The Use of Ultra-high Volume of Lime Stone Calcine Clay to Produce Basalt Fiber Reinforced Strain Hardening Cementitious Composites

One of the remarkable attributes of strain hardening cementitious composites (SHCCs) is the hardening region of the material. Because of this even if the material is suddenly overloaded, the structure may still be functional. One of the major component which drives the hardening behavior of the material is the fiber. The problems with polymer fibers which is the commonly used for making SHCCs is that they have a low melting point. Unlike polymer fibers, basalt fibers have high melting point thus, more resistant to fire. In this work, we investigated usage of basalt fibers in making SHCCs. More specifically, SHCCs developed through a combination of basalt fiber with ultra high volume LCC cement blend (UHVLC3-BF-SHCC). We investigated the effect of composition of ultra high volume of SCM in the binder on the mechanical performance UHVLC3-BF-SHCC. We observe that UHVLC3-BF-SHCC has ~ 1% tensile strain while cracks widths are controlled to very value of 20 microns and below. By improving mechanical properties, UHVLC3-BF-SHCC may be an attractive green SHCC for applications subjected to high temperatures.