Durable concrete and method for producing the same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-016/08
C04B-020/00
C04B-038/00
C08K-007/22
C04B-016/06
C04B-014/24
C04B-028/02
C04B-014/30
C04B-018/08
C04B-111/20
출원번호
US-0540987
(2014-11-13)
등록번호
US-9126864
(2015-09-08)
발명자
/ 주소
Shah, Ashok H.
출원인 / 주소
NAVS, LLC
대리인 / 주소
Roberts Mlotkowski Safran & Cole, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of con
A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of concrete under freeze-thaw cycles.
대표청구항▼
1. A hardened concrete resistant to cracking in a freeze-thaw environment, comprising the following components: cement;aggregates;optionally admixtures; anddeformable spaces containing physical or chemical remnants of inorganic disintegrated solid elements,wherein the total volume of said deformable
1. A hardened concrete resistant to cracking in a freeze-thaw environment, comprising the following components: cement;aggregates;optionally admixtures; anddeformable spaces containing physical or chemical remnants of inorganic disintegrated solid elements,wherein the total volume of said deformable spaces is less than 2%, and the maximum dimension of said deformable spaces is less than about 300 micrometers, and the distance between the deformable spaces is no greater than about 200 micrometers, so as to prevent a pressure build-up in capillary pores of cement gel exceeding 1000 psi upon freezing of water within the capillary pores, said hardened concrete having a density above about 1.5 g/cm3. 2. The hardened concrete of claim 1, wherein said deformable spaces contain physical or chemical remnants of inorganic, hollow, spherical, deformable solid elements. 3. The hardened concrete of claim 2, wherein said inorganic deformable solid elements are made of materials selected from the group of glass, ceramic and silica and combinations thereof. 4. The hardened concrete of claim 2, wherein said spheres have a crush strength of <1000 psi. 5. The hardened concrete of claim 3, wherein said inorganic deformable solid elements are cenospheres. 6. The hardened concrete of claim 3, wherein said inorganic deformable solid elements are deformed by chemical disintegration over time. 7. The hardened concrete of claim 6, wherein said inorganic deformable solid elements are glass spheres. 8. The hardened concrete of claim 1, which has a density of above about 2 g/cm3. 9. The hardened concrete of claim 1, which has a density of above about 2.5 g/cm3. 10. The hardened concrete of claim 1, which has a density from about 2 g/cm3 to about 2.5 g/cm3. 11. The hardened concrete of claim 1, wherein the total volume of said deformable spaces is less than about 1%. 12. The hardened concrete of claim 1, wherein the total volume of said deformable spaces is less than or equal to about 0.6%.
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이 특허에 인용된 특허 (20)
Schattka, Jan Hendrik; Kautz, Holger; Loehden, Gerd, Additive building material mixtures containing different-sized microparticles.
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Frailey, Max L.; Wheeler, John G., Process for producing a blended cement having enhanced cementitious properties capable of combination with class C fly ash.
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