A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ADMIXTURE FOR COUNTERMEASURE AGAINST SALT DAMAGE AND METHOD FOR COUNTERMEASURE AGAINST SALT DAMAGE OF REINFORCED CONCRETE
PROBLEM TO BE SOLVED: To provide an admixture for countermeasure against salt damage and a method for countermeasure against salt damage of reinforced concrete, allowing for prevention of crack occurring in reinforced concrete caused by salt damage of the reinforced concrete even when freezing preventive material containing chloride is sprayed onto the reinforced concrete.SOLUTION: In one embodiment, the admixture for countermeasure against salt damage is provided that is obtained by pulverizing a heat treated article obtained by heat treating a mixture of a CaO raw material, an AlOraw material and an FeOraw material and containing calcium aluminoferrite and free lime at a specific ratio. In another embodiment, the admixture for countermeasure against salt damage is provided that is obtained by pulverizing a heat treated article obtained by heat treating a mixture of a CaO raw material, an AlOraw material and an FeOraw material and further CaSOraw material and containing calcium aluminoferrite, free lime and anhydrous gypsum at a specific ratio. The method for countermeasure against salt damage of the reinforced concrete is provided that comprises blending the admixture for countermeasure against salt damage with concrete.SELECTED DRAWING: None
【課題】塩化物を含む凍結防止材を散布しても鉄筋コンクリートの塩害によるひび割れ発生を防止することが可能となる塩害対策用混和材および鉄筋コンクリートの塩害対策方法を提供する。【解決手段】ＣａＯ原料、Ａｌ２Ｏ３原料、およびＦｅ２Ｏ３原料を混合したものを熱処理して得られ、カルシウムアルミノフェライト、および遊離石灰を特定の割合で含有する熱処理物を粉砕してなる塩害対策用混和材であり、ＣａＯ原料、Ａｌ２Ｏ３原料、およびＦｅ２Ｏ３原料に、さらにＣａＳＯ４原料を混合したものを熱処理して得られ、カルシウムアルミノフェライト、遊離石灰、および無水石膏を特定の割合で含有する熱処理物を粉砕してなる塩害対策用混和材であり、前記塩害対策用混和材をコンクリートに配合してなる鉄筋コンクリートの塩害対策方法、である。【選択図】なし
ADMIXTURE FOR COUNTERMEASURE AGAINST SALT DAMAGE AND METHOD FOR COUNTERMEASURE AGAINST SALT DAMAGE OF REINFORCED CONCRETE
PROBLEM TO BE SOLVED: To provide an admixture for countermeasure against salt damage and a method for countermeasure against salt damage of reinforced concrete, allowing for prevention of crack occurring in reinforced concrete caused by salt damage of the reinforced concrete even when freezing preventive material containing chloride is sprayed onto the reinforced concrete.SOLUTION: In one embodiment, the admixture for countermeasure against salt damage is provided that is obtained by pulverizing a heat treated article obtained by heat treating a mixture of a CaO raw material, an AlOraw material and an FeOraw material and containing calcium aluminoferrite and free lime at a specific ratio. In another embodiment, the admixture for countermeasure against salt damage is provided that is obtained by pulverizing a heat treated article obtained by heat treating a mixture of a CaO raw material, an AlOraw material and an FeOraw material and further CaSOraw material and containing calcium aluminoferrite, free lime and anhydrous gypsum at a specific ratio. The method for countermeasure against salt damage of the reinforced concrete is provided that comprises blending the admixture for countermeasure against salt damage with concrete.SELECTED DRAWING: None
【課題】塩化物を含む凍結防止材を散布しても鉄筋コンクリートの塩害によるひび割れ発生を防止することが可能となる塩害対策用混和材および鉄筋コンクリートの塩害対策方法を提供する。【解決手段】ＣａＯ原料、Ａｌ２Ｏ３原料、およびＦｅ２Ｏ３原料を混合したものを熱処理して得られ、カルシウムアルミノフェライト、および遊離石灰を特定の割合で含有する熱処理物を粉砕してなる塩害対策用混和材であり、ＣａＯ原料、Ａｌ２Ｏ３原料、およびＦｅ２Ｏ３原料に、さらにＣａＳＯ４原料を混合したものを熱処理して得られ、カルシウムアルミノフェライト、遊離石灰、および無水石膏を特定の割合で含有する熱処理物を粉砕してなる塩害対策用混和材であり、前記塩害対策用混和材をコンクリートに配合してなる鉄筋コンクリートの塩害対策方法、である。【選択図】なし
ADMIXTURE FOR COUNTERMEASURE AGAINST SALT DAMAGE AND METHOD FOR COUNTERMEASURE AGAINST SALT DAMAGE OF REINFORCED CONCRETE
塩害対策用混和材および鉄筋コンクリートの塩害対策方法
HIGUCHI TAKAYUKI (author) / USHIRO MASATAKA (author) / TERASAKI SEIICHI (author)
2016-09-05
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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