• 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: Two Limiting Lines Technique to Obtain Minimum Paste Demand of Self-Consolidating Concrete

Author(s): Maciej Urban

Publication: Materials Journal

Volume: 116

Issue: 6

Appears on pages(s): 131-138

Keywords: minimum paste content; self-consolidating concrete (SCC) composition design; SCC; thickness of excess paste on aggregate grains

Date: 11/1/2019

Today, one of the most important challenges of self-consolidating concrete (SCC) technology is minimization of cement paste content. Unfortunately, there are no methods that include this important criterion. The author aimed to fill this gap by determining the relative thickness of excess paste on aggregate grains parameter (trel). This parameter is linearly correlated to minimal paste content needed to obtain a given SCC consistency level (Vpaste min). Two such lines were recognized: minimum paste demand line and minimum relative thickness of excess paste line. The main parameters influencing obtaining these lines are: sand to total aggregate ratio (s/a), void content in a loose state (νl), the coarsest fraction content, water-binder ratio (w/b), superplasticizer content, and aggregate fines content (or, alternatively, stone powder content). The proposed design procedure begins with assessment of both lines (using only four to six trial batches of extreme compositions in consideration). Next, the lines are used to predict the Vpaste min level by simple calculation of trel for a given SCC composition.


Please enter this 5 digit unlock code on the web page.