morphological, activated and microaggregate effects. The three effects are relative each other.
This shows that the morphological effect is the important
aspect of fly ash effects. In this paper, it will be discussed
emphatically. The activated and microaggregate effects will
be analyzed in other papers.
The morphological effect means that in concrete, mineral-powdered materials produce the effect due to the
morphology, structure and surface property of the particle
and the particle size distribution. From the influence of fly
ash on the properties of cement-based materials, the morphology effect includes three aspects: filling, lubricating
and well distributing. These roles depend on the shape, size
distribution, etc., of fly ash and influence many properties
of concrete