Fibre-reinforced cemented soils compressive and tensile strength assessment as a function of filament length

Festugato, Lucas; Menger, Estéfano da Silva; Benezra, Fernanda; Kipper, Eduardo; Consoli, Nilo César

doi:10.1016/j.geotexmem.2016.09.001

Cited by 131 publications

(54 citation statements)

References 15 publications

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“…The most popular applicable additives are bres, including polypropylene and polyethylene [1][2][3]. Other additives used are nano particles, glass, y ash, and silica fume [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Parameters Controlling Tensile Strength of Zeolite-Cemented Sands

Khajeh¹,

MolaAbasi

Semsani³

2017

Scientia Iranica

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Abstract. Treating soil with cement and zeolite is widely used in soil stabilization. This research intends to quantify the impact of cement and zeolite contents, porosity index, and voids/cement ratio on zeolite cemented sands by the splitting tensile strength (t) assessment. The approach of splitting tensile tests using specimens by di erent zeolite replacement percentages was followed. Results indicated that cement was replaced by zeolite at optimum proportion of 30%. Then, improved values of t by the e ect of zeolite and cement chemical properties in the cement sand specimens were attained. Zeolite can have a more signi cant e ect on a compacted mixture if its cement content and porosity increase. In this paper, it is shown that for the zeolite cemented sands, t increases by increase in cement content (C) and reduction in porosity (n); and a power function is welladapted to t both t C and t n. Afterwards, good correlations are obtained between voids/cement ratio (n=c) and the splitting tensile strength ( t ) of the sand-zeolite-cement studied. Finally, based on a number of input variables, namely, porosity (n), replacement of cement by zeolite (Z), and cement content (C), considering the regression approach, an equation is suggested to predict t. Moreover, it is shown that the evolved equation could successfully predict the tensile strength.

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“…The most popular applicable additives are bres, including polypropylene and polyethylene [1][2][3]. Other additives used are nano particles, glass, y ash, and silica fume [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Parameters Controlling Tensile Strength of Zeolite-Cemented Sands

Khajeh¹,

MolaAbasi

Semsani³

2017

Scientia Iranica

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“…e change of the fiber length is not considered in this study. According to [18], when the length of the fiber is 6 mm, not only the effect of the fiber is obvious but also the quality of the sample can be guaranteed. So, in this study, 6 mm PP fibers were selected.…”

Section: Testing Materialsmentioning

confidence: 99%

“…So, in this study, 6 mm PP fibers were selected. For 20% cement content, the fiber contents (mixing amounts of the fiber relative to the dry weight of slurry) were 0%, 0.25%, 0.5%, 0.75%, and 1%, respectively, according to [14][15][16][17][18].…”

Section: Testing Materialsmentioning

confidence: 99%

“…However, Consoli showed that the polypropylene fiber had a minimal effect on the mechanical performance of cemented soil with high cement content [17]. Festugato proposed a prediction model for unconfined compressive strength of cemented soil with low water content and took the fiber length into consideration [18]. Considering that construction waste slurry has high water content, large cement content is necessary for achieving expected strength [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Short‐Term Strength Properties of Fiber/Cement‐Modified Slurry

Jiang

Mao

et al. 2019

Advances in Civil Engineering

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e recycling of construction waste slurry is an urgent issue that needs to be solved in urban construction. To satisfy the requirements of subgrade filling, mechanical properties of fiber/cement-modified slurry were investigated. Unconfined compression tests were conducted for 7-day-cured specimens with a cement content of 5%, 10%, 15%, 20%, 25%, and 30%, respectively. Moreover, the effects of fiber contents (0.25%, 0.5%, 0.75%, and 1%, respectively) were also investigated for the specimens with a cement content of 20%. A formula satisfying the accuracy requirement was obtained by fitting the stress-strain curves using the back propagation (BP) neural network algorithm. Five parameters, including peak strength, failure strain, initial elastic modulus, residual strength, and energy dissipation, were used to characterize the short-term strength properties of fiber/cement-modified slurry. e analysis revealed that the cement content had a dominant effect on the short-term strength properties of fiber/cementmodified slurry, while the influence of fiber content was insignificant.

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“…However, their study covers a limited range of OPC percentage (only 2% and 4% OPC were studied). Silva dos Santos, Consoli, Heineck, & Coop (2009), Consoli, Bassani, & Festugato (2010), Fatahi & Khabbaz (2012), Hamidi & Hooresfand (2013), Olgun (2013), Chen, Shen, Arulrajah, Wu, Hou, & Xu (2015), Correia, Oliveira, & Custódio (2015), Cristelo, Cunha, Dias, Gomes, Miranda, & Araújo (2015), Yi, Ma, & Fourie (2015), Oliveira, Correia, Teles, & Custódio (2016), Ayeldeen & Kitazume (2017), and Festugato, Menger, Benezra, Kipper, & Consoli (2017) used binders for soil stabilization and fibres for the reinforcement purposes, and assessed compressive and tensile behaviour of studied materials. Yilmaz (2009), Jiang, Cai, & Liu (2010, Mirzababaei, Miraftab, Mohamed, & McMahon (2012), Plé & Lê (2012), Tang, Shi, Cui, Liu, & Gu (2012), Fu, Baudet, Madhusudhan, & Coop (2018, Vakili, Ghasemi, bin Selamat, Salimi, & Farhadi (2018), and Mirzababaei, Mohamed, Arulrajah, Horpibulsuk, & Anggraini (2018) applied different fibres to reinforce soil samples and studied the effect of different fibres on their behaviour.…”

Section: Introductionmentioning

confidence: 99%

Strength Characteristics of Cement-Rice Husk Ash Stabilised Sand-Clay Mixture Reinforced with Polypropylene Fibers

Ghorbani

Salimzadehshooiili

Medzvieckas

et al. 2018

BJRBE

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In this paper, stress-strain behaviour of sand-clay mixture stabilised with different cement and rice husk ash percentages, and reinforced with different polypropylene fibre lengths are evaluated. Mixtures are widely used in road construction for soil stabilisation. It is observed that replacing half of the cement percentage (in high cement contents) with rice husk ash will result in a higher unconfined compressive strength. In addition, the presence of 6 mm polypropylene fibres will help to increase the unconfined compressive strength of stabilised samples, while larger fibres cause reverse behaviour. In addition, introducing a new index for assessing the effect of curing days. Curing Improvement Index it is obtained that larger fibres show higher Curing Improvement Index values. Results gained for the THE BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING 2 0 1 8/ 1 3 (4) effects of curing days, and fibre lengths are further discussed and interpreted using Scanning Electron Microscopy photos. Based on the conducted Unconfined Compressive Strength, Indirect Tensile Strength, and Flexural Strength tests and using evolutionary polynomial regression modelling, some simple relations for prediction of unconfined compressive strength, indirect tensile strength, and flexural strength of cement-rice husk ash stabilised, and fibre reinforced samples are presented. High coefficients of determination of developed equations with experimental data show the accuracy of proposed relationships. Moreover, using a sensitivity analysis based on Cosine Amplitude Method, cement percentage and the length of polypropylene fibres used to reinforce the stabilised samples are respectively reported as the most and the least effective parameters on the unconfined compressive strength of specimens.

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Fibre-reinforced cemented soils compressive and tensile strength assessment as a function of filament length

Cited by 131 publications

References 15 publications

Parameters Controlling Tensile Strength of Zeolite-Cemented Sands

Parameters Controlling Tensile Strength of Zeolite-Cemented Sands

Characterization of Short‐Term Strength Properties of Fiber/Cement‐Modified Slurry

Strength Characteristics of Cement-Rice Husk Ash Stabilised Sand-Clay Mixture Reinforced with Polypropylene Fibers

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