In international trade, the indirect and local inspection of import and export commodities is closely related to the vital interests of buyers and sellers, as it involves inspection rights, inspection agencies and related claims.…
After the pce superplasticizer is added to the cement, the sodium aluminate and sodium carbonate in its main components react rapidly with the gypsum in the cement to form sodium sulfate in the alkaline solution, so that the gypsum loses its original…
The filling elevation of the foam light soil with different strengths shall be constructed in strict accordance with the design requirements. The anti-seepage geomembrane on the top of the foam light soil subgrade shall be laid under the metal mesh,…
Cement foaming agent is called foamed concrete foaming agent. It refers to an admixture that can reduce the surface tension of liquid and produce a large amount of uniform and stable foam. It is an admixture used to produce foamed concrete and can pr…
How to judge the angular contact thrust bearing failure A sound meter is used to check the size and sound quality of the rolling sound of the angular contact thrust bearing in operation. Even if the bearing is slightly damaged such as peeling, abnorm…
Graphene — a two-dimensional carbon film just one atom thick — is an excellent material.…
The purity of carbonaceous raw materials such as petroleum coke and pitch coke is relatively high, and the ash content is usually less than 0.5%, while the purity of natural graphite treated by flotation is relatively low, and the carbon content is u…
This product has a yellowish liquid that is tasteless, with a boiling temperature of 235-245 degrees Celsius. Its relative density (25C) is 0.91, and its solubility in organic solvents. Alcohol, however, does not dissolve it. The HLB value for this p…