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The alkali–silica reaction (ASR), also commonly known as concrete cancer, [3] is a deleterious internal swelling reaction that occurs over time in concrete between the highly alkaline cement paste and the reactive amorphous (i.e., non-crystalline) silica found in many common aggregates, given sufficient moisture.
The first known U.S. workers' compensation claim for asbestos disease was in 1927. In 1930, the first reported autopsy of a person with asbestosis was conducted in the United States and later presented by a doctor at the Mayo Clinic, although in this case the exposure involved mining activities somewhere in South America. [40]
Concrete dust released by building demolition and natural disasters can be a major source of dangerous air pollution. The presence of some substances in concrete, including useful and unwanted additives, can cause health concerns due to toxicity and (usually naturally occurring) radioactivity. [4]
G&B Construction: “Why you should Never use Salt on Concrete in Winter” 11 Ice Scrapers With Nearly Perfect Customer Reviews Here’s Why Light Snow Is Just as Dangerous as a Snowstorm
Roof sheeting, known as Hardies "Super Six" Roofs - most usually on industrial or farmyard buildings and domestic garages. Flat sheets for house walls and ceilings were usually 6 and 4.5 mm (0.24 and 0.18 in) thick, 900 and 1,200 mm (35 and 47 in) wide, and from 1,800 to 3,000 mm (71 to 118 in) long.
Bladder cancer makes up about 4% of cancers, most commonly affecting people 55 and older. While rates for bladder cancer are dropping, it’s still important to know what the most common signs of ...
Proton beam therapy has been shown to be just as effective as traditional chemotherapy, with fewer side effects and less treatment time.
The Mayo Clinic Cancer Center is one of the oldest NCI-designated cancer centers in the United States, having first been designated in 1973. [3] The main location of the Mayo Clinic is in Rochester, MN. Campuses in Arizona and Florida opened later and became part of the Mayo Clinic Cancer Center in 2003. [4] [5]