Review Kuat Tekan Beton Polos dari Perspektif Mekanika Fraktur

Danang Murdiyanto, Benedictus Sonny Yoedono, Agnes Hanna Patty

Abstract


Concrete is a discreet material that consist of aggregate as filler and cement paste (matrix) as binder. Both of them work together as a composite or monolithic mechanism, depends on the interface zone characteristic that developed by aggregate. Monolithic mechanism leading to failure catastrophically (brittle and instantly), while composite mechanism prevails failure occurs gradually. Monolithic mechanism maybe found in high strength concrete where hardness and stiffness of aggregate are compatible with their matrix. At the moment when the matrix tensile strength (ft) is reached. The cracks will propagate quickly cutting both aggregates and matrix, as well at once. Contrary to the composite condition, when the matrix tensile strength is reached, the aggregate will take over the load and the crack will propagate through the interface zone. The perspective of fracture mechanics and the failure parameters explain the mechanism of crack propagation based on the energy principles. This investigation reviews the phenomenon of concrete compressive strength with angular aggregates compared to rounded aggregates on cylindrical specimens with diameter (d) 15 cm and height (h) 30 cm of the same compressive strength.  The difference between them, shows the tendency of the influence of the interface zone as traction, which significantly contributes to the performance capacity before  collapse

Keywords


compressive strength;fracture mechanic;performance capacity

Full Text:

PDF

References


Shah, S.P, Swartz,S.E., Ouyang, C, “Fracture Mechanics of Concrete: Applications of Fracture Mechanics to Concrete, Rock, and Other Quasi-Brittle Materials”John Wiley and and Sons Inc.

ACI Committee 446-91.1989.”Fracture Mechanics of Concrete : Concepts, Models, and Determination of Material Properties,

Patty, A.H., 2004.“ Analisis Mekanika Fraktur Diimplementasikan Pada Beton Ringan Serat Baja Dengan Bukaan Tarik Tunggal,” Disertasi, ITB

Patty, A. H., Oesman, Mardiana. 2009. ”A Study on Reinforced Concrete Ductility Based on Open Tensile Mode Fracture Using Residual Strength Analysis”, International Conference on Sustainable Infrastructure and Built Environment in Developing Countries, ITB

Maji, A.K., and Shah, S.P. 1998. “Application of Acoustic Emission and Laser Holography to Study Microfracture in Concrete,” Nondestructive testing, ACI SP-112

Kabir, Ahsanul., Hasan, Monjurul., Miah, Khasro. 2012. “Predicting 28 Days Compressive Strength of Concrete from 7 Days Result”. Proc. of Int. Conf. on Advances in Design and Construction of Structures, ACEE

ASTM C 39/ C39M – 18 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens

Zain M.F.M., Suhad M.Abd, Hamid R and Jamil M. 2010, “Potential for Utilizing Concrete Mix Properties to Predict Strength at Different Ages”. Journal of Applied Science, Vol.10(22),pp 2831-2838

Mindess, Sidney., Young,Francis J. 1981. “Concrete”.Prentice-Hall Inc. Engelwood Cliffs, New Jersey

Neville, Adam.M. 1997. “Aggregate Bond and Modulus of Elasticity Concrete”. ACI Material Journal – Technical Paper. Tittle no 94-M9




DOI: http://dx.doi.org/10.33366/rekabuana.v3i2.1018

Article metrics

Abstract views : 84 | views : 87

Refbacks

  • There are currently no refbacks.


Copyright (c) 2018 Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License

View My Stats