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Research Article: Tawashi & AlAmoudi 61

Research Article

Mathematical Modeling of the Self-Compacting Concrete Samples
SJSI Behavior Produced from the Syrian Raw Materials

Abstract

Authors: The main purpose of the research is to find a mathematical model
Ammar.Tawashi describing the behaviour of self-compacting concrete SCC produced from
Soleman Al-Amoudi local raw materials only by using mathematical analysis and experimental
test results. Three mixtures of SCC were produced: the mixtures with a
cement quantity of (550 kg/m3) had been shown satisfying results in the
fresh and hardened states and an increase in compression strength up to
Affiliation: (12%) and a decrease in the W/C ratio to (13%) compared to the
Department of reference samples. The stress-strain (σ,ε) curve was measured for them
Structural Engineering, and compared with the reference curves. The results showed incomplete
AL-Baath University- similarity and the convergence of the curves reaching up to (80%). The
Homs-Syria
closest curve that describes the case is the "POPOVICS" curve with its
Submitted 05 Feb 2023 ascending part and the European Code "EURO-CEB" curve with its
Accepted 31 Mar 2023 descending part. To avoid the presence of two completely different
Correspondence:
atawashi@albaath-univ.edu.sy mathematical equations describing the (σ,ε) curves for the SCC made of
local materials, a mathematical equation was derived that has one
general form, for the two parts of the ascending-descending curve. A
direct mathematical calculation and find (σ,ε) curve has been done which
accurately describes the behavior of the SCC whatever the quantity of
cement.
Keywords: Self-Compacting Concrete, Stress-Strain, Euro-CEB, Popovics,
Mathematical Formula.

List of Abbreviations
(SCC) Self-Compacting Concrete
(σ-ε) The Stress- Strain in Concrete
(SF) Slump Flow
(DJ) J-Ring Test
(VSI) Visual Stability Index
(SR) Segregation Test
(HRW) High Reduction Water
(W/C) Water/Cement Ratio

SJSI – 2023: VOLUME 1-1