Introduction to Concrete Additives (3)
Analysts at JPMorgan recommended selling or "underweight" emerging market local currency sovereign debt because of the global impact of the Ukraine-Russia crisis.
JPMorgan estimated that fixed-income assets in emerging markets have lost 6-9 percent of their value since Russia invaded Ukraine a month ago, with nervousness about the war and its impact on global energy and food prices adding to existing pressures.
Some leading emerging market central banks are signaling that interest rates now need to rise faster than previously expected, which fuels fears of "stagflation". Stagflation means when high inflation and higher interest rates undermine economic growth.
With both the U.S. Federal Reserve and emerging market central banks raising interest rates, JPMorgan also said it made sense to "underweight" emerging market assets by taking advantage of the recent pullback in local currency bond yields relative to TREASURIES.
JPMorgan said major metals exporters such as South Africa, Chile, and Peru could still do well, but warned that emerging market fixed income assets now faced a more "stagflationary" trajectory.
The markets and prices of many commodities, metals, chemicals like the concrete additive still face uncertainty.
The concrete additive is a material that can improve the properties of the concrete mixture or hardened concrete by adding not more than 5% of the weight of cement in the process of mixing concrete (except for special circumstances).
Using concrete additives is one of the most effective ways to improve concrete strength, improve performance and save cement and energy.
There are various types of concrete additives. In the last article Introduction to Concrete Additives (2), we talked about set retarders, air-entraining agents, and accelerating agents. In this article, pumping agents, water-proofing additives, and anti-freezing agents are going to be talked about.
Pumping agent, or concrete pumping agent:
It is a kind of additive which can improve the pumping performance of concrete, and has an excellent effect of reducing water and enhancing the effect of retarding and maintaining plastic. Pumping performance refers to the performance that the concrete mixture can run smoothly through the pipeline without blocking and segregation, and has good viscoplastic performance. Pumping agents can be divided into non-entrained dosage form (the main group is divided into calcium lignosulfonate, high-efficient water reducer, etc.) and entrained dosage form (the main group is divided into water reducer, air-entraining agent, etc.). Pumping agents can also be divided into liquid pumping agents and solid pumping agents.
It is suitable for the preparation of pumping concrete, commercial concrete, mass concrete, large flow concrete, summer construction, sliding form construction, large formwork construction, and other occasions. Using pumping agents can improve the workability of concrete mixture, reduce the performance of bleeding and segregation, increase the consistency, save cement, improve the compressive resistance, flexure resistance, tensile strength, and delay the hydration heating rate, avoid cracking, make concrete denser, and improve impermeability and durability.
The cement water-proofing agent is a kind of chemical additive. Adding water-proofing agents in cement, when cement condenses harden, subsequently volume expands, has the action that compensates contraction and tensioning steel bar to produce prestress and fill cement gap adequately. It can be used for basement, toilet, reservoir, purification pool, tunnel and roof, roof, ground, wall, and other waterproof engineering projects.
The anti-freezing agent is a kind of additive that can make concrete harden under negative temperature and achieve expected performance and enough antifreeze strength under specified curing conditions. In other words, it is a substance that prevents water from freezing in materials at low temperatures. It can be used with water reducers and air-entraining agents together to achieve better results. It can be used in all kinds of concrete works, in cold season construction. It can make concrete hydrate normally, reduce its freezing point, and improve its early strength in negative temperature environments.
Suppliers of Concrete Additives
TRUNNANO is a reliable concrete additives supplier with over 12-year experience in nano-building energy conservation and nanotechnology development.
If you are looking for high-quality concrete additives, please feel free to contact us and send an inquiry. (firstname.lastname@example.org)
We accept payment via Credit Card, T/T, West Union, and Paypal. Trunnano will ship the goods to customers overseas through FedEx, DHL, by air, or by sea.
The United States urges the U.N. Security Council to impose additional sanctions on North Korea in response to its latest ballistic missile launch, including a ban on tobacco and oil exports to North Korea and a blacklist of the Lazarus hacking group.
The United States circulated the draft to the 15 members of the Security Council this week. It was not immediately clear if or when a vote would take place. A resolution requires nine "yes" votes and no vetoes from Russia, China, France, Britain, or the United States.
Russia and China have already voiced opposition to tightening sanctions in response to Pyongyang's launch of an intercontinental ballistic missile last month -- the first since 2017.
U.S. and South Korean officials and analysts also say there are growing indications that North Korea may soon conduct its first nuclear weapons test since 2017, too.
The U.S. -drafted U.N. resolution would expand the ban on ballistic missile launches to include cruise missiles or "any other delivery system capable of delivering a nuclear weapon."
The deal would halve crude oil exports to North Korea to 2 million barrels a year and refined oil exports to 250,000 barrels a year. The resolution also seeks to ban North Korea's export of "fossil fuels, mineral oils, and their distilled concrete additive are estimated to be influenced by international political situation changes.