On Thursday, U.S. time, U.S. stocks staged a "roller coaster" market throughout the day.The three major stock indexes opened higher collectively. Then, during the Federal Reserve Chairman Powell’s attendance at the congressional hearing, the market’s…
Japan is a country that suffers a lot of typhoons. Yokohama National University and start-up companies are developing technologies that use typhoons to generate electricity to turn harm into profit.According to the "Nihon Keizai Shimbun" Chinese vers…
Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and c…
Foam concrete has a low density. In practical application, the density grade of ordinary foam concrete is 300 kg/m3~1200kg/m3.…
The World Bank expects global economic growth to slow significantly, from 5.5% in 2021 to 4.1% in 2022 and further to 3.2% in 2023. Growth in East Asia and the Pacific is expected to slow to 5.1 percent in 2022, reflecting the impact of China's econo…
This article will continue to talk about the influences of concrete foaming agent on foam concrete.…
Concrete is an indispensable raw material in the construction of construction projects. In the process of preparing concrete, in order to improve the performance of concrete, it is necessary to add water reducing agent after adding water, stone, sand…
The cement foaming agent is the key to the quality of foamed concrete. A good cement foaming agent can be made into high-quality foamed concrete.…
Concrete is classified as high-strength concrete based on 28-day strength. Until the 1970s, concrete with a strength of more than 40Mpa was classified as high-strength concrete.…
Whether the cement used and the pumping agent are matched and adapted must be obtained through the adaptability test. The optimum amount of the pumping agent should be determined through the adaptability test with the cement cementitious material.…
The influence of cement foaming agent on the quality of foamed concrete is extremely critical. A good cement foaming agent can make high-quality foamed concrete. How the various performance indicators of cement foaming agent affect the quality of foa…
This article will talk about different types of high-efficient water reducers and the mechanism of superplasticizers.…