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: Economic Mix Design Ultra High-Strength Concrete
Author(s): K. Holschemacher and D. Weiße
Publication: Special Publication
Appears on pages(s): 1133-1144
Keywords: compressive strength; crushed aggregates; fly ash; mix design; silica fume; tensile strength; ultra high-strength concrete (UHSC); workability
Abstract:Ultra high strength concrete (UHSC) is undoubtedly an engineered high-tech material, which can be seen as the latest step in the concrete technology development. It is characterized by extraordinary mechanical properties, e.g. high compressive and tensile strength as well as large elastic modulus. For the development of ultra high strength concrete the compressive strength was the relevant factor, therefore suitable mixes normally contain large quantities of cement and silica fume (³ 700 kg/m³), special aggregates and chemical admixtures. Consequently the material costs of this concrete type are very high. The aim of this investigation was to develop different UHSC-mixes in order to minimize the material costs. Furthermore, normal mixing and compacting intervals were used, so that the concrete can be easily handled on site, including pumpability. This paper outlines an experimental program and its results for the development of economic mixes for UHSC. Altogether 69 different mixes were tested on the fresh and hardened properties. Especially the cement type has a significant influence on the workability and the ultimate strength. It could also be shown that a strength of 150 N/mm² can be reached with a maximum cement content of 500 kg/m³.
Click here to become an online Journal subscriber