…The method of burning similar natural rocks spread throughout Europe, producing natural cement, but the composition of natural cement varied widely, making it unreliable. In 1824, J. Aspdin of England invented a method of mixing clay and limestone and burning it, giving birth to modern cement whose composition could be adjusted. It is said that this cement was named Portland cement because the color of the hardened cement was very similar to that of stone mined from the Isle of Portland in the UK. … *Some of the terminology references "Aspdin, J." are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…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。1824年にイギリスのアスプディンJ.Aspdinにより粘土と石灰石を混合して焼成する方法が発明され,成分調製が可能な近代的セメントが誕生した。このセメントの硬化したものがイギリスのポートランド島から産出される石材の色とよく似ていたためポルトランドセメントportland cementと命名されたといわれる。… ※「アスプディン,J.」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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