Whenever the worldview of evolution is questioned, the topic of carbon dating always comes up. Here is how carbon dating works and the assumptions it is based upon. Radiation from the sun strikes the atmosphere of the earth all day long. This energy converts about 21 pounds of nitrogen into radioactive carbon
St. Astier Blog | Understanding Concrete Carbonation
March 29 UPI -- Researchers have optimized a process to turn rubber tire waste into graphene, which can be added to concrete to curb carbon emissions, according to a study published Monday in the journal Carbon. Though recycled tire waste is already a component of Portland cement, graphene strengthens concrete "at the molecular level," so less concrete has to be used for roads, according to researchers. Tour co-led the research to develop the optimized process for turning waste from rubber tires into graphene, along with assistant professor of civil and environmental engineering Rouzbeh Shahsavari. Researchers previously developed a process that involves a jolt of electricity to convert plastic and food waste into graphene, a lab video shows. The process is called a flash process since it emits a bright flash.
Most everyone has heard of Carbon dating on the news or elsewhere sometime in the past years. In this article I hope to explain the theoretical and physical science behind Carbon dating, and discuss how it affects our lives and the validity of the process. Scientists use Carbon dating for telling the age of an old object, whose origin and age cannot be determined exactly by normal means. Because of this method Chemistry has become intertwined with History, Archeology, Anthropology, and Geology.
Over time, CO2 in the atmosphere reacts with the calcium oxide in concrete to form calcium carbonate; a process called carbonation. This is essentially a reversal of the chemical process that occurs when making the cement used in concrete i. Carbonation is a slow and continuous process that progresses from the outer surface moving inwards.