CONCRETE

General for autoclaved aerated concrete units

The specifications of the materials to be used shall be included in the production control documentation. If appropriate European Standards are available, they shall be used except that aggregates need not comply with grading requirements. If not available, the manufacturer shall specify the materials and have data on their suitability.

See BS EN 771-4 for autoclaved aerated concrete units

 

General manufactured stone units

AAC masonry units shall be manufactured using hydraulic binders such as cement and/or lime

combined with fine siliceous based material, cell-generating material and water and cured with high

pressure steam in autoclaves.

See BS EN 771-5 for manufactured stone units

 

General Concrete flue blocks

The specifications of the materials to be used shall be included in the production control

documentation. If appropriate European Standards are available, they shall be used except that

aggregate need not comply with the grading requirements. If not available, the manufacturer shall

specify the materials and have data on their suitability.

For Concrete flue blocks see BS EN 1858.