mini Slump Cone Test written by Todd Hanson and published by . This book was released on 2000 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Early stiffening of cement has been noted as contributing to workability problems with concrete placed in the field. Early stiffening, normally attributed to cements whose gypsum is reduced to hemi-hydrate or anhydrate because of high finish mill temperatures, is referred to as false setting. Stiffening attributed to uncontrolled reaction of C3A is referred to as flash set. False setting may be overcame by extended mix period, while flash setting is usually more serious and workability is usually diminished with extended mixing. ASTM C 359 has been used to detect early stiffening with mixed results. The mini slump cone test was developed by Construction Technology Laboratories (CTL), Inc., as an alternative method of determining early stiffening. This research examined the mini slump cone test procedure to determine the repeatability of the results obtained from two different testing procedures, effect of w/c ratio, lifting rate of the cone, and accuracy of the test using a standard sample.

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1984-06 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Union Catalog written by and published by . This book was released on 1978 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Information Service and published by . This book was released on 1972 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the American Concrete Institute written by American Concrete Institute and published by . This book was released on 1975 with total page 706 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 1972 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Publications of the U S Army Engineers Waterway Experiment Station written by United States. Army. Corps of Engineers and published by . This book was released on 1976 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Publications of the U S Army Engineer Waterways Experiment Station written by Waterways Experiment Station (U.S.) and published by . This book was released on 1973 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: