A simple mix design method for self-compacting concrete

Department of Construction Engineering, National Yunlin University of Science and Technology, Touliu, Yunlin 640, Taiwan
Cement and Concrete Research (Impact Factor: 3.85). 12/2001; DOI: 10.1016/S0008-8846(01)00566-X

ABSTRACT This paper proposes a new mix design method for self-compacting concrete (SCC). First, the amount of aggregates required is determined, and the paste of binders is then filled into the voids of aggregates to ensure that the concrete thus obtained has flowability, self-compacting ability and other desired SCC properties. The amount of aggregates, binders and mixing water, as well as type and dosage of superplasticizer (SP) to be used are the major factors influencing the properties of SCC. Slump flow, V-funnel, L-flow, U-box and compressive strength tests were carried out to examine the performance of SCC, and the results indicate that the proposed method could produce successfully SCC of high quality. Compared to the method developed by the Japanese Ready-Mixed Concrete Association (JRMCA), this method is simpler, easier for implementation and less time-consuming, requires a smaller amount of binders and saves cost.

  • Construction and Building Materials 09/2014; 66:685-691. DOI:10.1016/j.conbuildmat.2014.06.008 · 2.27 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Self compacting concrete (SCC) is a highly workable concrete that can flow through densely reinforced complex structural elements under its own weight and adequately fill all voids without vibration or mechanical consolidation. Effective use of industrial waste products in concrete gains many economic, environmental, and social benefits rather than disposing of it as waste. The objective of this study is to investigate the effect of blast furnace slag as a partial replacement for coarse aggregate in M20, M30 and M40 grades of fly ash blended self compacting concrete. The coarse aggregate was replaced at a range of 30% by blast furnace slag aggregate and the various fresh and hardened concrete properties were determined and compared. From the results, it is recommended that 30% of slag aggregate can be effectively utilized for various self compacting concrete applications.
    12/2013; 831:18-22. DOI:10.4028/
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the recent years, construction and demolition waste management issues have attracted the attention from researchers around the world. In the present study, the potential usage of recycled aggregate obtained from crushed demolition waste for making self compacting concrete (SCC) was researched. The barriers in promoting the use of recycled material in new construction are also discussed. In addition, the results of an experimental study involving the use of recycled concrete aggregate as coarse aggregates for producing self-compacting concrete to study their flow and strength characteristics are also presented. Five series of mixture were prepared with 0, 25, 50, 75, and 100 % coarse recycled aggregate adopting Nan Su’s mix proportioning method. The fresh concrete properties were evaluated through the slump flow, J-ring and V-funnel tests. Compressive and tensile strengths were also determined. The results obtained showed that SCC could be successfully developed by incorporating recycled aggregates.
    09/2014; 94(3):179-185. DOI:10.1007/s40030-014-0051-5