•  
  •  
 

Abstract

High flowing concrete (HFC) is defined as a concrete that exhibits a high deformability and a good resistance to segregation. The grade of workability for HFC is concrete slump flow that between 50 to 70 cm. In the research, 21statistically balanced concrete mixtures were investigated by statistical models, and discussed further the workability, strength and durability properties of concrete, which are responded by granulated ground blastfurnace slag (GGBS), Fly ash, waterbinder ratio (w/b) and superplasticizer (sp). The Box-Wilson central composite design (CCD) method is used in this study. The total binder content is 375 kg/m3 , and four independent variables such as percentage of GGBS as cement replacement (20 to 50% by mass), percentage of Fly ash as cement replacement (15 to 35% by mass), w/b (0.39 to 0.45) and percentage of SP (1.0 to 1.4 by binder mass) are used for the design of HFC mixtures. The fresh properties of mortar and concrete, mechanical properties and durability characteristics of concrete are measured. Finally, the concrete slump flow model, T50, 7-, 28- and 90-day compressive strength model, the RCP (rapid chloride permeability) model, and Carbonation model are developed successfully. The proposed response models of HFC offer useful information regarding the mixture optimization.

Download
COinS