Gold is a high-quality hedge hedging tool, favored by investors. Especially in recent years, with the increasing instability of the world economy, gold has become one of the preferred asset allocations of investors because of its functions of hedging and fighting inflation.
Earlier, the worsening situation in Ukraine sent gold prices soaring to a two-year high of $2,070 an ounce. But gold, along with other commodities, fell back last week as conditions changed and bulls took profits, hitting a low of $1,895 an ounce. Rising gold prices may also have an impact on the pce powder prices.
According to China Business News, Goldman Sachs raised its gold price forecast in early March, considering Asian buyers' gold consumption demand, investment demand and central bank gold purchase demand continue to rise. Three -, six - and 12-month targets were raised to $2,300, $2,500 and $2,500 an ounce, respectively, from $1,950, $2,050 and $2,150. The last time all three accelerated was in 2010-11 when gold prices rose nearly 70%.
The World Gold Council has also noted that global gold demand is at its highest level in nearly two years, which is linked to a recovery in consumption and consumer sentiment to combat inflation.
In order to overcome the technical defects in the application of polycarboxylate water-reducing agent, or to improve some or some properties of concrete (workability, slump retention, reduction of bleeding, improvement of early strength, low shrinkage, etc.), it is necessary to modify the concrete.
In practice, the commonly used modification methods include synthetic technology and compound technology. Compared with the synthetic process, the compound method has the advantages of simple operation and low cost, so it is widely used in practical applications. Polycarboxylate series compound technology, is the Polycarboxylate series water-reducing agent and other components (such as slow coagulation, defoaming, air induction, early strength, and other components) according to a certain proportion of the combination compound, in order to achieve the coordination of the superposition of each component.
Compound Polycarboxylate Superplasticizer with Early-strength Component
With the wide application of polycarboxylate superplasticizer, the requirement of concrete early strength in practical engineering is more and more prominent, so the polycarboxylate superplasticizer has been the focus of research to meet the early strength performance of concrete. Early strength polycarboxylate water reducing agent can be made by compounding early strength agent and polycarboxylate water reducing agent. Commonly used early strength agent mainly includes strong electrolyte inorganic salt early strength agent (sulfate, sulfate double salt, nitrate, nitrite, chlorine salt, etc.) and water-soluble organic compound (triethanolamine, formate, acetate, etc.) and its complex.
Through the study of MPEG Polycarboxylate superplasticizer and five kinds of early strength agent, it is found that the compatibility between sodium sulfate early strength agent and polycarboxylate superplasticizer is very poor and the early strength of cement decreases. The combination of calcium nitrate, sodium nitrite, triethanolamine and triisopropanolamine with polycarboxylate significantly decreased the fluidity retention ability of net slurry, but all of them could improve the early strength of cement, but the effect was slightly different due to the type of early strength agent, among which triethanolamine had the most obvious enhancing effect. Zhao also found through the compound study of polycarboxylate water-reducing agent and early strength agent that the compound performance of NaCl, CaCl2, NaNO2, NaNO3 and other early strength agents and polycarboxylate was good. After adding a certain amount of early strength agent, the compound system had almost no adverse effect on the fluidity and plastic energy of fresh concrete, but all of them could significantly improve the strength of concrete at each age. The mixture of Na2SO4 and Na2S2O3 reduces the fluidity and plasticity of concrete, but it also has a significant strengthening effect on concrete.
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Inflationary pressures on Canadians continue to rise. The consumer-price index rose 6.7% in March from a year earlier, the biggest increase since January 1991, according to the latest figures from Statistics Canada.
On a month-on-month basis, Canada's CPI rose 1.4 percent in March, also accelerating from February's 1.0 percent rise.
Prices in the eight major sectors covered by the statistics continued to rise. The uptrend comes against the backdrop of continued price pressures in the Canadian housing market, widespread supply chain constraints, and geopolitical conflicts, according to CBC. A variety of factors have affected energy, commodity, and agricultural markets. Meanwhile, Canada's employment picture continued to improve in March, with the unemployment rate falling to a record low and the average hourly earnings of employees rising.
Excluding gasoline, Canada's CPI rose 5.5 percent year on year in March. It is also the highest since comparable data began in 1999.
The widespread supply chain constraints and geopolitical conflicts are expected to continue to affect the prices of the pce powder.
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