Mechanical Properties of Fly Ash-Based Geopolymer with Natural Fiber

Zulfiati, Ria; Saloma,; Idris, Yakni

doi:10.1088/1742-6596/1198/8/082021

Cited by 17 publications

(17 citation statements)

References 2 publications

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“…At the same time, the processing performance, dry density, ultrasonic pulse speed and compressive strength values all have a tendency to decrease. Zulfiat et al [ 65 ] conducted compressive strength tests on pineapple fibers with lengths of 10, 20 and 30 mm, and geopolymers with fiber weight percentages of 0, 0.25 and 0.50%, respectively. The composite with a fiber content of 0.50% and a fiber length of 30 mm had a compressive strength of 41.468 MPa and a maximum bending strength of 9.209 MPa.…”

Section: Research Status Of the Durability Of Cfgcsmentioning

confidence: 99%

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

Liu

2022

Molecules

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Geopolymers have high early strength, fast hardening speed and wide sources of raw materials, and have good durability properties such as high temperature resistance and corrosion resistance. On the other hand, there are abundant sources of plant or cellulose fibers, and it has the advantages of having a low cost, a light weight, strong adhesion and biodegradability. In this context, the geopolymer sector is considering cellulose fibers as a sustainable reinforcement for developing composites. Cellulosic-fiber-reinforced geopolymer composites have broad development prospects. This paper presents a review of the literature research on the durability of cellulosic-fiber-reinforced geopolymer composites in recent years. In this paper, the typical properties of cellulose fibers are summarized, and the polymerization mechanism of geopolymers is briefly discussed. The factors influencing the durability of cellulosic-fiber-reinforced geopolymer composites were summarized and analyzed, including the degradation of fibers in a geopolymer matrix, the toughness of fiber against matrix cracking, the acid resistance, and resistance to chloride ion penetration, high temperature resistance, etc. Finally, the influence of nanomaterials on the properties of geopolymer composites and the chemical modification of fibers are analyzed, and the research on cellulosic-fiber-reinforced geopolymer composites is summarized.

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Section: Research Status Of the Durability Of Cfgcsmentioning

confidence: 99%

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

Liu

2022

Molecules

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“…Pineapple-fiber-reinforced geopolymer concrete demonstrated an increase in compressive strength for different percentages of fiber regarding the weight of the air-plaster [ 10 , 91 ]. For conventional concrete, Abirami et al [ 92 ] noted an increase in compressive strength by up to 30.62% with the addition of 0.1% pineapple leaf fiber.…”

Section: Properties and Importance Of Use In Cementitious Materialsmentioning

confidence: 99%

“…Geopolymer composites of fly ash with pineapple fibers showed an improvement in compressive strength, reaching 41.5 MPa and a flexural strength of 9.2 MPa. The reference without fibers presented a compressive strength of 12 MPa and flexural strength of 6 MPa [ 10 ]; coconut fibers treated in alkaline medium increase its ductility associated with the reduction in lignin with this treatment [ 11 ]; although it was difficult to homogenize with cementitious composites, the addition of 10–15 mm long jute fibers contributes to an increase in compressive, flexural, and tensile strength when it was equally distributed [ 12 ]; palm nuts showed an improvement in flexural strength [ 3 ]; palm fibers reduced the appearance of cracks due to the modification of the surface fiber after treatment [ 13 ]; açai fibers reduced the density of the hardened mortar and increased the flexural strength provided by a great interface between fiber and cementitious composite [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

A Review of the Use of Natural Fibers in Cement Composites: Concepts, Applications and Brazilian History

Rocha¹,

Júnior²,

Marvila³

et al. 2022

Polymers

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The use of natural lignocellulosic fibers has become popular all over the world, as they are abundant, low-cost materials that favor a series of technological properties when used in cementitious composites. Due to its climate and geographic characteristics, Brazil has an abundant variety of natural fibers that have great potential for use in civil construction. The objective of this work is to present the main concepts about lignocellulosic fibers in cementitious composites, highlighting the innovation and advances in this topic in relation to countries such as Brazil, which has a worldwide prominence in the production of natural fibers. For this, some common characteristics of lignocellulosic fibers will be observed, such as their source, their proportion of natural polymers (biological structure of the fiber), their density and other mechanical characteristics. This information is compared with the mechanical characteristics of synthetic fibers to analyze the performance of composites reinforced with both types of fibers. Despite being inferior in tensile and flexural strength, composites made from vegetable fibers have an advantage in relation to their low density. The interface between the fiber and the composite matrix is what will define the final characteristics of the composite material. Due to this, different fibers (reinforcement materials) were analyzed in the literature in order to observe their characteristics in cementitious composites. Finally, the different surface treatments through which the fibers undergo will determine the fiber–matrix interface and the final characteristics of the cementitious composite.

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“…Natural fibers in the form of pineapple leaf fibers soaked in NaOH solution and cut to lengths between 10-30 mm were used for increasing the mechanical strength of geopolymer concrete composed of fly ash (27.5 %), fine aggregate (55 %), NaOH 14-16M (5.7 %), Na2SiO3 (11.4 %), and pineapple fibers (between 0.25-0.5 %). Under the conditions of using the NaOH concentration of 16M and the maximum proportion of natural fibers (0.5 %) with the length of 30 mm, the highest values of compressive strength (41.5 MPa) and flexural strength (9.2 MPa) were reached after the curing process of 28 days [6].…”

Section: Introductionmentioning

confidence: 98%

"Microsilica and steel dust as nano- and micro-particles addition for increasing the mechanical strength of fly ash and blast furnace slag-geopolymer concrete"

PĂUNESCU¹,

PĂUNESCU²,

VOLCEANOV³

2023

RRIC/RJCE

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The paper is a contribution to developing the manufacturing technique of fly ash and blast furnace slag-geopolymer concrete with compressive strength increased up to 73 MPa and flexural strength reaching 12.1 MPa (after 180 days of curing) by adding low amounts of nanosilica (20-50 nm) and steel dust (1-5 μm) captured from electric arc furnace exhaust gases. The originality of the work consists in combining the concrete production technique by using alumino-silicate industrial by-products (ash and slag) with the addition of nano or micro-particles in order to significantly increase the mechanical strength of geopolymer concrete.

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Mechanical Properties of Fly Ash-Based Geopolymer with Natural Fiber

Cited by 17 publications

References 2 publications

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

Durability of Cellulosic-Fiber-Reinforced Geopolymers: A Review

A Review of the Use of Natural Fibers in Cement Composites: Concepts, Applications and Brazilian History

"Microsilica and steel dust as nano- and micro-particles addition for increasing the mechanical strength of fly ash and blast furnace slag-geopolymer concrete"

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