Micro-structural and interfacial transition zone investigation on oil palm shell lightweight concrete

Krishnamurthy, Muthumani; Nadh, V. Swamy

doi:10.1504/ijmmp.2019.102222

Cited by 4 publications

(3 citation statements)

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“…It was due to the absorbed water in the fresh mixture of SCC by the fine grain of PSA's large surface area. This behavior followed the analysis results that stated the increased the water absorption rate of concrete that contained palm shells [23]. In the SCC mixtures with the same PSA percentages of 0% and 10%, the increment of the w/b ratio resulted in greater slump diameters.…”

Section: Slump Testsupporting

confidence: 81%

Influence of Steam Curing Temperature on the Characteristic of Self-Compacting Concrete Incorporating Palm Shell Ash

Nurjannah,

Muliawan,

Nurazizah

et al. 2024

Cantilever

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Self-Compacting Concrete (SCC) is proven as durable concrete and applied to constructions. In this paper, a study was conducted to analyze the influence of variations of steam curing temperature (SCT) and water/binder (w/b) ratio on the characteristics of SCC incorporating 10% Palm Shell Ash (PSA) as a partial substitution for cement mass. The SCT was arranged from 25 C to 80 C. The variation of w/b in the compositions of SCC was 0.325, 0.350, and 0.375. The results showed that using PSA, the variation of SCT and the w/b ratio influenced the workability of the fresh concrete. The PSA, SCT, and the w/b ratio affected the concrete compressive strength and mass density. The increased SCT caused a lighter density and greater compressive strength. However, the decreased compressive strength occurred due to an excessive SCT of 70 C and above. The SCT of 60 C, 10% PSA, and w/b ratio of 0.350 in the mixture produced the greatest compressive strength of 36.27 MPa at 28 days of age, while without SCT, the greatest compressive strength of 36.78 MPa was achieved at the age of 28 days containing 10% PSA and w/b ratio of 0.325. It indicated that the w/b ratio was more influential than the SCT on the increase of the SCC compressive strength.

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Section: Slump Testsupporting

confidence: 81%

Influence of Steam Curing Temperature on the Characteristic of Self-Compacting Concrete Incorporating Palm Shell Ash

Nurjannah,

Muliawan,

Nurazizah

et al. 2024

Cantilever

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“…To examine the performance infilled concrete in the CFST stub column under axial compressive loading, various research works carried out the experiment with different mixes with a constant cement content or with industrial byproducts and w/c ratio, which were mixed with industrial by-products such as steel slag, fly ash, silica fume, and lightweight aggregate [20][21][22][23][24]. ey are examined with the FE model and Euro code 4. e results explain that despite the use of various types of aggregates, all CFST columns behavior was reasonably well.…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Mechanical Behavior of Silica Fume Concrete Filled with Steel Tubular Composite Column

Sharma

Umadevi

Sampath

et al. 2021

Advances in Materials Science and Engineering

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Recycling or utilization of industrial waste is becoming more popular as people become more environmentally conscious. Silica fume is a by-product of the smelting process in the silicon and ferrosilicon industries. This study examines the mechanical behavior of steel tubular composite column filled with conventional concrete and silica fume concrete experimentally under axial compressive loading. For the study, variability in steel tube thickness and column height with a constant diameter are considered. To explore the influence of silica fume in concrete, microstructural analyses are carried out by SEM, XRD, and FTIR. The experimental results reveal that the use of silica fume as a replacement of cement is feasible; the silica fume concrete-filled steel tubular (SCFST) column has marginal enhancement strength capacity compared to CFST column as thickness increases.

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“…To develop the presented approaches for predicting the UCS of OPSC, a category of data set, including 174 experimental tests collected from the published literature, 8,13,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] was employed. Four basic materials of concrete are fine and coarse aggregate, water, and cement, where coarse aggregate is OPS in this paper.…”

Section: Data Set Descriptionmentioning

confidence: 99%

Predicting the uniaxial compressive strength of oil palm shell lightweight aggregate concrete using artificial intelligence‐based algorithms

Zhu

Huang

Mao

et al. 2021

Structural Concrete

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Because natural coarse aggregates were depleting rapidly, concrete industry has been trended toward substitute aggregates from industrial by-products or waste. One of the waste materials is oil palm ash (OPS), which is widely generated in the processing of palm oil in the tropics. Concretes made with OPS to estimate the compressive strength (CS) is cost and time consuming. This study aims to propose novel hybrid models by concepts of extreme gradient boosting (XGB) model optimized with different optimization algorithms such as sinecosine algorithm, multiverse optimization algorithm (MVO), and particle swarm optimization for predicting the uniaxial CS (UCS) of oil palm shell lightweight aggregate concrete (OPS). Also, the multivariate adaptive regression spline model is also developed to present a meaningful relationship between input and output variables. To this aim, a data set containing data samples for concrete made with OPS was gathered from the published literature. Results show that all models have acceptable performance in predicting the UCS, representing the admissible correlation between observed and predicted values and models' robustness. In the training step, the value of R 2 , the root mean square error, and the variance accounted factor for MVO-XGB are 0.9713, 1.5777, and 97.129. These values in testing phase are 0.9019, 2.6786, and 89.158. Therefore, the MVO-XGB model outperforms others, and the results demonstrate the ability of the MVO algorithm to determine the optimal value of XGB parameters.

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Micro-structural and interfacial transition zone investigation on oil palm shell lightweight concrete

Cited by 4 publications

References 0 publications

Influence of Steam Curing Temperature on the Characteristic of Self-Compacting Concrete Incorporating Palm Shell Ash

Influence of Steam Curing Temperature on the Characteristic of Self-Compacting Concrete Incorporating Palm Shell Ash

[Retracted] Mechanical Behavior of Silica Fume Concrete Filled with Steel Tubular Composite Column

Predicting the uniaxial compressive strength of oil palm shell lightweight aggregate concrete using artificial intelligence‐based algorithms

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