13 research outputs found
Experimental and numerical analysis of short sisal fiber-cement composites produced with recycled matrix
"Published online: 02 Jan 2017"The proper use of renewable or recycled source materials can contribute
significantly to reducing the environmental impact of construction industry. In this
work, cement based composites reinforced with natural fibers were developed and their
mechanical behavior was characterized. To ensure the composite sustainability and
durability, the ordinary Portland cement matrix was modified by adding metakaolin and
the natural aggregate was substituted by 10% and 20% of recycled concrete aggregate.
Compression and splitting tensile tests indicated that mechanical strength did not seem
to be affected by recycled content. Flat sheets were cast in a self-compacted cement
matrix and bending tests were performed to determine the first crack, postpeak strength
and cracking behavior of the composites. The use of short sisal fiber as reinforcement of
recycled cement matrices results in a composite with multiple cracking and increment of
strength after first crack. The modeling of composites using finite element method
allowed to determine the tensile stress-strain behavior of material and to design possible
applications of this new sustainable material.This research was supported by CAPES (PVE Program: Project 047/2012) and CNPqinfo:eu-repo/semantics/publishedVersio