Concrete is a mixture of a graded aggregate, sand, water, and cement. It is necessary to study the influence of concrete components on the effect of the high-efficient superplasticizer in order to give full play to their due effect.…
The German import price index rose 4.3 percent month-on-month and 32.7 percent year-on-year in August 2022 due to energy shortages, the largest year-on-year increase since March 1974, data from the German Federal Statistical Office showed on October…
Molecular Sieve 13X (alkali metal silicon aluminate) is a particular type. Its effective aperture in sodium salt forms is 10 angstrom. However, it can adsorb molecules that are smaller than 10 to 10 angstrom. It is suitable for use as catalyst carrie…