…Research into cement became more active with the Industrial Revolution, and in 1756, J. Smeaton of England obtained hydraulic lime by burning lime containing clay. In 1797, J. Parker of England invented a method to produce hydraulic lime by burning clayey limestone (cement rock), which he called Roman cement. Similar methods of burning natural rocks spread throughout Europe, and natural cement was produced, but natural cement lacked reliability due to its large variation in composition. … *Some terminology explanations that mention "roman cement" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…産業革命とともにセメントの研究が盛んになり,1756年,イギリスのスミートンJ.Smeatonは粘土を含む石灰を焼成して水硬性石灰を得た。97年には同じイギリスのパーカーJ.Parkerが粘土質石灰石(セメント岩)を焼成して水硬性石灰をつくることを発明し,これをローマンセメントroman cementと呼んだ。同様な天然岩石を焼成する方法はヨーロッパ各国に広まり,天然セメントが製造されたが,天然セメントは成分変動が大きいため信頼性に欠けた。… ※「roman cement」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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