A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HIGH SPECIFIC GRAVITY AND RADIATION SHIELDING CONCRETE
To provide a high specific gravity and radiation shielding concrete using high specific gravity aggregate with radiation shielding function, and excellent in flowability and strength.SOLUTION: A high specific gravity and radiation shielding concrete excellent in flowability by using a sulfate compound aggregate of alkali earth metal having density of 4.0 to 4.5 g/cm, particle diameter of 0.5 to 5.0 μm and solubility to water of 0.35 mg/100 mL, and adding a salt which is unsaturated carboxylic acid and consists of maleic acid, fumaric acid, acrylic acid and methacrylic acid, having high strength and low dry shrinkage and exhibiting compression breaking strength of 50 N/mmor more.SELECTED DRAWING: Figure 1
【課題】放射線遮蔽機能をもつ高比重骨材を用いた重量コンクリートであり流動性と強度に優れた高比重・放射線遮蔽コンクリートを提供すること。【解決手段】高比重・放射線遮蔽コンクリートは、密度が４．０〜４．５ｇ／ｃｍ３の範囲で、粒径０．５〜５．０μｍであり、水に対する溶解度が０．３５ｍｇ／１００ｍＬのアルカリ土類金属の硫酸塩化合物骨材を用い、不飽和カルボン酸でありマレイン酸、フマル酸、アクリル酸、メタクリル酸からなる塩を添加したことにより流動性に優れ、高強度および低乾燥収縮であり、５０Ｎ／ｍｍ２以上の圧縮破砕強度を示す。【選択図】図１
HIGH SPECIFIC GRAVITY AND RADIATION SHIELDING CONCRETE
To provide a high specific gravity and radiation shielding concrete using high specific gravity aggregate with radiation shielding function, and excellent in flowability and strength.SOLUTION: A high specific gravity and radiation shielding concrete excellent in flowability by using a sulfate compound aggregate of alkali earth metal having density of 4.0 to 4.5 g/cm, particle diameter of 0.5 to 5.0 μm and solubility to water of 0.35 mg/100 mL, and adding a salt which is unsaturated carboxylic acid and consists of maleic acid, fumaric acid, acrylic acid and methacrylic acid, having high strength and low dry shrinkage and exhibiting compression breaking strength of 50 N/mmor more.SELECTED DRAWING: Figure 1
【課題】放射線遮蔽機能をもつ高比重骨材を用いた重量コンクリートであり流動性と強度に優れた高比重・放射線遮蔽コンクリートを提供すること。【解決手段】高比重・放射線遮蔽コンクリートは、密度が４．０〜４．５ｇ／ｃｍ３の範囲で、粒径０．５〜５．０μｍであり、水に対する溶解度が０．３５ｍｇ／１００ｍＬのアルカリ土類金属の硫酸塩化合物骨材を用い、不飽和カルボン酸でありマレイン酸、フマル酸、アクリル酸、メタクリル酸からなる塩を添加したことにより流動性に優れ、高強度および低乾燥収縮であり、５０Ｎ／ｍｍ２以上の圧縮破砕強度を示す。【選択図】図１
HIGH SPECIFIC GRAVITY AND RADIATION SHIELDING CONCRETE
高比重・放射線遮蔽コンクリート
OKUBO TERUMI (author)
2019-06-20
Patent
Electronic Resource
Japanese
| Springer Verlag | 2017
Concrete for radiation shielding
Engineering Index Backfile | 1962
Concrete for radiation shielding
| Engineering Index Backfile | 1953