Section 4106. �Plastic Film and Insulating Covers for Curing Concrete

4106.01���� PLASTIC FILM.

A.��� Comply with the following:

1.���� Tough, pliable, moisture proof, and durable

2.���� Material will retain its moisture proof properties while it is in place on the surface of the concrete.

3.���� White pigmented material that is opaque.

4.���� No less than 0.85 mils (21 �m) thick.

5.���� No less than 70% daylight reflectance relative to magnesium oxide when tested according to ASTM E 1347.

B.��� If the thickness of plastic film is less than 3.4 mils (85 �m), do not use it more than once for curing concrete.

4106.02���� INSULATING COVERS.

Comply with the following:

A.��� Cellulosic fiber sheeting with a nominal 3/4 inch (20 mm) thickness.

B.��� Similar to sheeting specified in ASTM C 208.