WebAug 1, 2024 · The stalactites vary in composition and may be composed of limestone, lava, mud, sand, sinter, peat, etc. Here is a list of some of the most common types of stalactites: 5. Concrete Stalactite. Concrete stalactites. Often stalactites form on concrete or on plumbing when the water supply is laden with leaked minerals like calcium, magnesium, … WebSpeleothem. Cave labeled with the six most common types of speleothems: flowstone, columns, drapery, stalagmites, stalactites and straws. A speleothem ( / ˈspiːliəθɛm /; from Ancient Greek σπήλαιον (spḗlaion) 'cave', and θέμα (théma) 'deposit') is a geological formation by mineral deposits that accumulate over time in ...
Concrete degradation — Wikipedia Republished // WIKI 2
WebThe alkali–silica reaction (ASR), more commonly known as concrete cancer, is a deleterious 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.. This deleterious chemical reaction … Calthemite coralloids (also known as popcorn), can form on the underside of concrete structures and look very similar to those which occurs in caves. Coralloids can form by a number of different methods in caves, however on concrete the most common form is created when hyperalkaline solution … See more Calthemite is a secondary deposit, derived from concrete, lime, mortar or other calcareous material outside the cave environment. Calthemites grow on or under, man-made structures and mimic the shapes and … See more The growth rates of calthemite stalactite straws, stalagmites and flowstone etc., is very much dependent on the supply rate and continuity of the saturated leachate solution to the … See more Calcite rafts were first observed by Allison in 1923 on solution drops attached to concrete derived straw stalactites, and later by Ver Steeg. When the drip rate is ≥5 minutes … See more Calthemite rimstone or gours can form beneath concrete structures on a floor with a gradual sloping surface or on the side of rounded … See more Degrading concrete has been the focus of many studies and the most obvious sign is calcium-rich leachate seeping from a concrete structure. Calthemite stalactites can form on concrete structures and "artificial caves" lined with concrete … See more The way stalactites form on concrete is due to different chemistry than those that form naturally in limestone caves and is the result of the presence of calcium oxide (CaO) in cement. Concrete is made from aggregate, sand and cement. When water is added to the mix, … See more If the drip rate is quicker than one drop per minute, most of the CaCO3 will be carried to the ground, still in solution. The leachate solution … See more how much of the sat is math
Category:Concrete - Wikipedia
WebCalthemite structures develop as calcareous crusts that follow cracks along the underside of concrete structures, resulting from precipitation from water seepage having chemistry altered by partially dissolved concrete. Soda ... underside of a concrete ceiling; (2) ellipsoidal to oval or round basin-form on the ceiling crust, WebMar 2, 2024 · Calthemite is a secondary deposit, derived from concrete, lime, mortar or other calcareous material outside thecaveenvironment. Calthemites grow on or under, … WebMore bunkers in Sepänkylä, and more concrete-based cave forms. Read the full story from http://planetskier.blogspot.fi/2024/04/more-sepankyla-bunkers.html (B... how much of the senate must vote to impeach