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A platform for research: civil engineering, architecture and urbanism
SPRAYING MATERIAL FOR WET-SPRAYING CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a spraying material for a wet-spraying construction method, which has quick-setting properties and early strength-developability, has sufficient strength developability for a medium-to-long period, and has good workability.SOLUTION: A spraying material for a wet spraying construction method consists of: a base concrete [B]; and a powder quick-setting material [A] to be added to the base concrete. The powder quick-setting material [A] comprises 1.5-5 mass% of sodium aluminate, 4-8 mass% of alkali metal carbonate, and a balance comprising an amorphous calcium aluminate and the base concrete [B] comprises 100 pts.mass of Portland cement, 7-14 pts.mass of an anhydrous gypsum having an average water content of 0.3-0.6 mass%, 3.8-4.8 pts.mass of an aggregate, and a mixing water.SELECTED DRAWING: None
【課題】急結性と高い初期強度発現性の具備に加え、中長期の強度発現性も十分高く、施工性も良好な湿式吹付工法用吹付材を提供する。【解決手段】次の［Ｂ］ベースコンクリートとこれに添加する［Ａ］粉体急結材からなる湿式吹付工法用吹付材。［Ａ］アルミン酸ナトリウム１．５〜５質量％、アルカリ金属炭酸塩４〜８質量％および残部非晶質カルシウムアルミネートからなる粉体急結材。［Ｂ］ポルトランドセメント１００質量部、平均含水率０．３〜０．６質量％の無水石膏７〜１４質量部、骨材３．８〜４．８質量部および混練水を含むベースコンクリート。【選択図】なし
SPRAYING MATERIAL FOR WET-SPRAYING CONSTRUCTION METHOD
PROBLEM TO BE SOLVED: To provide a spraying material for a wet-spraying construction method, which has quick-setting properties and early strength-developability, has sufficient strength developability for a medium-to-long period, and has good workability.SOLUTION: A spraying material for a wet spraying construction method consists of: a base concrete [B]; and a powder quick-setting material [A] to be added to the base concrete. The powder quick-setting material [A] comprises 1.5-5 mass% of sodium aluminate, 4-8 mass% of alkali metal carbonate, and a balance comprising an amorphous calcium aluminate and the base concrete [B] comprises 100 pts.mass of Portland cement, 7-14 pts.mass of an anhydrous gypsum having an average water content of 0.3-0.6 mass%, 3.8-4.8 pts.mass of an aggregate, and a mixing water.SELECTED DRAWING: None
【課題】急結性と高い初期強度発現性の具備に加え、中長期の強度発現性も十分高く、施工性も良好な湿式吹付工法用吹付材を提供する。【解決手段】次の［Ｂ］ベースコンクリートとこれに添加する［Ａ］粉体急結材からなる湿式吹付工法用吹付材。［Ａ］アルミン酸ナトリウム１．５〜５質量％、アルカリ金属炭酸塩４〜８質量％および残部非晶質カルシウムアルミネートからなる粉体急結材。［Ｂ］ポルトランドセメント１００質量部、平均含水率０．３〜０．６質量％の無水石膏７〜１４質量部、骨材３．８〜４．８質量部および混練水を含むベースコンクリート。【選択図】なし
SPRAYING MATERIAL FOR WET-SPRAYING CONSTRUCTION METHOD
湿式吹付工法用吹付材
HANEI YOSHIHISA (author)
2018-10-18
Patent
Electronic Resource
Japanese
MORTAR FOR DRY-SPRAYING CONSTRUCTION METHOD SPRAYING MATERIAL, AND SPRAYING MATERIAL
| European Patent Office | 2018