The Rhine, which flows through Switzerland, Germany, France and the Netherlands, is an important shipping channel in Europe, and tens of millions of tons of goods are transported between countries through the Rhine every year. The persistent drought and lack of rain in Europe this summer has led to a drop in the water level of the Rhine, which has seriously affected shipping and exacerbated the energy crisis in Europe.
Argentina's economy minister and director of the National Social Security Agency recently announced that pensions for most of the country's retirees will rise by 15.53% from September. In addition, starting from September, retirees will receive an additional grant for three consecutive months, ranging from 4000 Argentine pesos to 7000 Argentine pesos.
It is understood that the range of people who can enjoy the pension increase is limited to those whose monthly income does not exceed twice the minimum social average wage (43353 Argentine pesos), which is expected to cover 85 per cent of the country's retirees.
The minister of economy said the increase in pensions is to help people cope with rising prices brought about by inflation. Argentina's monthly inflation rate in July has not yet been announced, and several agencies expect it to reach about 8 per cent, while Argentina's annual inflation rate is likely to exceed 100 per cent by the end of the year.
Because of the turbulent international situation, the supply and prices of many international bulk pce powder are still very uncertain.
Polycarboxylate superplasticizer is the third generation of high performance superplasticizer after common superplasticizer and superplasticizer. Compared with other kinds of superplasticizer, it has the advantages of strong molecular designability, high water reduction rate, good slump retention, low content of chloride and alkaline substances, and no pollution in production and use. In practical application, polycarboxylate superplasticizer is often compounded with a small amount of defoaming components, retarding components, air entraining components, viscosity modified components, etc., in order to meet different technical performance requirements of concrete.
The combination of sodium gluconate or sucrose as retarding component and polycarboxylate superplasticizer can increase the water reducing rate and slow down the slump loss of concrete to a certain extent, and improve the adaptability of superplasticizer and cement. But at the same time, polycarboxylate superplasticizer products often deteriorate quickly due to the addition of sodium gluconate, light performance is reduced, heavy is completely ineffective, bringing many uncertain factors to engineering use or directly leading to engineering accidents, this problem will be more serious in high temperature weather.
Phenomena and causes of deterioration of polycarboxylate superplasticizer:
At the initial stage of deterioration of polycarboxylate superplasticizer, there were light-colored fluffy or cotton floc-like plaques on the liquid surface, and then developed into discrete bulk floats, and strings of bubbles appeared from time to time.
When the deterioration is serious, the plaque will cover the whole liquid surface, showing thick green, brown and black suspended matter in the solution, accompanied by the formation of rotten sour gas. This deterioration is mainly caused by mildew.
The mildew of polycarboxylate superplasticizer is also related to its storage environment. Improper storage conditions, such as serious temperature rise in the storage space, not ventilated and humid, lead to the melting of large monomers, and the local temperature of the monomer is too high. Higher temperature will aggravate the movement of macromolecular chains. Once the dissociation energy of chemical bonds is exceeded, chain decomposition, irregular fracture and thermal decomposition will occur, resulting in faster deterioration of polymers. Similarly, the higher the temperature, the greater the activity of microorganisms, and the faster the mildew rate of superplasticizer.
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According to Reuters, U.S. Treasury officials said they would discuss with G7 leaders pricing caps and tariffs on Russian oil as an alternative to the embargo, which would keep the market supplied, limit price spikes, and reduce Russian revenues.
The EU foreign ministers' meeting was held in Brussels. The meeting failed to agree on the sixth round of sanctions, including an oil embargo on Russia, because of objections from Hungary.
EU High Representative for Foreign Affairs and Security Policy said at a press conference after the meeting, that the meeting failed to reach an agreement on the final adoption of the sixth round of sanctions, the permanent representatives of member states to the EU will continue to discuss. The foreign ministers faced similar difficulties trying to reach an agreement on an oil ban. He said Hungary's position was based on economic rather than political concerns.
Hungary is highly dependent on Russia for energy, getting more than 60 percent of its oil and 85 percent of its natural gas from Russia.
A few days ago, the European Commission submitted the sixth round of proposed sanctions against Russia, including a total ban on Russian oil imports by the end of this year. Hungary immediately objected and said it wanted substantial compensation from the EU to offset its loss from giving up Russian oil.
The pce powder price is predicted to increase in the next few days, due to geopolitical factors.
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