Description

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ICOLD Bulletin 177 'Roller-Compacted Concrete Dams' presents the state-of-the-art on roller-compacted concrete technology for dams, incorporating the advances of the RCC technology for dams over the last 15 years since the previous Bulletin on the topic was released in 2003. Hence, the present ICOLD Bulletin 177 supersedes ICOLD Bulletin 126 ('Roller-compacted concrete dams - State of the art and case histories', published in 2003) and ICOLD Bulletin 75 ('Roller-Compacted Concrete for Gravity Dams' published in 1989). While roller-compacted concrete technology could have still been considered a new technology in 2003, it is now true to say that construction by roller-compaction has become the standard approach for large concrete gravity dams.

This Bulletin addresses all aspects of the planning, design, construction and performance of RCC in dams. Mixture proportioning and quality control are discussed and a comprehensive listing of references is included. Many aspects of RCC in dams have become better understood since the publication of Bulletin No 126 and the present Bulletin contains less information on the particular approaches applied in different countries, but includes more comprehensive information particularly in relation to design, mixture proportioning and construction. With greater understanding, it has further been possible to highlight more definitively the requirements of successful RCC dams, as well as the pitfalls and difficulties that can be associated with RCC dam design and construction.

Le Bulletin CIGB 177, intitul Barrages en B ton Compact au Rouleau pr sente les derni res avanc es en mati re de technologie du b ton compact au rouleau pour les barrages int grant les progr's de la technologie BCR pour les barrages au cours des 15 derni res ann es, depuis que le dernier bulletin sur le sujet a t publi en 2003. Par cons quent, le bulletin 177 remplace le bulletin 126 ( Barrages en b ton compact au rouleau - Technique actuelle et exemples , publi en 2003) et le bulletin 75 ( B ton compact au rouleau pour barrages-poids - Technique actuelle publi en 1989). Alors que la technologie du BCR pourrait encore tre consid r e comme une nouvelle technologie en 2003, il est maintenant vrai de dire que la construction par le compactage par rouleaux est devenue l'approche standard pour les grands barrage-poids en b ton.

Ce bulletin aborde tous les aspects de la planification, de la conception, de la construction et de la performance du BCR dans les barrages. Le dosage du m lange et le contr le de la qualit sont discut's et une liste exhaustive des r f rences est incluse. De nombreux aspects du BCR dans les barrages sont mieux compris depuis la publication du Bulletin no 126. Le pr sent bulletin contient moins d'informations sur les approches particuli res appliqu es dans diff rents pays, mais comprend des informations plus compl tes notamment en ce qui concerne la conception, le dosage du m lange et la construction. Avec une plus grande compr hension, il a t possible de mettre en vidence les exigences des barrages en BCR r ussis, ainsi que les pi ges et les difficult's qui peuvent tre associ's la conception et la construction du barrage en BCR.

About the Author

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The Commission Internationale des Grands Barrages (CIGB) / International Commission on Large Dams (ICOLD) is a non-governmental International Organization which provides a forum for the exchange of knowledge and experience in dam engineering.The Organization leads the profession in ensuring that dams are built safely, efficiently, economically, and without detrimental effects on the environment. Its original aim was to encourage advances in the planning, design, construction, operation, and maintenance of large dams and their associated civil works, by collecting and disseminating relevant information and by studying related technical questions.Since the late sixties, focus was put on subjects of current concern such as dam safety, monitoring of performance, reanalysis of older dams and spillways, effects of ageing and environmental impact. More recently, new subjects include cost studies at the planning and construction stages, harnessing international rivers, information for the public at large, and financing.