Highly absorbent sponge concrete

Abstract

A highly absorbent concrete material including a porous concrete with an open porosity ranging from 15% to 40%, preferably from 25 to 35%, said porous concrete including interconnected pores at least partially filled with an absorbent mineral composition, said absorbent mineral composition including 90 wt.-% or more, preferably 95 wt.-% or more, relative to the total weight of the absorbent mineral composition, of: cement, and a viscosity modifying agent, wherein the absorption capacity and/or the capillarity absorption of the absorbent mineral composition is typically of 50 wt.-% or more, relative to the total weight of the absorbent mineral composition. A process for preparing the absorbent concrete material and uses thereof.

Dependencies are inferred from the claim text.