Flexural Behavior of Normal and Lightweight Concrete Composite Beams

Syahrul, Syahrul; Tjaronge, M. W.; Djamaluddin, Rudy; Amiruddin, A. A.

doi:10.28991/cej-2021-03091673

Cited by 8 publications

(6 citation statements)

References 18 publications

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“…In recent years, several studies have been carried out to reduce the use of concrete in construction, especially for beam sections [4], reporting a reduction in concrete in tension zones of up to 25%, and making hollow beams using GI pipes would be economical. The flexural strength of the RC hollow beam is almost the same as that of the RC control beam [5][6][7]; in another study, regarding the optimization of structural materials, Manikandan et al [8] introduced hollow-core to the use of Expanded Polystyrene Foam in the zone tensile strength in RC beams, Patel [9] using hollow balls in reinforced concrete beams, obtained a weight reduction of about 12% and 33% of the crack and rupture index which is higher than that of control beam beams; furthermore, several studies on hybrid beams, layer on the tensile zone uses lower quality than concrete in the compression zone, by Ataria and Wang [10], Syahrul et al [11], Fakhruddin et al [12] and Hussein et al [13] the results show the same thing, namely the hybrid beam has decreased flexural capacity.…”

Section: Figure 1 Compression-tension Of a Flexural Beam Figure 2 Rec...mentioning

confidence: 99%

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

Amir

Rahman²,

Opirina³

et al. 2022

Civ Eng J

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This study aims to analyze the flexural capacity of RC without concrete in a tension cross-section using an experimental method. The number of specimens is three pieces, namely a spiral reinforced concrete beam (SBC) and a vertical reinforced concrete beam (CBN); both of these blocks are without concrete in the cross-section of the reinforcement and 60D tensile steel reinforcement in the support area, where D is the primary diameter, and a conventional concrete beam as the control beam (CB). The beam size is 3100×150×200 mm. The beams are supported by simple supports with a span of 3000 mm. The concrete in the structural beam elements, which work optimally to withstand the load, is the outermost fibre part of the side, while the concrete on the tension side does not have a direct role in determining the magnitude of the resisting moment. Therefore, the quality of the concrete in the concrete beam section must be optimized, while the concrete in the tension section must be minimized. Eliminating concrete in tension areas reduces the construction's self-weight and use of concrete-making materials. The main variables in this research are bending behaviour and crack pattern. The beam specimens were tested with two-point loading monotonically. By observing the crack pattern and failure mode, the results showed an increase in the capacity load of SBC by 21.58% CBN but a decrease of 27.57% compared to the CB control beam. Flexural cracks and beam failures resembled under-reinforcing. The flexural capacity was analyzed based on static analysis and then validated by calculating the ratio between the theoretical nominal moment and the experimental moment. This finding shows that changing the conventional shear reinforcement model to spiral can increase the flexural of the beam without concrete in the tension cross-section. Doi: 10.28991/CEJ-2022-08-11-014 Full Text: PDF

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Section: Figure 1 Compression-tension Of a Flexural Beam Figure 2 Rec...mentioning

confidence: 99%

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

Amir

Rahman²,

Opirina³

et al. 2022

Civ Eng J

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“…Gradasi gabungan agregat kasar alami Gradasi atau distribusi ukuran partikel pasir mempengaruhi sifat-sifat beton seperti kerapatan pengepakan, kandungan rongga, kemampuan kerja dan kekuatan (Sabih et al, 2016). Gradasi berupa sebaran butir agregat dalam satuan persentase, agregat kasar material lolos ayakan ukuran 20 mm, dan pasir lolos ayakan 4,75 mm (Syahrul et al, 2021). Pada penelitian ini dilakukan pengujian analisis saringan agregat kasar limbah bongkahan beton, agregat kasar alami dan pasir, serta modulus berdasarkan Standar Nasional Indonesia.…”

Section: Metodologiunclassified

Kinerja Beton Mengandung Agregat Kasar Daur Ulang Limbah Bongkahan Beton

Syahrul

2022

jurissipil

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Concrete waste generated from construction and demolition is a major problem generated in large quantities. The use of waste concrete as a substitute for conventional aggregate materials is a way to reduce waste generated from construction and sample testing and reduce exploration of natural materials, which have an impact on the environment and damage natural. Waste concrete can be recycled and can be used for various purposes. The use of coarse aggregate ranges from 70 to 80% in concrete mixes so the reuse of recycled concrete coarse aggregate has been widely reported, but few studies have focused on recycling and extracting value from concrete grains. The laboratory test method used several parameters to determine the physical properties of the concrete mixture and the characteristics of the compressive strength of cube concrete 150 mm x 150 mm x 150 mm with a sample size of 12 samples for 0%, and 12 samples for 100% recycled aggregate. The compressive strength of concrete was reviewed 3 and 28 days after treatment according to SNI. The compressive strength of recycled concrete aggregates increased by 11.54% at the age of 3 days and decreased by 27.64% at the age of 28 days.

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“…The water-cement ratio [26], was 0.63 and remained constant for all mixtures. The slump is between 60-180 mm, the gradation is in the form of aggregate grain distribution in percentage units, coarse aggregate material passes through 20 mm size sieve, and the sand passes through 4.75 mm sieve [27], according to the mix design. After mixing the concrete, it is carried out in stages maximizing the workability of the concrete [28].…”

Section: Preparation Of Mixtures and Proportionsmentioning

confidence: 99%

Characteristics of Concrete With Rice Husk Ash Local Kutai Kartanegara

Syahrul

2022

JTSP

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Abstract. Concrete material made from natural waste was developed to balance the use of concrete materials resulting from natural exploration with an impact on environmental damage, rice husk is a waste material from rice mills and contains reactive silica and has the benefit of reducing energy consumption in cement production. Laboratory test method in the form of testing the compressive characteristics used standard cube concrete 150 mm x 150 mm x 150 mm with a total sample of 24 samples. The effect of concrete strength on the amount of cement replacement is 0%; 5%; 10% ; and 15% which could be compared with concrete without using husk ash. The compressive strength obtained in terms of the age of the concrete is 28 days. The mechanical properties of husk ash at the age of 28 days gave optimal compressive strength results with the addition of 5% husk ash.

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Flexural Behavior of Normal and Lightweight Concrete Composite Beams

Cited by 8 publications

References 18 publications

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

Performance Flexural of RC Beams Without Concrete at Tension Cross-section

Kinerja Beton Mengandung Agregat Kasar Daur Ulang Limbah Bongkahan Beton

Characteristics of Concrete With Rice Husk Ash Local Kutai Kartanegara

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