Green high strength concrete containing recycled waste ceramic aggregates and waste carpet fibers: Mechanical, durability, and microstructural properties

Zareei, Seyed Alireza; Ameri, Farshad; Bahrami, Nasrollah; Shoaei, Parham; Musaeei, Hamid Reza; Nurian, Foad

doi:10.1016/j.jobe.2019.100914

Cited by 77 publications

(34 citation statements)

References 42 publications

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“…Fibre addition is thought to overcome some of these limitations due to their beneficial influence on the mechanical properties of hardened mortar, such as impact resistance, and splitting tensile and flexural strengths [ 3 , 4 , 5 , 6 , 7 ]. Additionally, the improvement of tensile strength, flexural toughness and energy absorption capacity due to fibre addition, as far as the mechanics of cracking propagation are concerned, have been confirmed in the case of the most popular cementitious material—concrete—in numerous experimental [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ] and numerical [ 23 , 24 , 25 , 26 , 27 ] investigations. The latest research programmes in that area are focused mostly on subjects concerning newly developed materials [ 8 , 10 , 20 ], the ecological impact of building materials [ 19 , 22 ] or less typical performance tests [ 18 , 21 ].…”

Section: Introductionmentioning

confidence: 89%

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

et al. 2021

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The results of flexural tests of basalt fibre-reinforced cementitious mortars in terms of flexural strength and the occurrence of the bridging effect are summarised. Mixture proportions and curing conditions were altered for various series. The main parameters concerning mixture proportions were water to cement ratio (w/c), micro-silica and plasticiser addition and fibre dosage (1%, 3% and 6.2% by binder’s mass). Various curing conditions were defined by different temperatures, humidity and time. The influence of the amount of water inside the pores of the hardened cementitious matrix on the flexural strength values, as far as the impact of the alkaline environment on basalt fibres’ performance is concerned, was underlined. The designation of flexural strength and the analysis of post-critical deformations were also performed on the reference series without fibres and with the addition of more common polypropylene fibres. The bridging effect was observed only for the basalt fibre-reinforced mortar specimens with a relatively low amount of cement and high w/c ratio, especially after a short time of hardening. For the lowest value of w/c ratio (equalling 0.5), the bridging effect did not occur, but flexural strength was higher than in the case of non-reinforced specimens. Comparing mortars with the addition of basalt and polypropylene fibres, the former demonstrated higher values of flexural strength (assuming the same percentage dosage by the mass of the binder). Nevertheless, the bridging effect in that case was obtained only for polypropylene fibres.

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Section: Introductionmentioning

confidence: 89%

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

et al. 2021

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“…The durability properties of concrete counting ceramic wastes were also investigated by several researchers. It found in the study of many authors [1,5,10,18] that there is no significant change in the basic trend of permeation characteristics of this recycled aggregate concrete when compared to the conventional concrete. Tabak et al [21] demonstrated a reduction of about 0.17% in water absorption of concrete made with recycled ceramic aggregate, when compared to conventional concrete.…”

Section: Introductionmentioning

confidence: 86%

“…Several studies have been done on the use of ceramic waste as coarse aggregate, powder and filler in the preparation of cement mortar [1][2][3][4][5][6], concrete [7][8][9][10][11][12][13] and self-compacting concretes [14][15][16], high strength concrete [17,18] and ultra-highperformance concrete [19,20]. Many of them, explored that the use of ceramic waste, as a material in concrete composite, leads to a decrease in workability and density of mixture [2,3].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Ceramic Wastes on Physical and Mechanical Properties of Eco-Friendly Flowable Sand Concrete

Guendouz¹,

Boukhelkhal²,

Bourdot³

et al. 2021

Advanced Ceramic Materials

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This work aims to study the valorization and recycling of ceramic wastes (wall tiles) as a fine aggregate instead of sand in the manufacturing of flowable sand concrete (FSC). For this, the sand is substituted with the ceramic wastes at different dosages (0, 5, 10, 15, 20, and 25% by volume of the sand). The influence of the ceramic wastes addition on the physical (workability, density) and mechanical (compressive, flexural and elastic modulus) properties of FSC was studied. The results show that the use of ceramic waste as partial replacement of sand contributes to reduce the workability, bulk density and improves the mechanical strengths of FSC according to the use of 25% of wall tiles waste.

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“…Several niche applications 31 such as railways sleepers, 32 wind concrete towers, 33 bridge decks, 34 strengthening of damaged members, 35‐37 and implementation as thin strips for flexural and shear strengthening of RC beams, beam–column joints , columns, and slabs 38‐40 . Although there have been several advancements in modeling structural responses of UHPC, theoretically, numerically, or empirically, 41‐43 there is wide research gap to relate the microstructural changes to structural responses. View of this several studies in the literature are currently focused on establishing a relation between structural behavior and microstructural events with the help of AE testing.…”

Section: Introductionmentioning

confidence: 99%

Smart monitoring of strengthened beams made of ultrahigh performance concrete using integrated and nonintegrated acoustic emission approach

Prem

Verma

Murthy

et al. 2021

Struct Control Health Monit

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Summary Ultrahigh performance concrete (UHPC) is one of the recent advancements in construction building materials and popularly used as a precast applications or strengthening material. The current paper attempts to improve understanding about fracture and failure mechanisms of UHPC application as a strengthening material using acoustic emission (AE) technique. The paper proposes an integrated and nonintegrated approach to relate the mechanical energy with AE energy for (i) undamaged reinforced concrete (RC) beams and (ii) damaged RC beams strengthened with UHPC. The integrated approach evaluates the damage mechanisms by evaluating sentry function (logarithmic ratio of mechanical and acoustic energy), while nonintegrated approach considers superimposition of flexure and AE response, load versus AE energy behavior and damage index. To validate the proposed approach, experiments are conducted on (i) control RC beams and (ii) RC beams strengthened with UHPC layers of t, 1.5t, and 2t thickness (where t = 10 mm). From the study, it is found that analysis of structures using both the approaches can overcome corresponding limitations. Hence, to completely characterize the damage, both methods are recommended.

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Green high strength concrete containing recycled waste ceramic aggregates and waste carpet fibers: Mechanical, durability, and microstructural properties

Cited by 77 publications

References 42 publications

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

Flexural Behaviour of Cementitious Mortars with the Addition of Basalt Fibres

The Effect of Ceramic Wastes on Physical and Mechanical Properties of Eco-Friendly Flowable Sand Concrete

Smart monitoring of strengthened beams made of ultrahigh performance concrete using integrated and nonintegrated acoustic emission approach

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