A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
POWDER SHRINKAGE-REDUCING AGENT FOR CEMENT AND USE THEREOF
PROBLEM TO BE SOLVED: To provide a powder shrinkage-reducing agent for cement that has an excellent dispersibility into powder material such as hydraulic compound and aggregate, achieves a sufficient shrinkage-reducing effect even with a small addition amount, and has less change in physical property of the cement composition after setting.SOLUTION: A powder shrinkage-reducing agent for cement contains a nonionic surfactant (A) and an oil-absorbing powder (B), the nonionic surfactant (A) contains a compound represented by formula (1), and the compression ratio defined by formula (2) of C=100(P-S)/P is 25 to 55%. In the formula (1) of R-(EO)p-[(PO)q/(EO)r]-(PO)s-H, R is alkyl or alkenyl; PO is oxypropylene; EO is oxyethylene; p, q and r are each 1 to 20; and s is 0 to 10.SELECTED DRAWING: None
【課題】水硬性化合物や骨材等の粉末材料への分散性に優れ、少ない添加量でも十分な収縮低減効果を発揮し、硬化後のセメント組成物の物性変化が小さいセメント用粉末収縮低減剤を提供する。【解決手段】ノニオン性界面活性剤（Ａ）及び吸油性粉体（Ｂ）を含むセメント用粉末収縮低減剤であって、前記ノニオン性界面活性剤（Ａ）が式（１）で示される化合物を含み、式（２）で定義される圧縮率が２５〜５５％である、セメント用粉末収縮低減剤。Ｒ−（ＥＯ）ｐ−［（ＰＯ）ｑ／（ＥＯ）ｒ］−（ＰＯ）ｓ−Ｈ（１）（Ｒはアルキル又はアルケニル；ＰＯはオキシプロピレン；ＥＯはオキシエチレン；ｐ，ｑ，ｒは１〜２０；ｓは０〜１０）圧縮率、Ｃ＝１００（Ｐ−Ｓ）／Ｐ（２）【選択図】なし
POWDER SHRINKAGE-REDUCING AGENT FOR CEMENT AND USE THEREOF
PROBLEM TO BE SOLVED: To provide a powder shrinkage-reducing agent for cement that has an excellent dispersibility into powder material such as hydraulic compound and aggregate, achieves a sufficient shrinkage-reducing effect even with a small addition amount, and has less change in physical property of the cement composition after setting.SOLUTION: A powder shrinkage-reducing agent for cement contains a nonionic surfactant (A) and an oil-absorbing powder (B), the nonionic surfactant (A) contains a compound represented by formula (1), and the compression ratio defined by formula (2) of C=100(P-S)/P is 25 to 55%. In the formula (1) of R-(EO)p-[(PO)q/(EO)r]-(PO)s-H, R is alkyl or alkenyl; PO is oxypropylene; EO is oxyethylene; p, q and r are each 1 to 20; and s is 0 to 10.SELECTED DRAWING: None
【課題】水硬性化合物や骨材等の粉末材料への分散性に優れ、少ない添加量でも十分な収縮低減効果を発揮し、硬化後のセメント組成物の物性変化が小さいセメント用粉末収縮低減剤を提供する。【解決手段】ノニオン性界面活性剤（Ａ）及び吸油性粉体（Ｂ）を含むセメント用粉末収縮低減剤であって、前記ノニオン性界面活性剤（Ａ）が式（１）で示される化合物を含み、式（２）で定義される圧縮率が２５〜５５％である、セメント用粉末収縮低減剤。Ｒ−（ＥＯ）ｐ−［（ＰＯ）ｑ／（ＥＯ）ｒ］−（ＰＯ）ｓ−Ｈ（１）（Ｒはアルキル又はアルケニル；ＰＯはオキシプロピレン；ＥＯはオキシエチレン；ｐ，ｑ，ｒは１〜２０；ｓは０〜１０）圧縮率、Ｃ＝１００（Ｐ−Ｓ）／Ｐ（２）【選択図】なし
POWDER SHRINKAGE-REDUCING AGENT FOR CEMENT AND USE THEREOF
セメント用粉末収縮低減剤及びその利用
SAIGA MASATAKA (author) / AOKI TAKAYUKI (author) / KITANO KENICHI (author)
2017-02-02
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
SHRINKAGE REDUCING AGENT FOR CEMENT AND CEMENT COMPOSITION
| European Patent Office | 2018
SELF-SHRINKAGE REDUCING AGENT FOR CEMENT COMPOSITION AND CEMENT COMPOSITION
| European Patent Office | 2019