The chemical composition of a pozzolana will only pr... - Construction Cement and binders KnO 100062_Pozzolanas An introduction

Pozzolanas: An introduction

Practical Action

The chemical composition of a pozzolana will only provide a rough guide to its reactivity.

Chemical tests tend to indicate the presence of a pozzolanic reaction but not its magnitude.

The best way to determine the reactivity of a pozzolana is to measure the compressive

strength of a mortar cube made with a mixture of lime, sand and the pozzolana to be tested.

A simple test of this type is described in another leaflet in this series on testing and

performance standards of pozzolanas.

Reference and further reading

 Alternatives to Portland Cement Practical Action Technical Brief

 Additives to Clay: Organic additives derived from Natural Sources, Practical Action

Technical Brief

 Additives to Clay: Minerals and synthetic additives, Practical Action Technical Brief

 Mud Plasters and Renders: An introduction Practical Action Technical Brief,

 Clay as a binder Practical Action Technical Brief,

 How to Make Stabilised Soil Blocks, Technical Brief by Practical Action Southern

Africa

 *Earth construction, A comprehensive guide, CRATerre, Practical Action Publishing,

1994.

 Building with Earth, CRATerre, Mud Village Society, Delhi, India, 1990

 *Building with Earth, A handbook, 2nd Ed., J. Norton, Practical Action Publishing,

1997

 *Appropriate Building Materials, A Catalogue of Potential Solutions, R. Stulz, K.

Mukerji, Practical Action Publishing/SKAT, 1993

 Soil Preparation Equipment (product information), by Kiran Mukerji et al, GTZ,

Eschborn, Germany, 1991

 Earth Building Materials and Techniques, Select bibliography, CRATerre, GTZ,

Eschborn, Germany, 1991.

 The basics of compressed earth blocks, CRATerre,GTZ, Eschborn, Germany, 1991

 Stabilisers and Mortars (for stabilised soil blocks) product information, by Kiran

Mukerji, CRATerre, GTZ, 1994

 Compressed Earth Blocks: Vol. 1,Manual of Production, Vince Rigassi, CRATerre-

EAG, GTZ, 1995

 Earthen Architecture, Hands On Brief, Practical Action / TVE, Series 1,

 Rammed Earth Structures Keable & Keable Practical Action Publishing 2011

 Pozzolanas- an introduction Practical Action Technical Brief

 Testing methods for pozzolanas Practical Action Technical Brief

 The Chemistry of Cement and Concrete, F.M. Lea, Edward Arnold, London, 3rd Edn,

1970.

 Building Materials in Developing Countries, R.J.S. Spence, and D.J. Cook, John Wiley

& Sons, New York, 1983.

 Cement Replacement Materials. R.N. Swamy, R.N. (Ed.), Surrey University

Press/Blackie & Sons, 1986.

 Small-scale Production of Cementitious Materials, R.J.S. Spence, Practical Action

Publishing, 1980.

 Specification for Calcined Clay Pozzolana (2nd revision), Indian Standard IS 1344:

1981, Bureau of Indian Standards, New Delhi, India

 Pozzolanas - Calcined Clays & Shales, and Volcanic Ash Practical Action Technical

Brief

 The Development of CP40 Pozzolanic Cement in Cuba, Practical Action / CIDEM

Case Study

 Rice Husk Ash Cement: Progress in development and application , R. Smith,

Practical Action Publishing, 1984.

 Rice-Husk Ash Cements: Their development and applications, D. Cook, UNIDO,

Vienna, 1984