Envisaging the Application of Hydraulic Engineered Cementitious Composites (HECC) in Hydraulic Structures

LI Jia-zheng

doi:10.11988/ckyyb.20220228

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Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (2) : 1-6. DOI: 10.11988/ckyyb.20220228

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Envisaging the Application of Hydraulic Engineered Cementitious Composites (HECC) in Hydraulic Structures

LI Jia-zheng^1,2

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Abstract

Engineered Cementitious Composite (ECC) was first designed and proposed by Professor Li of the University of Michigan in the 1990s, and has been widely used in industrial and civil construction in recent years. Changjiang River Scientific Research Institute proposed the concept of Hydraulic Engineered Cementitious Composites (HECC) which is suitable for hydraulic construction.According to the functional requirements of different hydraulic structures, HECC should have the properties of mixtures and molding methods designed on demand, medium strength,low elastic modulus,elongation designed on demand,strong thermal stability,high durability,controllable crack widths and a wider choice of raw materials. On this basis, HECC is proposed to be applied in hydraulic structures such as the new dam foundation gallery of rockfill dams, the new anti-seepage face slabs of face-rockfill dams, the new core wall structures of rockfill dams, and the anti-seismic and anti-cracking structures of the foundation constraint area of arch dams. In addition, the future research direction of HECC is prospected.

Key words

HECC / medium strength / controllable crack width / high durability / hydraulic structure

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LI Jia-zheng. Envisaging the Application of Hydraulic Engineered Cementitious Composites (HECC) in Hydraulic Structures[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(2): 1-6 https://doi.org/10.11988/ckyyb.20220228

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