A Study on the Influence of Coarse Aggregate on Rheological Properties of Self-Compacting Concrete

Abstract

This paper presences the influence of coarse aggregate-space coefficient on the rheological properties of self-compacting concrete (SCC). The results indicate that coarse aggregate-space coefficient has significant influence on slump flow and V-funnel flow time of SCC, when the maximum aggregate particle size is 16mm and the volume ratio of sand and motor is 0.43, meanwhile water binder ratio is 0.38. The higher the coarse aggregate-space coefficient, the lager the slump flow, the shorter the V-funnel flow time. The range of coarse aggregate-space coefficient of SCC is suitable for 1.31~1.58 under the condition of the paper. The suitable range can guarantee excellent rheological properties and stability of SCC mixture. There is little effect of coarse aggregate-space coefficient on compressive strength in this paper tests.

Rheological Behavior of Model Systems of Resource Matrix Efficient Self-Compacting Concrete

“…The problem of the widespread introduction of self-compacting concrete mixtures is their high cost due to the use of natural mineral fillers, the use of expensive superplasticizers and hyperplasticizers, fractionated aggregates [1][2][3][4][5][6]. The economic efficiency of widespread use in the construction of self-compacting concrete mixtures (especially concrete with ordinary strength) is largely leveled by an increase in the cost of concrete in comparison with traditional concrete [7][8][9][10][11][12][13]. These circumstances limit the widespread use of self-compacting concrete in construction.…”