Bond-behavior study of newly developed bamboo-composite reinforcement in concrete

Javadian, Alireza; Wielopolski, Mateusz; Smith, Ian F. C.; Hebel, Dirk E.

doi:10.1016/j.conbuildmat.2016.06.084

Cited by 117 publications

(65 citation statements)

References 15 publications

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“…Khare recommended that an optimum of 4% longitudinal reinforcement should be utilized in the design of bamboo‐reinforced concrete structure, in order to maintain an appreciable ductile behavior before ultimate failure. Others 13‐17 have also stressed that inadequate bond strength deterioration or durability may be the defining metric in assessing the structural performance of bamboo.…”

Section: Introductionmentioning

confidence: 99%

Bamboo‐reinforced self‐compacting concrete beams for sustainable construction in rural areas

Adom-Asamoah

Osei

Obeng

et al. 2017

Structural Concrete

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The use of bamboo as longitudinal reinforcement, coupled with the application of self-compacted concrete (SCC) in the construction industry, may be a promising solution to issues involving sustainable development in developing countries. This study seeks to investigate the flexural performance of bamboo-reinforced SCC beams with adequate transverse reinforcement. The major design parameters were the shear span-to-depth ratio, the percentage of longitudinal reinforcement, and the maximum size of coarse aggregate. The load-deflection curves, serviceability and ultimate failure characteristics, cracking behavior, and ductility measures were evaluated and discussed among tested beams. Results indicated that their structural performance at service and ultimate failure would be adequate when a material reduction factor of three is used with BS 8110 design code. However, to achieve maximum ductility, the level of longitudinal reinforcement should be in range of 2.6-3.1%. Furthermore, an increase in the size of coarse aggregate will greatly impact the degree of ductility. K E Y W O R D S bamboo, ductility, flexure, RC beams, self-compacting concrete 1 | INTRODUCTIONThe ever-increasing urbanization that mainly emanates from rapid population growth, particularly in developing countries, has placed much pressure on the demand for building materials in the construction sector. Hence, to maintain a sustainable construction industry, several innovative studies have investigated the relative performance of alternative design methods and materials to conventional ideologies. [1][2][3][4] Javadian et al 5 noted that the contribution from developing countries to the overall demand on concrete as a building material is approximately 90%. Additionally, Hebel et al 6 established that developing countries also account for about 80% of the global demand of steel in the construction industry. However, most of such countries are unable to synthesize these materials, particularly cement and steel, and rely heavily on importation from others. Hence, alternative building materials, which are readily available, affordable, and able to exhibit adequate structural behavior under all forms of external loading, are greatly preferred.A suitable option will be to use bamboo as longitudinal reinforcement for concrete structures that are not subjected to severe loading conditions. Extensive researches 3,4,7-10 on the mechanical behavior of bamboo have revealed that it possesses a comparable tensile strength in relation to mild steel and, as such, can serve as a suitable replacement for steel. However, reliable quantification of its tensile strength is problematic as it is naturally occurring, therefore giving bamboo a wide variability in strength. Therefore, studies 3,4,11,12 on its performance have mainly aimed at finding the optimum percentage of reinforcement that gives a maximum level of ductility under loading. Khare 13 recommended that an optimum of 4% longitudinal reinforcement should be utilized in the design of bamboo-reinforced concrete st...

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Section: Introductionmentioning

confidence: 99%

Bamboo‐reinforced self‐compacting concrete beams for sustainable construction in rural areas

Adom-Asamoah

Osei

Obeng

et al. 2017

Structural Concrete

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“…This can lead to labour and energy intensive, and potentially expensive treatments that defeat the purpose of using an inexpensive and locally available material. For example, Javadian et al [37] report a maximum bond strength comparable to that of steel reinforcing bars, 3.65 MPa, for highly processed composite bamboo splints. To achieve this high bond stress, the splits were dried below 10% moisture content, heat-treated under pressure (to increase the density of bamboo) and coated using a water-based epoxy and fine sand.…”

Section: Bond and Developmentmentioning

confidence: 99%

“…Javadian et al [37] have proposed the use of a heattreated, densified engineered bamboo composite for concrete reinforcement. The resulting composite strips have a reported tensile strength of 295 MPa and a modulus of 37 GPa.…”

Section: Practical Uses Of Bamboo As Reinforcing Materialsmentioning

confidence: 99%

Bamboo reinforced concrete: a critical review

et al. 2018

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The use of small diameter whole-culm (bars) and/or split bamboo (a.k.a. splints or round strips) has often been proposed as an alternative to relatively expensive reinforcing steel in reinforced concrete. The motivation for such replacement is typically cost-bamboo is readily available in many tropical and sub-tropical locations, whereas steel reinforcement is relatively more expensive-and more recently, the drive to find more sustainable alternatives in the construction industry. This review addresses such 'bamboo-reinforced concrete' and assesses its structural and environmental performance as an alternative to steel reinforced concrete. A prototype three bay portal frame, that would not be uncommon in regions of the world where bambooreinforced concrete may be considered, is used to illustrate bamboo reinforced concrete design and as a basis for a life cycle assessment of the same. The authors conclude that, although bamboo is a material with extraordinary mechanical properties, its use in bamboo-reinforced concrete is an ill-considered concept, having significant durability, strength and stiffness issues, and does not meet the environmentally friendly credentials often attributed to it.

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“…It is then absorbed by the bamboo microstructure, which induces an expansion of the bamboo reinforcement and promotes internal local stress in the concrete surrounding the bamboo. Over a long period of time, the consequences are brittle splitting failure in concrete can result in sudden collapse [6].…”

Section: Bamboomentioning

confidence: 99%

Model of Bamboo Strip Notch Reinforced Concrete Beams On The Flexural Capacity

Budi

Rahmadi

2017

MATEC Web Conf.

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Abstract. There are many various species of bamboo trees in Indonesia, one of which is Petung bamboo (Dendrocalamus Asper). Bamboo is one of the potential material as a substitute for steel reinforcement. This paper will discuss the model of bamboo reinforcement to increase the flexural capacity of concrete beams. The use of the notch is expected to increase the bonding effects and minimize slip effects. This study used laboratory experimental method. Bamboo strips are processed and formed with the notches of the form V with the distance between the notch are 2, 3, 4, 5, 6 and 7 cm. Static loading is done with third point loading system (ASTM C78). The test results show that, the average flexural capacity on the specimens of concrete beams with Petung bamboo strip notch as reinforcement on the distance between notch 2, 3, 4, 5, 6 and 7 cm respectively are 0.536, 0.528, 0.432, 0.403, 0.424, 0.366 tm.

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Bond-behavior study of newly developed bamboo-composite reinforcement in concrete

Cited by 117 publications

References 15 publications

Bamboo‐reinforced self‐compacting concrete beams for sustainable construction in rural areas

Bamboo‐reinforced self‐compacting concrete beams for sustainable construction in rural areas

Bamboo reinforced concrete: a critical review

Model of Bamboo Strip Notch Reinforced Concrete Beams On The Flexural Capacity

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