research and applications to advance our knowledge and
Concluding Remarks and Recommendations
Autogenous volume expansion of MgO concrete is stable
and occurs mainly at late ages. The delayed autogenous
expansion roughly matches the shrinking process of dam mass
concrete as its temperature drops, and thus is adequate to
prevent thermal cracking of mass concrete during
construction. MgO concrete is compatible with RCC
technology for the construction of dams. Using MgO concrete
can result in simplification of temperature control measures as
well as shorten the construction period—allowing for early
operation of the project. These advantages will bring
significant economic, social, and environmental benefits.
Combining MgO concrete with RCC for dam construction
amplifies the advantages of both technologies, so further study
of MgO concrete should be promoted.
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48 JULY 2019 | Ci | www.concreteinternational.com
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Selected for reader interest by the editors.
Chongjiang Du is a Key Expert in dam
engineering with Tractebel Engineering
GmbH, Bad Vilbel, Germany. He received
his BS in civil engineering from Dalian
University of Technology, Dalian, China, and
his MS from Tsinghua University, Beijing,
China. He worked as an Assistant Professor
at the University of Karlsruhe, Germany,
where he was awarded his Dr.-Ing. title.