Ad
related to: calcium silicate structure
Search results
Results from the WOW.Com Content Network
Calcium-silicate passive fire protection board being clad around steel structure in order to achieve a fire-resistance rating. Calcium silicate is commonly used as a safe alternative to asbestos for high-temperature insulation materials. Industrial-grade piping and equipment insulation is often fabricated from calcium silicate.
It has a layered geometry with calcium silicate sheet structure separated by an interlayer space. The silicates in C-S-H exist as dimers, pentamers and 3n-1 chain units [ 9 ] [ 10 ] (where n is an integer greater than 0) and calcium ions are found to connect these chains making the three dimensional nano structure as observed by dynamic nuclear ...
Tobermorite is a calcium silicate hydrate mineral with chemical formula: Ca 5 Si 6 O 16 (OH) 2 ·4H 2 O or Ca 5 Si 6 (O,OH) 18 ·5H 2 O. . Two structural varieties are distinguished: tobermorite-11 Å and tobermorite-14 Å.
The structure of jennite is made of three distinct modules: ribbons of edge-sharing calcium octahedra, silicate chains of wollastonite-type running along the b axis, and additional calcium octahedra on inversion centers. The hydroxyl groups are bonded to three calcium cations while no SiOH groups are observed. [7]
Silicate perovskite is either (Mg,Fe)SiO 3 (the magnesium end-member is called bridgmanite [1]) or CaSiO 3 (calcium silicate known as davemaoite) when arranged in a perovskite structure. Silicate perovskites are not stable at Earth's surface, and mainly exist in the lower part of Earth's mantle , between about 670 and 2,700 km (420 and 1,680 mi ...
Tacharanite is a calcium aluminium silicate hydrate (C-A-S-H) mineral of general chemical formula Ca 12 Al 2 Si 18 O 33 (OH) 36 with some resemblance to the calcium silicate hydrate (C-S-H) mineral tobermorite. It is often found in mineral assemblage with zeolites and other hydrated calcium silicates.
Davemaoite is a high-pressure calcium silicate perovskite (CaSiO 3) mineral with a distinctive cubic crystal structure. It is named after geophysicist Ho-kwang (Dave) Mao, who pioneered in many discoveries in high-pressure geochemistry and geophysics. [2] [3]
This structure is also seen in the hexahydroxysilicate anion Si(OH) 2− 6 that occurs in thaumasite, a mineral found rarely in nature but sometimes observed among other calcium silicate hydrates artificially formed in cement and concrete structures submitted to a severe sulfate attack in argillaceous grounds containing oxidized pyrite. [2] [3 ...
Ad
related to: calcium silicate structure