Experimental study on the shear behaviour of precast concrete hollow core slabs with concrete topping

Ibrahim, Izni Syahrizal; Elliott, Kim S.; Abdullah, Redzuan; Kueh, Ahmad Beng Hong; Sarbini, Noor Nabilah

doi:10.1016/j.engstruct.2016.06.005

Cited by 79 publications

(41 citation statements)

References 4 publications

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“…As the clear space between adjacent girder flanges is short (50,200 and 500mm), the vehicle wheel load would be directly supported by the prestressed concrete girders considering the fact that the vehicular wheel contact area is 460×460mm [105]. The surface of the T-beam would be rough and wet prior to the application of the top slab so as to obtain a better performance [106]. The ultimate goal is to achieve a more economical design approach for slab-on-concrete girder bridges.…”

Section: On-going Researchmentioning

confidence: 99%

Transverse Slab Reinforcement Design of Concrete Bridge Deck: A Review

et al. 2018

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This paper reviews the current design practices of transverse slab reinforcement design in concrete bridge deck, which consist of concrete deck slab on wide concrete T-beams. The conventional bridge design method results in the provision of excessive transverse steel reinforcement in the concrete bridge deck slab due to the fact that, the slab is assumed to bear the applied vehicular loadings alone without considering the contribution of the wide T-beam flanges. Thus, the design which is based on bending and failure proved to be too conservative. Through critical review, issues regarding some design approaches were discussed. It has been found that, designing the deck slab in transverse direction would enable the vehicle wheel loads to be supported by the wide T-beam flanges and performance enhancement can be achieved by compressive membrane action resulted from the natural stiffness of the wide girder flanges. The presence of this membrane forces provides a punching shear capacity, which is far beyond the flexural design capacity for the new bridge deck system. This capacity would result in substantial reduction of the transverse reinforcement within the slab.

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Section: On-going Researchmentioning

confidence: 99%

Transverse Slab Reinforcement Design of Concrete Bridge Deck: A Review

et al. 2018

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“…Structurally, the voided slab system is an effective method for extending the span of a building or structure as it reduces the weight of concrete. Several researchers have maintained that the voided slab system would be advantageous not only in terms of structural and economic aspects but also because of its environmental friendliness [35][36][37]. From the structural design perspective, there are several studies that have examined and confirmed the stability and reliability of the voided slab system.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Carbon Dioxide Emissions of the Ordinary Reinforced Concrete Slab and the Voided Slab System During the Construction Phase: A Case Study of a Residential Building in South Korea

Paik¹,

Na²

2019

Sustainability

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The construction industry not only consumes a lot of energy but also emits large volumes of carbon dioxide. Most countries have established target reduction values of the carbon dioxide emissions to alleviate environmental burdens and promote sustainable development. The reduction in carbon dioxide emissions in the construction industry has been taking place in various ways as buildings produce large quantities of the carbon dioxide over their construction life cycle. The aim of this study is to assess and compare the carbon dioxide emissions of an ordinary reinforced concrete slab and the voided slab system applied to a case study involving a commercial-residential complex building in South Korea. Process-based life-cycle assessment (LCA) is adopted to compute the carbon dioxide emissions during the construction phase, which includes all processes from material production to the end of construction. The results indicate that the total CO2 emissions are 257,230 and 218,800 kg CO2 for the ordinary reinforced concrete slab and the voided slab system, respectively. The highest contributor to CO2 reduction is the embodied carbon dioxide emissions of the building materials, which accounts for 34,966 kg CO2. The second highest contributor is the transportation of the building materials, accounting for 3417 kg CO2.

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“…Cho and Chae [11] recommended the utilisation of recycled material and by-products, such as blast furnace slag and silica fume, as building materials during the construction stage. Likewise, design optimisation, such as replacing the structural systems, is one of the beneficial approaches during the early execution of construction projects [8,[28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Reducing Greenhouse Gas Emissions and Costs with the Alternative Structural System for Slab: A Comparative Analysis of South Korea Cases

Paik²

2019

Sustainability

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The construction industry is one of the main contributors to the production of large volumes of greenhouse gases, since it consumes a large quantity of energy and construction materials. The purpose of this research is to assess the environmental impacts and economic efficiency of the voided slab system compared to the ordinary reinforced concrete slab. A life cycle assessment (LCA) and the total cost of construction were calculated to evaluate the performance of both slab systems. Additionally, the total costs of construction for both cases were determined based on the unit price of the building materials. The results of this study indicate that manufacturing building materials contributes most to the total GHG emissions where concrete is responsible for nearly 1/2 of all emissions. Additionally, forms are the second largest contributor of the total GHG emissions and account for nearly 40% and 15% of emissions for the ordinary reinforced concrete slab and the voided slab system, respectively. This study verified that the voided slab system indicated better environmental performance than the ordinary reinforced concrete slab. The total GHG emissions of the ordinary reinforced concrete slab were 256,599 and 13,989 kg·CO2·eq, for concrete and forms, respectively. Additionally, the total GHG emissions of the voided slab system were 224,945 and 12,211 kg·CO2·eq. The reduction of GHG emissions from Case 1 for aboveground floors and Case 2 for underground parking was 12.3% and 12.7% over the ordinary reinforced concrete slab, respectively. The economic efficiency of the ordinary reinforced concrete slab and the voided slab system were assessed by comparison of the total costs of construction. This showed a total cost reduction of 12.3% and 11.2% for the case of applying the voided slab system to the aboveground floors and underground parking, respectively. Thus, replacing the ordinary reinforced concrete slab by the voided slab system in the aboveground floors and the underground would make it possible to decrease not only the emissions of GHG, but also the cost of construction.

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Experimental study on the shear behaviour of precast concrete hollow core slabs with concrete topping

Cited by 79 publications

References 4 publications

Transverse Slab Reinforcement Design of Concrete Bridge Deck: A Review

Transverse Slab Reinforcement Design of Concrete Bridge Deck: A Review

Comparison of Carbon Dioxide Emissions of the Ordinary Reinforced Concrete Slab and the Voided Slab System During the Construction Phase: A Case Study of a Residential Building in South Korea

Reducing Greenhouse Gas Emissions and Costs with the Alternative Structural System for Slab: A Comparative Analysis of South Korea Cases

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