al Experimental Investigation on the Bending Behaviour of Textile Reinforced Concrete (TRC)

Textile-Reinforced Cement (TRC) was used in structural retrofitting and strengthening existing structures. While at present, recent studies have turned around using TRC as an independent structural element. This research presented an experimental study on the flexural behavior of TRC plates. Several parameters were taken into account, specifically, (a) the number layer of textile fiber materials (1, 2, and 3); (b) the configuration of the reinforcement (together or interface); (c) thickness of TRC plate (50, 70) mm. This study included preparing and testing twelve specimens; two specimens were un-reinforced, whereas the rest ten specimens were reinforced by dry carbon fiber textile. The results found that increasing the number of layers for both reinforcement configurations led to increased flexural capacity. Increasing the thickness of the plate has a negative effect on the flexural capacity for both reinforcement configurations. Finally, the interface reinforcement configuration with thickness 50 mm or 70 mm had higher flexural capacity than the specimens with together reinforcement configuration.

Studi Parametrik Pengaruh Variasi Pengekangan Terhadap Nilai Kapasitas dan Daktilitas Penampang Kolom Beton Bertulang Bentuk T

Column has a function as a successor of the entire building load for foundation with a cross-sectional shape which generally a square. In its development, the shape of column section has begun to vary, namely the 'L', 'T' and 'Plus (+)' shaped sections. The purpose of this study was to determine the effect of restraint parameters such as diameter of stirrups, distance between stirrups, diameter and configuration of longitudinal reinforcement also concrete quality on the capacity and ductility of T-shaped non-square column using Response-2000, XTRACT and SAP2000 programs to ensure the percentage comparison of the analysis result data is not more than 5%. The results of this study for each type of cross-section, namely each increase in the percentage of concrete quality parameters ranging from 25-35 MPa, the diameter of longitudinal reinforcement and diameter of stirrups will increase the value of capacity and decrease the value of ductility, while for each increase in the percentage of parameters the distance between stirrups will decrease the value of capacity and the ductility value. Meanwhile, the variation of longitudinal reinforcement configuration produces T2-1 section as cross section with the largest capacity value and T1-2 section as cross section with the greatest ductility value.

Contribution of Transverse Reinforcement Configuration on Concrete Shear Capacity of RC Column

Proper design of transverse reinforcement in the RC column is needed to maintain its ability to deform under axial and shear load safely. Even though mandatory building codes for transverse support of the RC column exist, shear failure was still found in the last high earthquake in Pidie, Aceh, in 2016. Therefore, as an attempt to improve RC column strength and elasticity, the effect of transverse reinforcement configuration was evaluated experimentally to a column subjected to an axial and shear load. The experiment was conducted by using four-column specimens with a cross-section 200 x 200 mm. Four types of transverse reinforcement configurations were applied in each column. The test was carried out by loading an axial load always and shear load gradually until its failure. The test results show that the configuration of transverse reinforcement has a significant effect of maintaining column stiffness, which was subjected to compressive axial load and shear load. Furthermore, the arrangement of transverse reinforcement influences the compressive strength significantly and enhance the concrete shear capacity of a column due to its confinement effect.

Numerical Research on Behaviour of Beams with Different Reinforcement Configurations

As the field of infrastructure develops, a large number of structures are built across the country. A major portion of these structures tend to be Reinforced Concrete structures. One of the important constituent of Reinforced Concrete structures are steel reinforcements. This high use of reinforcement causes stress both in terms of cost and also over natural resources of our country viz., iron ore. The main purpose of this project is to reduce the reinforcement in concrete beams by altering their configurations. The effective load carrying capacity of beams with different configurations are tested and compared. At the end of this experiment the most effective reinforcement configuration for beams can be figured out.

Experimental Study of Multi-Ribbed One-Way Composite Slabs Made of Steel Fibre, Foam, and Normal Concrete

This paper aims to study the effect of reinforcement configuration (steel fibre and rebar) on the mechanical performance of composite slabs of the same total steel contents. We manufactured four pieces of fullscale multi-ribbed composite prefabricated slabs with different reinforcement configurations by using steel fibrereinforced concrete, foam concrete, and normal concrete. The multi-ribbed composite prefabricated slab has many excellent properties, such as light weight, good thermal and sound insulation. Thus, it can be applied to fabricated structures. In addition, the composite prefabricated slabs with the same total steel contents but with different reinforcement configurations were studied under the same static load, and many technical indicators such as crack resistance capacity, yield load, ultimate load capacity, maximum deflection, destructive pattern, and stress of steel rebar were obtained. Results indicate reinforcement configuration has a significant effect on the mechanical performance of composite prefabricated slabs with the same total steel contents, and composite prefabricated slabs reinforced with longitudinal rebar and steel fibre (volume fraction is 1.5%) have the best mechanical performance and ductility.

Can Polyolefin Fibre Reinforced Concrete Improve the Sustainability of a Flyover Bridge?

The use of polyolefin fibre reinforced concrete (PFRC) as an alternative for reducing the reinforcing steel bars employed in reinforced concrete has become real in the past years. This contribution analyses the improvements in sustainability that a change in the aforementioned reinforcement configuration might provide in a flyover bridge. Economic, environmental and social parameters of both possibilities were studied by means of the integrated value model for sustainable assessment. Such model, which acronym is MIVES (Modelo Integrado de Valor para una Evaluación Sostenible, MIVES), is a multi-criteria decision-making method based on the value function concept and the seminars delivered by experts. The results of the MIVES method showed that the use of PFRC in combination with reinforced concrete (RC) has a sustainability index 22% higher. An analysis of the parameters that form this evaluation shows that there are no remarkable differences in the financial costs between the two possibilities studied. Nevertheless, social and environmental aspects provide with a better qualification the option of building a bridge by using PFRC combined with RC.