• Perrot, A.
• Sonebi, Mohammed
• Amziane, S.
• Rubio, M.

Abstract

Theaimofthispaperistoinvestigatetheeffectofdifferent mixcompositionon mechanical properties of a printable mortar. For the mix design, two binders such as fly ash (FA), and silica fume (SF) were used with Portland cement II and sand for a water/binder ratio of 0.50.Sisal fibres (SFR), superplasticiser(SP), and viscosity modifying agents VMA composed of diutan gum and nano-clay (NC) were used in the investigation.New method was proposed to take cubes from fresh layers’ mortar. The tensile strength was obtained by using dumb bell test.All results of the compressive strengths of layerswerelowerthanthestandard cast cubesofall mixes by upto 30%, this can be attributed to the fact that the layered cubes are not homogeneous and were not compacted (entrapped air).The addition of silica fume didn’t not affect too much the compressive strength.The addition of more fibres ledtoaslightlyreductionofcompressiveandflexuralstrengths duetotheair entrapped, but it improved the direct tensile strength.SP didn’t affect significantly the compressive strength.

Topics

• strength
• layered
• cement
• viscosity
• tensile strength