If the compatibility of polycarboxylate superplasticizer and cement is not good, the concrete mixture is prone to some problems, such as segregation, bleeding, greater slump loss, shorter setting time and so on, so that the concrete mixture can not b…
The first method is direct nitridation of titanium powder or TiH2.…
Tungsten disulfide is an extremely smooth dry film lubrication coating.…
Tungsten boride is a black powder with the following physical properties:molecular formula WB2,with metallic conductivity,soluble in aqua regia.…
Tungsten disulfide is an extremely smooth dry film lubrication coating.…
At first, concrete additives were used only to save cement. With the development of construction technology, admixture has become the main measure to improve the performance of concrete.…
Silicon sulfide, the molecular formula is SiS2. White fibrous orthorhombic or tetragonal crystals are stable at normal temperature and pressure.…
Titanium nitride is an extremely hard and inert thin film coating, which is mainly used in precision metal parts.…
The wide application of mineral admixtures mainly derived from industrial solid wastes diversifies the composition of cementitious materials, which is one of the main characteristics of modern concrete.…
Green chrome oxide (Cr2O3 powder) is extremely stable and have excellent weather resistance. It's insoluble in water, acid and organic solvents, slightly soluble in sodium hydroxide solution, only soluble in hot sodium bromate solution, hot concentra…
Boron carbide (B4C) is grayish black and is a very hard man-made material.…
France's annual inflation rate hit 6.1 percent in July 2022, rising further from 5.8 percent in June, the highest since July 1985, the National Institute for Statistics and Economics (Insee) said.…