A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SLAB TRACK CEMENT MORTAR
To provide slab track cement mortar that is excellent in frost damage resistance not depending on construction condition and has strength development supporting a track slab, as well as having moderate elasticity as a buffer layer and excellent in workability.SOLUTION: Slab track cement mortar contains cement of 100 parts mass, fine aggregates of 25 to 250 parts mass, an asphalt emulsion of 50 to 200 parts mass, and a rubber powder and water of 10 to 200 parts mass, where the rubber powder has a maximum particle diameter of 500 μm or less, an average particle diameter of 50 to 300 μm, and a content of 3 to 25 volume%/cement mortar. In addition, a Young's modulus of the material with material age of 28 days is preferably 1000 N/mm2 or less, and compressive strength of the material with the material age of 28 days is preferably 1 to 10 N/mm2 or less. The slab track cement mortar is also provided with its flow time being 35 seconds or less.SELECTED DRAWING: None
【課題】施工条件に左右されず耐凍害性に優れ、軌道スラブを支持する強度発現性を有し、更には緩衝層としての適度な弾性を有し、施工性にも優れるスラブ軌道用モルタルの提供。【解決手段】セメント１００質量部、細骨材２５〜２５０質量部、アスファルト乳剤５０〜２００質量部、ゴム粉及び水１０〜２００質量部を含有し、ゴム粉が、最大粒子径５００μｍ以下、平均粒子径５０〜３００μｍ、含有量３〜２５体積％/モルタル。さらに、材齢２８日のヤング率が、１０００Ｎ／ｍｍ２以下であることが望ましく、その上、材齢２８日の圧縮強度が１〜１０Ｎ／ｍｍ２以下であることが望ましいスラブ軌道用モルタル。更にフロータイムが、３５秒以下であるスラム軌道用モルタル。【選択図】なし
SLAB TRACK CEMENT MORTAR
To provide slab track cement mortar that is excellent in frost damage resistance not depending on construction condition and has strength development supporting a track slab, as well as having moderate elasticity as a buffer layer and excellent in workability.SOLUTION: Slab track cement mortar contains cement of 100 parts mass, fine aggregates of 25 to 250 parts mass, an asphalt emulsion of 50 to 200 parts mass, and a rubber powder and water of 10 to 200 parts mass, where the rubber powder has a maximum particle diameter of 500 μm or less, an average particle diameter of 50 to 300 μm, and a content of 3 to 25 volume%/cement mortar. In addition, a Young's modulus of the material with material age of 28 days is preferably 1000 N/mm2 or less, and compressive strength of the material with the material age of 28 days is preferably 1 to 10 N/mm2 or less. The slab track cement mortar is also provided with its flow time being 35 seconds or less.SELECTED DRAWING: None
【課題】施工条件に左右されず耐凍害性に優れ、軌道スラブを支持する強度発現性を有し、更には緩衝層としての適度な弾性を有し、施工性にも優れるスラブ軌道用モルタルの提供。【解決手段】セメント１００質量部、細骨材２５〜２５０質量部、アスファルト乳剤５０〜２００質量部、ゴム粉及び水１０〜２００質量部を含有し、ゴム粉が、最大粒子径５００μｍ以下、平均粒子径５０〜３００μｍ、含有量３〜２５体積％/モルタル。さらに、材齢２８日のヤング率が、１０００Ｎ／ｍｍ２以下であることが望ましく、その上、材齢２８日の圧縮強度が１〜１０Ｎ／ｍｍ２以下であることが望ましいスラブ軌道用モルタル。更にフロータイムが、３５秒以下であるスラム軌道用モルタル。【選択図】なし
SLAB TRACK CEMENT MORTAR
スラブ軌道用モルタル
YOSHIDA RYOZO (author) / FUKUYAMA MAKOTO (author)
2018-12-27
Patent
Electronic Resource
Japanese
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