The Effect of Basalt Fiber on Mechanical, Microstructural, and High-Temperature Properties of Fly Ash-Based and Basalt Powder Waste-Filled Sustainable Geopolymer Mortar

Ziada, Mahmoud; Erdem, Savaş; Tammam, Yosra; Kara, Serenay; Lezcano, Roberto Alonso González

doi:10.3390/su132212610

Cited by 24 publications

(5 citation statements)

References 43 publications

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“…Another common impact test is the Charpy pendulum test that is used to estimate the effect of impact forces on different sizes of elements that are made of different types of materials [ 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. On the other hand, projectile [ 33 , 34 , 35 , 36 , 37 ] and explosive impacts [ 38 , 39 ] are also types of impact forces that are investigated using special, very costly techniques. None of the mentioned tests consider repeated impact influence and none can be termed as simple or low-cost testing methods.…”

Section: Introductionmentioning

confidence: 99%

Repeated Impact Response of Normal- and High-Strength Concrete Subjected to Temperatures up to 600 °C

et al. 2022

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With the aim of investigating the response of concrete to the dual effect of accidental fire high temperatures and possible induced impacts due to falling fragmented or burst parts or objects, an experimental work is conducted in this study to explore the influence of exposure to temperatures of 200, 400 and 600 °C on the responses of concrete specimens subjected to impact loads. Cylindrical specimens are tested using the recommended repeated impact procedure of the ACI 544-2R test. Three concrete mixtures with concrete nominal design strengths of 20, 40 and 80 MPa are introduced to represent different levels of concrete strength. From each concrete mixture, 24 cylinders and 12 cubes are prepared to evaluate the residual impact resistance and compressive strength. Six cylindrical specimens and three cubes from each concrete mixture are heated to each of the three levels of high temperatures, while the other six cylinders and three cubes are tested without heating as reference specimens. The test results show that the behavior of impact resistance is completely different from that of compressive strength after exposure to high temperatures; the cylindrical specimens lose more than 80% of the cracking and failure impact resistance after exposure to 200 °C, while impact resistance almost vanishes after exposure to 400 and 600 °C. Concrete compressive strength is found to be effective on the unheated impact specimens, where the higher-strength cylinders retain significantly higher impact numbers. This effect noticeably decreases after exposure to 200 and 400 °C, and vanishes after exposure to 600 °C.

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Section: Introductionmentioning

confidence: 99%

Repeated Impact Response of Normal- and High-Strength Concrete Subjected to Temperatures up to 600 °C

et al. 2022

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“…Wastes generated as a by-product/waste product as a result of technical processes in different industries pose a significant environmental risk. 73 Many countries have legal regulations that include the management of waste as well as its storage as a last resort. The cost of storing waste materials increases year after year.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and durability properties of alkali-activated slag/waste basalt powder mixtures

Dener

2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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There are several studies investigating the feasibility of basalt powder as a precursor in alkali-activated cement production. The originality of this research lies in investigating the mechanical and durability features of alkali-activated mortars manufactured by partially substituting granulated blast furnace slag (GBFS) with waste basalt powder (WBP). In this study, 20% of GBFS was replaced with WBP, and high temperature (300 °C, 600 °C, and 900 °C) and magnesium sulfate (5% concentration) resistance of the manufactured mortars were investigated. The deteriorations of the mortars subjected to high temperature and magnesium sulfate were examined by compressive strength test, ultrasonic pulse velocity test, scanning electron microscopy analysis, and Fourier transform infrared spectroscopy analysis. The compressive strength of the mortar produced with 20% WBP substitution was 9.9% lower compared to the mortar containing 100% GBFS as the precursor. However, the performance of alkali-activated slag (AAS), known for its good resistance to high temperatures, did not decrease with the WBP substitution. The reduction in strength of both mortars after 900 °C was approximately 86%. No excessive changes were observed in the visual appearance and the compressive strength of the mortars after 3 months of exposure to magnesium sulfate. Microstructure analyses also revealed that WBP substitution had a limited effect on the high temperature and sulfate resistance of AAS.

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“…The most famous of these tests is the instrumented drop-weight test, which is usually used to estimate the impact strength of full-scale structural elements [12][13][14][15]. Explosive tests [16,17] and projectile tests [18,19] are other types of impact tests that are mostly used for the evaluation of the resistance of military or protective structural elements to such kinds of impact loads. All of the previous three types of impact tests are very costly and are not easy to perform, where sophisticated sensors and testing setups are essential.…”

Section: Introductionmentioning

confidence: 99%

Recent Literature on Steel Fiber Role in Resistance Improvement of Fibrous Concrete to Repeated Impacts

Özakça

Al-Ameri²,

Karataş³

et al. 2023

ejuow

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Concrete is a brittle material when subjected to design and accidental impact loads, which are expected along the life span of the structure. To improve the impact performance of concrete, steel fibers are used as short discrete material reinforcing elements. Among the available impact test, the ACI 544-2R repeated impact test is considered as the simplest and cheapest test procedure that needs no sophisticated sensors and costly techniques, which is used as a qualitative tool to evaluate the impact of fibrous concrete. This article introduces a state-of-the-art literature review of the repeated impact performance of steel fiber-reinforced concrete. Rich literature of different steel fiber-reinforced concrete types is reviewed and the effect of steel fibers on the retained cracking and failure impact numbers is highlighted. The sole effects of the geometrical parameters of steel fibers were analyzed in addition to fiber content. Based on the reviewed literature works, it can be summarized that increasing the fiber content increases the bond strength, and using longer fibers affords deeper anchorage lengths inside the cement paste across cracks, which postpone their widening and improves the impact resistance in terms of recorded cracking and failure numbers.

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The Effect of Basalt Fiber on Mechanical, Microstructural, and High-Temperature Properties of Fly Ash-Based and Basalt Powder Waste-Filled Sustainable Geopolymer Mortar

Cited by 24 publications

References 43 publications

Repeated Impact Response of Normal- and High-Strength Concrete Subjected to Temperatures up to 600 °C

Repeated Impact Response of Normal- and High-Strength Concrete Subjected to Temperatures up to 600 °C

Mechanical and durability properties of alkali-activated slag/waste basalt powder mixtures

Recent Literature on Steel Fiber Role in Resistance Improvement of Fibrous Concrete to Repeated Impacts

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