Experimental study on mechanical properties of fiber-reinforced and geopolymer-stabilized clay soil

Wang, Shengnian; Xue, Qinpei; Ma, Wei; Zhao, Kai; Wu, Zhijian

doi:10.1016/j.conbuildmat.2020.121914

Cited by 52 publications

(6 citation statements)

References 59 publications

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“…This is related to the presence of more defects in longer fibers, which are therefore likely to fail prematurely compared to the shorter fibers. Similarly, Wang et al [157] pointed out that long fibers are more likely to twine with each other and form agglomerates. These agglomerates occupy a particular space in composite, which causes an increase in voids and a weak fibergeopolymer interfacial bonding.…”

Section: • Effect Of Natural Fibers On the Mechanical Properties Of G...mentioning

confidence: 94%

“…Moreover, fiber content also influences the compressive strength of geopolymer composites as shown in Table 5. When the fiber content is low, the distribution of fiber may be difficult to perform the significant role of reinforcement, while, when the fiber content increases to an effective amount, the fibers will be uniformly dispersed in the matrix and enhance the compressive strength of geopolymer composites [157]. Therefore, increasing natural fiber content up to 1 wt% leads to an improvement in the compressive strength of plain geopolymer composites regardless of fiber type [152,153,158].…”

Section: • Effect Of Natural Fibers On the Mechanical Properties Of G...mentioning

confidence: 99%

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Geopolymer composites reinforced with natural Fibers: A review of recent advances in processing and properties

TANANE,

Moujoud,

Ousaleh

et al. 2024

Preprint

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The construction sector is a significant contributor to global greenhouse gas emissions, resource depletion, and environmental degradation. Therefore, sustainable development in the construction sector is essential to reduce its environmental impact. Geopolymer materials have attracted particular attention offering technical properties similar to those of Portland cementitious materials with a much lower CO 2 emission and lower environmental impact. Their use as clean insulating materials seems promising due to their excellent thermal and mechanical properties. Moreover, natural fibers, such as bamboo, flax, hemp, and jute, can be used as reinforcement within the geopolymer matrix, providing additional benefits such as improved tensile and flexural strength, reduced density, and improved thermal and acoustic insulation properties. Hence, this review paper aims to explore the raw materials and manufacturing conditions involved in the formation of compact and porous geopolymer materials. In addition, the various factors affecting the properties of geopolymer materials are critically discussed and compared with those of Portland cementitious materials. Moreover, the impact of many variables, including fiber size, fiber orientation, and fiber content on the performance of natural fiber-reinforced geopolymer composites are highlighted, providing insights for future research developments.

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Section: • Effect Of Natural Fibers On the Mechanical Properties Of G...mentioning

confidence: 94%

Section: • Effect Of Natural Fibers On the Mechanical Properties Of G...mentioning

confidence: 99%

Geopolymer composites reinforced with natural Fibers: A review of recent advances in processing and properties

TANANE,

Moujoud,

Ousaleh

et al. 2024

Preprint

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“…Wang vd. [26], %6 oranında kireç ve sodyum-silikat ve %0.4 oranında 12 mm uzunluğundaki BF ile takviye ettikleri zeminde maksimum dayanımı elde ettiklerini, Gisymol ve Ramya [27] ise 10 mm boyunda BF'nin organik zeminde %0.05 oranında kullanılması ve 28 gün kür uygulanmasıyla dayanımda maksimum artışın meydana geldiğini ifade etmiştir.…”

Section: Ndepete Ve Sertunclassified

Zemin güçlendirmede maksimum dayanım için optimum bazalt fiber oranının belirlenmesi

ASLAN TOPÇUOĞLU,

GÜROCAK

2023

DÜMF MD

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Düşük dayanımlı killeri stabilize etmek amacıyla sönmüş kireç, uçucu kül, silis dumanı, tüf, mermer tozu gibi katkı malzemelerinin kullanımı oldukça eski ve geleneksel bir uygulamadır. Ancak yeni teknolojik ürünlerin ortaya çıkışıyla birlikte bu geleneksel stabilizasyon yöntemleri yerini özellikle yapay fiber gibi ürünlerle yapılan güçlendirme yöntemlerine bırakmaya başlamıştır. Zemin iyileştirmede kullanılan, çevre dostu, doğal, doğada bol miktarda bulunan bu malzemelerden biri de bazalt fiberdir ve kullanımları gün geçtikçe yaygınlaşmaktadır. Zemin güçlendirmede bazalt fiber kullanımının başarısı kullanılan bazalt fiberin boyutu ve oranı ile ilgilidir ve yapılan bilimsel çalışmalar bu konularda yoğunlaşmıştır. Bu çalışmanın amacı, bazalt fiber ile güçlendirilen yüksek plastisiteli bentonit kilinde bazalt fiber oranının dayanıma olan etkilerinin incelenmesidir. Bu amaçla bir dizi deneysel çalışma gerçekleştirilmiştir. 6 mm uzunluğundaki bazalt fiberlerin kile farklı oranlarda eklenmesi ve optimum su içeriğinde sıkıştırılmasıyla hazırlanan silindirik örneklerde serbest basınç deneyleri gerçekleştirilmiş ve zeminin dayanımında meydana gelen değişimler belirlenmiştir. Çalışmanın sonuçları, 6 mm uzunluğundaki bazalt fiber ile güçlendirilen bentonit kilinde maksimum dayanımın %4 bazalt fiber oranında elde edildiğini, bu orandan daha yüksek bazalt fiber oranlarında ise dayanımda azalmalar oluştuğunu göstermiştir.

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“…The addition of fibers in a geopolymer matrix can reduce the propagation of microcracks. A study by Wang et al [115] explains the mechanism between the fibers and the matrix and implies that the fibers act as a bridge to sustain and transfer energy absorbed by the matrix. The interfacial bond between the surface of the fiber and the matrix contributes mainly to the branching effect and crack deflection that will prevent crack localization along a path.…”

Section: Fiber-reinforced Geopolymers (Frg) Used As Unreinforced Maso...mentioning

confidence: 99%

Geopolymers as Sustainable Material for Strengthening and Restoring Unreinforced Masonry Structures: A Review

et al. 2021

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Unreinforced masonry (URM) structures are vulnerable to earthquakes; thus, materials and techniques for their strengthening and restoration should be developed. However, the materials used in some of the existing retrofitting technologies for URM and the waste produced at its end-of-life are unsustainable. The production of ordinary Portland cement (OPC) worldwide has enormously contributed to the global carbon footprint, resulting in persistent environmental problems. Replacing OPC with geopolymers, which are more sustainable and environmentally friendly, presents a potential solution to these problems. Geopolymers can replace the OPC component in engineering cementitious composites (ECC), recommended to strengthen and restore URM structures. In the present paper, the state-of-the-art knowledge development on applying geopolymers in URM structures is discussed. The discussion is focused on geopolymers and their components, material characterization, geopolymers as a strengthening and restoration material, and fiber-reinforced geopolymers and their application to URM structures. Based on this review, it was found that the mechanical properties of geopolymers are on par with that of OPC; however, there are few studies on the mentioned applications of geopolymers. The characterization of geopolymers’ mechanical and physical properties as a restoration material for URM structures is still limited. Therefore, other properties such as chemical interaction with the substrate, workability, thixotropic behavior, and aesthetic features of geopolymers need to be investigated for its wide application. The application method of geopolymer-based ECC as a strengthening material for a URM structure is by grouting injection. It is also worth recommending that other application techniques such as deep repointing, jacketing, and cement-plastering be explored.

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Experimental study on mechanical properties of fiber-reinforced and geopolymer-stabilized clay soil

Cited by 52 publications

References 59 publications

Geopolymer composites reinforced with natural Fibers: A review of recent advances in processing and properties

Geopolymer composites reinforced with natural Fibers: A review of recent advances in processing and properties

Zemin güçlendirmede maksimum dayanım için optimum bazalt fiber oranının belirlenmesi

Geopolymers as Sustainable Material for Strengthening and Restoring Unreinforced Masonry Structures: A Review

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