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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Use of High-Range Retarder-Plasticizer for Roller-Compacted Concrete of the Three Gorges Project in China
Author(s): Liang Wenquan, Lian Huizhen, He Zhen and Li Yajie
Publication: Special Publication
Appears on pages(s): 835-854
Keywords: Plasticizers; retardants; roller-compacted concrete; tests
Abstract:Polybasic organic phosphate and lignosulphonate were combined in appropriate proportions to be a kind of high-range retarder-plasticizer(KM) for use of higher temperatures. Various retarders have been used in ordinary concrete and roller-compacted concrete(RCC)for testing under 45 “C and 25% relative humidity. Rheology and time of setting of fresh concrete and mechanical properties of hardened concrete, allowance of exposure time of bond between two construction layers of RCC,etc. were investigated. Simulated testing for Three Gorges Project was also carried out by testing a t the Development General Co. and the Testing Center of Gezhouba group.
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