Uncertainties on the Unconfined Compressive Strength of Raw and Textured Concrete

For many years, starting in the 1960s and 1970s, concrete was known only as a utilitarian material providing mechanical strength and durability for new construction (civil works; bridges, tunnels, and administrative and residential buildings). Today, environmental considerations complement the design of structures. Aesthetics has been treated differently, it has been too often forgotten in the construction of large complexes for many years, to become the “unloved” grey material. Indeed, raw concrete surfaces tend to be porous and have a relatively uninteresting appearance. However, Auguste Perret, the French architect of reinforced concrete was the initiator of the use of concrete as a stone in the design of building facades. The present study concerns the uncertainties on the Unconfined Compressive Strength (UCS) of raw and textured concrete. For do this, the nine raw concrete samples and the nine texture concrete samples were prepared. Thereafter, the Unconfined Compressive Strength test was carried out to measure the Unconfined Compressive Strength values. The corresponding uncertainties are evaluated to quantify the uncertainties on the Unconfined Compressive Strength for raw and texture concrete samples. Finally, the compression of the Uncertainties on the Unconfined Compressive Strength of raw and textured concrete samples was done.