he combined use of SAP and other additives has been also
investigated [2,4,12–15]. Small amounts of nanosilica could offset
the negative effect of SAP on compressive strength, but the flexural
strength was not fully compensated [2]. Even if the combination
between SAP particles and colloidal silica induces positive effects on the compressive strength, the flexural strength tends to
decrease [12]. For engineered cementitious composites (ECC) specimens
with 50% fly ash, the tensile strain capacity incorporating
SAP particles can increased by about 80%