Yarn-fiber reinforced doped concrete
By doping yarn in fiber-doped concrete, yarn-fiber-reinforced doped concrete is solved, and the problem of insufficient compressive and flexural resistance of existing concrete materials is achieved, and higher mechanical properties and crack resistance are achieved.
Patent Information
- Application Number
- CN202311187071.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-14
- Publication Date
- 2025-03-14
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing concrete materials are insufficient in terms of compressive and flexural resistance, and are prone to cracks and peeling. The single fiber has low strength and is prone to fracture, and has poor compatibility with concrete aggregates.
The yarn-fiber reinforced doped concrete is used to further dopant yarn in the fiber-doped concrete, and the joining force of the fiber is enhanced by using the twisting action in the yarn, and the tight bonding of the yarn to the concrete base and the mutual entanglement and bridge of the fibers is formed to form a continuous three-dimensional network.
It improves the mechanical properties of concrete products, enhances compressive and flexural resistance, and reduces the occurrence of cracks and peeling.
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of building concrete, and in particular relates to a yarn-fiber reinforced mixed concrete. Background Art
[0002] Concrete is the most widely used building material in modern times. It has the advantages of abundant raw materials, low price, simple process, high strength and good durability. Among the products made of concrete materials, compression resistance, flexural resistance and other properties are important parameter indicators. Due to the limitations of existing concrete materials, although its strength has been improved, its compression resistance and flexural resistance are insufficient, and cracks and peeling often occur. The reason is that the hardness of concrete products is high, and cracks are easy to appear under the action of external forces. In order to improve the mechanical strength of cement concrete, a proper amount of scattered short fibers are usually added to improve the composite materials of crack resistance and impact resistance. Commonly used fibers include steel fiber, glass fiber, nylon fiber, etc. However, due to the low strength of single fiber, easy to break, and poor compatibility with concrete aggregate, the improvement of mechanical properties is limited. Summary of the invention
[0003] In view of the technical problem that concrete has poor mechanical properties, the present invention proposes a yarn-fiber reinforced doped concrete.
[0004] In order to achieve the above object, the technical solution of the present invention is achieved as follows:
[0005] A yarn-fiber reinforced doped concrete, wherein the concrete is prepared by mixing the following materials in corresponding parts by mass: 300-500 parts of cement, 200-500 parts of fly ash, 60-70 parts of silica fume, 88-176 parts of mineral powder, 400-425 parts of fine river sand, 5-20 parts of fiber, 5-10 parts of yarn and 300-400 parts of water.
[0006] The cement is P.O42.5 Portland cement;
[0007] The fly ash is Class I fly ash;
[0008] The silica fume has a loss on ignition of less than 6%, a silicon dioxide content of more than 85%, and a specific surface area of more than 15000m2 / kg;
[0009] The mineral powder is of S95 grade;
[0010] The particle size of the fine river sand is no more than 1.05 mm.
[0011] The fibers are polyester, nylon, polyvinyl alcohol fibers, and polyacrylonitrile fibers.
[0012] The length of the fiber is 10-30 mm, and the aspect ratio of the fiber is 300-600.
[0013] The yarn is cotton yarn, polyester yarn, nylon yarn, wool yarn, and the yarn can be long-staple yarn or short-staple yarn.
[0014] The length of the yarn is 10-50 mm. If the length of the yarn is too long, it is easy to get tangled and difficult to disperse in concrete.
[0015] Beneficial effects of the present invention:
[0016] The present invention further dopes yarn into fiber-doped concrete, and the internal fibers of the yarn have a stronger cohesive force due to twisting, and are less likely to break than short fibers. When it is doped in concrete, it can be closely combined with the concrete base, and intertwine and bridge with the fibers in the concrete, so that the yarn forms a continuous three-dimensional network in the base, thereby increasing the mechanical properties of the concrete product. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] Example 1
[0019] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447: 495: 60: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0020] Example 2
[0021] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 300: 435: 64: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 350, a length of 10 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 10 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0022] Example 3
[0023] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447: 495: 60: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 30 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0024] Example 4
[0025] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447: 495: 60: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 50 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0026] Example 5
[0027] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447: 495: 60: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is cotton yarn with a length of 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic matter content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0028] Example 6
[0029] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447: 495: 60: 176: 425: 5: 5: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is nylon yarn with a length of 40 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0030] Example 7
[0031] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 447:495:60:176:425:5:5:354, wherein the fiber is polyester staple fiber, wherein the polyester fiber aspect ratio is 400 and the length is 30 mm. The yarn is polyester yarn, and the length is 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a loss on ignition of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0032] Example 8
[0033] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 500: 500: 60: 150: 400: 20: 10: 400, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0034] Example 9
[0035] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 350: 250: 70: 88: 410: 10: 10: 300, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0036] Example 10
[0037] A yarn-fiber reinforced doped concrete is prepared from the following components in mass ratio: cement: fly ash: silica ash: mineral powder: fine river sand: fiber: yarn: water = 400: 200: 60: 176: 425: 20: 8: 354, wherein the fiber is a PVA short fiber, wherein the PVA fiber has an aspect ratio of 308, a length of 12 mm, a diameter of 39 μm, a tensile strength of 1600 MPa, an elastic modulus of 40 GPa, an elongation of 7%, and a density of 1.29 g / cm 3 The yarn is polyester yarn with a length of 20 mm. The cement is PO42.5 silicate cement; the fly ash is Class I fly ash; the silica ash has a ignition loss of 3%, a silicon dioxide content of 87%, and a specific surface area of 15700 m 2 / kg; the mineral powder is S95 grade, and its active calcium, silicon and aluminum inorganic content is 31%; the particle size of fine river sand is not more than 1.05mm.
[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. A yarn-fiber reinforced doped concrete, characterized in that: The concrete is prepared by mixing the following materials in corresponding parts by weight: 300-500 parts of cement, 200-500 parts of fly ash, 60-70 parts of silica fume, 88-176 parts of mineral powder, 400-425 parts of fine river sand, 5-20 parts of fiber, 5-10 parts of yarn and 300-400 parts of water.
2. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The fibers are polyester, nylon, polyvinyl alcohol fibers, and polyacrylonitrile fibers.
3. The yarn-fiber reinforced doped concrete according to claim 2, characterized in that: The length of the fiber is 10-30 mm, and the aspect ratio of the fiber is 300-600.
4. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The yarn is cotton yarn, polyester yarn, nylon yarn or wool yarn.
5. The yarn-fiber reinforced doped concrete according to claim 4, characterized in that: The length of the yarn is 10-50 mm.
6. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The cement is P.O42.5 silicate cement.
7. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The fly ash is Class I fly ash.
8. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The silica fume has a loss on ignition of less than 6%, a silicon dioxide content of more than 85%, and a specific surface area of more than 15000m 2 / kg.
9. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The mineral powder is of S95 grade.
10. The yarn-fiber reinforced doped concrete according to claim 1, characterized in that: The particle size of the fine river sand is no more than 1.05 mm.