Pavement overlay material and method

A method of making a pavement overlay mixture, comprising the steps of:

• combining
• a redispersible binder based on a copolymer of vinyl acetate and ethylene formulated to improve workability and void distribution, about 0.5 wt % to about 1.0 wt %;
• a redispersible binder based on a copolymer of vinyl acetate and ethylene formulated to improve cured state flexibility and adhesion with a substrate, about 3.0 wt % to about 3.5 wt %;
• masonry mortar aggregate (ASTM C144) about 49 wt % to about 59 wt %;
• type II hydraulic Portland cement about 15 wt % to about 25 wt %;
• class C or class F fly ash about 1 wt % to about 20 wt %;
• polycarbonate superplasticizer about 0 wt % to 2 wt %;
• and
• polypropylene microfibers, about 0.25 to about 1.5 inches long, about 0.8 wt % to about 1.16 wt % in a dry form blend;
• adding said dry blend to a mixing machine containing water apportioned as about 11 wt % to about 21 wt %, all said percentages being by weight of said overlay mixture;
• and
• mixing for more than 5 minutes.

A hardened pavement overlay, comprising:

• a ⅛ to 1 inch thick, screed placed, and 4 hour cured mixture, including by weight prior to placement:
• a redispersible binder based on a copolymer of vinyl acetate and ethylene formulated to improve workability and void distribution, about 0.5 wt % to about 1.0 wt %;
• a redispersible binder based on a copolymer of vinyl acetate and ethylene formulated to improve cured state flexibility and adhesion with a substrate, about 3.0 wt % to about 3.5 wt %;
• masonry mortar aggregate (ASTM C144) about 49 wt % to about 59 wt %;
• type II hydraulic Portland cement about 15 wt % to about 25 wt %;
• class C or class F fly ash about 1 wt % to about 20 wt %;
• polycarbonate superplasticizer about 0 wt % to 2 wt %;
• polypropylene microfibers, about 0.25 to about 1.5 inches long, about 0.8 wt % to about 1.16 wt %;
• and
• water about 11 wt % to about 21 wt %.