An Innovative Approach to Concrete Mixture Proportioning

ABOUT THE 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.

International Concrete Abstracts Portal

  


Title: An Innovative Approach to Concrete Mixture Proportioning

Author(s): Xuhao Wang, Peter Taylor, Ezgi Yurdakul, and Xin Wang

Publication: Materials Journal

Volume: 115

Issue: 5

Appears on pages(s): 749-759

Keywords: aggregate system; mixture proportioning; optimization; paste quality; paste quantity; performance-based specifications; slipform pavement concrete

Date: 9/1/2018

Abstract:
Slipform paving is a road construction process where concrete is extruded by a paver that forms the stiff, fresh concrete into the desired slab shape. Slipform paving is especially suitable for time-sensitive projects requiring high productivity, as it allows placement of 65 to 100 m3 (85 to 130 yds) of concrete per hour. Mixture proportioning for slipform paving applications has often been based on recipes or previous mixtures rather than based on developing proportions for the specific needs of the project using local material. Therefore, a performance-based mixture proportioning approach is needed to balance the target performance requirements for workability, strength, durability, and cost effectiveness for a given project specification. The aim of this study was to develop an innovative performance based mixture proportioning method by analyzing the relationships between the selected mixture characteristics and their corresponding effects on concrete performance. The proposed method provides step-by-step instructions to guide the selection of required aggregate and paste systems based on the performance requirements of slipform pavements.