Batimix Alkali-Silica 650

Admixture to reduce alkali-silica reactivity in concrete


BATIMIX Alkali-Silica 650 is a lithium nitrate admixture used to minimize the alkali-silica reactivity (ASR) that may occur in the concrete.

Main Purpose

ASR is a chemical reaction. It occurs between the reactive silica in aggregates used to make concrete and the alkalis, sodium or potassium, present in the concrete. The reaction causes the formation of a gel that absorbs water and swells, exerting internal pressure that can lead to cracking and premature deterioration of the concrete.

BATIMIX Alkali-Silica 650 provides maximum protection against ASR. It can be used for plain or reinforced concrete, precast, prestressed, and architectural.


Concrete prepared with BATIMIX Alkali-Silica 650 is characterized by the following:

In the plastic state:

  • No detrimental effect on workability and setting time

In the hardened state:

  • No adverse effect on the mechanical properties
  • Enhanced concrete surface quality
  • Minimized concrete deterioration due to ASR
  • Reduced cost for repair and maintenance


0.8% to 2.5% of the cement weight


Brown liquid


  • 1MT Cubitainer
  • 200Kg plastic Drum
  • 20KG Plastic Drum
  • 4KG Plastic Pail

Health & Safety

BATIMIX Alkali-Silica 650 is not considered a hazardous product. However, it should not be swallowed or allowed to come into contact with skin and eyes. Suitable gloves and goggles should be worn. For additional information, kindly refer to the product’s Material Safety Data Sheet.