2,341 research outputs found
A comparison study on low-temperature properties of Stone Mastic Asphalts modified with PmBs or modified fibres
No full textA research was conducted to assess the effectiveness of different kinds of Modified Fibres (MF) on the thermal cracking performance of a Stone Mastic Asphalt (SMA) compared to the conventional SMA mixtures modified with SBS Polymer modified Bitumen (PmB). In addition, the capability of rubberised fibres to alleviate the thermal cracking sensitivity was investigated. Besides the main scope, a series of the same SMAs were also produced containing 25% of Reclaimed Asphalt Pavement (RAP) to investigate the effects of RAP on the low-temperature performance of the mixtures, which were modified either with MF or PmB. The experimental plan included both binder and mixture characterisation by means of Bending Beam Rheometer (BBR) test and Thermal Stress Restrained Specimen Test (TSRST). Binder-scale test results showed that the stiffness of all bituminous compounds is increased by the addition of fibres and rubber improves the elasticity of both neat and PmB compounds. In the mixture scale, TSRST results showed no significant difference between the mixtures. However it is noteworthy that, in addition, better low-temperature performance was recorded for virgin mixtures compared to to RAP containing ones. The overall results may confirm the feasibility of modified fibres in the modification of mixtures at low temperatures
Bernhard Karlgren Portrait of A Scholar
No full textThe author draws a portrait of his teacher Bernhard Karlgren (1889-1978), whose research in a variety of fields laid the foundations of Modern Sinology. The work deals with Karlgren's childhood, school years, university studies at Uppsala and St. Petersburg, adventurous sojourn in China, studies in Paris, and academic career at Uppsala and Gothenburg University. This book will help the reader gain insight into the man behind the stern scholar.Intro -- Preface -- 1 Childhood and Schooldays in Jönköping, 1889-1907 -- THE HOME AND THE FAMILY -- LARS OF THE MANOR AND HIS TWO SONS -- THE CLERGYMAN'S DAUGHTER ELLA HASSELBERG AND HER FAMILY -- THE GOOD AND FAITHFUL SERVANT -- THE DIFFICULT YEARS -- BERNHARD: POET, TRANSLATOR, AND DRAMATIST -- THE DIALECT INVESTIGATOR -- 2 Liber Studiosus, 1907-1909 -- STUDIES AT UPPSALA UNIVERSITY -- RUSSIAN WINTER -- 3 The Great Adventure, 1910-1911 -- SAILING IN A SHIP CARRYING GUNPOWDER AS CARGO -- TAIYUAN UNIVERSITY -- THE INDUSTRIOUS DIALECTOLOGIST -- WORRIES ABOUT THE FUTURE -- THE TREASURES OF THE STONE FOREST -- THE FOREIGN CORRESPONDENT -- 4 The Irresolute Strategist, 1912-1914 -- THE INTERLUDE IN LONDON -- AT THE FEET OF CHAVANNES IN PARIS -- 5 The Diligent Correspondent -- THE AVID READER -- THE GREAT QUESTIONS -- SELF-SEARCHING -- 6 The Scholarly Breakthrough -- UPPSALA OR PARIS? -- THE PUBLIC DEFENSE OF THE THESIS -- THE YOUNG LECTURER -- THE STRUGGLE TO MAKE A LIVING -- THE FARSIGHTED PLANNER -- 7 The Gothenburg Years, 1918-1939 -- THE FIRST YEARS AT GOTHENBURG UNIVERSITY -- BACK TO THE FAR EAST -- BACK AT THE TEACHER'S DESK -- THE NARROW CONFINES OF THE SOCIETY OF SCHOLARSHIP -- THE CONFERRING OF DOCTORAL DEGREES IN 1931 -- BERNHARD KARLGREN AND SVEN HEDIN 9 -- THE DEFENDER OF HUMAN RIGHTS -- BERNHARD KARLGREN OUTSIDE THE IVORY TOWER -- 8 Proximitatem Linguae Longinquae Manifestam Fecit -- CHINA'S TRADITIONAL PHILOLOGY -- LINGUISTIC ECHO-SOUNDING -- RIMES AND SOUNDING SIGNS IN ANCIENT CHINA -- SIBLINGS IN FAMILIES OF CHINESE WORDS -- THE BOLD PIONEER -- UNFINISHED INCEPTIONS -- ABC TRAVELS EAST -- 9 Stockholm, 1939-1959: The Legendary Master -- THE EAST ASIAN COLLECTION -- THE MORPHOLOGY AND SYNTAX OF BRONZE DÉCOR -- THE PHILOLOGIST IN HIS ELEMENT -- EXCURSIONS IN CHINESE GRAMMAR -- THE STERN CRITIC -- THE EMINENT POPULARIZERSCHOLAR IN THE SERVICE OF SOCIETY -- DR. BACKMAN, DOCENT SPIRA, AND SENIOR MASTER BRUUN -- A REMARKABLE FAMILY OF BROTHERS AND SISTERS -- THE VENERATED MASTER AND HIS DISCIPLES -- 10 Bernhard Karlgren, Professor Emeritus, 1959-1978 -- BERNHARD KARLGREN AND THE BMFEA -- IN THE LEXICOGRAPHER'S STUDY -- CITIZEN IN THE REPUBLIC OF SCHOLARS -- A List of Works by Bernhard Karlgren in Other Languages than Swedish, Together with Translations into Chinese and Japanese, and a List of His Distinctions and Awards -- ABBREVIATIONS -- Notes -- CHAPTER 1. CHILDHOOD -- CHAPTER 2. LIBER STUDIOSUS -- CHAPTER 3. THE GREAT ADVENTURE -- CHAPTER 4. IRRESOLUTE STRATEGIST -- CHAPTER 5. DILIGENT CORRESPONDENT -- CHAPTER 6. SCHOLARLY BREAKTHROUGH -- CHAPTER 7. GOTHENBURG YEARS -- CHAPTER 8. PROXIMITATEM LINGUAE -- CHAPTER 9. STOCKHOLM, 1939-1959 -- CHAPTER 10. PROFESSOR EMERITUS -- BibliographyThe author draws a portrait of his teacher Bernhard Karlgren (1889-1978), whose research in a variety of fields laid the foundations of Modern Sinology. The work deals with Karlgren's childhood, school years, university studies at Uppsala and St. Petersburg, adventurous sojourn in China, studies in Paris, and academic career at Uppsala and Gothenburg University. This book will help the reader gain insight into the man behind the stern scholar.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Dilauryl thiodipropionate as a regeneration agent for reclaimed asphalts
No full textConstructing asphalt pavements using reclaimed asphalt pavement (RAP) instead of exclusively virgin materials can significantly reduce environmental impacts and costs. However, the adverse effect of the aged RAP binder on asphalt mixtures’ workability and pavements’ performance restricts the percentage of RAP added to asphalt mixtures. As a solution, regeneration agents can be used to restore (even if partially) the physical, rheological, and chemical properties lost during the aging of the pavement in the field. Therefore, this paper evaluates the feasibility of using Dilauryl thiodipropionate (DLTDP) as a regeneration agent for RAP binders. This study considered two RAP binders (artificial and field). The impact of the DLTDP on the continuous performance grade of each RAP binder was investigated using the Dynamic Shear Rheometer (DSR). The antioxidant and regenerative effects of DLTDP on RAP binders were assessed by Fourier Transform Infrared spectroscopy (FTIR) and SARA fractionation. The adhesion between each RAP binder and granite aggregate (at dry and wet conditions) was evaluated using the bitumen bond strength (BBS) test. The rheological results indicated the softening effect of DLTDP on RAP binders. This softening effect may be explained by the increase of the maltene fractions (resins) and the reduction of the asphaltene fraction. Additionally, regenerated binders showed better oxidative aging and moisture susceptibility resistance than non-regenerated binders. Overall, the results indicated that adding DLTDP to RAP binders partially restored RAP binders' rheological and chemical composition to the target neat asphalt binder without significantly compromising the adhesion properties and rutting resistance. Moreover, the mentioned results verified the great potential of using DLTDP as a regeneration agent for RAP binders, making it possible to produce good-performing asphalt mixtures with a high RAP percentag
Bernhardi Kellii Hypodidascalus : Darin zu sehen Wie die Schulemeister und Eltern ire angehende Kinder ohn viel schlege durch mannigerlei Richtwege auffs beste/ rechtste und leichtste Teutsch und Lateinisch lesen und schreiben lernen mügen ; Mit einer vorrede und zu End angehengten Ethica scholastica ...
No full textAging effects on recycled WMA porous asphalt mixtures
No full textNowadays, the use of reclaimed asphalt pavements (RAP) is often combined with Warm Mix Asphalt (WMA) technologies with several benefits in terms of environment, cost and mechanical performance. Concerns still exist related to in-service and aging characteristics of warm recycled mixtures since WMA technologies have been developed over the last decade and hence long term performance data are not available yet. The objective of this experimental study is to evaluate the aging effect on recycled porous asphalt (PA) mixtures produced at reduced temperatures using different WMA additives (organic, chemical and zeolite) and including 15% of RAP. In this sense, long term aging was simulated in the laboratory on compacted specimens by means of the Viennese Aging Procedure (VAPro). Rheological properties of the extracted bitumen samples were measured in order to evaluate possible links between bitumen and mixtures performance. As far as mixtures are concerned, stiffness tests were carried out before and after aging, whereas fatigue resistance was evaluated on long term aged mixtures to compare long term performance of HMA and WMA porous asphalt. Mixtures as well as bitumens results showed that the lower aging process that WMA mixtures undergo during production affects mixtures stiffness at the beginning of service life. Only the presence of the organic additive increases the stiffness of WMA bitumens and mixtures due to the crystalline network structure that forms in the bitumen. On the other hand, extensive long term aging effects were measured in case of WMA mixtures. Nonetheless, overall fatigue results showed that long term fatigue performance of WMA mixtures are not significantly affected compared to HMA regardless of WMA additive types
Fundamental properties of bitumen binders containing novel cellulose-based poly-functional fibres
No full textA series of Fibre-added bitumen compounds were subjected to conventional and rheological tests for investigating the effectiveness of modified fibres in improving the characteristics of bituminous binders. The studied fibres were novel composite cellulose-based poly-functional fibres with and without a plastomeric polymer and crumb rubber content, which blended with neat bitumen or SBS Polymer modified Bitumen (PmB). The test program included a primary stage of microscopic analysis by means of Scanning Electron Microscopy (SEM), for observing these composite fibres’ microstructure as well as the empirical test methods, and dynamic rheological analyses using Dynamic Shear Rheometer (DSR). According to the conventional test results, the addition of fibres increased the softening point and viscosity and reduced the penetration. From another perspective, while the addition of rubber decreased the softening point and viscosity, it increased the penetration of compounds in comparison to those containing fibres without rubber content. From the results obtained by Multiple-Stress Creep-Recovery (MSCR) and Frequency Sweep (FS) test, the isochronal graphs of complex modulus and creep-recovery curves showed the same trends in terms of increased stiffness. In addition, the phase angle curves confirm that the presence of rubber decreased the stiffness and increased the elasticity for PmB compounds in comparison to those of reference mixtures containing non-rubberized fibres
Bernhard Boyneburg (Barber) Collection ca. 1919-1975
No full textThe collection contains handwritten and typed manuscripts of essays by Bernhard Boyneburg about Richard Wagner and various other topics. Also included is the copy of a letter from the International Tracing Service of the Red Cross about the fate of Bernhard Barber, his wife and his son.Sophie B. Mann, October 2002Bernhard Barber was an author who published political and philosophical works under the name Boyneburg. He was born 1874 in Leipzig, but lived and worked in Vienna. In 1941, he, his wife Olga née Prager (b. 1897) and their son Eduard Fritz (b. 1905) were deported to the Ghetto in Lodz, where they perished. Barberâs daughter Sophie Mann survived the Holocaust.Bernhard Boyneburg''s published works include ,Die Despotie der Mittel, ihre Erkenntnis : die Grundlage rascher Voelkerversoehnung, Anzengruber, Wien 1919, and ,Der Weg aus dem Chaos: Neues zum Satze von der Despotie der Mittel, Amalthea, Zürich etc., 1927'.digitize
Rheological modeling of asphalt binder under different short and long-term aging conditions”
No full textThis paper evaluates whether a reduction in temperature, which is experienced in production techniques such as Warm-Mix-Asphalt, may be beneficial for the short- and long-term aging properties of asphalt binder. For this purpose, two 70/100 pen grade binders, which are part of the core materials used by the active RILEM committee CMB-252, were selected. The materials were artificially aged to six different conditions, first with the Rolling Thin Film Oven at three different temperatures (123oC, 143oC, and 163oC), and then, with the Pressure Aging Vessel. Next, frequency and temperature sweep tests were conducted using the Dynamic Shear Rheometer (DSR) with three plate-plate geometries: 4mm, 8mm, and 25mm. Complex modulus and phase angle master curves were generated and the 2-Spring 2-Parabolic-element 1-Dashpot model was used to investigate the properties of the binders. The comparison of the results shows significant differences between 163oC and 123oC for short-term aging. This trend is confirmed by the model parameters and by the statistical analysis which, in addition, shows clear differences also for the long-term aging. Based on the present findings, upon consideration on DSR compliance (at low temperature for 4mm samples) and on a wider temperature range, it appears that a reduction in the temperature of the short-term aging, which is commonly associated with the mixture production process, may result in a substantially milder short- and long-term aging of the asphalt binder. The results show that a temperature reduction of 40°C during the production may be beneficial to the overall aging of the asphalt binder
Heldenplatz by Thomas Bernhard
Full text linkopenL’opera teatrale Heldenplatz è l’ultima e tra le più importanti dello scrittore e drammaturgo austriaco Thomas Bernhard, pubblicata e rappresentata nel 1988. Il testo provocò uno scandalo in Austria ancora prima di essere messo in scena, poiché presenta critiche verso la società austriaca del secondo dopoguerra, ritenuta da Bernhard colpevole di non aver affrontato il proprio passato nazionalsocialista. Questa vicenda conferma la visione di Bernhard e dimostra l'importanza del teatro per la società.The play Heldenplatz is the last and one of the most important plays by the Austrian author Thomas Bernhard, and it was published and performed in 1988. It caused a scandal in Austria even before its release due to the presence of critical assertions regarding Austrian post-war society in the text. According to Bernhard, that society had not dealt with its nazist past. This reaction shows Bernhard's view to be correct and it highlights the importance of theatre for society
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