Carbonatable calcium silicate-based cements and concretes are presented, which result in concrete compositions that have an improved aesthetics. A cement product includes a plurality of particles of a carbonatable calcium silicate cement and a first additive; wherein, the first additive is a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.

Carbonatable calcium silicate-based cements and concretes are presented, which result in concrete compositions that have an improved aesthetics. A cement product includes a plurality of particles of a carbonatable calcium silicate cement and a first additive; wherein, the first additive is a hydrophobic organic acid, or a salt thereof, or a silane, or a polysiloxane.

The invention relates to a roof coating comprising a bitumen layer with embedded particles.

A preparation provides light or radiation attenuation between about 190 and 800 nm has an amount of diamond nanoparticles in a medium, where the diamond nanoparticles have a size between about 1 nm and 1000 nm are modified to enhance absorption or photoluminescence. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

A preparation provides light or radiation attenuation between about 190 and 800 nm has an amount of diamond nanoparticles in a medium, where the diamond nanoparticles have a size between about 1 nm and 1000 nm are modified to enhance absorption or photoluminescence. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

A preparation provides light or radiation attenuation between about 190 and 800 nm has an amount of diamond nanoparticles in a medium, where the diamond nanoparticles have a size between about 1 nm and 1000 nm are modified to enhance absorption or photoluminescence. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

The invention relates to a roof coating comprising a bitumen layer with embedded particles.