Also found in: Encyclopedia, Wikipedia.
Related to pozzolan: Pozzolan Cement, natural pozzolan


 (pŏt′sə-län′) also poz·zo·la·na (-sə-lä′nə) or poz·zuo·la·na (-swə-)
1. A siliceous volcanic ash used to produce hydraulic cement.
2. Any of various powdered substances that react with lime to form strengthening or enhancing compounds in cement.

[Italian pozzolana, after Pozzuoli.]

poz′zo·la′nic adj.
References in periodicals archive ?
Proposed limestone, pozzolan and associated minerals quarry project, Pinamungajan, Cebu (Century Peak Corp.
Cruz explained that his invention allows the blending of pozzolan and portland processes to come up with type 1B cement for general construction purposes.
Non-porous, spherical, non-aggregated and dispersed in water free from chlorides and low alkali, Tytro RC rheology control modifier functions as a pozzolan and silica fume alternative.
It has a plant in Cebu, founded in 1921, which produces Pozzolan and Portland cement under the APO Cement brand.
Frias et al, Thermal activation of a paper waste as pozzolan for the manufacture of cements.
How has business been for pozzolan in the Middle East during the past year?
One possible source for a pozzolan is calcined clay.
Four different culture substrates were tested namely: T1 reference substrate consists de 85% soil + 10% Grape marc Peat + 5%; the second substrate T2 is composed of 100% peat; 3rd Substrate T3 includes 50% peat + 50% soil and finally, the fourth substrate T4 consists of50% Peat + 50% Pozzolan.
ASTM C 618, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete.
34] ASTM C618, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, American Society for Testing and Materials, West Conshohocken, Pa, USA, 2003.
In present study, effects of a natural pozzolan, diatomite admixture on concrete workability characteristics, setting duration and behavior under axial loading were investigated and possible use of diatomite-blended concrete as a light-weight construction material in agricultural structures was evaluated.
High strength concrete containing natural pozzolan and silica fume, Cement and Concrete Composites 222: 399-406 http://dx.