Concrete structural member专利检索-纤维增强混凝土混凝土建筑材料专利检索查询-专利查询网

Concrete structural member

阅读：954发布：2023-03-02

专利汇可以提供Concrete structural member专利检索，专利查询，专利分析的服务。并且A load-bearing reinforced-concrete structural member, such as a beam or bridge-deck slab, composed of concrete and including both upper and lower stress-reinforcing means with its lower stressreinforcing means being reinforcing metal bars embedded in concrete and its upper stress-reinforcing means being the uppermost 20 to 45 percent of the member and of a fibrousconcrete material consisting essentially of closely spaced short wires uniformly distributed randomly in concrete at an average spacing therebetween of less than 0.3 inch.，下面是Concrete structural member专利的具体信息内容。

权利要求

1. In a load-bearing reinforced-concrete structural member having top and bottom surfaces and a thickness T measured between the top and bottom surfaces and composed of concrete and lower and upper stress-reinforcing means with the lower stressreinforcing means being a plurality of reinforcing metal bars disposed in the lower halfmost region of the thickness T and in proximity to the bottom surface, the improvement in combination therewith of: the upper stress-reinforcing means consisting essentially of a fibrous-concrete material disposed as a wearresistant top surface layer of said structural member with said top surface layer extending downwardly from the top surface to a depth between 20 percent and 45 percent of said thickness T and with said fibrous-concrete material consisting essentially of between 0.3 and 5.0 percent by volume of closely spaced shortwire metal segments uniformly distributed randomly in concrete at an average spacing between said wire segments of less than 0.3 inch.

2. The structural member of claim 1 in which said upper stress-reinforcing means consists essentially of the fibrous-concrete material whose short wire segments are uniformly distributed randomly in concrete at the average spacing between said wire segments of less thAn 0.1 inch.

3. The structural member of claim 2 in which said top surface layer extends downwardly from the top surface to a depth between 25 percent and 35 percent of said thickness T.

4. The structural member of claim 3 in the form of a beam or slab adapted for use with span supports effectively spaced between 4''7'''' and 7''11'''' apart and with said beam or slab incorporating said top surface layer extending downwardly from the top surface to the depth of the thickness T providing substantially a balanced reinforcement.

5. The structural member of claim 3 in which short wires of a diameter between 0.006 and 0.020 inch and of a length within 1/2 and 3 inches are the closely spaced short wire segments of the fibrous-concrete material.

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