What is Sand-lime?

Sandlime is made out of sand, lime and water (no additives). By high pressing the mixture and autoclaving afterwards a firm white building material is produced. The procedure is well-known as it first has been manufactured in Germany in 1894.

Other words for sand-lime bricks: 

• calcium-silicate bricks;
• limestones;
• silicate stones.

In the contrary  to autoclaved aerated concrete no aluminium and gypsum is added, which prevents the chemical reaction (aerating) between the aluminium and the alkali in the lime and the cement.

Sand-lime bricks characteristics:

• Good acoustic insulation;
• Weak thermic insulation;
• Good heat & humidity accumulation;
• Good fire resistance.

HESS AAC Systems develops, engineers and manufactures machinery and systems for sand-lime brick manufacturers.
We have focused our activities on the sawing of sand-lime elements.