Challenges and opportunities for assessing transport properties of high-performance concrete

Kai Yang,Muhammed Basheer,Sreejith Nanukuttan,W John Mccarter,Adrian Long

doi:10.21041/ra.v8i3.301

Abstract

In this paper, a review of techniques is given so that both, the challenges and opportunities for assessing transport properties of high-performance concrete, are highlighted. A knowledge of performance of structural concrete is required for design and compliance purposes. One driving force for the use of high performance concretes (HPC) is enhanced durability yet it would be wrong to assume that all HPCs can deliver the desired performance level. In situ characterisation of the permeation properties of concrete is the most viable means for assessing durability and has become increasingly important over the past 20 years. A variety of methods exist that provide a range of parameters, e.g. air permeability, water absorption rate, sorptivity and chloride migration coefficient.

Highlights

INTRODUCTIONIn the design of concrete structures, durability and service life prediction have increasingly gained importance in recent years
In the design of concrete structures, durability and service life prediction have increasingly gained importance in recent years. This is due to inadequate durability performance of many reinforced concrete structures built in the past few decades, which places considerable strain on construction budgets
With performance levels of high-performance concrete (HPC) typically assessed on laboratory-based testing, the long-term, in-service performance of concrete structures is largely dependent on factors such as construction quality

Summary

INTRODUCTION

In the design of concrete structures, durability and service life prediction have increasingly gained importance in recent years This is due to inadequate durability performance of many reinforced concrete structures built in the past few decades, which places considerable strain on construction budgets. With performance levels of HPC typically assessed on laboratory-based testing, the long-term, in-service performance of concrete structures is largely dependent on factors such as construction quality. Set against this background, the ability to undertake accurate, in situ quality assessment of HPC is critical. The scope of the test methods reviewed is confined to direct permeation methods

TECHNIQUES FOR TESTING AND MONITORING PERFORMANCE OF CONCRETE STRUCTURES

Findings

CONCLUSIONS