8

Measurement of porosity as a predictor of the transport properties of concrete

Abstract:

Fluid transport through concrete takes place almost entirely through the pores. The porosity is a measure of the total pore volume and does not take account of the connectivity or tortuosity of the pores, but it would still be expected to be a good predictor of transport. This chapter introduces different methods for measuring porosity and transport. The precise mechanism involved in a ‘vapour transport’ experiment is then discussed and relationships between porosity and transport are presented.

Key words

porosity; helium intrusion; mercury intrusion; oxygen permeability; vapour transport

8.1 Introduction

It is often easier and more reliable to measure the porosity ...

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