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Author: MUHAMMAD KASIM.. PATEHA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
LE PRESENT TRAVAIL CONCERNE LA VALORISATION DE SOUS-PRODUITS INDUSTRIELS (CENDRES VOLANTES DE CENTRALES THERMIQUES) OU AGRICOLES (CENDRES DE BALLES DE RIZ) DANS L'INDUSTRIE CIMENTIERE. L'OBJECTIF PRINCIPAL EST DE TROUVER LE POURCENTAGE MAXIMAL DE CENDRE EN SUBSTITUTION AU CIMENT PORTLAND AFIN D'OBTENIR UN LIANT A LA FOIS ECONOMIQUE ET DURABLE. L'ACTIVITE POUZZOLANIQUE DE CES PRODUITS A ETE SUIVIE EN METTANT EN UVRE DES METHODES PHYSICO-CHIMIQUES (CONDUCTIMETRIE, THERMOANALYSE, DIFFRACTION DES RAYONS X, SPECTROMETRIE INFRA-ROUGE, MICROSCOPIE ELECTRONIQUES A BALAYAGE, POROSIMETRIE AU MERCURE) ET MECANIQUES. LA CONSOMMATION DE CHAUX EST MAXIMALE AVEC LES CENDRES DE BALLES DE RIZ ALORS QUE LES MEILLEURS RESISTANCES SONT OBTENUES AVEC LES CENDRES VOLANTES. LES CINETIQUES DE REACTION DE CES CENDRES SONT TOTALEMENT DIFFERENTES: ACTIVITE INITIALE TRES IMPORTANTE DES CENDRES DE BALLES DE RIZ ET PLUS PROGRESSIVE AVEC LES CENDRES VOLANTES. L'ETUDE DE DURABILITE DE MORTIERS ELABOREES AVEC CES SOUS-PRODUITS DANS DIFFERENTS MILIEUX AGRESSIFS MONTRE QU'ON PEUT FACILEMENT SUBSTITUER 30 A 50% DE CIMENT PAR DES CENDRES VOLANTES LORSQUE LE MILIEU EST MOYENNEMENT AGRESSIF ET 50% DE CIMENT PAR DES BALLES DE RIZ DANS UN ENVIRONNEMENT TRES CHLORE
Author: MUHAMMAD KASIM.. PATEHA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Book Description
LE PRESENT TRAVAIL CONCERNE LA VALORISATION DE SOUS-PRODUITS INDUSTRIELS (CENDRES VOLANTES DE CENTRALES THERMIQUES) OU AGRICOLES (CENDRES DE BALLES DE RIZ) DANS L'INDUSTRIE CIMENTIERE. L'OBJECTIF PRINCIPAL EST DE TROUVER LE POURCENTAGE MAXIMAL DE CENDRE EN SUBSTITUTION AU CIMENT PORTLAND AFIN D'OBTENIR UN LIANT A LA FOIS ECONOMIQUE ET DURABLE. L'ACTIVITE POUZZOLANIQUE DE CES PRODUITS A ETE SUIVIE EN METTANT EN UVRE DES METHODES PHYSICO-CHIMIQUES (CONDUCTIMETRIE, THERMOANALYSE, DIFFRACTION DES RAYONS X, SPECTROMETRIE INFRA-ROUGE, MICROSCOPIE ELECTRONIQUES A BALAYAGE, POROSIMETRIE AU MERCURE) ET MECANIQUES. LA CONSOMMATION DE CHAUX EST MAXIMALE AVEC LES CENDRES DE BALLES DE RIZ ALORS QUE LES MEILLEURS RESISTANCES SONT OBTENUES AVEC LES CENDRES VOLANTES. LES CINETIQUES DE REACTION DE CES CENDRES SONT TOTALEMENT DIFFERENTES: ACTIVITE INITIALE TRES IMPORTANTE DES CENDRES DE BALLES DE RIZ ET PLUS PROGRESSIVE AVEC LES CENDRES VOLANTES. L'ETUDE DE DURABILITE DE MORTIERS ELABOREES AVEC CES SOUS-PRODUITS DANS DIFFERENTS MILIEUX AGRESSIFS MONTRE QU'ON PEUT FACILEMENT SUBSTITUER 30 A 50% DE CIMENT PAR DES CENDRES VOLANTES LORSQUE LE MILIEU EST MOYENNEMENT AGRESSIF ET 50% DE CIMENT PAR DES BALLES DE RIZ DANS UN ENVIRONNEMENT TRES CHLORE
Author: Ravindra K. Dhir
Publisher: Thomas Telford
ISBN: 9780727728210
Category : Philosophy
Languages : en
Pages : 378
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Book Description
Concrete will be the key material for mankind to create the built environment of the next millennium. The requirements of this infrastructure will be both demanding, in terms of technical performance and economy, and yet be greatly varied, from architectural masterpieces to the simplest of utilities.Exploiting wastes in concrete forms the Proceedings of the one day International Seminar held during the Congress, Creating with concrete, 6-10 September 1999, organised by the concrete technology unit, University of Dundee.
Author: Roy MacLeod
Publisher: Springer Science & Business Media
ISBN: 1402054904
Category : Science
Languages : en
Pages : 292
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Book Description
This book represents a first considered attempt to study the factors that conditioned industrial chemistry for war in 1914-18. Taking a comparative perspective, it reflects on the experience of France, Germany, Austria, Russia, Britain, Italy and Russia, and points to significant similarities and differences. It looks at changing patterns in the organisation of industry, and at the emerging symbiosis between science, industry and the military.
Author: Leslie Rainer
Publisher: Getty Publications
ISBN: 1606060430
Category : Architecture
Languages : fr
Pages : 438
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Book Description
Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Author: UNESCO
Publisher: UNESCO Publishing
ISBN: 9231003550
Category :
Languages : en
Pages : 112
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Book Description
Author: Linda Strande
Publisher: IWA Publishing
ISBN: 1780404735
Category : Technology & Engineering
Languages : en
Pages : 428
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Book Description
It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
Author: Irving Kett
Publisher: CRC Press
ISBN: 9780849322778
Category : Technology & Engineering
Languages : en
Pages : 228
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Book Description
The Romans used an early type of concrete made with natural pozzuolanic cement more than 2,000 years ago. Today, Portland Cement Concrete is the most important material of construction. Yet few books, if any, exist that offer an in-depth analysis of the mixing and testing methods of this vital hydraulic cement. Until now that is. Engineered Concrete: Mix Design and Test Methods helps engineers, as well as laboratory technicians, grasp a better understanding of Portland Cement and Portland Cement Concrete. The book is divided into several sections, with the first, Mix Design Procedures, explaining how concrete batches are designed, mixed, and measured for various consistencies. Another section details the tests of the primary component materials of concrete other than water - namely Portland Cement, aggregates, and mortar - while the final section includes some of the fundamental concrete testing procedures for different strength parameters in conformity with the standards of the American Society for Testing Materials. While focusing solely on Portland Cement, the book also includes information on other hydraulic cementitious materials and additives because of their modern applications. Solidly researched and written, Engineered Concrete: Mix Design and Test Methods provides a clear understanding of mix design and testing of Portland Cement Concrete. As every civil engineer knows, it is the most versatile and important material of construction, and will probably remain so as far into the future as we can see.
Author: Willem Willems
Publisher:
ISBN: 9789088903861
Category : Business & Economics
Languages : en
Pages : 434
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Book Description
Water is vital for life, and its availability has been a concern for mankind throughout the ages. Its presence has always been ascertained in a variety of ways and the development of human society everywhere is connected with various forms of water management. Man also needed to manage water to find protection from its dangers and the need for that is increasing. In the coming decades, the impact of climate change is expected to intensify floods and droughts, affect groundwater resources, raise sea levels, increase pollution and enhance the frequency and magnitude of disasters. Societies around the world are challenged to adapt to these threats to ensure water security, economic prosperity and environmental and cultural sustainability. This book deals with the heritage of water management and the use that was made of water, as well as the impact of water management on heritage. An example of the former may be an ancient irrigation system in the Filipines or in the Middle East that still functions today, while the latter may reflect the importance of maintaining groundwater levels for the preservation of organic remains on archaeological sites or of wooden piles underneath standing buildings. In either case the papers in this book reflect the dynamic nature of water, and hence the equally dynamic relation between water management and heritage. This publication follows up on a Heritage and Water conference in Amsterdam, the first of its kind. Its main purpose is to credibly present the importance and value of heritage and historical experience for water and sustainable development, and vice versa, present the importance of water management for the protection of heritage. It presents evolving insights and concepts about Water and about Heritage from a variety of disciplines, policy and public perspectives illustrated with cases studies and aims to connect decision makers with experts such as engineers, archaeologists, historians, geographers, ecologist and landscape architects
Author: Claudine Picq
Publisher: Bioversity International
ISBN:
Category : Agricultural productivity
Languages : en
Pages : 806
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Book Description
Importance de la banane sur les plans economique et alimentaire; Diversite et dynamique des filieres; Organisation des marches et commercialisation; Systemes de productions/production systems.
Author: International Livestock Research Institute
Publisher: ILRI (aka ILCA and ILRAD)
ISBN: 9789291460038
Category : Animal industry
Languages : en
Pages : 268
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Book Description
Policy concepts; Identification of policy issues; Production systems, supply and demand; Market, price and trade policies; Marketing and distribution systems; Budget and manpower planning; Land tenure police for the livestock sector; Policy analysis report writing and communication; Livestock production and marketing in alphabeta - a case study.
