Effect of aggregate type on the behavior of thermally treated self-compacted concrete

الملخص EN

This paper was conducted to determine the physic-mechanical and microstructure characteristics of self-compacted Concrete (SCC) with different types of coarse aggregate (Basalt, Gravel or Dolomite ) exposed to high temperatures for different exposure times.

The changes in the physico-mechanical properties of SCC due to the exposure to high emperature were examined.

The evaluation of fresh SCC properties was based on the results of slump-flow test, J-ring test and V-funnel flow test.

The change in mechanical properties, porosity, absorbtivity, bulk, and real density with temperature at different time of exposure were also recorded.

The phase composition and microstructure were investigated by differential scanning calorimetry (DSC).

The experimental results showed that the aggregate type has a clear effecton the fresh properties of SCC and also the high temperature has a clear effect on both physico-mechanical and mineralogical composition of different SCC mixes.