A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
QUICK-HARDENING CEMENT ADMIXTURE AND QUICK-HARDENING CEMENT COMPOSITION
PROBLEM TO BE SOLVED: To provide a cement admixture excellent in initial strength development property after securing a prescribed working life in the range from a low-temperature environment to a high-temperature environment: and to provide a cement admixture excellent in development of quick-hardening property even in the case of a small addition amount to cement.SOLUTION: A quick-hardening cement admixture contains (A) calcium aluminate, (B) anhydrous gypsum, (C) hydrogen carbonate, (D) hydroxy-carboxylic acid selected from glycolic acid, gluconic acid, tartaric acid, citric acid, glucuronic acid, heptonic acid, malic acid and a water-soluble salt thereof, and (E) formic acid and its salt.SELECTED DRAWING: None
【課題】低温環境下から高温環境下において、所定の可使時間を確保した上で、初期強度発現性に優れたセメント混和材；セメントに対して少ない添加量でも速硬性の発現に優れたセメント混和材の提供。【解決手段】（Ａ）カルシウムアルミネート類、（Ｂ）無水石膏、（Ｃ）炭酸水素塩、（Ｄ）グリコール酸、グルコン酸、酒石酸、クエン酸、グルクロン酸、ヘプトン酸、リンゴ酸及びそれらの水溶性塩から選ばれるオキシカルボン酸類、並びに（Ｅ）ギ酸又はその塩を含有する速硬性セメント混和材。【選択図】なし
QUICK-HARDENING CEMENT ADMIXTURE AND QUICK-HARDENING CEMENT COMPOSITION
PROBLEM TO BE SOLVED: To provide a cement admixture excellent in initial strength development property after securing a prescribed working life in the range from a low-temperature environment to a high-temperature environment: and to provide a cement admixture excellent in development of quick-hardening property even in the case of a small addition amount to cement.SOLUTION: A quick-hardening cement admixture contains (A) calcium aluminate, (B) anhydrous gypsum, (C) hydrogen carbonate, (D) hydroxy-carboxylic acid selected from glycolic acid, gluconic acid, tartaric acid, citric acid, glucuronic acid, heptonic acid, malic acid and a water-soluble salt thereof, and (E) formic acid and its salt.SELECTED DRAWING: None
【課題】低温環境下から高温環境下において、所定の可使時間を確保した上で、初期強度発現性に優れたセメント混和材；セメントに対して少ない添加量でも速硬性の発現に優れたセメント混和材の提供。【解決手段】（Ａ）カルシウムアルミネート類、（Ｂ）無水石膏、（Ｃ）炭酸水素塩、（Ｄ）グリコール酸、グルコン酸、酒石酸、クエン酸、グルクロン酸、ヘプトン酸、リンゴ酸及びそれらの水溶性塩から選ばれるオキシカルボン酸類、並びに（Ｅ）ギ酸又はその塩を含有する速硬性セメント混和材。【選択図】なし
QUICK-HARDENING CEMENT ADMIXTURE AND QUICK-HARDENING CEMENT COMPOSITION
速硬性セメント混和材および速硬性セメント組成物
TAKAHASHI HIROO (author)
2017-08-24
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
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