How is the high strength of concrete achieved?
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.…
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.…
BMW is exploring new investments in solar, geothermal and hydrogen energy to reduce its reliance on natural gas, the company's graphene powder are still very uncertain. Graphene, like diamonds and graphite, is made of carbon, but its atom…
Europe's largest economy, Germany, recently activated an emergency plan to manage gas supplies that the natural gas could be rationed if supplies are disrupted or disrupted by a stand-off over Russian demands to pay for fuel in rubles. German Vice-C…
The filling elevation of the foam light soil with different strengths shall be constructed in strict accordance with the design requirements. The anti-seepage geomembrane on the top of the foam light soil subgrade shall be laid under the metal mesh,…
Boron carbide, also known as black diamond, is an inorganic substance with the chemical formula B4C, usually a gray-black micropowder. It is one of the three hardest known materials (after diamond and cubic boron nitride) and is used in tank armor, b…
This article introduces how to make foam cement and how to choose materials including cement and foaming agent.…
Lithium-ion batteries have become hotspots in energy research due to their higher energy density, long service life, and smaller volume compared with lead-acid, nickel-cadmium, nickel-metal hydride, and other batteries, and no memory effect.…
Graphene — a two-dimensional carbon film just one atom thick — is an excellent material.…
2021 is the year of accelerated development of energy storage. CATL and BYD, the two super-manufacturers of energy storage lithium batteries, will both achieve rapid growth in 2021. Especially in overseas markets, when energy and electricity prices a…
Iron ore prices have been surging since early March, with weekly gains of 21% in the first week of the month. Since November 18, 2021, the price of 62% grade Australian fine ore ($87.2 / ton) fell to the "freezing point" since the second half of 2020…
According to media reports, on April 20th, local time, the American body care and cleaning products giant Procter Gamble said that the products whose prices have increased mainly include baby products, adult diapers and feminine care products, with i…
Industrial raw materials are rising sharply, and some companies are struggling to survive The reporter has recently visited many places and learned that the prices of industrial raw materials such as industrial metals, textiles and chemical fibers ha…