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The Leuna works (German: Leunawerke) in Leuna, Saxony-Anhalt, is one of the biggest chemical industrial complexes in Germany. [1] [2] The site, now owned jointly by companies such as TotalEnergies, BASF, Linde plc, and DOMO Group, covers 13 km 2 and produces a very wide range of chemicals and plastics. Leuna-Werke, Destillationsanlagen
Superplasticizers (SPs), also known as high range water reducers, are additives used for making high-strength concrete or to place self-compacting concrete. Plasticizers are chemical compounds enabling the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more. These ...
High-pressure chemistry is concerned with those chemical processes that are carried out under high pressure – pressures in the thousands of bars (100 kPa) or higher.High-pressure processes are generally faster and have a higher conversion efficiency than processes at ambient pressure.
Fluor Awarded Chemicals Project for BASF in Germany EPCM Services Contract for TDI Complex Project IRVING, Texas & HAARLEM, the Netherlands--(BUSINESS WIRE)-- Fluor Corporation (NYS: FLR ...
Autoclaved aerated concrete (AAC) is a lightweight, precast, cellular concrete building material. It is eco-friendly, and suitable for producing concrete-like blocks. [1] It is composed of quartz sand, calcined gypsum, lime, portland cement, water, and aluminium powder. [2] [3] AAC products are cured under heat and pressure in an autoclave.
Concrete is damaged if it does not reach a strength of 500 pounds per square inch (3.4 MPa) before freezing. [3]: 19 Typical chemicals used for acceleration today are calcium nitrate (Ca(NO 3) 2), calcium nitrite (Ca(NO 2) 2), calcium formate (Ca(HCOO) 2) and aluminium compounds.
When it reacts with concrete, it causes the slab to expand, lifting, distorting and cracking as well as exerting a pressure onto the surrounding walls which can cause movements significantly weakening the structure. Some infill materials frequently encountered in building fondations and causing sulfate attack are the following: [2] Red Ash
This expansive chemical reaction occurring in the concrete matrix generate high tensile stress in concrete and creates cracks that can ruine a concrete structure. However, hot gas is run to waste so the process is inefficient and increases kiln fuel consumption.