Air entraining Admixture

Product Description

AE is an ultra stable air-entraining admixture for use in all types of concrete. AE is particularly recommended for use in concrete in which it has previously been difficult to maintain the desired air content. AE is supplied as a ready-to-use aqueous solution, free of added chloride.

Recommended For

low slump concrete

flowable concrete

high temperature concrete

concrete with extended working times

light-weight and pre-stressed concrete

imparting workability to lean harsh mixes

reducing bleeding caused by grading deficiencies in the concrete materials

improve the cohesiveness and compressive

strength of concrete blocks and bricks.

Product Advantage                   

The use of AE to entrain optimum air content in concrete results in the following improvements in concrete quality:

improved plasticity and workability

reduced segregation and bleeding

reduced permeability increased water tightness

increased durability

increased resistance to freeze/thaw cycles

improved ability to entrain and retain air in concrete

improved stability

improved air-void system in hardened concrete

Compatibility

AE is compatible for use in concrete containing other admixtures such as high range water reducers, accelerators, retarders, densifiers and water repellents. However, combinations of admixtures may have a synergistic effect effectively increasing air entrainment and therefore, should always be

tested in concrete before use. When two or more admixtures are used, they must be added to the mix separately (through dispensers or by hand) and must not be mixed with each other prior to adding to the concrete mix.

Addition Rates

AE is normally used at 40-400mls/100kg cementitious material. AE is normally used at 10-100mls/100kgcementitious material. There is no standard dosage rate for AE. The exact amount of air entraining admixture needed for a given air content of concrete varies because of differences in concrete making materials. The amount of AE to use will depend upon the amount of air required under actual job conditions and therefore, should be determined by trial mixes before commencing production. In mixes containing water reducing or other admixtures, the amount of AE needed may be somewhat less than the amount required in plain mixes. In fly ash mixes, the amount of AE needed can be more than double that required in cement only mixes .

Air entraining Admixture