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Fracture properties of geopolymer paste and concrete
Open accessAbstract
Geopolymers are an emerging type of cementitious material purported to provide an environmentally friendly alternative to Portland cement-based concrete. This paper reports the results of experimental research on fracture properties (fracture energy and brittleness) of fly ash based geopolymer concrete and paste with various mix parameters. The characteristic length of the geopolymer concrete was approximately three times less than that of ordinary Portland cement (OPC) concrete, due to an increase in tensile splitting strength of about 28%, a decrease in elastic modulus of about 22% and a decrease in fracture energy of about 24%. The difference in characteristic length is similar to that reported between high-strength and normal-strength OPC concretes, indicating that the geopolymer concrete exhibits higher brittleness than its OPC counterpart. This trend was found to be consistent between pastes and concretes, implying that the difference between geopolymer and OPC concrete is due to the type of matrix formation (geopolymerisation or hydration). For geopolymer concretes made with different mix parameters, fracture properties are closely correlated to their compressive strength.
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Cited by
Structural and material performance of geopolymer concrete: A review
Ma, C.-K., Awang, A. Z., & Omar, W. (2018) · Construction and Building Materials · doi:10.1016/j.conbuildmat.2018.07.111 · Cited by 528
Mechanical properties of alkali-activated concrete: A state-of-the-art review
Ding, Y., Dai, J.-G., & Shi, C.-J. (2016) · Construction and Building Materials · doi:10.1016/j.conbuildmat.2016.09.121 · Cited by 448
Multifunctional properties of carbon nanotube/fly ash geopolymeric nanocomposites
Saafi, M., Andrew, K., Tang, P. L., McGhon, D., Taylor, S., Rahman, M., Yang, S., & Zhou, X. (2013) · Construction and Building Materials · doi:10.1016/j.conbuildmat.2013.08.007 · Cited by 268
A review on concrete fracture energy and effective parameters
Khalilpour, S., BaniAsad, E., & Dehestani, M. (2019) · Cement and Concrete Research · doi:10.1016/j.cemconres.2019.03.013 · Cited by 253
Zhang, R., Zhou, S., Li, F., Bi, Y., & Zhu, X. (2022) · Journal of Materials in Civil Engineering · doi:10.1061/(asce)mt.1943-5533.0004025 · Cited by 29
Metadata
- Authors
- Pan, Z., Sanjayan, J. G., & Rangan, B. V.
- Venue
- Magazine of Concrete Research
- Publisher
- Emerald
- Published
- 2011-10
- Volume
- 63
- Issue
- 10
- Pages
- 763-771
- ISSN
- 0024-9831 (ISSN-L)
- 1751-763X
- OpenAlex
- W1879899466
- Cited by
- 352
- References
- 0
- FWCI
- 12.94
- Type
- journal article
- Language
- en
- Open access
- green
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- Pan, Z., Sanjayan, J. G., & Rangan, B. V. (2011). Fracture properties of geopolymer paste and concrete. Magazine of Concrete Research. https://doi.org/10.1680/macr.2011.63.10.763
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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