ABSTRACT

The test scheme was split into two stages. In stage one, the aim of the test was to determine the effects various additives have on the durability properties

1 INTRODUCTION

1.1 Background

Reinforced concrete bridge construction in New Zealand (NZ) became common after the 1950s. Due to the nature of design and construction practice during this period, many of the bridges now have insufficient cover concrete compared to the current New Zealand concrete code (NZS 2006) and many bridges now exhibit signs of reinforcement corrosion. To extend the service life of these deteriorated and damaged bridges, immediate remediation is necessary. This study investigated the effectiveness of sprayed Engineered Cementitious Composite as a cover concrete for repair work.