Cement reinforcing thermoplastic resin reinforcement and reinforced cement mixtures

#1. Field of the Invention

#The present invention relates to cement reinforcing thermoplastic resin reinforcement and reinforced cement mixtures and, more particularly, to cement reinforcing thermoplastic resin reinforcement realizing crack-free cement products and reinforced cement mixtures using such thermoplastic resin reinforcement.

#2. Description of the Related Art

#FIG. 1(A) is a perspective view showing the cement reinforcing thermoplastic resin reinforcement according to the present invention, and FIG. 1(B) is a perspective view of its long body.

#FIG. 2 is a vertical section view showing an embodiment of the long body.

#FIG. 3 is a perspective view showing another embodiment of the long body.

#The cement reinforcing thermoplastic resin reinforcement 1 according to the present invention consists of a filamentary body 2 on which numerous bulges 3, 3 are formed spaced in the longitudinal direction as shown in FIG. 1(A).

#Such thermoplastic resin reinforcement 1 is formed by uniaxially stretching the long body 4 made of thermoplastic resin provided spaced with numerous irregularities 5, 5 in the longitudinal direction to form the filamentary body 2 having the bulges 3, and by cutting thus obtained filamentary body into pieces of a predetermined length. The numerous irregularities 5, 5 may be built on the long body 4 made of thermoplastic resin 4 as shown in FIG. 3.

#The long body 4 may be of single layer construction as shown in FIG. 5, and may also be of multi layer construction consisting of an outer layer 7 made of thermoplastic resin of higher-melting point and an inside layer 8 made of thermoplastic resin of lower-melting point. For the long body 4 of multi layer construction, the two layers have only to be so structured that the outer layer is positioned on the surface side of the long body 4, and, therefore, may be either of sheath core construction in which the outer layer 7 covers the inside layer 8 as shown in FIG. 6(A), or of sandwich construction in which the outer layer is mounted on both sides of the inside layer as shown in FIG. 6(B).