Download or read book Effect of Freeze thaw Cycling on Stress strain Characteristics and Volume Change of Topsoil till Mixtures written by R. W. Culley and published by . This book was released on 1973 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Freeze thaw Cycling on Stress strain Characteristics and Volume Change of Topsoil till Mixtures written by Saskatchewan. Department of Highways and Transportation. Research Branch and published by . This book was released on 1973 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EFFECT OF FREEZE THAW CYCLING ON STRESS STRAIN CHARACTERISTICS AND VOLUME CHANGE OF TOPSOIL TILL MIXTURES written by SASKATCHEWAN. DEPARTMENT OF HIGHWAYS AND TRANSPORTATION. MATERIALS-RESEARCH SECTION. and published by . This book was released on 1973 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Freeze thaw Cycling on Stress strain Characteristics and Volume Change of a Till Subjected to Repetitive Loading written by R. W. Culley and published by . This book was released on 1970 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotechnical Abstracts written by and published by . This book was released on 1974 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Freeze and Thaw Cycling on Soils Stabilized Using Fly Ash written by Maria G. Rosa and published by . This book was released on 2006 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by Saskatchewan. Department of Highways and Transportation and published by . This book was released on 1973 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research in Progress written by and published by . This book was released on 1974 with total page 942 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report written by Saskatchewan. Dept. of Highways and Transportation and published by . This book was released on 1973 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recent Transportation Literature for Planning and Engineering Librarians written by University of California, Berkeley. Institute of Transportation Studies. Library and published by . This book was released on 1984 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of a Test Procedure for Freeze Thaw Durability of Geomaterials Stabilized With Fly Ash written by M. G. Rosa and published by . This book was released on 2016 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research was to develop a freeze-thaw cycling test procedure and to investigate how the volume, moisture content, resilient modulus (Mr), and unconfined compressive strength (qu) of geomaterials, including soils and recycled materials, stabilized with fly ash change after freeze-thaw cycling. Three different types of materials (fine-grained and coarse-grained soils and recycled pavement materials) and five different fly ashes were used at different percentages (10, 12, 14, and 20 % by dry weight). Both one-dimensional and three-dimensional freezing of the specimens were considered. Freezing in three-dimensional was faster in terms of completing the freeze-thaw cycling and provided very similar results to the ones prepared in one-dimensional. Thus, three-dimensional freezing was adopted in this study without access to water (i.e., closed system). The results of this study indicated that the volume of all soil-fly ash mixtures tended to increase after freeze-thaw cycling; however, the volume change was not significant. Resilient modulus tests were conducted on all unstabilized materials, as well as on their mixtures with fly ash, while qu tests were conducted only on fine-grained soil and their fly ash mixtures. The Mr of all mixtures with one exception decreased by an average of 28.5 % when specimens were subjected to freeze-thaw cycling. The drop in the Mr of the specimens leveled off after 5 freeze-thaw cycles. A general trend of higher Mr of materials stabilized with fly ash (from 3 to 168 %), even after freeze-thaw cycles compared to unstabilized material was observed. In general, a reduction in unconfined compressive strength (qu) after freeze-thaw cycles up to 70 % was obtained. However, results showed that qu of stabilized soils that were subjected to freeze-thaw cycles were still higher (from 6 to 157 %) than the qu of unstabilized soils.
Download or read book Public Administration Series Bibliography written by and published by . This book was released on 1984-06 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Freezing and thawing on Structural Strength of Selected Bituminous Stabilized Base Course written by Abbas Ghane-Bassiri and published by . This book was released on 1966 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Material Cycling of Wetland Soils Driven by Freeze Thaw Effects written by Xiaofei Yu and published by Springer. This book was released on 2014-12-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freezing and thawing of soils is a common phenomenon in the winter-cold zone. The thesis titled “Material Cycling of Wetland Soils Driven by Freeze-Thaw Effects” systematically explores the freeze-thaw effects on the accumulation and release processes of carbon and nitrogen in wetland soils, which is a good step toward the investigation of biogeochemical processes in wetlands in seasonal freeze-thaw areas. It is also developing strategies aimed at global warming effects on the accumulation and release of carbon and nitrogen in wetlands. Dr. Xiaofei Yu works at the Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, China.
Download or read book The Soil ice System and the Shear Strength of Frozen Soils written by Roy Robert Goughnour and published by . This book was released on 1967 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Freeze thaw Cycles on Soil Respiration and Nitrogen Dynamics as In fluenced by Soil Structure Aggregate Size and Water Content written by Bangwei Zhang and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The role of soil structure and aggregation in influencing soil respiration and N dynamics in soils undergoing freeze-thaw cycles, as influenced by water content, is poorly known. Surface soil with a texture of sandy loam was collected from an agriculture field in Atlantic Canada. Two studies were undertaken. The first study determined the influence of soil structure (whole / crushed soil) and water content (35%, 60%, and 85% water-filled pore space) on soil respiration and nitrogen dynamics during freezing and thawing of the soil. The second study determined the role of different aggregate size fractions (0~0.25, 0.25~4, and 4~8 mm) on the freeze-thaw effect. The research found microbial metabolism is more limited by environmental conditions than by the substrate availability. Crushing altered structural characteristics and caused changes in substrate solubilization and / or microbial utilization of substrates during freezing and thawing. Furthermore, freezing and thawing did not influence the denitrification of the whole soil, but enhanced denitrification in soils where aggregates were crushed. At 60% WFPS, the interaction among aggregate crushing and freeze-thaw increased denitrification. Also, the impact of freeze-thaw was greater on soil respiration and N mineralization in medium size aggregates (0.25~4mm). Freezing and thawing improved de-nitrification in aggregates on all three size fractions. This project provided new information on the effects of freeze-thaw on soil carbon and nitrogen dynamics as influenced by soil structure and water content. This information will be critical in assessing the impact of climate change in soil carbon and nitrogen dynamics in temperate regions.
