Field Study of Air Content Stability in the Slipform Paving Process PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Field Study of Air Content Stability in the Slipform Paving Process PDF full book. Access full book title Field Study of Air Content Stability in the Slipform Paving Process by . Download full books in PDF and EPUB format.
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 230
Get Book Here
Book Description
This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.
Author:
Publisher:
ISBN:
Category : Concrete
Languages : en
Pages : 230
Get Book Here
Book Description
This study evaluated the impacts of construction on the air content and air-void system structure of Portland cement concrete pavements. The primary intent was to quantify the air content of fresh concrete before and after it has gone through the slipform paver. The air-void system parameters of hardened concrete were then assessed using cast and extracted core specimens. The results of the air content testing on fresh concrete and the concrete cylinder specimens cast in the field suggested that there is some loss of air as the concrete passes through the paver. Laboratory testing performed on cores extracted from the pavement did not provide any conclusive evidence that entrained air is lost during the slipform paving process. In fact, many of the extracted cores had measured air content values that were much higher than the specification requirement. If excessive, this could result in increased permeability and low-strength related issues. Although a rigorous statistical analysis was not performed, the results suggest that the air content testing on fresh concrete is not capturing the true air content of the concrete placed with a slipform paver. The fresh concrete air content is generally lower than the air content measured in the cores.
Author: Gopal C. Pati
Publisher:
ISBN:
Category : Impedidos
Languages : en
Pages : 390
Get Book Here
Book Description
Author: Sarah L. Fowler
Publisher: IUCN
ISBN: 9782831706504
Category : Business & Economics
Languages : en
Pages : 282
Get Book Here
Book Description
The Darwin Elasmobranch Biodiversity Conservation and Management project in Sabah held a three-day international seminar that included a one-day workshop in order to highlight freshwater and coastal elasmobranch conservation issues in the region and worldwide, to disseminate the result of the project to other Malaysian states and countries, and to raise awareness of the importance of considering aspects of elasmobranch biodiversity in the context of nature conservation, commercial fisheries management, and for subsistence fishing communities. These proceedings contain numerous peer-reviewed papers originally presented at the seminar, which cover a wide range of topics, with particular reference to species from freshwater and estuarine habitats. The workshop served to develop recommendations concerning the future prospects of elasmobranch fisheries, biodiversity, conservation and management. This paper records those conclusions, which highlight the importance of elasmobranchs as top marine predators and keystone species, noting that permanent damage to shark and ray populations are likely to have serious and unexpected negative consequences for commercial and subsistence yields of other important fish stocks.
Author: William Frederick Doolittle
Publisher: Legare Street Press
ISBN: 9781015736184
Category : History
Languages : en
Pages : 0
Get Book Here
Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author:
Publisher:
ISBN:
Category : Ability
Languages : en
Pages : 20
Get Book Here
Book Description
Author: Joël Bonnemaison
Publisher: University of Hawaii Press
ISBN: 9780824815257
Category : History
Languages : en
Pages : 402
Get Book Here
Book Description
This personal observation of Tanna, an island in the southern part of the Vanuatu archipelago, presents an extraordinary case study of cultural resistance. Based on interviews, myths and stories collected in the field, and archival research, The Tree and the Canoe analyzes the resilience of the people of Tanna, who, when faced with an intense form of cultural contact that threatened to engulf them, liberated themselves by re-creating, and sometimes reinventing, their own kastom. Following a lengthy history of Tanna from European contact, the author discusses in detail original creation myths and how Tanna people revived them in response to changes brought by missionaries and foreign governments. The final chapters of the book deal with the violent opposition of part of the island population to the newly established National Unity government.
Author: David Whiting
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 56
Get Book Here
Book Description
Author: Thayer Soule
Publisher: University Press of Kentucky
ISBN: 0813157307
Category : History
Languages : en
Pages : 258
Get Book Here
Book Description
Thayer Soule couldn't believe his orders. As a junior officer with no military training or indoctrination and less than ten weeks of active duty behind him, he had been assigned to be photographic officer for the First Marine Division. The Corps had never had a photographic division before, much less a field photographic unit. But Soule accepted the challenge, created the unit from scratch, established policies for photography, and led his men into combat. Soule and his unit produced films and photos of training, combat action pictures, and later, terrain studies and photographs for intelligence purposes. Though he had never heard of a photo-litho set, he was in charge of using it for map production, which would prove vital to the division. Shooting the Pacific War is based on Soule's detailed wartime journals. Soule was in the unique position to interact with men at all levels of the military, and he provides intriguing closeups of generals, admirals, sergeants, and privates -everyone he met and worked with along the way. Though he witnessed the horror of war firsthand, he also writes of the vitality and intense comradeship that he and his fellow Marines experienced. Soule recounts the heat of battle as well as the intense training before and rebuilding after each campaign. He saw New Zealand in the desperate days of 1942. His division was rebuilt in Australia following Guadalcanal. After a stint back in Quantico training more combat photographers, he went to Guam and then to the crucible of Iwo Jima. At war's end he was serving as Photographic Officer, Fleet Marine Force Pacific, at Pearl Harbor.
Author: Ohio. General Assembly. Senate
Publisher:
ISBN:
Category : Legislation
Languages : en
Pages : 114
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Sewage as fertilizer
Languages : en
Pages : 316
Get Book Here
Book Description
