Optimization of SCC mix at paste level by using numerical method based on a paste rheological threshold theory

Citation data:

Construction and Building Materials, ISSN: 0950-0618, Vol: 102, Page: 428-434

Publication Year:
Usage 13
Abstract Views 11
Link-outs 2
Citations 2
Citation Indexes 2
Ding Nie; Xuehui An
Elsevier BV
Engineering; Materials Science
article description
This paper presents a new numerical method to optimize the mix proportion of self-compacting concrete (SCC) at paste level based on a paste rheological threshold theory that the SCC formulated paste must satisfy the criteria to ensure SCC with good flowability and segregation resistance. A total of 12 mini-slump flow tests were initially conducted, and relevant rheological characteristics were derived. The correlation between mixture variables and rheological characteristics was determined using a bilinear interpolation method. A self-compacting area at paste level was defined by choosing the mixture whose rheological characteristics satisfied the criteria. The economical mixture was obtained from the area, and an iteration process was introduced to ensure that the rheological characteristics of this mixture satisfied the criteria. Finally, an optimized SCC mixture from an economical aspect was achieved, and the robustness of the mixture was also analyzed.