The Biden administration plans to ease sanctions on Venezuelan oil to allow more of the country's crude to reach Europe. The U.S. will allow European companies still operating in Venezuela to immediately transfer more oil to the continent, while all…
OPEC+, an oil producers' alliance led by Saudi Arabia and Russia, stuck to its original plan to increase output by just 432,000 b/d in June, continuing to defy calls from major consumers led by the United States to pump more oil to keep prices down.…
Nano titanium carbide is one of the transition metal carbides with the highest hardness, but its brittleness is not suitable for pure use. They are added to tungsten-based cemented carbide at 5-30% by weight to increase hardness and high temperature…
Because the steric hindrance of the extended polymer side chain effectively hinders the secondary agglomeration between cement particles, so the product has high dispersion performance and can maintain this performance for a long time to realize the…
The boss of Leclerc supermarket Group, France's largest food retailer, said recently that in order to cope with the energy shortage, the Leclerc Group may shorten the opening hours of its stores.In an interview with French News Radio, Leclerc said th…
Polycarboxylate superplasticizer has more advantages than traditional naphthalene and aliphatic superplasticizer in mixing high strength grade concrete, but its advantages of high water reduction cannot be brought into full play when the strength is…
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.…
Adding polycarboxylate superplasticizer can make the compressive strength of precast concrete reach 40MPa grade at 8h to 18h.…
The impermeability of concrete is related to its porosity and pore structure.…
Polycarboxylate superplasticizer is based on unsaturated polymerizable monomers with active groups such as carboxyl group, sulfonic acid group, hydroxyl group and polyoxene group as raw materials.…
According to the different molecular structure, it can be divided into four generations of polycarboxylate series superplasticizer, the first generation is acrylic acid copolymer, the second generation is propylene ether type, the third generation is…
First of all, pay attention to the storage environment of polycarboxylate superplasticizer, try to store polycarboxylate superplasticizer in a cool, ventilated, no direct sunlight place.…
The American technology company Intel says it is working to address a shortage of semiconductor chips affecting the automotive industry. That same day, U.S. President Joe Biden convened CEOs for a virtual summit on the semiconductor supply chain. &qu...…
Natural river sand has been exhausted after decades of large-scale mining, concrete production enterprises began to use machine-made sand as fine aggregate on a large scale.…
The powder is white or colorless monoclinic flakes. Melting point: 38degC (anhydrous), 103.5degC (monohydrate). What is PTSA (P-Toluenesulfonic acid)? PTSA PTSA is characterized by a rich and fine foam. It is a global trusted brand PTSA PTSA (P…