Textile-reinforced cement composite for suppressing occurrence of slipping and crack and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11542197-B2
Application number	US-201916702466-A
Country	US
Kind code	B2
Filing date	Dec 3, 2019
Priority date	Sep 9, 2019
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

Provided are a textile reinforced cement composite for suppressing occurrence of slipping and a crack and a manufacturing method thereof. The textile reinforced cement composite for suppressing occurrence of slipping and a crack can suppress slipping between a textile grid reinforcement and a cement composite by using an angulated filling material mixed therewith when a textile reinforced cement composite having a textile grid reinforcement embedded in a cement composite is manufactured, suppress occurrence of a crack of the cement composite, suppress occurrence of a crack of the cement composite due to a fiber bridging reaction by using organic fiber mixed therewith, induce distribution of fine cracks, suppress degradation of fluidity of the cement composite caused by mixing of the angulated filling material by using a spherical binder and a chemical admixture added thereto, and suppress slipping between the textile grid reinforcement and the cement composite by using a fine powder binder having a predetermined particle size and mixed therewith.

First claim

What is claimed is:

1. A textile reinforced cement composite for suppressing occurrence of slipping and a crack, the textile reinforced cement composite comprising:
a cement composite formed by mixing a fine powder binder, an angulated filling material, and an organic fiber with cement so that slipping on an interface with a textile grid reinforcement and occurrence of a crack are suppressed; and
the textile grid reinforcement embedded and disposed within the cement composite to reinforce the cement composite, wherein the textile grid reinforcement is formed by weaving glass fiber, carbon fiber, aramid fiber, or basalt fiber, into a form having a predetermined shape,
wherein the cement composite is formed by mixing 100 parts by weight of the cement, 40 to 60 parts by weight of a spherical binder, 10 to 30 parts by weight of the fine powder binder, 180 to 225 parts by weight of general sand, 75 to 120 parts by weight of the angulated filling material, 55 to 75 parts by weight of mixing water, 0.5 to 2.5 parts by weight of the organic fiber, and 0.1 to 0.3 parts by weight of a chemical admixture,
the angulated filling material suppresses slipping between the textile grid reinforcement and the cement composite and occurrence of a crack of the cement composite,
the fine powder binder has a predetermined particle size and suppresses slipping between the textile grid reinforcement and the cement composite, and
the organic fiber, which is a staple fiber selected from polyvinyl alcohol (PVA) fiber, polyethylene (PE) fiber, glass fiber, or nylon fiber, suppresses occurrence of a crack of the cement composite due to a fiber bridging reaction and induces distribution of fine cracks,
wherein the angulated filling material is angulated sand or glass powder having distribution of grain shape of 45 to 52%, and wherein the general sand has a particle size of 1 to 5 mm.

2. The textile reinforced cement composite of claim 1 , wherein an entirety of the filling material includes the angulated filling material at 25 to 45% and the general sand at 60 to 75%, and the angulated filling material is partially replaced with the general sand.

3. The textile reinforced cement composite of claim 1 , wherein the spherical binder, which is a binder that suppresses degradation of fluidity of the cement composite caused by use of the angulated filling material, includes at least one selected from fly ash, silica fume, and lightweight bead.

4. The textile reinforced cement composite of claim 1 , wherein the chemical admixture suppresses degradation of fluidity of the cement composite caused by use of the angulated filling material and includes at least one selected from a superplasticizer, a water reducing admixture, and a high range water reducing admixture.

5. The textile reinforced cement composite of claim 1 , wherein the fine powder binder is a binder that has an average particle size of 2 to 10 μm to suppress slipping between the textile grid reinforcement and the cement composite.

6. The textile reinforced cement composite of claim 5 , wherein the fine powder binder includes at least one selected from fine glass powder, fine silica powder, and fine limestone powder.

7. A method of manufacturing a textile reinforced cement composite for suppressing occurrence of slipping and a crack, the method comprising:
a) arranging a textile grid reinforcement on a form having a predetermined shape;
b) forming a binder including cement, a spherical binder, and a fine powder binder;
c) forming a filling material including general sand and an angulated filling material;
d) forming cement paste for a cement composite by mixing the binder, the filling material, mixing water, and a chemical admixture;
e) mixing organic fiber with the cement paste;
f) pouring the cement paste mixed with the organic fiber on the textile grid reinforcement in the form; and
g) curing and drying the poured cement paste to complete the textile reinforced cement composite having the textile grid reinforcement embedded within the cement composite, wherein the textile grid reinforcement is formed by weaving glass fiber, carbon fiber, aramid fiber, or basalt fiber, into the form having the predetermined shape,
wherein the angulated filling material suppresses slipping between the textile grid reinforcement and the cement composite and occurrence of a crack of the cement composite,
the fine powder binder has a predetermined particle size and suppresses slipping between the textile grid reinforcement and the cement composite, and
the organic fiber, which is a staple fiber selected from polyvinyl alcohol (PVA) fiber, polyethylene (PE) fiber, glass fiber, or nylon fiber, suppresses occurrence of a crack of the cement composite due to a fiber bridging reaction and induces distribution of fine cracks,
wherein the angulated filling material is angulated sand or glass powder having distribution of grain shape of 45 to 52%, and wherein the general sand has a particle size of 1 to 5 mm.

8. The method of claim 7 , wherein the cement composite is formed by mixing 100 parts by weight of the cement, 40 to 60 parts by weight of the spherical binder, 10 to 30 parts by weight of the fine powder binder, 180 to 225 parts by weight of the general sand, 75 to 120 parts by weight of the angulated filling material, 55 to 75 parts by weight of the mixing water, 0.5 to 2.5 parts by weight of the organic fiber, and 0.1 to 0.3 parts by weight of the chemical admixture.

9. The method of claim 8 , wherein an entirety of the filling material includes the angulated filling material at 25 to 45% and the general sand at 60 to 75%, and the angulated filling material is partially replaced with the general sand.

10. The method of claim 8 , wherein the spherical binder, which is a binder that suppresses degradation of fluidity of the cement composite caused by use of the angulated filling material, include at least one selected from fly ash, silica fume, and lightweight bead.

11. The method of claim 8 , wherein the chemical admixture suppresses degradation of fluidity of the cement composite caused by use of the angulated filling material and includes at least one selected from a superplasticizer, a water reducing admixture, and a high range water reducing admixture.

12. The method of claim 8 , wherein the fine powder binder is a binder that has an average particle size of 2 to 10 μm to suppress slipping between the textile grid reinforcement and the cement composite.

13. The method of claim 12 , wherein the fine powder binder includes at least one selected from fine glass powder, fine silica powder, and fine limestone powder.

Assignees

• Korea Inst Civil Eng & Building Tech

Inventors

• Ryu Gum Sung
• Koh Kyung Taek
• Kim Hyeong Yeol
• An Gi Hong
• Seo Dong Woo
• Jin Seung Seop

Classifications

• C04B2111/343

  Crack resistant materials · CPC title

• C04B14/22

  Glass {; Devitrified glass} · CPC title

• C04B16/0691

  Polyamides; Polyaramides · CPC title

• C04B14/06

  Quartz; Sand · CPC title

• C04B18/146

  Silica fume · CPC title