Download or read book Measurement of Bituminous Concrete Core Specific Gravities and Specific Gravities of Bituminous Coated Coarse Aggregates by Means of a Volumeter written by L. E. Grimmer and published by . This book was released on 1957 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Need for a means to control pavement denseness for bituminous concrete construction in Ohio was indicated several years ago by failure of some late season paving. The paving that failed carried up to 20 per cent voids into the winter. Such paving was easy prey to freezing and thawing, and stripping. The proportion of paving that failed to the total paving was small for any one construction season, although one single course resurfacing was almost entirely lost. While it is most important to correct conditions causing critical void contents, consideration must first be given to the accurate measurement of void contents. Several methods are available for the measurement of paving density. Perhaps the most widely recognized is the ASTM method for the determination of specific gravity of compressed bituminous mixtures (D 1188). Data presented in this paper compare specific gravities of cores obtained by the ASTM method, modified by dipping cores in paraffin and time- of-dry weighing, with specific gravities of the same cores obtained by three other methods. Methods are also available to determine the specific gravity of bituminous coated aggregates. For aggregates nonabsorptive to both bituminous material and water, any of the specific gravities shown in ASTM methods of determining specific gravity of coarse and fine aggregates (C 127 and C 128) can be used to determine accurate theoretical maximum densities. For aggregates with bituminous material absorption equal to water absorption, bulk specific gravity from the above methods can be used to determine accurate theoretical maximum densities. A method was presented in 1942 by Nevitt and Krchma (1) to estimate the absorption of bituminous material for aggregates by their absorptions of kerosine. The same year Goshorn and Williams (2) presented a method for the direct measurement of the amount of bituminous material absorbed by aggregate immersed in bitumen. Each of these methods was most useful for voids computations when the method accurately indicated the amount of bituminous material absorption that occurred in aggregates as they were coated in the mix.

Download or read book Density Absorption and Specific Gravity Tests of Aggregates Bituminous Materials Bituminous Mixtures and Surfaces Annotated written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1960 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium on Specific Gravity of Bituminous Coated Agregates written by American Society for Testing Materials and published by . This book was released on 1957 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Density Absorption and Specific Gravity Tests of Aggregates Bituminous Mixtures and Surfaces written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1960 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Density Absorption and Specific Gravity Tests of Aggregates Bituminous Materials Bituminous Mixtures and Surfaces Annotated written by National Research Council (U.S.). Highway Research Board. Committee on Correlation of Density and Stability Tests of Bituminous Mixtures with Service Behavior and published by . This book was released on 1960 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1967 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASTM Bulletin written by American Society for Testing Materials and published by . This book was released on 1956 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Road Abstracts written by and published by . This book was released on 1958 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by American Society for Testing Materials and published by . This book was released on 1955 with total page 1726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Testing and Evaluation written by and published by . This book was released on 1979 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Needs Relating to Performance of Aggregates in Highway Construction written by Richard D. Walker and published by Highway Research Board. This book was released on 1970 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the use of conventional design procedures, aggregates comprise more than 90 percent of the material required for the construction and maintenance of highway pavements. In order to summarize the most important research problems, the top two projects in each of the study areas are as follows: (1) under Portland cement concrete, the role of aggregates particle characteristics and gradations on properties of fresh concrete and performance of hardened concrete are studies, (2) in relation to bituminous concrete and related materials, the stripping of asphalt cement in bituminous mixtures and identification of the significant aggregate surface properties that influence coating and adhesion are studied as well as the soundness of aggregate particles in bituminous mixtures, (3) under base course and shoulder materials, the relationship of aggregate and base course performance under varying traffic loads is studied as well as the determination of the causes of change in gradation for aggregates used in highway base course construction, and (4) aggregate properties are related to skid resistance of pavements and determination is made of the surface characteristics of aggregates used in highway construction.

Download or read book Report written by and published by . This book was released on 1970 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Cooperative Highway Research Program Report written by and published by . This book was released on 1964 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1962 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rapid Test Methods for Field Control of Highway Construction written by John D. Antrim and published by National Academy Press. This book was released on 1970 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research was conducted to determine the state of the art in the development, need, and use of rapid test methods. The first phase comprises a literature survey of current practices in quality control and acceptance testing, along with a study using statistical methods to assess the time limits for rapid tests. The second phase is concerned with the development and evaluation of new rapid test methods or principles to select those worthy of further investigation. thirty-eight state highway departments participated in the study, and interviews were conducted when appropriate. The second phase of the study applied to rapid test methods for asphalt content determination, compaction control, gradation of several types of aggregate, density of base course materials and soils, and moisture content. The results of all tests are appended.

Download or read book A Study of the Use of Viscosity graded Asphalt Cements in Experimental Sections of Pavement written by F. M. Williams and published by . This book was released on 1975 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book O J H R P Report written by Ontario Joint Highway Research Programme and published by . This book was released on 1964 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports of investigations conducted in the Dept. of Civil Engineering, Queen's University in co-operation with the Dept. of Highways of Ontario.