What Role Do Early Strength Agents Play?
Gazprom recently said it had completely suspended gas supplies to Bulgarian Gas company and Polish Oil and Gas Company (PGNiG) because it was not being paid in rubles. Russia said it would resume gas supplies after it agreed to pay for them in rubles.
Bulgaria and Poland announced Monday that they have received a notice from Russia to suspend natural gas supplies from Monday.
Russian President Vladimir Putin on March 31 signed a presidential decree to settle gas trade with "unfriendly" countries and regions in rubles. When the new rules took effect on April 1, Presidential press secretary Dmitry Peskov said Russia would not immediately "cut off gas" to Europe, as the cost of gas supplies starting April 1 should be settled in the second half of April or May.
Because of the ever-changing international situation, the supply and prices of international bulk early strength agent are still very uncertain.
What is Early Strength Agent?
Early strength agent is an admixture which accelerates the development of concrete early strength and has no significant effect on later strength.
Under the premise of ensuring the quality of concrete, early strength agent can greatly shorten its final setting time, make it as early as possible, and then accelerate the turnover of template, save template dosage, save energy and save cement, reduce production costs, and improve the output of concrete products.
The cement in the concrete used in construction takes a long time to set and harden before it reaches strength. But in some large engineering concrete precast components or in the cold season construction, often need in a short time to obtain higher strength. Therefore, in the process of concrete mixing, it is common to add early strength agent to achieve the purpose of hardening in a short time.
Early strength agent can greatly improve the strength of cement slurry, mortar and concrete. Adding early strength agent into concrete mixture not only ensures the effect of reducing water, strengthening and compacting of concrete, but also gives full play to the advantage of early strength agent. Adding early strength agent into concrete can ensure the quality of concrete and improve the progress of the project, greatly simplify and reduce the requirements for curing conditions.
Role of Early Strength Agents:
1. Make concrete in a short time to achieve higher strength, to meet the requirements of bearing external forces.
2. When the temperature is low, the hardening strength of mortar is slower, especially in some frozen soil, the lower the strength of mortar is more harmful to mortar, if mortar is damaged by freezing will cause permanent damage to mortar, so early strength agent must be added at lower temperature.
Difference between Early Strength Agents and Early Strength Water Reducing Agents:
Early strength agents added to concrete can harden cement in a short time, especially in low-temperature environments, the role of this product is more obvious. The role of early strength water reducing agent is to reduce water in 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 early strength agent.