In today’s market, it is imperative to be knowledgeable and have an edge over the competition. ACI members have it…they are engaged, informed, and stay up to date by taking advantage of benefits that ACI membership provides them.
Read more about membership
Become an ACI Member
Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
American Concrete Institute
38800 Country Club Dr.
Farmington Hills, MI
Feedback via Email
Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Restrained Shrinkage Testing of High-Performance Concrete Modified with Structural Lightweight Aggregate
Author(s): D. Cusson, T. Hoogeveen, and L. Mitchell
Publication: Special Publication
Appears on pages(s): 1353-1372
Keywords: autogenous shrinkage; high-performance concrete; high-strength concrete; internal drying; restained shrinkage; self-desiccation; tensile creep; thermal shrinkage
Abstract:A comprehensive research program at the National Research Council Canada is underway to develop low-shrinkage high-performance concrete for the design of cost-effective and sustainable concrete structures. This paper presents the structural laboratory testing of large prismatic high-performance concrete (HPC) specimens under restrained shrinkage and tensile creep. A systematic testing approach is presented, including a description of the theoretical background and the experimental apparatus used. The structural behaviour of two different HPC mix designs are compared and documented. The control concrete had a water-cement ratio of 0.34 and a cement-sand-aggregate ratio of 1:2:2. A slight variation of this mix design included 6% sand replacement by pre-soaked porous expanded shale lightweight aggregate. One of the objectives of this study is to determine whether the addition of this type of aggregate could effectively reduce autogenous shrinkage due to internal drying in HPC. Test results show that 6% sand replacement by pre-soaked porous lightweight aggregate reduces autogenous shrinkage moderately. This moderate shrinkage reduction was accompanied by a moderate increase in tensile creep. The results also reveal that most internal drying and autogenous shrinkage developed shortly after setting in both concrete mixes. This observation suggests that solutions to preventing autogenous shrinkage cracking in HPC will involve techniques that should be effective shortly after setting.
Click here to become an online Journal subscriber