Seismic performance test of rammed earth wall with different structural columns

Zhou, Tiegang; Zhang, Zaiyu; Su, Zhifan; Tian, Peng

doi:10.1177/1369433220944506

Cited by 8 publications

(3 citation statements)

References 25 publications

(25 reference statements)

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“…In order to study failure mode of CEB wall under earthquake, a two-story newly built adobe demonstration house in northwestern Shaanxi Province, China, was selected as the prototype. The size of the prototype was 4000 mm × 2400 mm × 480 mm, and the 1/2 scale was adopted to obtain the size of the adobe wall used in this experiment is 2000 mm × 1200 mm × 240 mm (El-Nabouch et al, 2017;Zhou et al, 2020). The rotary brick pressing mechanism was adopted to make CEBs, and 6 pieces of the walls were built with different types of CEBs including the hollow CEB, the hollow CEB with core column and the solid CEB.…”

Section: Test Specimensmentioning

confidence: 99%

Seismic performance of new adobe bricks masonry: Design and experiment

Zhou

Xin

et al. 2021

Advances in Structural Engineering

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At present, adobe houses with traditional characteristics are still widely used in rural areas in western China, but their seismic performance is relatively poor, and they often suffer serious damage under earthquake. To improve the seismic performance of traditional adobe buildings while retaining the characteristics of residential buildings, the mechanical properties of compressed earth blocks (CEB) were tested in this study, and the microstructure characteristics of CEB after failure were analyzed by electron microscope. On this basis, six adobe wall specimens were designed and tested by quasi-static loading to investigate the influence of core columns and different types of bricks on its seismic performance. The results show that the core column can improve the bearing capacity and shear capacity of hollow CEB, and it can also significantly increase the bearing capacity, energy dissipation capacity, and ductility of CEB wall. In general, the adobe wall with core columns shows excellent seismic performance, which can provide a new choice for improving the seismic performance of the adobe house.

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Section: Test Specimensmentioning

confidence: 99%

Seismic performance of new adobe bricks masonry: Design and experiment

Zhou

Xin

et al. 2021

Advances in Structural Engineering

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“…Strength and durability of rammed earth construction can be improved to a great extent by using ordinary Portland cement (OPC) as stabilizer varying from 4% to 12%. Stabilized rammed earth constructions were superior in terms of strength and durability when compared to unstabilized rammed earth construction (Arslan et al, 2017;Bahar et al, 2004;Hejazi et al, 2012;Jayasinghe and Kamaladasa, 2007;Raavi and Tripura, 2020;Tripura and Singh, 2015;Walker, 1995;Zhou et al, 2020).…”

Section: Introductionmentioning

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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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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“…Based on the investigation and analysis of the earthquake damage mechanism of raw-soil buildings, Pavan et al [6] analyzed the interfacial behavior of cement-stabilized rammed Earth. Zhou et al [7] conducted a shaking table test and analyzed the scale model of two types of adobe house reinforcement modes. e results showed that the proposed plaster-adobewall structure and the wooden-frame-adobe-wall structure could resist earthquakes of magnitude 8.0.…”

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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Seismic performance test of rammed earth wall with different structural columns

Cited by 8 publications

References 25 publications

Seismic performance of new adobe bricks masonry: Design and experiment

Seismic performance of new adobe bricks masonry: Design and experiment

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

Seismic Vulnerability Analysis of Rural Modified Raw‐Soil Structures

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