Compact reinforced composite
First Claim
1. A shaped article comprising a matrix (A) with a reinforcement (B) being a composite structure comprising a a cement-based matrix selected from a cement paste, mortar and concrete made from a cement selected from portland cement and refractory cement (C) which is reinforced with reinforcing bodies (D) in the form of fibers, the transverse dimension of the reinforcement B being at least 5 times as large as the transverse dimension of the fibers D, at least one of the group consisting of the article, the matrix A and the base matrix C having high stiffness in any direction as defined by at least one of the following criteria:
- (1) the modulus of elasticity in any direction being at least 30,000 MPa, or(2) the resistance to compression in any direction being at least 80 MPa,the fibers D being present in a volume concentration of at least 4%, based on the volume of the matrix A, the volume concentration of the reinforcement B in the tensile zone or tensile zones of the article being at least 5%.
3 Assignments
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Accused Products
Abstract
A compact reinforced composite comprising a matrix (A) with a reinforcement (B) embedded therein, the matrix (A) being a composite structure comprising a base matrix (C) which is reinforced with reinforcing bodies (D) in the form of fibers. The transverse dimension of (B) being at least 5 times as large as the transverse dimension of (D).
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Citations
61 Claims
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1. A shaped article comprising a matrix (A) with a reinforcement (B) being a composite structure comprising a a cement-based matrix selected from a cement paste, mortar and concrete made from a cement selected from portland cement and refractory cement (C) which is reinforced with reinforcing bodies (D) in the form of fibers, the transverse dimension of the reinforcement B being at least 5 times as large as the transverse dimension of the fibers D, at least one of the group consisting of the article, the matrix A and the base matrix C having high stiffness in any direction as defined by at least one of the following criteria:
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(1) the modulus of elasticity in any direction being at least 30,000 MPa, or (2) the resistance to compression in any direction being at least 80 MPa, the fibers D being present in a volume concentration of at least 4%, based on the volume of the matrix A, the volume concentration of the reinforcement B in the tensile zone or tensile zones of the article being at least 5%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A shaped article comprising a matrix (A) with a reinforcement (B) being a composite structure comprising a a cement-based matrix selected from a cement paste, mortar and concrete made from a cement selected from portland cement and refractory cement (C) which is reinforced with reinforcing bodies (D) in the form of fibers, the transverse dimension of the reinforcement B being at least 5 times as large as the transverse dimension of the fibers D, at least one of the group consisting of the article, the matrix A and the base matrix C having high stiffness in any direction as defined by at least one of the following criteria:
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(1) the modulus of elasticity in any direction being at least 30,000 MPa, or (2) the resistance to compression in any direction being at least 80 MPa, the fibers D being present in a volume concentration of at least 2%, based on the volume of the matrix A, the volume concentration of the reinforcement B in the tensile zone or tensile zones of the article being at least 5%, the article showing at least one of the following qualities I, II, III; (I) a large tensile strain capacity with retention of substantial coherence of the article as defined by the tensile zone of the article having a tensile strain capacity of at least 0.5 mm/m, the article retaining substantial coherence during the straining as defined by the absence of any cracks passing the reinforcement B, or by any damage in the tensile zone in the form of fine cracks passing the reinforcement B having a width of at the most 0.2 mm, with the proviso that the ratio between the crack width and the smallest transverse diameter of the reinforcement B is at the most 0.02, (II) a large tensile load capacity (referring to stresses in the tensile zone of the article) defined by the tensile load capacity fulfilling at least one of the following conditions (a), (b), and (c); (a) under conditions of substantially elastic behavior, the tensile load capacity of the article corresponds to a tensile stress of at least 50 MPa, with retention of coherence during the straining as defined by the tensile zone of the article having a tensile strain capacity of at least 0.5 mm/m, the article retaining substantial coherence during the straining as defined by the absence of any cracks passing the reinforcement B, or by any damage in the tensile zone in the form of fine cracks passing the reinforcement B having a width of at the most 0.2 mm, with the proviso that the ratio between the crack width and the smallest transverse diameter of the reinforcement B is at the most 0.02, (b) under yielding, the tensile load capacity of the article corresponds to a tensile stress of at least 70 MPa, with the retention of coherence as defined by the absence of any cracks passing the reinforcement B, or by any damage in the tensile zone in the form of fine cracks passing the reinforcement B having a width of at the most 1 mm, with the proviso that the ratio between the crack width and the smallest transverse diameter of the reinforcement B is at the most 0.10, (c) under ultimate loading, the article shows a tensile load capacity corresponding to at least 120 MPa, (III) an increase in tensile strain capacity of the matrix defined as the amount, shape, arrangement, and performance of the reinforcement (B) being adapted to the matrix (A) so that the strain capacity of the matrix (A) with the reinforcement embedded therein is increased relative to the strain capacity of the matrix (A) in bulk so that the ratio between the strain capacity of the matrix (A) with the reinforcement embedded therein and the matrix (A) in bulk is at least 1.2. - View Dependent Claims (45)
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46. A shaped article comprising a matrix (A) with a reinforcement (B) embedded therein, the matrix (A) being a composite structure comprising a base matrix (C) which is reinforced with reinforcing bodies (D) in the form of fibers, the article containing 5-40% by volume of reinforcement in the form of bars with a transverse dimension, of 5-25 mm, embedded in a fiber-reinforced matrix made with 20-60% by volume of large compact-shaped bodies with a maximum particle size of 10 mm, 4-20% by volume of fibers with a length of at least 2 mm, and a diameter of 5-400 μ
- m, and 20-56% by volume of a binder-forming material made from
20-50% volume of water, 25-75% by volume of cement, 5-40% by volume of ultrafine powder of a size in the range between 50 and 0.5 μ
m, the ultrafine powder having a reactivity which is less than the reactivity of the cement, and a dispersing agent. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53)
- m, and 20-56% by volume of a binder-forming material made from
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54. A shaped article comprising a matrix (A) with a reinforcement (B) embedded therein, the matrix (A) being a composite structure comprising a base matrix (C) which is reinforced with reinforcing bodies (D) in the form of fibers, the article containing 5-40% by volume of reinforcement with a transverse dimension of 0.2-5 mm, embedded in a fine fiber-reinforced matrix made with 0-50% by volume of particles having a maximum particle size of 1 mm, the particles being selected from fine sand and metal particles, 4-20% by volume of fibers with a length from 20 μ
- m to 5 mm and a diameter of 0.5-200 μ
m together with 30-96% by volume of a binder-forming material made from 20-50% by volume of water, 10-75% by volume of cement, 5-40% by volume of ultrafine powder of a size in the range between 50 Å and
0.5 μ
m, the ultrafine powder having a reactivity which is less than the reactivity of the cement, and a a dispersing agent. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
- m to 5 mm and a diameter of 0.5-200 μ
Specification