Investigation on the flexural behaviour of high-performance reinforced concrete beams using sandstone aggregates

Kumar, Pardeep; Mannan, Md. Abdul; Kurian, V.J.; Achuytha, H.

doi:10.1016/j.buildenv.2006.06.015

Cited by 37 publications

(14 citation statements)

References 13 publications

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“…The NA moves closer to the top of fiber with the increase in strength. This trend is similar to other reported studies ( Figure 6) for high-strength concrete beams with compressive strengths in the range from 60 to 130 MPa made with other aggregates [9,14,15]. It was noted from analysis that, for the design of flexural members, in high-strength concrete (HSC) the limit on the allowable x max /d suggested in ACI 318 [10] and ECP 203 [11] codes is conservative.…”

Section: Neutral Axis Depthsupporting

confidence: 88%

“…Figure 7 present the graph relationship of the NA depth values defined through parameter x exp /d, with the displacement ductility index, μ d . Its trend seems to show that, as the NA depth at failure increases, the beam's ductility decreases for both dolomite concrete beams and steel slag concrete beams, this agrees with [9,14,15], as shown in Figure 7.…”

Section: Evolution Of the Neutral Axis Depth With Ductilitysupporting

confidence: 76%

“…From the data in Table 8, it is noticed that no big difference between the strains for both RC beams with dolomite and the others with steel slag as a coarse aggregate. The recorded values of strains of steel slag concrete beams (especially, BS1 and BS2) were relatively higher when compared with the other high-strength concrete beams containing traditional coarse aggregate [9,[14][15][16]. The higher steel strains also show that good bond between steel bars and concrete existed till the yielding of steel.…”

Section: Concrete and Steel Strainsmentioning

confidence: 99%

“…Once flexural cracks formed, a change the in slope of the curve was observed, and this slope remained fairly linear until yielding of the steel reinforcement took place. From the moment deflection curves, it can be observed that steel slag concrete beams exhibit behavior nearly similar to that of control beams and other high-strength concrete beams containing traditional coarse aggregate [9,[14][15][16]. The observed experimental midspan deflection under service moment was compared with deflection evaluated from ACI 318 or ECP 203 (both codes are similar) as shown in Table 9.…”

Section: Concrete and Steel Strainsmentioning

confidence: 99%

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Flexural Behavior of Reinforced High-Performance Concrete Beams Made with Steel Slag Coarse Aggregate

Zaki

Metwally

El-Betar

2011

ISRN Civil Engineering

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In recent years, an emerging technology termed high-performance concrete (HPC) has become popular in construction industry. The constituent materials of HPC depend on the desired characteristics and the availability of suitable local economic alternatives. One of these alternatives is steel slag waste material. It is an industrial by-product waste particles resulted from reinforcing steel bars manufacture, its production is very huge; total quantity produced from all steel rebars manufacture factories in Egypt is nearly million tons/year. HPC made with steel slag aggregate (SSA) is considered as green concrete, using of steel-slag as a coarse aggregate increases the probability of consuming such large accumulations of slag (in HPC industry) which they represent as a waste and polluted material in environment. A total of eight under, balanced and over reinforced concrete beams were fabricated and tested. RC beams were made with HPC having compressive strength of 58.1 and 75.6 MPa and tensile reinforcement ratio in the range of 0.90 to 4.3%. Data presented concentrated on the chemical, physical, and mechanical properties of the used new material (SSA) and the flexural behavior of reinforced high-performance concrete beams made with steel slag coarse aggregate (RHPC-SSA) beams. It was observed that the RHPC-SSA beams can give satisfactory structural performance according to the American and Egyptian Building Codes.

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Section: Neutral Axis Depthsupporting

confidence: 88%

Section: Evolution Of the Neutral Axis Depth With Ductilitysupporting

confidence: 76%

Section: Concrete and Steel Strainsmentioning

confidence: 99%

Section: Concrete and Steel Strainsmentioning

confidence: 99%

See 2 more Smart Citations

Flexural Behavior of Reinforced High-Performance Concrete Beams Made with Steel Slag Coarse Aggregate

Zaki

Metwally

El-Betar

2011

ISRN Civil Engineering

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“…The investigated AAs include, but are not limited to, RCA (Alam et al, 2013;Etxeberria et al, 2007;Limbachiya et al, 2012;Sabai et al, 2013), building rubbles (Khalaf and Devenny, 2004), tire rubber (Nehdi and Khan, 2001), oil palm shells (Basri et al, 1999), and waste glass (Berry et al, 2011;Ling et al, 2013). Several researchers further investigated the structural applications of sustainable concrete in reinforced concrete beams or slabs (Akhtaruzzaman and Hasnat, 1986;Berry et al, 2011;Mannan and Ganapathy, 2004;Kumar et al, 2007). The research findings were mixed.…”

Section: The Emergency and Potential Use Of Sustainable Raw Materialsmentioning

confidence: 99%

Survey of the current status of sustainable concrete production in the U.S.

Jin

Chang

Soboyejo

2015

Resources, Conservation and Recycling

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Abstract:The wide use of concrete in construction has significantly impacted energy use and environmental quality. Fortunately, the emergence of sustainable concrete, made with alternative or recycled waste materials, offers great opportunities to improve concrete sustainability. This paper studies the current status of sustainable concrete production in the U.S. through a questionnaire survey. It revealed that the surveyed companies varied largely in their recognition and adoption of supplementary cementitious materials (SCMs) and alternative aggregates (AAs). Of the various alternative materials available, the most widely used by survey participants were limited to the three SCMs (fly ash, slag cement, and silica fume) and two types of aggregates (lightweight and recycled concrete aggregates). Multiple benefits and barriers to the adoption of SCMs and AAs, e.g., concrete properties, cost, and local availability, were also disclosed by survey participants. Statistical comparisons identified differences in sustainable concrete production between ready mixed concrete suppliers and concrete prefabricators, as well as in its applications in structural and nonstructural concrete components. The findings provide a better understanding of the U.S. sustainable concrete production and offer insights into how researchers can help address industry concerns about the implementation of sustainable concrete.

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Variability of coal mine overburden incorporated concrete and its effect on the seismic safety of reinforced concrete building

Jena,

Zade,

Sarkar

2024

Structural Concrete

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Improved utilization of coal mine overburden material (CMOB)‐incorporated concrete in the construction sector can contribute to developing a more sustainable built environment if the results of proven research on the behavior of structures constructed of CMOB‐incorporated concrete are applied. Even though there have only been a few studies on CMOB‐incorporated concrete, no research has been done on how this type of concrete can be used in structures. In particular, researchers have not paid much attention to the fact that the strength properties of CMOB‐incorporated concrete tend to be very variable, even though this variability is needed for a wide range of structural applications (such as limit state design formulation, reliability‐based structural analysis, etc.). For the first time, this research provides quantitative estimates of the variability in compressive‐, flexural‐, and splitting tensile strengths of cured concrete using varying amounts of a CMOB sample as fine aggregate. Taking into account the suggested distribution model, the research also provides a reliability‐based seismic risk assessment of a standard CMOB‐incorporated framed building. The failure probability and dispersion in the drift demand were found to be the same for the frames modeled with CMOB and standard concrete (natural sand); the results demonstrate that CMOB samples can be safely used for earthquake‐resistant constructions.

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Investigation on the flexural behaviour of high-performance reinforced concrete beams using sandstone aggregates

Cited by 37 publications

References 13 publications

Flexural Behavior of Reinforced High-Performance Concrete Beams Made with Steel Slag Coarse Aggregate

Flexural Behavior of Reinforced High-Performance Concrete Beams Made with Steel Slag Coarse Aggregate

Survey of the current status of sustainable concrete production in the U.S.

Variability of coal mine overburden incorporated concrete and its effect on the seismic safety of reinforced concrete building

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