Flow-based pultrusion of continuous fibers for cement-based composite material and additive manufacturing: rheological and technological requirements

The vast majority of applications extrusion-based concrete additive manufacturing deal with unreinforced mortar. lack reinforcement is a serious limitation for the industrial development 3d printed concrete, because brittleness and tensile strength In this paper, new method inspired by pultruded composite manufacturing, called flow-based pultrusion (FBP), described used. principle that continuous fiber rovings are impregnated pulled matrix flow, avoiding motorisation, increasing apparent yield stress mortar consequently its usability. hardened resulting material, anisotropic unidirectionally homogenously reinforced. For such ratio an important material parameter relates to specific process variables: roving type, count, output diameter. This article further investigates effect percentage on process. It also highlights technical requirements provide first specifications pultrusion.