Color restoring concrete body

Claim 1

AS PART OF A ROAD COVERING, A SOLID CONCRETE BODY CONSISTING ESSENTTIALLY OF A MINOR PROPORTION OF A SUBSTANTIALLY WHITE HYDRAULIC CEMENT AND OF A MAJOR PROPORTION OF SUBSTANTIALLY WHITE AGGREGATE MORE THAN HALF OF SAID AGGREGATE HAVING A PARTICLE SIZE OF AT LEAST ABOUT 1 MM. AND AN EFFECTIVE FRACTION THEREOF A PARTICLE SIZE OF AT LEAST 3 MM., SAID CONCRETE BODY INCLUDING AS AN ESSENTIAL CONSTITUENT THEREOF AND FINELY DISTRIBUTED THERETHROUGH TITANIUM DIOXIDE IN AN AMOUNT EQUAL TO BETWEEN 2.4% AND 6% OF THE COMBINED AGGREGATE AND CEMENT DRY SOLIDS OF SAID CONCRETE BODY, WHEREBY UPON EXPOSURE OF SAID CONCRETE BODY TO MOIST ATMOSPHERIC CONDITIONS, A TITANIUM DIOXIDE SUSPENSION WILL BE FORMED COVERING THE FREE SURFACE OF SAID CONCRETE BODY INCLUDING ANY FOREIGN MATTER ADHERING THERETO, AND WHEREBY DUE TO SAID TITANIUM DIOXIDE COVERING, THE WHITE COLOR OF SAID CONCRETE BODY WILL BE PRESERVED.