| Autor: |
Li LG; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China., Ng PL; Department of Civil Engineering, The University of Hong Kong, Hong Kong 999077, China.; Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania., Zeng KL; China Jinmao Holdings Group Limited, Guangzhou 510000, China., Xie HZ; School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China., Cheng CM; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China., Kwan AK; Department of Civil Engineering, The University of Hong Kong, Hong Kong 999077, China. |
| Abstrakt: |
Though previous studies have indicated that the fresh behaviours of plain mortar/concrete are mainly governed by the average water film thickness (AWFT), whether the concept of AWFT is also applicable to fibrous mortar/concrete still needs to be explored. Furthermore, for fibrous mortar/concrete, it is obvious that the fibres added also have certain effects on the fresh behaviours. In two previous studies on basalt fibre-reinforced mortar (BFRM), the integral effects of the AWFT and fibre dosage as well as the integral effects of the AWFT and fibre length were individually investigated. In this study, a fibre factor (FF) defined as the fibre volume multiplied by the fibre aspect ratio was employed and 24 extra mortar groups were tested. A total of 68 mortar groups were applied in numerical analysis. The results of the regression analysis yielded good correlations of the workability, fluidity, cohesiveness, and adhesiveness of BFRM with the AWFT and FF, suggesting that the AWFT and FF are together the governing parameters controlling the fresh behaviours of BFRM. Hence, the AWFT and FF may be used to develop a model for the fresh properties of BFRM. |
