Download or read book Uniformity of Cement Strength written by Paul Klieger and published by ASTM International. This book was released on 1987 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Cement Strength Uniformity Information written by R. D. Gaynor and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uniformity of Concrete Strength as Affected by Cement written by Stanton Walker and published by . This book was released on 1958 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of uniformity of cement strength from a single source written by and published by . This book was released on 1991 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uniformity of Cement Strength written by and published by . This book was released on 1987 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cement Strength Uniformity written by Billy M. Scott and published by . This book was released on 1981 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uniformity of Cement Strength written by Emery Farkas and published by . This book was released on 1987 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Illinois Experience with Cement Strength Uniformity written by Oglesby, JR. and published by . This book was released on 1987 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of a cement strength uniformity requirement for the Illinois Department of Transportation's portland cement acceptance program is presented. The Department's historical test data indicate that while cement manufacturers have little difficulty producing cement meeting the minimum strength requirements of ASTM Specification for Portland Cement (C 150-85a), there is significant seasonal variation in strength for some manufacturers. Although cement strength variability is but one factor affecting concrete performance, it becomes of considerable practical importance in the design of economical concrete mixes. To determine the ability of manufacturers to produce cement of uniform strength, ASTM Method for Evaluation of Cement Strength Uniformity from a Single Source (C 917-82) test data was requested from each manufacturer furnishing cement to Illinois. Information on standard deviations, coefficients of variation, and 7- and 28-day average strengths is presented. The test information was studied, and a uniformity requirement was proposed wherein the manufacturer would submit 7- and 28-day strength levels at which he proposed to furnish cement, and control limits would be used to detect significant changes in the process average or variability. Information on standard deviations, coefficients of variation, and plots of average strengths are presented and compared to test information received before enforcement of the uniformity requirement. To verify test data reported by the manufacturer, split portions of selected ASTM C 917 samples are tested by the Department. Data obtained from these samples are also evaluated to determine differences in testing between the manufacturer and Department laboratories. The t-statistic is used to test whether the mean differences are significant. Data obtained are tabulated and presented. Results indicate that cement manufacturers are capable of furnishing cements which the user can be confident will vary in strength between known limits in the long run.
Download or read book Uniformity in Compressive Strengths of Cement and Corresponding Concrete written by HA. Al-Badr and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: This article shows how ASTM Method for Evaluation of Cement Strength Uniformity from a Single Source (C 917-82) serves as a valuable tool in ascertaining the uniformity in the quality of cement produced. The results obtained on compressive strength tests of both cement and concrete--the cement being tested at Saudi Kuwaiti Cement Manufacturing Co. (SKC manufacturing quality control laboratory) and the concrete (using SKC cement) at the quality control laboratory of Saudi Arabian Vulcan Limited, a ready mix concrete plant--clearly indicate that there is very good uniformity in quality of cement produced at SKC's factory situated at Khursaniyah (in the Eastern Province of Saudi Arabia) with a capacity of 7000 MT/day of cement clinker due to the level of automation adopted in process control. Thus the article brings out that, in modern cement plants which are usually large in capacity, C917-82 is a suitable yardstick to assess whether the quality control procedures exercised are effective.
Download or read book Study of Uniformity of Concrete Flexural Strength Test Results written by United States. Army. Corps of Engineers. Ohio River Division Laboratories and published by . This book was released on 1954 with total page 92 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 Joseph F. Lamond and published by ASTM International. This book was released on 2006 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Uniformity of Compressive Strength Tests of Ready Mixed Concrete written by Delmar L. Bloem and published by . This book was released on 1955 with total page 11 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 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 Amendment of Appendix X2 in ASTM C 917 Evaluation of Cement Uniformity from a Single Source written by V. Sykora and published by . This book was released on 1995 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test Method for Evaluation of Cement Strength Uniformity from a Single Source (ASTM C 917) in the ASTM Annual Book of Standards, Volume 4.01, Cement, Lime, and Gypsum provides methods to evaluate the cement strength uniformity from a single source. Test data comparing 1976 through 1977 and 1991 show a general increase in strengths over that period of time. In 1976, 45% of the labs had annual average 7-day strengths less than 27.6 MPa (4000 psi), while in 1991 none of the plants had averages below that level. The data show the cement industry, overall, shipped a more consistent product in 1991 compared to 1976 through 1977. The percentage of plants with a standard deviation below 2.1 MPa (300 psi) at 7 days increased from 63 to 81% during that time period. A higher percentage of plants had the total coefficient of variation and corrected deviations below 6%. The testing error remained the same with the 1976 data and the 1991 data, but the testing error coefficient of variation improved.
Download or read book Uniformity of Cements written by and published by . This book was released on 1962 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Notable progress in portland cement concrete technology has been recorded during the past 25 years. However, one related subject which has lagged relatively far behind concerns knowledge of the effect which portland cement exerts on the performance characteristics of concrete, particularly durability. Aware of the need for basic research in this area, the New York State Department of Public Works in 1959 authorized the Bureau of Physical Research to initiate a broad research program entitled, "Types of cement vs. durability of concrete." This report presents the work completed under Phase 2 of the program.
Download or read book Tests of Uniformity of Mortar Strengths of Cement Samples from Same Source written by Stanton Walker and published by . This book was released on 1957 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of the Uniformity of Mixing of Portland Cement and Bituminous Concrete for Various Mixing Times by the Use of Radioisotopes final Technical Report for that Phase of the Program Dealing with Portland Cement Concrete written by Clyde Ezra Poovey and published by . This book was released on 1961 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
