CONCRETE STRUCTURE HAVING FOULING-PREVENTIVE FUNCTION AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To produce the concrete structure in which no crack on the surface of concrete is caused and fouling can be prevented from being caused over a long period and washing of which is not required. SOLUTION: This concrete structure is composed of one or more layers and contains a superplasticizer, wherein at least one layer of these one or more layers contains titanium oxide and the surface layer of the concrete structure is either a concrete surface layer having a 1 to 50mm thickness or a mortar layer that contains titanium oxide and has 1 to 10mm thickness. This production comprises: adding powdery titanium oxide to a concrete composition at the time of mixing concrete, to mix them together and to obtain a concrete mix, thereafter, casting the resulting concrete mix contg. titaminum oxide into a form, or alternatively, casting the concrete mix contg. titanium oxide into a form so as to have a prescribed thickness, to form a surface layer and then, further casting a separately prepared concrete mix having no titanium oxide into the form.