Axial Load-Capacity of Bamboo-Steel Reinforced Cement Stabilised Rammed Earth Columns

Tripura, Deb Dulal; Singh, Konjengbam Darunkumar

doi:10.1080/10168664.2019.1528705

Cited by 14 publications

(11 citation statements)

References 18 publications

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“…This may be attributed to higher tensile strength and ductility possessed by steel bars which is capable of resisting the lateral pressure offered by the inner core (CSRE) of the column. Similar pattern of failure was observed in BSR200 columns as shown in Figure 6b (27).…”

Section: Production and Testing Of Specimensupporting

confidence: 81%

“…Lateral reinforcement at 200 mm, 100 mm and 50 mm centre-to-centre spacing (i.e., a tie spacing of about 133.3%, 67% and 33.3% respectively to the column width) were provided and denoted as SR200, SR100 and SR50, respectively comprising of at least three specimens for each series of columns. Two legged steel ties of 90 mm x 90 mm size bent at 90°and 4 longitudinal bars of 8 mm diameter were provided as lateral and longitudinal reinforcement as shown in Figure 4, which is similar to the earlier work by the authors (27). Table 2 outlines the reinforcement data where longitudinal reinforcement ratio (ρ l ) of about 0.89% and lateral reinforcement ratio (ρ w ) of about 0.63%, 1.26% and 2.51% were determined as follows [1,2].…”

Section: Production and Testing Of Specimenmentioning

confidence: 90%

“…Further, a 20 mm thick mild steel plate of size 148 mm x 148 mm with 12 mm diameter holes at four corners at about 30 mm away from the edge was employed ( Figure 3b) to enable the insertion of vertical reinforcement. More details of reinforcement and compaction procedure have been described in the earlier work by the authors (27). Figure 3c shows a sample of a steel reinforced column.…”

Section: Materials Properties and Equipmentmentioning

confidence: 99%

“…A 500 kN motorized hydraulic jack was used to apply vertical load on 250 kN load cell which was placed in between the loading arm of the jack and the articulated plate resting on the test specimen. The loading rate was maintained at about 2.5 kN/ min (approximately) until failure (27). Six digital dial gauges were used to measure the lateral movement of column at every 10 kN loading interval.…”

Section: Production and Testing Of Specimenmentioning

confidence: 99%

“…Failure of SR200 columns occurred close to the loading end. This can be attributed to development of localized stress concentration due to weak shear wedge zone resulting from platen effect as shown in Figure 7 in UCSRE column (27), leading to early failure of longitudinal steel reinforcement and preventing further splitting of CSRE in presence of lateral ties. It can also be noticed from Figure 6a that the altitude of shear wedge pyramid is ~ 97-167 mm, which is about ~ 48%-83% of the tie spacing (i.e.…”

Section: Production and Testing Of Specimenmentioning

confidence: 99%

See 4 more Smart Citations

Mechanical behaviour of rammed earth column: A comparison between unreinforced, steel and bamboo reinforced columns

Tripura

Singh

2018

Mater. construcc.

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This paper presents an experimental study on the behavior of cement stabilized rammed earth (CSRE) column reinforced with steel under axial loading and its comparison with unreinforced and bamboo reinforced columns. Effects of structural parameters such as tie / stirrup spacing on the failure pattern, lateral and axial deformation of columns are studied. Test results show that the load-capacity of columns increases with increase in lateral / tie reinforcement ratio. Maximum axial and lateral deformations occur in columns with least tie spacing. Behavior of CSRE columns reinforced with close tie spacing is characterized by gradual spalling of cover at the failure zone. Steel reinforced columns perform better than other column types in terms of load-capacity; hence it may be used as structural member adjacent to walls for low-rise rammed earth houses. Proposed reinforcement technique can be adopted in the field for enhancement of greater strength and performance of columns.

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Section: Production and Testing Of Specimensupporting

confidence: 81%

Section: Production and Testing Of Specimenmentioning

confidence: 90%

Section: Materials Properties and Equipmentmentioning

confidence: 99%

Section: Production and Testing Of Specimenmentioning

confidence: 99%

Section: Production and Testing Of Specimenmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical behaviour of rammed earth column: A comparison between unreinforced, steel and bamboo reinforced columns

Tripura

Singh

2018

Mater. construcc.

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Neural-network-based approach to predict the deflection of plain, steel-reinforced, and bamboo-reinforced concrete beams from experimental data

2019

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The necessity of providing low-cost housing to economically weaker sections of society has been recognised by the national government of India. In mountainous areas, the use of locally available construction material, such as bamboo, as concrete reinforcement has increased due its easy availability and economic benefit. However, due to the inadequate codal provisions for the design and detailing of bamboo-reinforced structures, evaluating the serviceability criteria for their deflection behaviour under different loads is difficult. Furthermore, factors such as bond failure between reinforcement and concrete, shrinkage and corrosion of reinforcing material, and uncertainty in material strength make the prediction of deflection even more cumbersome. This study presents an artificial neural network (ANN)-based method modelled using MATLAB for predicting the deflection behaviour of three types of beams, namely plain, steel-reinforced, and bamboo-reinforced beams. Experimental investigation is conducted to record data at regular load increments for the aforementioned three beam typologies fabricated in the laboratory under two-point loading for 28 days. A total of 122 laboratory test data are recorded for modelling the ANN. The used approach involves predicting the relationship among the applied load, tensile strength of the reinforcement, percentage (amount) of reinforcement (taken as input), and deflection of the beam (obtained as output). The present ANN approach exhibits gives satisfactory performance (coefficient of determination (R 2) = 0.9983 and mean square error = 0.00049) in predicting the deflection behaviour of beams. Hence, the ANN approach can be used as an efficient and robust tool in predicting serviceability behavior of different types of reinforced concrete beams.

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

Tripura

Gupta

Debbarma

et al. 2020

Construction and Building Materials

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Axial Load-Capacity of Bamboo-Steel Reinforced Cement Stabilised Rammed Earth Columns

Cited by 14 publications

References 18 publications

Mechanical behaviour of rammed earth column: A comparison between unreinforced, steel and bamboo reinforced columns

Mechanical behaviour of rammed earth column: A comparison between unreinforced, steel and bamboo reinforced columns

Neural-network-based approach to predict the deflection of plain, steel-reinforced, and bamboo-reinforced concrete beams from experimental data

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

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