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A concrete densifier is a chemical applied to a concrete surface in order to fill pores, increasing surface density [clarification needed].Chemical densifiers are used on polished and non-polished concrete to reduce dusting and wear; on polished concrete surfaces densifiers help concrete take a better polish and make the surface less permeable to liquids so the slab does not require sealing.
In 2001, a diamond-like-structured c-BC 2 N was synthesized at pressures >18 GPa and temperatures >2,200 K by a direct solid-state phase transition of graphite-like (BN) 0.48 C 0.52. The reported Vickers and Knoop hardnesses were intermediate between diamond and c-BN, making the new phase the second hardest known material. [39]
The European Council (informally EUCO) is a collegiate body ( directorial system) that defines the overall political direction and priorities of the European Union. The European Council is part of the executive of the European Union (EU), beside the European Commission. It is composed of the heads of state or of government of the EU member ...
Material properties of diamond. Burns above 700 °C in air. Diamond is the allotrope of carbon in which the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. It is a crystal that is transparent to opaque and which is generally isotropic (no or very weak birefringence ).
FIFA World Cup final. Founded. 1930; 94 years ago. ( 1930) Current champions. Argentina (3rd title) Most successful team (s) Brazil (5 titles) The FIFA World Cup is an international association football competition contested by the senior men's national teams of the Fédération Internationale de Football Association (FIFA), the sport's global ...
The Magan boat sails on a maiden voyage across the Persian Gulf in March. - Emily Harris/Zayed National Museum. Using a supply list written on a clay tablet, a team of experts in the United Arab ...
Diamond production [2] (million USD) Country 2021 production 2020 production Botswana 4657: 2521 Russia 2643: 2255 Angola 1626: 1017 Canada 1512: 929 South Africa 1360: 959 Namibia
August 3, 2024 at 3:12 AM. [Reuters] A $4 billion (£3.1 billion) settlement has been announced for claims from more than two thousand people seeking compensation over last year's deadly wildfires ...