Impact of thermally modified wood on mechanical properties of mortar

Guo, Aofei; Aamiri, Osama Bu; Satyavolu, Jagannadh; Sun, Zhihui

doi:10.1016/j.conbuildmat.2019.03.016

Cited by 19 publications

(14 citation statements)

References 35 publications

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“…This was evident from the split tensile, modulus of rupture and elasticity results in which both had better performance than the hot water treated fibre reinforced cement composite samples. A similar statement was made by [50] that good adhesion between fibers and matrix produce high strength brittle material likewise a reversal is the case if a poor bonding is sighted at the interface. Numerous cracks were also found on the surface of Fig.…”

Section: Scanning Electron Microscope (Sem)supporting

confidence: 59%

Effect of microwave assisted alkali pretreatment and other pretreatment methods on some properties of bamboo fibre reinforced cement composites

Akinyemi

Omoniyi

Onuzulike

2020

Construction and Building Materials

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Section: Scanning Electron Microscope (Sem)supporting

confidence: 59%

Effect of microwave assisted alkali pretreatment and other pretreatment methods on some properties of bamboo fibre reinforced cement composites

Akinyemi

Omoniyi

Onuzulike

2020

Construction and Building Materials

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“…6 The mechanical properties of cementitious materials with lignocellulosic aggregates are shown in Table 3. Many researchers suggested that the addition of lignocellulosic aggregates as lightweight aggregates normally reduced the mechanical properties of cementitious materials [18,60,62,63]. Guo et al incorporated wood chips into mortars to partially replace 5% and 10% sand and then suggested that wood chips could reduce the flexural and compressive strengths of mortars significantly while increasing their toughness [60].…”

Section: Serving As Aggregatesmentioning

confidence: 99%

“…Many researchers suggested that the addition of lignocellulosic aggregates as lightweight aggregates normally reduced the mechanical properties of cementitious materials [18,60,62,63]. Guo et al incorporated wood chips into mortars to partially replace 5% and 10% sand and then suggested that wood chips could reduce the flexural and compressive strengths of mortars significantly while increasing their toughness [60]. Mohammed et al indicated that the replacement of fine aggregate with wood chipping in concrete resulted in the reduction of compressive strength, splitting tensile strength, and flexural strength [18].…”

Section: Serving As Aggregatesmentioning

confidence: 99%

“…In addition, the toughness of cementitious composites can be improved by lignocellulosic biomass. Guo et al found that the incorporation of wood chips into mortar could increase its flexural toughness and toughness index, which might be because wood chips arrest cracks of mortar and consequently results in a more ductile failure mode; also, the untreated wood chips lead to higher toughness than the thermally treated wood chips [60]. [62]…”

Section: Serving As Aggregatesmentioning

confidence: 99%

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State-of-the-art review on the use of lignocellulosic biomass in cementitious materials

Guo¹,

Sun²,

Feng³

et al. 2022

Sustain. Struct.

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The lignocellulosic biomass wastes cause some burden on the environment; meanwhile, the concrete industry is faced with large amounts of carbon dioxide emissions and raw mineral materials consumption. The use of lignocellulosic biomass wastes in cementitious materials not only provides an alternative to deal with the wastes but also favors the sustainable development of concrete industry. This review first introduces the characteristics of lignocellulosic biomass and then examines its effect on the mechanical properties, shrinkage, cracking, and some other properties of cement composites. Results show that lignocellulosic biomass can be directly used for three purposes: reinforcements, aggregates, and cement replacements. Although the lignocellulosic biomass cannot always enhance the mechanical properties of cementitious materials, it can improve toughness, shrinkage, cracking, heat insulation, etc. Additionally, some concerns with the use of lignocellulosic biomass are summarized, for which some physical and chemical modification methods (heating treatment, boiling treatment, torrefaction treatment, etc.) are identified to change the structure or remove amorphous components of lignocellulose biomass or prevent it from directly contacting cementitious materials. This review can provide some guidance for designing sustainable cementitious materials with lignocellulosic biomass.

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“…Previous studies [5][6][7][8][9][10][11] revealed improvements in the mechanical properties and durability of concrete mixtures, in which PC was partially replaced with wood ash or fly ash. Substituting aggregates with wood process waste such as wood chips, flax or hemp was also shown to enhance the mechanical or thermal properties of concrete mixtures [11][12][13][14][15][16][17][18]. Further research on fiber-reinforced concrete reported that the addition of synthetic fibers-such as polypropylene (PP), polyethylene (PE), polyvinyl alcohol (PVA)-or steel fibers could increase the fire resistance, ductility, tensile strength, impact resistance and toughness of concrete mixtures [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar

Maier

Javadian²,

Saeidi³

et al. 2020

Applied Sciences

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In this study, a sustainable mortar mixture is developed using renewable by-products for the enhancement of mechanical properties and fracture behavior. A high-volume of fly ash—a by-product of coal combustion—is used to replace Portland cement while waste by-products from the production of engineered bamboo composite materials are used to obtain bamboo fibers and to improve the fracture toughness of the mixture. The bamboo process waste was ground and size-fractioned by sieving. Several mixes containing different amounts of fibers were prepared for mechanical and fracture toughness assessment, evaluated via bending tests. The addition of bamboo fibers showed insignificant losses of strength, resulting in mixtures with compressive strengths of 55 MPa and above. The bamboo fibers were able to control crack propagation and showed improved crack-bridging effects with higher fiber volumes, resulting in a strain-softening behavior and mixture with higher toughness. The results of this study show that the developed bamboo fiber-reinforced mortar mixture is a promising sustainable and affordable construction material with enhanced mechanical properties and fracture toughness with the potential to be used in different structural applications, especially in developing countries.

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Impact of thermally modified wood on mechanical properties of mortar

Cited by 19 publications

References 35 publications

Effect of microwave assisted alkali pretreatment and other pretreatment methods on some properties of bamboo fibre reinforced cement composites

Effect of microwave assisted alkali pretreatment and other pretreatment methods on some properties of bamboo fibre reinforced cement composites

State-of-the-art review on the use of lignocellulosic biomass in cementitious materials

Mechanical Properties and Flexural Behavior of Sustainable Bamboo Fiber-Reinforced Mortar

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