(OpenAccess)
F. Omidimoaf,
A. M. Rajabi,
H. S. Abdelgader,
M. Kurpińska,
K. Wilde
Volume 559: Issue 3
Pages 2-4
Accepted for publication: 21.02.2019 r.
Two-stage concrete (TSC) is a special type of concrete
that themethod of its construction and implementation is different
fromconventional one. In TSC, coarse aggregate particles are first
placed in the formwork and voids between themare subsequently
injected with a special cementations mixture. TSC has been
successfully used in many applications, such as underwater
construction, casting concrete sections congested with
reinforcement and concrete repair. Coarse aggregate forms about
60% of the total volume of TSC, while coarse aggregate forms
about 40% of the total volume of conventional concrete. In TSC
stresses are transferred through contact areas between coarse
aggregate particles. In this paper coarse aggregate size influence
on strength parameters of TSC and comparing it with
conventional concrete is done (by uniaxial compressive strength
test and Brazilian tensile strength test). According to results of
tests in this paper, the TSC with finest grain of coarse aggregate
has higher compressive and tensile strength, higher modulus of
elasticity and less Poisson’s ratio from conventional concrete.
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mgr inż. Farzam Omidimoaf, University of Qom, Department of Civil Engineering; Iran
prof. dr inż. Ali M. Rajabi, University of Tehran, School of Geology, Engineering Geology Department; Iran
prof. dr inż. Hakim S. Abdelgader, University of Tripoli; Department of Civil Engineering; Libya
dr. inż. Marzena Kurpińska, Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Poland
prof. dr hab. inż. Krzysztof Wilde, Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Poland
prof. dr inż. Hakim S. Abdelgader, University of Tripoli; Department of Civil Engineering; Libya
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