Water- Water is needed to chemically react with the cement (hydration) and too provide workability with the concrete. The amount of water in the mix in pounds compared with the amount of cement is called the water/cement ratio. The lower the w/c ratio, the stronger the concrete. (higher...
the basic substance will dissociate into its component ions in aqueous solution even when the pH is already strongly basic (i.e. pH of about 12 or higher). The pH scale technically goes higher than 14.0, but this level of hydroxide ion concentration is hard to produce chemically and rarely ...
molten rock called plumes rise to form volcanoes in the planet's crust. This spot is called a hotspot, and it creates atype of volcano not associated with a plate boundary. Yellowstone has produced three calderatypes of volcanic explosions: The first happened 2.1 million years ago at Huckleberr...
Glass is known for its transparency and ability to transmit light, which makes it useful for applications where visibility is important, such as windows. It is also known for its resistance to weathering, making it an ideal material for outdoor applications. Additionally, glass is chemically resis...
activity - A general term used to describe how chemically reactive a particle is with ions, water, and other particles. clay - A mineral particle smaller than 0.002 mm. clay synthesis - Clays are formed in soils through the transformation of existing clays or through the generation of entirel...
It is chemically expressed as 3CaO.SiO2. About 50-60% of the cement paste strength is owing to the presence and proportion of tri-calcium silicate. The strength of the first 7 days (a week) of concrete pour is because of tri-calcium silicate. ...
Meth, also known as methamphetamine, is a man made drug with some nasty effects that change your body physically and chemically. Physical change is the change in shape, size, and color, it affects the structure of the substances, not the substance itself. A chemical change is changing the ...
Bats, swallows and more are chemically preserved in the pose in which they perished, sealed in the deposits of sodium carbonate in the water. The lake’s landscape is bizarre and deadly—and made even more so by the fact that it’s the place where nearly 75 percent of the world’s ...
There is no universal definition for "natural soap". Find out why we consider Goat Milk Stuff soap to be natural and how we strive to keep it that way.
Which is pozzolanic material? A pozzolan is asiliceous or siliceous and aluminous materialthat in itself possesses little or no cementitious value but will, in finely divided form and in the presence of moisture, chemically react with calcium hydroxide at ordinary temperatures to form compounds having...