| Dams


Plinth Internal plinth construction necessitates effective coordination and meticulous planning with regard to grouting and core placement.


Asphalt Core The core is internal, featuring a distinctive design for placement. No joints or rebars are employed.


Parapet Walls ACRDs typically do not include parapet walls. This design requires a higher volume of rockfill.


Industrial Facilities A specialized batching plant is utilized for the production of a self-healing asphalt core. Equipment is deployed for the passage of trucks over the core and transitions. An asphalt laboratory is an essential component. Conventional concrete batching plants may be required for certain aspects of construction.


Seismic Activity ACRDs are designed to possess high seismic resistance, ensuring their structural integrity in the face of seismic events.


Concluding Remarks Concrete Face Rockfill Dams (CFRDs) and Asphalt


Core Rockfill Dams (ACRDs) emerge as viable choices in regions necessitating extensive rock excavation and where specialized construction equipment is accessible for these types of dam projects. What’s particularly intriguing is the consideration of asphaltic core dams in the feasibility assessments by Latin American nations, especially when suitable equipment is at their disposal for material placement. This proactive approach highlights a forward-thinking perspective in harnessing advanced dam construction techniques for the region’s benefit.


Figure 9: ACRDs – grout curtain at center line plinth foundation (HOEG, K., 1993) References


[1] Concrete Face Rockfill Dams Book– Cruz, P.T., Materón, B., Freitas, M. CRC Press Taylor & Francis Group (2009, Current English Edition Editora Signer, Ltda, São Paulo).


[2] Calcina, A.M. Jiménez, G.N. Jeiss, Pinto, W.M., C.L. “Chagllacfrd-Main Design Features” Chincold, Kunming, China, October 2013.


[3] Materón, B.; Cruz, P.; Freitas, M.; et al; CBDB – Boletim Técnico CBDB-002 (CT-06) – Diretrizes Técnicas para Barragens de Enrocamento com Face de Concreto (BEFC) e com Núcleo de Asfalto (BENA) – Vários Autores – 2017 (Portuguese).


About the authors Bayardo Materón is a consultant engineer


working in different projects with rockfill compacted dams. He has been involved with many leading engineering organizations on design and construction or rockfill dams and hydro projects. Member of several boards of consultants for different projects under construction. He has participated in the design and construction of the world’s highest CFRDs. Manoel S Freitas Jr is a Consultant Geotechnical engineer with large experience on Hydro project - design and construction manager. Participation in construction supervision activities on large Dams Hydropower projects. Chief Engineer of Civil construction contract on Tianshengqiao 1 (TSQ.1) Concrete face rockfill dam and Spillway, in P. R. of China. Inter American Bank – BID as independent consultant in Hydropower projects on EPC Contracts (Engineering, Procurement, Construction). World Bank consultant in water supply projects, monitoring and Dam safety Analysis in Brazil.


[4] Cooke, J. B., Sherard, J. L. (Eds.). Concrete Face Rockfill Dams – Design, Construction, and Performance. Proceedings ASCE Symposium, Detroit, USA, 1985.


[5] Cooke, J.B., Sherard, J.L. Concrete Face Rockfill Dam: I. Assessment; II. Design. Journal of Geotechnical Engineering, ASCE, V.113, N.10, 1987.


[6] Experiência Brasileira no Controle de Construção de Barragens de Enrocamento com Núcleo de Asfalto; Afonso P. F. Carvalho, CBDB, September 2021. Jornada Técnica. (Portuguese).


[7] “Asphalt Cores: Making Embankment Dams Truly Watertight, D. Muller, Walo International AG, Switzerland; D. Wilson, Walo UK, Hydropower & Dams Issue One 2018.


[8] Materón, B., Chincold 2013 Annual Meeting; 3rd International Symposium on Rockfill Dams.


[9] Barragens com Núcleo de Concreto Asfáltico–Guimarães, R. C.–Tese de Doutorado em Geotecnia–Publicação: GT. D–076/12. [10] Hoeg, K., 1993, Asphaltic Concrete Cores for Embankment Dams.


[11] Materón, B. Innovative Design and Construction Methods for CFRDs. In XXII International Congress on Large Dams, Proceedings, Barcelona: ICOLD 2006.


[12] Materón, B., Sharing International Experiences in CFRD – International Water Power and Dam Construction, September – 2012.


[13] Materón, B., Evolution in Slab Construction for the Highest CFRDs. Water Power and Dam Construction, April 1992.


[14] Vahid A., Asphalt Concrete Cores for Embankment Dams; 2nd International Dam World Conference, Lisbon, Portugal, 2015.


www.waterpowermagazine.com | November 2023 | 39 Storglomvatn dam, 125m – Norway, 1997 6 5 1 1.5 4b 4a


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Concrete sill Grout curtain


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Storvatn dam, 90m – Norway, 1987 1 1.5 1 5 4b


Concrete sill Grout curtain


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