<p>A latex-asphalt emulsion composition comprising a cationic latex prepared by the emulsion-polymerization of a diene in the presence of an emulsifier of an inorganic or organic acid salt of an N-alkylpropylene diaminepolyglycol ether having the formula (CnH2nO)xH R-N-(CH2)3-N ANGLE ¦(CnH2nO)yH (CnH2nO)zH wherein R represents a C12-20 saturated or unsaturated aliphatic hydrocarbon radical; x, y and z represent 0 or an integer such that 0 < x + y + z </= 3; and n represents the integers 2 or 3; and further comprises an alumina sol, asphalt or an asphalt emulsion.</p>
