The Durability of Lightweight Geopolymer Concrete (LGC) on Chloride Resistance

Saloma, Saloma; Usman, Arie Putra; Hanafiah, Hanafiah; Ramadhanty, Cindy Violita

doi:10.13189/cea.2022.100514

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…The advantages of lightweight concrete and geopolymers can be combined in lightweight geopolymer mixtures [13]. Lightweight geopolymer composites offer multiple benefits, such as good fire resistance, heat insulation and sound absorption [14]. It is possible to use natural lightweight materials such as volcanic tuff, perlite and vermiculite or artificial lightweight aggregates in the production of lightweight concrete [15].…”

Section: Introductionmentioning

confidence: 99%

Properties of Basalt Fiber-reinforced Lightweight Geopolymer Mortars Produced with Expanded Glass Aggregate

Gültekin

2024

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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Geopolymers are new-generation construction materials that have attracted attention recently and can be an alternative to cement. In the production of these materials, aluminosilicate powder materials are used together with alkali or acid solutions. Geopolymers have different types of superiorities, such as rapid strength gain, high mechanical properties and good durability. This experimental study investigated the properties of expanded glass aggregate-bearing Class F fly ash-based lightweight geopolymer mortars. The fresh unit weight, water absorption capacity, compressive strength and high-temperature resistance (upon exposure to 900°C) of the mortars were determined. In addition, basalt fiber addition's effects on these properties were investigated. The inclusion ratios of basalt fiber were 0.1%, 0.2% and 0.4% by volume. The compressive strengths of fiber-free lightweight mixture and mixtures, including 0.1%, 0.2% and 0.4% basalt fiber, were found to be 8.2, 8.9, 9.0 and 8.0 MPa, respectively. The compressive strength of all lightweight mortars increased between 61.3% and 76.4% after the high-temperature effect. The results proved that it is possible to produce expanded glass aggregate-bearing lightweight geopolymer mortars with acceptable mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Properties of Basalt Fiber-reinforced Lightweight Geopolymer Mortars Produced with Expanded Glass Aggregate

Gültekin

2024

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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“…The durability of lightweight geopolymer concrete (LGC) has been studied in chloride resistance [10]. It was found that chloride affects the LGC significantly.…”

Section: Introductionmentioning

confidence: 99%

Characteristic of Polymeric Lightweight Aggregate with Coal Fly Ash and Epoxy Resin for Manufacturing the Lightweight Concrete

Firda¹,

Saggaff²,

Hanafiah³

et al. 2023

cea

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Concrete is an essential element and is widely used in various industrial construction works. However, concrete is weak in its specific gravity range of 2200 -2500 kg/m 3 . Using lightweight aggregates is one way to reduce the weight of concrete. In Indonesia, the availability of coal fly-ash (CFA) is easy to obtain and abundant, while the utilization rate is still low. To overcome this problem, CFA mixed with epoxy resin (ER) is used as a binder to manufacture polymer lightweight aggregates (PLA). The manufacturing process uses a simple mixing method using three different compositions. The ratio composition of coal fly-ash and epoxy resin proposed in this study are 90:10 (PLA_90:10), 80:20 (PLA_80:20), and 70:30 (PLA_70:30). From the results of testing the compressive strength and specific gravity of the three aggregate compositions, it was found that PLA_70:30 had a compressive strength of 74.60 MPa and a specific gravity of 1668 kg/m 3 at an aggregate age of 28 days. The aggregate microstructure is shown by scanning electron microscope (SEM) photo of each composition. The greater the composition of the epoxy resin on the lightweight polymer aggregate, the better the bond between the aggregate particles. The coal fly-ash is improperly bound and the aggregate becomes more fragile when there is less epoxy resin used. Furthermore, PLA_70:30 aggregate, which has become crushed aggregate, is inserted into a lightweight concrete mixture with a design quality of f'c = 17.5 MPa, following the requirements for lightweight concrete quality. The result is lightweight concrete with a compressive strength of 18.38 at 28 days, and specific gravity that varies between 1918.87 kg/m 3 -1928.93 kg/m 3 . According to the ASTM, the results of the compressive strength and specific gravity tests show that PLA_70:30 meets the standards specified as lightweight aggregates for lightweight structural concrete.

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“…Furthermore, the addition of polymers in lightweight materials can be used to improve their strength. Lightweight geopolymer materials have been applied extensively, such as lightweight geopolymer concrete [17], lightweight geopolymer mortar [18][19][20][21], and lightweight geopolymer soil [22]. The optimum heat conditions of 65 o C for 72 hours were proposed by Suksiripattanapong et al [22].…”

Section: Introductionmentioning

confidence: 99%

Unit Weight, Strengths and Thermal Conductivity of Cellular Lightweight Fly Ash Geopolymer Mortar Reinforced with Polyvinyl Alcohol

Tiyasangthong¹,

Yoosuk²,

Krosoongnern³

et al. 2022

cea

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Lightweight materials are the most popular building wall construction materials because of their fast installation, high insulation, and low cost. However, these materials use cement as a binder. Cement production releases carbon dioxide emissions resulting in environmental issues. The research investigated the use of fly ash geopolymer and polyvinyl alcohol (PVA) to enhance the mechanical and thermal properties of cellular lightweight mortar. The effects of PVA concentrations, foam content (Fc), and curing time on properties of the cellular lightweight fly ash geopolymer (CLFAG) mortar reinforced with PVA specimens were evaluated. The results revealed that the PVA concentrations and Fc had an effect on the unit weights of the CLFAG reinforced with PVA specimens. The lowest unit weight of the specimens was 10.10 kN/m 3 at a PVA concentration of 20% and Fc of 2%. According to the Thailand industrial standard for C12 and C14 CLC block types, all mixed ingredients met the unit weight and compressive strength requirements. The correlation between unit weight and thermal conductivity of CLFAG reinforced with PVA specimens was represented by a linear function, which was a useful equation for estimating the thermal conductivity of specimens.

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The Durability of Lightweight Geopolymer Concrete (LGC) on Chloride Resistance

Cited by 4 publications

References 4 publications

Properties of Basalt Fiber-reinforced Lightweight Geopolymer Mortars Produced with Expanded Glass Aggregate

Properties of Basalt Fiber-reinforced Lightweight Geopolymer Mortars Produced with Expanded Glass Aggregate

Characteristic of Polymeric Lightweight Aggregate with Coal Fly Ash and Epoxy Resin for Manufacturing the Lightweight Concrete

Unit Weight, Strengths and Thermal Conductivity of Cellular Lightweight Fly Ash Geopolymer Mortar Reinforced with Polyvinyl Alcohol

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