Method of producing sand-lime bricks with a low bulk density

US4229393A · kind A · utility

Inventors

• Karlhans Wesche · Bad Tölz, DE
• Peter Schubert · Kaarst, DE
• Horst W. Glitza · Bad Tölz, DE

Key dates

• Filing date: Aug 22, 1978
• Grant date: Oct 21, 1980
• Expiry date: Aug 22, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/60
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method for producing sand-lime bricks of low bulk density and having a green strength of at least 1 kp/cm.sup.2 in which at least 1% by weight of cement is added to a mixture of sand, lime and water and the mixture is then compacted in molds by vibration or under a pressure of less than 150 kp/cm.sup.2 to form bricks which are subsequently cured.