Drying Shrinkage Properties of Concretes With Several Kinds of Aggregates and the Influence of Specific Surface Areas of the Aggregates

Investigations into Volumetric Stability of Aggregates and Shrinkage of Concrete as a Composite

“…They indicated that the role of aggregate in concrete is not only to confine volumetric change; it also contributes to concrete shrinkage by shrinking itself. Recently, Tatematsu et al (2001) and Imamoto et al (2006) also studied concrete shrinkage from the viewpoint of aggregate properties and reached the same conclusions as Goto and Fujiwara (1979).…”

“…It has been reported that aggregate shrinkage as well as elastic modulus may influence the volumetric change of concrete (Snowdon and Edwards 1962;Hansen and Nielsen 1965;Goto and Fujiwara 1979, Tatematsu et al 2001, Imamoto et al 2006. In this section, an aggregate shrinkage model is proposed and implemented in the multi-scale constitutive model.…”

“…Imamoto et al (2006) reported that the amount of drying shrinkage of concrete is strongly related to the specific surface area of the sand and gravel. Goto and Fujiwara (1979) Fig.…”

“…Fig. 18 Computed results of drying shrinkage considering aggregate shrinkage (Experimental data: Imamoto et al 2006).…”

“…It is well known that aggregate properties strongly affect the time-dependent mechanical properties of concrete, such as shrinkage and creep (Troxell et al 1958;Snowdon and Edwards 1962;Hansen and Nielsen 1965;Goto and Fujiwara 1979;Neville 1970Neville , 1995Arai et al 1999Arai et al , 2000Tatematsu et al 2001;Imamoto et al 2006). Recently, it was reported that a prestressed reinforced concrete (PRC) bridge in Japan had suffered severe cracking of RC member surfaces because shrinkage was much greater than predicted at the design stage.…”