pozzolan cement

Pozzolan interground with lime; a natural cement used in ancient times.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

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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.

Vicat: 15 years leading cement industry, development in Egypt

The cement used was Portland Pozzolan cement from local cement manufacturer.

Influence of Particle Size Distribution of High Calcium Fly Ash on HVFA Mortar Properties

[8,10] Studies have shown that it has favourable mechanical characteristics, biocompatibility, mineralization potential and odontogenic effects of the pozzolan cement. [8]

COMPARATIVE ASSESSMENT OF THE AREA OF SEALER VOIDS IN SINGLE-CONE OBTURATION DONE WITH ENDOSEAL MTA, AH PLUS AND PULPDENT SEALER

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.

The Compressive Strength and Resistivity toward Corrosion Attacks by Chloride Ion of Concrete Containing Type I Cement and Calcium Stearate

Ghorbani, "Chemical activation and set acceleration of lime-natural pozzolan cement," Ceramics--Silikaty, vol.

Chloride Ingress in Chemically Activated Calcined Clay-Based Cement

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.

PROPERTIES OF CONCRETE MODIFIED BY AMORPHOUS ALUMINA SILICATE

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].

Comparative analysis of selected physicochemical properties of Pozzolan Portland and MTA-based cements

ASTM WK42602, Test Method for Compressive Strength of Alkali Activated Coal Fly Ash and Raw or Calcined Natural Pozzolan Cement Mortars (Using 2-in.

ASTM C01 examines alkali activated binder versus natural pozzolan testing

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.

Holcim on track to achieve sustainability targets

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.

Clinker expansion by cement companies