What's the role for nano silver? Nano silver is comprised in silver nanoparticles. They can be used as an antifungal, antibacterial agent in industries, as well as in water treatments, and merchandise for consumer use (such as clothing, cosmetics su…
A tanker carrying 650,000 barrels of Venezuelan crude oil is reportedly bound for Europe, the first time Venezuela has exported crude to Europe in the past two years under US sanctions. It is analyzed that the U.S. is making up for the European ener…
The spread of the novel coronavirus is taking a direct hit on the operations of airlines in Asia. About 500,000 flights taking off and landing in mainland China have been canceled since January, according to aviation information company Cerium. Touri…
In the summer when the temperature is high and the air humidity is low, due to the accelerated hydration reaction at high temperature, the moisture is easy to evaporate, the mortar fluidity loss is fast and the setting time is shortened, the construc…
The bubbles in concrete above 100μm are called large harmful bubbles, 100 ~ 50μm are called harmful bubbles, 50 ~ 20μm are called low harmful bubbles or harmless bubbles, and those below 20μm are called beneficial bubbles.…
The first method is direct nitridation of titanium powder or TiH2.…
Adding polycarboxylate superplasticizer can make the compressive strength of precast concrete reach 40MPa grade at 8h to 18h.…
First of all, pay attention to the storage environment of polycarboxylate superplasticizer, try to store polycarboxylate superplasticizer in a cool, ventilated, no direct sunlight place.…
Foam concrete natural maintenance can be divided into two types: cover-up sprinkler maintenance and plastic film maintenance.…
Cement is the main raw material of foam concrete. Because foamed concrete is mostly cured at room temperature and mixed with a large amount of foam, these two points determine its high cement proportion.…
Expandable graphite or exfoliated graphite is made from the naturally occurring mineral graphite. The layered structure of graphite allows molecules to be inserted between the graphite layers. By adding acid, graphite sulfate can usually be converted…
The phenomenon of aggregate sinking and water floating will occur in the process of transportation, vibration and pumping of concrete.…
Fatih Birol, executive director of the International Energy Agency (IEA), said Wednesday that the European Union could face a shortage of about 27 billion cubic meters of gas in 2023, or about 6.8 percent of the bloc's benchmark total gas demand.…
The HLB is 15 and it has wetting and foaming as well as diffusion. About Polyoxyethylene(20)sorbitan monooleate: Oil is light yellow to amber in color at room temperatures, soluble with water, aniline and ethyl-acetate. Vegetable oil and mineral o…
Use powdered, nickel-based metallics to create components for both aerospace and industrial purposes. Laser cladding might be possible. Particle sizes: 0-45mm, 0-53mm, 15-40mm, 15-50 mm. 15-53mm, 15-40 mm. 45-105mm. Colour: Gray-black Use: 3D printin…