Evaluation of fiber reinforced nanostructured perlite-cementitious surface compounds for building skin applications

Using of Microsilica for Strength Improvement of Fiber Reinforced Cementitious Surface Compounds

“…Short fibers can bridge the cracks in the matrix and provide resistance to crack propagation before being pulled out or stressed to rupture. The effect of short polypropylene fibers loading as artificial fibers source on the indirect tensile strength and fracture resistance of nanostructured perlite cementitious surface compounds had been studied [8]. An increase of 34% in the indirect tensile strength was achieved at PP fiber loading of 2%.…”

“…The samples were kept in molds for 24 h, and then unmolded and allowed to cure in water for 7 days. An optimum percentage of 2% short fibers addition as recommended by Aglan et al [8] was used to get the fiber reinforced cementitious surface compounds after obtaining the optimum percentage of UFS that used as cement replacement. In order to get the short fibers, both the natural DP and artificial PP were cut to lengths up to 20 mm.…”

“…After obtaining the optimum percentage of UFS that used as cement replacement which was 5%, an optimum percentage of 2% short fibers addition as per Aglan et al [8] was used to prepare and evaluate the fiber reinforced cementitious surface compounds.…”

“…Therefore, microor nanopozzolanic particles were incorporated as active substitutions of OPC to compensate the mechanical strength degradation by improving toughness and mechanical properties reducing the size and amount of defects in cementitious material leading to better performance. Varieties of fibrous materials had been used for improving toughness and tensile strength performance of cementitious surface compounds and concrete [8][9][10][11][12][13]. Such materials combined good thermal resistance with enough mechanical strength and very low manufacturing costs.…”

“…The use of lightweight cementitious surface compounds with high thermal resistivity, in building envelopes, reduces energy consumption and/or enhances the indoor comfort. The incorporation of lightweight particulate insulation in cementitious material produces lightweight 2 ISRN Materials Science compounds with poor mechanical properties and toughness [8]. The basic reasons for the poor mechanical performance of these materials are the weak interfacial adhesion between the cement binder and these insulating particulates as well as the inherit voids and discontinuities in the mix.…”