Sustainability Levels in Comparison with Mechanical Properties and Durability of Pumice High-Performance Concrete

Hrabová, Kristýna; Lehner, Petr; Ghosh, Pratanu; Konečný, Petr; Teplý, Břetislav

doi:10.3390/app11114964

Cited by 21 publications

(21 citation statements)

References 43 publications

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“…The use of concrete is measured as the 2nd most consumed component after water, and today, construction of any structure is deemed impossible without the use of concrete [3][4][5][6][7][8][9][10]. Such a wide acceptance of concrete as a construction material is due to its durability, availability, and strength properties [1,11]. Moreover, nowadays, researchers are using different waste materials in concrete, which contributes a lot to a sustainable environment [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

et al. 2021

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The use of synthetic fiber and natural fiber for concrete production has been continuously investigated. Most of the materials have become popular for their higher flexibility, durability, and strength. However, the current study explores the engineering properties of cement concrete reinforced with nylon and jute fibers together. Varying proportions and lengths of nylon and jute fibers were utilized in the concrete mixture. Hence, the combined effects of nylon and jute fibers on workability, density, water absorption, compressive, tensile, flexural strength, and drying shrinkage of concrete were investigated. Results showed that concrete with 1% of nylon and jute fibers together by the volume fraction showed a maximum enhancement of the compressive strength, split tensile strength, and flexural strength by 11.71%, 14.10%, and 11.04%, respectively, compared to the control mix of concrete at 90 days. However, the water absorption of concrete increased with increasing nylon and jute fiber contents. The drying shrinkage of concrete decreased with the addition of nylon and jute fibers together after 90 days. Thus, the sparing application of both nylon and jute fiber as discussed in this study can be adopted for concrete production.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

et al. 2021

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“…Geopolymer is an inorganic polymer formed by mixing alumina (Al 2 O 3 ) with alkali liquids. Research on the use of fly ash, slag, silica fume, and metakaolin, as a source of aluminosilicate, has been increased [10]. Metakaolin (MK) is a natural source of alumina with some unique characteristics.…”

Section: Introductionmentioning

confidence: 99%

Effect of Size of Coarse Aggregate on Mechanical Properties of Metakaolin-Based Geopolymer Concrete and Ordinary Concrete

et al. 2021

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Geopolymer binders are a promising alternative to ordinary Portland cement (OPC) because they can significantly reduce CO2 emissions. However, to apply geopolymer in concrete, it is critical to understand the compatibility between the coarse aggregate and the geopolymer binder. Experimental studies were conducted to explore the effect of the size of the coarse aggregate on the mechanical properties and microstructure of a metakaolin-based geopolymer (MKGP) concrete and ordinary concrete. Three coarse aggregate size grades (5–10 mm, 10–16 mm, and 16–20 mm) were adopted to prepare the specimens. The microstructure of the concretes was investigated with scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS) and mercury intrusion porosimetry (MIP). Results showed an opposite coarse aggregate size effect between OPC and MKGP specimens in terms of compressive strength. SEM/EDS analysis indicated that the MKGP concrete has a weaker microstructure compared to OPC concrete induced by a higher porosity. The differences in mechanical properties and pore structure between the MKGP and OPC concrete are attributed to the greatly differing shrinkages triggered by the large surface area and penny-shaped particles of metakaolin. The findings in this work help tailor the mechanical properties and microstructure of MKGP concrete for future engineering applications.

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“…In the actual construction site, there is an urgent need for a method to promote economic efficiency and to reduce the construction duration for the improvement of the construction productivity, and it is continuously required to ensure the early strength of concrete. In addition, the demand for sustainability in consideration of the durability of concrete is continuously increasing, and research results are also being reported [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Improving Marine Concrete Performance Based on Multiple Criteria Using Early Portland Cement and Chemical Superplasticizer Admixture

Lee

Jeong

2021

Materials

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This study sought to examine the performance design of concrete mix proportions to ensure chloride resistance and early strength with respect to C35 (35 MPa), which is the minimum compressive strength class of concrete used in a marine environment. For the proposed concrete mixture, C24 (24 MPa) was selected and binders for concrete were manufactured using a blend of OPC (ordinary Portland cement), EPC (early Portland cement), and GGBS (ground granulated blast-furnace slag). The results of the experiment confirmed that the combined use of EPC and GGBS greatly improve the early-strength development and chloride resistance of concrete. An analysis revealed that the time for removal of forms can be reduced by 5–9 h from the aspect of early concrete strength. Moreover, in terms of construction productivity, EPC and GGBS were reduced by up to 16.39 h/cycle compared to other concretes. Regarding economic and environmental impacts, EPC and GGBS were more effective than C35 concrete. This study is significant as its findings help make it possible to examine the most economical concrete mix design in relation to strength development according to the application of EPC, GGBS, and PC-based admixtures.

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Sustainability Levels in Comparison with Mechanical Properties and Durability of Pumice High-Performance Concrete

Cited by 21 publications

References 43 publications

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

Experimental Study on Engineering Properties of Cement Concrete Reinforced with Nylon and Jute Fibers

Effect of Size of Coarse Aggregate on Mechanical Properties of Metakaolin-Based Geopolymer Concrete and Ordinary Concrete

Improving Marine Concrete Performance Based on Multiple Criteria Using Early Portland Cement and Chemical Superplasticizer Admixture

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