Where are concrete admixtures used?
The recent visit by US House Speaker Nancy Pelosi has boosted US-Taiwan relations at a time of increasing tension between Washington and Beijing. She vowed that the United States would protect Taiwan's democratic autonomy. "The United States is still determined to safeguard Taiwan's democracy," she said in a meeting with Taiwan's president, Tsai Ing-wen.
Pelosi's visit to Taiwan sparked anger in Beijing, which denounced Pelosi's visit as "extremely dangerous" to geopolitical stability. After Pelosi's visit, Beijing conducted the largest-ever military exercise near Taiwan, encircling the island with live-fire rockets and ballistic missiles. In addition, China announced that it would stop cooperation and dialogue with the United States on issues such as climate and cross-border crime prevention, indicating Beijing's intention to fight back against the United States over what it believes to be interference in China's affairs.
But perhaps most importantly for the business community, recent events have exacerbated the showdown between China and the US in the most important area of the global economy: semiconductor chips. The Sino-US chip battle, which has been brewing for years, has now reached a critical crossroads, experts say, as the two superpowers compete for technological and economic dominance. The world's chipmakers may soon be forced to choose between Washington and Beijing.
Because of the turbulent international situation, the supply and prices of many international bulk concrete additive are still very uncertain.
At first, concrete additives were used only to save cement. With the development of construction technology, admixture has become the main measure to improve the performance of concrete.
What are advantages of concrete additives?
It can reduce the water consumption of concrete. Or the fluidity of concrete can be increased without increasing water consumption.
The setting time of concrete can be adjusted.
Reduce bleeding and segregation. Improve workability and water elutriation resistance.
The slump loss can be reduced. Increase the pumpability of pumping concrete.
It can reduce contraction. The addition of expansive agent can also compensate for shrinkage.
Delay the initial hydration heat of concrete. Reduce the temperature rise rate of mass concrete and reduce the occurrence of cracks.
Improve the early strength of concrete. Prevent freezing at negative temperature.
Improve strength, increase frost resistance, impermeability, wear resistance, corrosion resistance.
Control alkali-aggregate reaction. Prevent the corrosion of steel bar and reduce the diffusion of chloride ion.
Made into concrete with other special properties.
Reduce the viscosity coefficient of concrete.
Where are concrete admixtures used?
1. It is suitable for mass concrete, high-strength and high-performance concrete, roller compacted concrete, concrete constructed in hot weather, concrete poured in a large area, concrete produced by cold joints, concrete that needs to be parked or transported for a long time, self-leveling vibration-free concrete, slip form construction or horizontal construction and other concrete that needs to delay setting time.
2. It is suitable for different grades of concrete under the daily minimum temperature of 5 degrees Celsius, as well as various continuous pouring projects of high flow concrete, commercial concrete, pumping concrete, prestress and reinforced concrete.
3. It is not suitable to be used alone for concrete with early strength requirements and steam curing concrete.
Concrete Additives Supplier
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A spokesman for the Turkish presidential palace recently: the Black Sea Grain Export Joint Coordination Center may soon complete the final work of Ukraine's grain export route. The first ships carrying Ukrainian grain are expected to leave Ukraine's Black Sea port of Odessa on August 1 and re-export food to the international market. The grain ship will arrive in Istanbul, Turkey, as early as August 3, and then go to African countries.
Ukraine and Russia are both big grain exporters, among which Ukraine is known as the "granary of Europe". After the conflict between Russia and Ukraine broke out in February this year, grain exports of both countries were disrupted. The Ukrainian side accused the Russian army of blocking the Black Sea port on the Ukrainian side, resulting in more than 20 million tons of grain stranded in the port and unable to be transported by sea. The Russian side refutes this claim, accusing the Ukrainian side of laying a large number of mines in the waters near the port of the Black Sea, endangering navigation safety.
After coordination, Turkey, Russia, Ukraine and the United Nations Quartet signed an agreement in Istanbul on July 22 aimed at reopening blocked Black Sea transport routes. Ships carrying food can safely travel to and from three ports in southern Ukraine so that the stranded food of Ukraine can be transported to the international market. Russia and Ukraine agreed that neither side would attack ships carrying agricultural concrete additive are still very uncertain.