Effects of Different Lightweight Functional Fillers for Use in Cementitious Composites

International Journal of Concrete Structures and Materials

Table 1 Physical characteristics of lightweight fillers.

Description	Bulk density (kg/m³)	BET surface area (m²/g)	Color	Iso-static crush strength^a (MPa)
Glass micro-sphere GMS15	150	35.62	White	2.07
Glass micro-sphere GMS38	380	95.71	White	27.58
Fly ash cenosphere	720	6.02	Grey	70–140

^aIsostatic crush strength denotes the stress at which the average bulk of material has 90% or greater survival. (3M energy and advanced materials division 2007).