Air entrainment compositions for cement compositions

Details Air entrainment compositions for cement compositions Air entrainment compositions for cement compositions

1995-05-24

1996-06-04

Group, Karl

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106724, 106728, 106731, 106218, 106805, 106822, 106823, 530210, 560 68, C04B 2434

Patent

active

055229271

ABSTRACT:
Compositions and methods relating to cementitious compositions are provided. The use of a blend of a rosin and a tannin to entrain air into cementitious compositions is provided. A blend of a rosin and a tannin in a weight ratio of about 1:1.22 to about 1:1.86 are added to a wet cementitious composition at levels of less than 1% by weight based on the weight of the cement and air is mixed into the cement. The resulting cement will contain, e.g. 5% to 10% by volume air which improves the resistance of the set cement to freeze damage. Also provided is a method of entraining air into a cementitious composition which employs such a blend.

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