Pozzolan Cement

Pozzolan Cement

 

a general name for a group of cements containing not less than 20 percent active mineral additives. The term “pozzolan cement” is derived from the name of a friable volcanic rock—pozzolana—used in ancient Rome as an additive to lime in the production of hydraulic cement.

In modern construction, the major type of pozzolan cement is portland-pozzolan cement, produced by grinding together portland cement clinker (60–80 percent), an active mineral additive (20–40 percent), and a small amount of gypsum. It differs from ordinary portland cement in its higher resistance to corrosion (especially in soft or sulfate waters), reduced rate of hardening, and lower frost resistance. Pozzolan cement is used mainly to produce concretes used in underwater and underground structures.

pozzolan cement

Pozzolan interground with lime; a natural cement used in ancient times.
References in periodicals archive ?
This includes Portland cement, Portland composite, Blast furnace cement, Slag cement, and Pozzolan cement, as well as various types of concrete.
The cement used was Portland Pozzolan cement from local cement manufacturer.
[8,10] Studies have shown that it has favourable mechanical characteristics, biocompatibility, mineralization potential and odontogenic effects of the pozzolan cement. [8]
The type of cement utilized was a Portland pozzolan cement. The water was from a deep well near to the Laboratory of Civil Engineering, Jenderal Soedirman University, Purbalingga, Indonesia.
Ghorbani, "Chemical activation and set acceleration of lime-natural pozzolan cement," Ceramics--Silikaty, vol.
Main innovations are related to: the creation of pozzolan cement made with CDW and/or construction waste precursors (15% weight of the tile); the substitution of aggregates with recycled glass (around.
Utilization of natural zeolite in Portland pozzolan cement of increased sulphate resistance, in Proceedings of 5th CANMET/ACI Conference on Durability of Concrete, 4-9 June 2000, Barcelona, Spain, 223-238.
Recently, a more rapidly setting MTA-based cement was developed using small particles of pozzolan cement without chemical accelerators that presented biocompatibility and osteogenicity properties similar to those of ProRoot MTA [21, 22].
ASTM WK42602, Test Method for Compressive Strength of Alkali Activated Coal Fly Ash and Raw or Calcined Natural Pozzolan Cement Mortars (Using 2-in.
Cement types produced by Holcim In 2011 GRI EN3 Slag cement 10% Pozzolan cement 8% Fly ash cement 25% Limestone cement 15% Multiple blend cement 14% Masonry cement, oilwell cement, white cement, special binder 5% Ordinary Portland Cement 23% * All but Ordinary Portland Cement are composite cements.
Portland Resistant to sulfate For two-three floor Pozzolan Cement and moderate hydration buildings, general heat concrete construction , mass concrete construction like full plate foundation and dams, building construction in coastal areas swampy area and buildings on ground containing aggressive sulfuric salt and building construction needing high water tightness such as sanitation construction, water construction and water pools or reservoirs.