Berolan® LPC 908 is an air entraining agent for use in concrete. The active agent concentration was cho- sen low consciously to permit a practicable dosing. The air entraining admixture was specially developed for use in dry concrete. It effects a frost resistant and frost and de-icing salt resistant concrete matrix by adoption of micro air pores.
The small-sized spherical pores supersede the fine grain particles. They raise the slipping effect in the fresh concrete and cause an improvement of working and compaction when fitting the concrete. By preliminary tests the required dosage should be detected, because air pore formation is dependent on several factors (concrete composition, cement grade, fresh concrete consistency, temperature, mixing time and others). The air entraining admixture should be intermixed homogeneously in the dry concrete.
The mixing time of the fresh concrete in the compulsory mixer should not be less than 60 seconds. The formation of air pores in concrete with very low consistency is very hindered. Suitability tests should be run, because raising air contents cause decreasing strengths.
While fitting the concrete, tests of air content should be done at regular intervals by trained personal. Adaptations of the dosage on actual conditions may be necessarily.
The regional prevailing technical rules and standards about concrete and air entrained concrete should be considered.

Specification

• Appearance: beige to yellowish powder
  
• Composition: mixture of calcium carbonate and saponified rosin acids
• Chloride strength: < 0,1 %
  
• Alkaline strength: < 1 %
  
• Bulk density: 650 – 750 g/dm3
• Moisture: max. 1.0 %
• Dosing: 2 – 10 g / kg cement
  

Storing

 
Berolan® LPC 908 is fit for storage over 12 months in original packaging at temperatures below +40 °C. It should be stored under dry conditions. Pay attention to sufficient distance from sources of heat.

 
Packaging

in bags of 25 kg, 1000 kg on pallet

Revision: August 24th, 2009

The data and the information specified above correspond to the today's conditions of our knowledge and were pro- vided after best knowledge and conscience. However, an adhesion for this is not taken over. Data concerning our products are technical descriptions of quality and no assured characteristics in the sense of right. Existing patent rights are to be considered.