Experimental application of EPS concrete in the new prototype design of the concrete barrier

Mohammed, Hasan Jasim; Zain, Muhammad Fauzi Mohd.

doi:10.1016/j.conbuildmat.2016.07.105

Cited by 41 publications

(7 citation statements)

References 14 publications

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“…Meanwhile, the concrete mixtures RC50 and RC70 were also made by replacing 30% of the raw aggregate with EPS beads and adding another 20 and 40% (in terms of total volume) of RAC, respectively, bringing the total replacement to 50 and 70%, respectively. In addition, silica fume (SF) material was used to enhance the bonding performance between the cement and EPS beads, as previously advised in [ 45 ]. Lastly, for all concrete mixtures, a water/cement (w/c) ratio of 0.46 was used together with the superplasticizer liquid (Real Flow 611).…”

Section: Experimental Approachmentioning

confidence: 99%

“…Furthermore, using the lightweight concrete infill material can significantly reduce the overall self-weight of the CFST members [ 17 , 41 , 42 , 43 ], which is significant given that the self-weight represents one of the most important challenges in terms of adopting composite members of this type in modern structures. Generally, using expanded polystyrene (EPS) beads as a replacement for the raw aggregate is the most effective method that is usually used to achieve lightweight concrete mixtures [ 19 , 44 , 45 , 46 ]. For instance, EPS can also be sourced from waste polystyrene materials (recycled materials).…”

Section: Introductionmentioning

confidence: 99%

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Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

et al. 2021

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The flexural strength of Slender steel tube sections is known to achieve significant improvements upon being filled with concrete material; however, this section is more likely to fail due to buckling under compression stresses. This study investigates the flexural behavior of a Slender steel tube beam that was produced by connecting two pieces of C-sections and was filled with recycled-aggregate concrete materials (CFST beam). The C-section’s lips behaved as internal stiffeners for the CFST beam’s cross-section. A static flexural test was conducted on five large scale specimens, including one specimen that was tested without concrete material (hollow specimen). The ABAQUS software was also employed for the simulation and non-linear analysis of an additional 20 CFST models in order to further investigate the effects of varied parameters that were not tested experimentally. The numerical model was able to adequately verify the flexural behavior and failure mode of the corresponding tested specimen, with an overestimation of the flexural strength capacity of about 3.1%. Generally, the study confirmed the validity of using the tubular C-sections in the CFST beam concept, and their lips (internal stiffeners) led to significant improvements in the flexural strength, stiffness, and energy absorption index. Moreover, a new analytical method was developed to specifically predict the bending (flexural) strength capacity of the internally stiffened CFST beams with steel stiffeners, which was well-aligned with the results derived from the current investigation and with those obtained by others.

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Section: Experimental Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

et al. 2021

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“…Expanded polystyrene (EPS) is an environmentally friendly building material characterized by its thermal insulation and acoustic insulation properties [1][2][3][4][5][6][7][8]. In recent years, it has seen increasing use in insulation wall panels, marine engineering, protective engineering, and road engineering [9][10][11][12]. With the growing interest in low-carbon building materials, the scope of EPS concrete's applications has expanded, and it has increasingly been utilized as a structural material [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A New Type of Mineral Admixture and Its Impact on the Carbonation Resistance of EPS Concrete

Wang

Yuan

et al. 2023

Sustainability

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In this study, the effect of microbead dosages (0%, 5%, 10%, 15%, and 20%) on the carbonation resistance of expanded polystyrene (EPS) concrete was investigated. Five groups of EPS concrete specimens were produced and underwent rapid carbonation testing. The carbonation depth and strength after carbonation of the specimens were measured at different carbonation ages (7 days, 14 days, and 28 days) and analyzed to determine the effect of microbead dosages and compressive strength on carbonation resistance. Results indicated that the carbonation depth increased with the progression of carbonation time. The introduction of microbeads was found to significantly improve the carbonation resistance of EPS concrete, leading to a reduction in carbonation depth of over 50% after 28 days and an increase in strength after carbonation by 18–56%. A relative compressive strength model for EPS concrete after carbonation was developed, which could accurately characterize the growth of compressive strength. Based on the analysis of EPS concrete carbonation depth data, a prediction model for the carbonation depth of EPS concrete with microbead dosage was established through fitting, providing improved accuracy in predicting carbonation resistance. The microstructure of EPS concrete was also examined using scanning electron microscopy to uncover the underlying mechanisms of microbead enhancement on carbonation resistance. These findings have potential implications for future research and engineering applications in the carbonation resistance of EPS concrete.

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“…EPS concrete has been widely used in civil engineering structures for insulating layers or blocks [1], semi-structural or structural elements [2], sub-base of pavements, road barriers, floating marine structures, protective layer, and military structures for energy absorbing [3,4,5]. Structural EPS concrete, with design strengths between 21 and 35 MPa [6], has become a focused group of EPS concrete for the increasing strength demands of construction projects.…”

Section: Introductionmentioning

confidence: 99%

“…Researches on the dynamic properties of EPS concrete were mainly focused on dynamic compressive/tensile performance [10,11] and energy absorption properties under drastic instantaneous impact [4,5]. Actually, EPS concrete could be designed to endure cyclic loadings, such as traffic loads, and its dynamic properties would not be the same as those measured in other conditions [12].…”

Section: Introductionmentioning

confidence: 99%

Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes

You

Miao

et al. 2019

Materials

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The fatigue and durability characteristics of structural expanded polystyrene concrete (EPS) are especially important when it was applied for structural elements in long-term service. In order to study the fatigue and durability behavior of structural EPS concrete, the long-term cyclic loading experiments and wetting–drying (W-D) cyclic experiments were conducted, respectively. The structural EPS concrete was found to have a relatively large damping and a fairly low dynamic elastic modulus under long-term cyclic load, which illustrated that it had a better energy absorption effect and toughness than plain concrete of the same strength level. Even if fine cracks appeared during the cyclic loading process, the relevant dynamic performance remained stable, which indicated that the structural EPS concrete had superior fatigue stability. In W-D cyclic experiments, the structural EPS concrete exhibited superior sulfate resistance. During the erosion test process, there was a positive correlation between the mass change and the evolution of the compressive strength of the structural EPS concrete, which indicated that ΔmB could be substituted for Δf to evaluate the degree of the structural EPS concrete eroded by sulfate attack. The study focuses on the fatigue performance and sulfate resistance of structural EPS concrete and is of important engineering value for promoting practical long-term operations.

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Experimental application of EPS concrete in the new prototype design of the concrete barrier

Cited by 41 publications

References 14 publications

Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

Flexural Strength of Internally Stiffened Tubular Steel Beam Filled with Recycled Concrete Materials

A New Type of Mineral Admixture and Its Impact on the Carbonation Resistance of EPS Concrete

Study on the Fatigue and Durability Behavior of Structural Expanded Polystyrene Concretes

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