Fatigue behaviour of interlocking grouted stabilised mud-fly ash brick masonry

Nazar, Maqsud E.; Sinha, Sachchidanand

doi:10.1016/j.ijfatigue.2006.07.018

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…It can reduce the construction time significantly and thus cut the construction cost. Most of these blocks are hollow (17)(18)(19), some are solid (20) and curved (21), but in few cases, with provisions of holes for reinforcement. These blocks can be prepared mechanically or manually, but in some cases, it requires very complicated moulds and manual casting.…”

Section: Structural Advantages Of Proposed Constructionmentioning

confidence: 99%

“…These blocks can be prepared mechanically or manually, but in some cases, it requires very complicated moulds and manual casting. Usually, the material is concrete (17)(18)(19); stabilized soil (21,22) and sand-fly ash (20,23) are also used for few blocks. The thickness of these blocks also varies, making them suitable either for load bearing, partition or cladding walls.…”

Section: Structural Advantages Of Proposed Constructionmentioning

confidence: 99%

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Use of coconut fibre reinforced concrete and coconut-fibre ropes for seismic-resistant construction

Ali¹

2016

Mater. construcc.

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Earthquake-resistant and economical housing is the most desirable need in rural areas of developing countries. These regions often suffer significant loss of life during a seismic event. To enable an efficient and cost-effective solution, a new concept of construction, i.e. a wallette of interlocking blocks with movability at the interface and rope reinforcement, is investigated. The novel interlocking block is made of coconut fibre reinforced concrete (CFRC). The reason for using coconut fibre is their highest toughness amongst natural fibres. This paper describes the in-plane behaviour of the interlocking wallette under earthquake loadings. The wallette response is measured in terms of induced acceleration, block uplift, top maximum relative displacement and rope tension. The applied earthquake loadings cannot produce any damage in the structure, i.e. blocks and/or ropes. The response of the wallette is explained in detail along with correlation of materials aspect with structural behaviour. RESUMEN: Uso de hormigón reforzado con fibras de coco para construcciones sismo resistentes.En las zonas rurales de los países en desarrollo, entre las características principales que deben reunir las viviendas es que sean tanto económicas como sismoresistentes, ya que en estas zonas la pérdida de vidas humanas debido a los terremotos es aun elevada. A fin de hallar una solución que cumple con estos requisitos de manera técnica y económicamente efectiva, se ha investigado un nuevo concepto constructivo: un murete de bloques conjugados con movilidad en el interfaz y reforzado con cuerda. Este novedoso bloque conjugable está realizado en hormigón reforzado con fibra de coco (CFRC), elegida por su alta tenacidad, la mayor de entre las fibras naturales. El artículo describe el comportamiento dentro del plano del murete conjugado frente a las cargas sísmicas. La respuesta de esta estructura se ha medido en función de la aceleración inducida, el levantamiento de los bloques, el desplazamiento relativo máximo y la tensión de las cuerdas, determinándose que ni los bloques ni las cuerdas han resultado dañados por las cargas sísmicas aplicadas. La respuesta del murete se describe en detalle, relacionando las propiedades de los materiales con su comportamiento estructural.

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Section: Structural Advantages Of Proposed Constructionmentioning

confidence: 99%

Section: Structural Advantages Of Proposed Constructionmentioning

confidence: 99%

Use of coconut fibre reinforced concrete and coconut-fibre ropes for seismic-resistant construction

Ali¹

2016

Mater. construcc.

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“…Loading pattern and boundary conditions also have significant impacts on the shear resistance of the URM walls (Gams et al, 2017; Tomaževič et al, 1996). For example, the repeated compressive loading can cause significant reduction in resistance (Nazar and Sinha, 2007a). In addition, the URM walls’ shear resistance is influenced by some retrofitting measurements, like grouting or mortar joint reinforcement (Bolhassani et al, 2016; Schultz et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Shear resistance estimation for unreinforced masonry walls based on Gaussian process models

Peng

Wei

Gang

et al. 2018

Advances in Structural Engineering

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Uncertainty results in misestimate of the shear resistance of unreinforced masonry walls. The misestimate is difficult to correct using deterministic calculation models even when sophisticated numerical models are used. To address this issue, the authors converted the deterministic calculation models for shear resistance of unreinforced masonry walls into prior Gaussian process models and then collected experimental results to train the prior Gaussian process models. They evaluated the resultant posterior Gaussian process models and found two of them are preferable. The two favorable posterior Gaussian process models can well interpolate the collected experimental results and can predict the shear resistance of the unreinforced masonry walls in the authors' experiments with full information. The interpolation and predication demonstrate that the posterior Gaussian process models can combine and weight prior engineering judgments and observational information from experimental results and then can quantitatively specify the remaining uncertainty of the estimation. In addition, the Gaussian process models are efficient, favorable for reliability analysis, and easily improvable. Therefore, they are potentially useful in engineering practices.

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“…According to several authors, micro-cracks are initiated and develop in slip bands as a result of concentrated strains (stress) and accumulation of energy in the planes between them [ 24 , 25 , 26 ]. The development of scratches is more clearly visible on the borders between the grains rather than inside the grains, since the dislocation occurs towards the boundaries of the grains, where faults and pores are formed at the interface of the solid phases, which is confirmed by the observations made by Hoła and Fic et al [ 16 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Processes of Fatigue Destruction in Nanopolymer-Hydrophobised Ceramic Bricks

et al. 2017

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Abstract:The article presents a proposal of a model of fatigue destruction of hydrophobised ceramic brick, i.e., a basic masonry material. The brick surface was hydrophobised with two inorganic polymers: a nanopolymer preparation based on dialkyl siloxanes (series 1-5) and an aqueous silicon solution (series 6-10). Nanosilica was added to the polymers to enhance the stability of the film formed on the brick surface. To achieve an appropriate blend of the polymer liquid phase and the nano silica solid phase, the mixture was disintegrated by sonication. The effect of the addition of nano silica and sonication on changes in the rheological parameters, i.e., viscosity and surface tension, was determined. Material fatigue was induced by cyclic immersion of the samples in water and drying at a temperature of 100 • C, which caused rapid and relatively dynamic movement of water. The moisture and temperature effect was determined by measurement of changes in surface hardness performed with the Vickers method and assessment of sample absorbability. The results provided an approximate picture of fatigue destruction of brick and hydrophobic coatings in relation to changes in their temporal stability. Additionally, SEM images of hydrophobic coatings in are shown.

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Fatigue behaviour of interlocking grouted stabilised mud-fly ash brick masonry

Cited by 12 publications

References 8 publications

Use of coconut fibre reinforced concrete and coconut-fibre ropes for seismic-resistant construction

Use of coconut fibre reinforced concrete and coconut-fibre ropes for seismic-resistant construction

Shear resistance estimation for unreinforced masonry walls based on Gaussian process models

Processes of Fatigue Destruction in Nanopolymer-Hydrophobised Ceramic Bricks

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