EXTRUDED, FIBER REINFORCED CEMENT PRODUCTS WITH WOOD PROPERTIES AND ULTRA HIGH STRENGTH, AND METHODS FOR PRODUCING THEM

摘要

1. A cement composite product for use as a substitute for lumber, comprising: a cured cement composition containing hydraulic cement, a rheology modifier and fibers substantially homogeneously distributed in the cured cement composition and included in an amount of more than about 10% of the dry volume of the cured cement compositions, wherein said cured cement composition has a flexural strength of at least about 1,500 f / d with a density of less than about 1.3 g / cm 2. The cementitious composite product according to claim 1, further comprising at least one reinforcing element selected from the group consisting of reinforcement, wire, mesh and web at least partially encapsulated in the cementitious composition. The cement composite product according to claim 2, wherein the reinforcing element is bonded to the cement composition by a bonding agent. The cement composite product according to claim 1, wherein the fibers are included in an amount of more than about 15% of the dry volume of the cement composition. The cement composite product according to claim 1, wherein the fibers are included in an amount of more than about 20% of the dry volume of the cement composition. The cement composite product according to claim 1, which is a construction product, that is, a substitute for a construction product from lumber. The cement composite product of claim 1, wherein the cured cement composition has a flexural strength of at least about 2000 psi. The cement composite product of claim 1, wherein the cured cement composition has a flexural strength of at least about 3000 psi. The cement composite product according to claim 1, wherein the cured cement composition has a flexural strength, as