Flexural strength and failure trend of bamboo and coir reinforced cement stabilized rammed earth wallettes

Tripura, Deb Dulal; Gupta, Satish C.; Debbarma, Bandana; Raavi, Satya Sai Deep

doi:10.1016/j.conbuildmat.2019.117986

Cited by 33 publications

(8 citation statements)

References 21 publications

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“…Similarly, 15 TB splints were also exposed to weathering prior to casting. To prevent the problem of water absorption and to improve the bond strength between cementstabilized rammed earth (CSRE) and bamboo splints, epoxy coating along with coarse sand was applied on the top of the splints as shown in Figure 1 (Tripura et al, 2020). Sample preparation.…”

Section: Reinforcing Steel Bars and Bamboo Splintsmentioning

confidence: 99%

“…For ramming and producing test blocks, standard Proctor method was adopted in accordance to IS 2720: Part 7 (Indian Standard, 1980). The moist mix was separated into 3 parts and compacted manually with 3 layers in a wooden mould of size 150 mm × 150 mm × 150 mm, with a circular hole of 25 mm diameter in the centre aiding for reinforcement insertion (Tripura et al, 2020). A plumb bob was used to ensure the verticality of reinforcement in the rammed earth during the production process and the layers were perpendicular to the axis of reinforcement provided as represented in Figures 2 and 3.…”

Section: Reinforcing Steel Bars and Bamboo Splintsmentioning

confidence: 99%

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Predicting the effect of weathering and corrosion on the bond properties of bamboo- and steel-reinforced cement-stabilized rammed earth blocks

Raavi

Tripura

2021

Advances in Structural Engineering

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In this article, the effect of weathering and corrosion on the bond properties of bamboo- and steel-reinforced cement-stabilized rammed earth blocks was investigated. The treated, untreated bamboo and steel reinforcement types were considered under regular and weathered categories. Reinforcement of 8 mm, 10 mm and 12 mm diameters were used along with 10% of cement as stabilizer. A total of 90 reinforced cement-stabilized rammed earth blocks were prepared and tested for bond strength. The investigation shows that the bond force and bond strength of all the blocks reduced due to weathering and corrosion of reinforcement. In case of blocks with bamboo reinforcement only, a minor reduction in bond properties (bond force and bond strength) was identified, but in case of blocks with steel reinforcement, a major reduction in bond properties was identified. All the blocks failed by either lateral splitting, pullout or pullout along with lateral splitting. However, the pullout failure was observed only in the blocks with weathered or corroded reinforcement, making it clear that the mode of failure was influenced by the type and physical condition of the reinforcement. Based on the results obtained, it was not advisable to use of corroded steel (CS) bars as reinforcement in rammed earth. However, considering the bond properties, treated bamboo can be a potential and economical alternative to CS. A series of statistical analysis was performed using the test data to predict the bond properties correlating perimeter, diameter, type and condition of reinforcement. The regression equations generated from statistical analysis represent a strong correlation between the actual and predicted values and can be used for predicting the bond properties of rammed earth accurately.

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Section: Reinforcing Steel Bars and Bamboo Splintsmentioning

confidence: 99%

Section: Reinforcing Steel Bars and Bamboo Splintsmentioning

confidence: 99%

Predicting the effect of weathering and corrosion on the bond properties of bamboo- and steel-reinforced cement-stabilized rammed earth blocks

Raavi

Tripura

2021

Advances in Structural Engineering

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“…La tierra es un material alternativo y sostenible que se usa desde tiempos conmemorables (Tripura, et al, 2019). Es considerado un recurso abundante en casi todo el mundo (Sitton, et al, 2018), tiene propiedades higroscópicas ventajosas debido a que respira absorbiendo o liberando humedad (Walter, et al, 2017).…”

Section: Suelounclassified

Uso de la metodología de la tierra comprimida estabilizada para la fabricación de ladrillos.

Pérez

Molina

2021

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Los materiales de construcción como los bloques de hormigón y el ladrillo de arcilla cocida son muy costosos y en algunas circunstancias generan un efecto perjudicial en el medio ambiente. Pese a que existe un sin número de experiencias y estudios para mejorar la durabilidad de los ladrillos estos no han sido difundidos suficientemente. Una de las alternativas es el ladrillo de tierra comprimido estabilizado, como material sostenible que utiliza suelos disponibles localmente, combinados con estabilizadores para mejorar su resistencia. Asimismo, el desarrollo de construcción de estos ladrillos es en situ y requiere mano de obra menos calificada.

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“…Tripura and Singh [14] discussed the mechanical behavior of columns reinforced with steel and bamboo. Tripura et al [15] further discussed the flexural strength and failure trend of bamboo and coir reinforced cement-stabilized rammed Earth wallets. An efficacious design and construction system for raw-soil structures is not currently available, and many self-built houses lack corresponding structural measures, which will significantly affect the seismic performance of raw-soil structures.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vulnerability Analysis of Rural Modified Raw‐Soil Structures

Hou

Zhang

et al. 2021

Shock and Vibration

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Based on the concept of environmental protection of solid waste utilization, material testing is conducted to achieve native improvement using coal gangue-based limestone-calcined clay cement (LC3). Finite element (FE) models of rural raw-soil architecture with a colored-steel roof (RACSR) were established. The effect of modified soil type and seismic character on the vulnerability of single-story raw-soil structures was investigated using probabilistic seismic demand (PSD) analysis. The seismic response characteristics of 80 representative sequences were comparatively investigated when subjected to northwest clay (raw soil) of China, fiber and stone-improved clay (modified soil), and coal gangue-based limestone-calcined clay cement (LC3 soil). The maximum interstory drift angle (ISDAmax) was lower in the LC3 soil model and the modified soil model compared to the raw-soil model. The use of LC3 soil improves structural resistance and reduces the damage probability of a structure, and the influence of different ultimate failure states on the vulnerability of the raw-soil structure was studied.

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Flexural strength and failure trend of bamboo and coir reinforced cement stabilized rammed earth wallettes

Cited by 33 publications

References 21 publications

Predicting the effect of weathering and corrosion on the bond properties of bamboo- and steel-reinforced cement-stabilized rammed earth blocks

Predicting the effect of weathering and corrosion on the bond properties of bamboo- and steel-reinforced cement-stabilized rammed earth blocks

Uso de la metodología de la tierra comprimida estabilizada para la fabricación de ladrillos.

Seismic Vulnerability Analysis of Rural Modified Raw‐Soil Structures

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