Determinar la capacidad de fuerza a tensión en los entrenudos de estructuras en guadua angustifolia kunth, utilizando polipropileno de alta resistencia (PP) como material de relleno para conexiones con perno.

Abstract

This project studies the tensile strength of two types of connections in Guadua Angustifolia Kunth with recycled high-strength polypropylene (PPR), with threaded rod No 3 and another with threaded rod No 4. For the connection with threaded rod were performed 20 standard tensile test until those tend to buckling and sagging with the compressive stress. The addition of PPR for the threaded rod connection provided a strength lower than stablished by the regulation for filled with cement mortar (according to NSR-10, Title G-12). A comparison was made in weight and cost, resulting in that although the PPR has a lower specific weight than the cement mortar, it is more expensive. When opening the connections in Guadua tested, it was discovered that the filling in PPR does not have adhesion with the steel, nor with the Guadua; In addition, it is evidenced that the steel was the first to buckling and sagging, and next the Guadua parallel to the fiber, while the filling in PPR does not suffer any deformation.