Yahya Ghasemi Print III pdf

1.6. Appended papers
Paper 1
“Particle packing of aggregates for concrete mix design: Models and Methods.”
,
Ghasemi, 
Y.
, Johansson, N. (2014), Published in proceeding of the XXII Nordic Concrete Research 
symposium, Reykjavik, Iceland, Aug 13-15, 2014, pp. 109-112.
The paper deals with the concept of particle packing theory and explores different analytical 
models compiled as a tool to be used in a mix design model, namely Toufar model, CPM and 
4C.
Paper II
“Particle packing of aggregates for concrete mix design: Models vs. reality.”,
Ghasemi, Y
., 
Emborg, M. (2014), Published in Nordic Concrete Research, Vol. 51, No. 3, December 
2014,pp. 85-94.
In continuation of the previous paper, second paper examines the reliability of the particle 
packing models. Seven binary aggregate mixes were studied, the packing density for mixes 
were measured in the lab and is compared to the results obtained from the models.
Paper III
“Quantification of the shape of particles for calculating specific surface area of powders.”
Ghasemi, Y
., Emborg, M., Cwirzen, A., (2016), Published in proceeding of the international 
RILEM conference, MSSCE2016, Lyngby, Denmark, Aug 22-24, 2016, pp. 31-41.

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Introduction
The conference paper discusses the possibility of assigning platonic solids as the uniform 
shape of the particles instead of the traditional assumption of spherical shape which can 
increase the accuracy of size distribution curve based calculation of specific surface area.
Paper IV
“Estimation of Specific surface area of Powder particles Based on Size distribution Curve.”
Ghasemi, Y
., Emborg, M., Cwirzen, A., (2017), Submitted to the magazine of concrete 
research.
In paper IV, some lab results were presented, the specific surface area of particles were 
reported as Blaine value and were compared to the calculation based on the assumption of 
different platonic solids as the uniform shape of the particles.

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Aggregates in concrete