Retraction: To evaluate the performance of waste marble powder and wheat straw ash in steel fiber reinforced concrete

Zaid, Osama; Aslam, Fahid; Alabduljabbar, Hisham

doi:10.1002/suco.202100736

Cited by 14 publications

(8 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduction in mechanical performance could be because of the smooth texture and highly irregular shape, 86 which prevents the positive influence of WG pore filling ability. 87,88 This decreases the adhesive property between cement paste and WG. The reduction in compressive strength is 89 because of the formation of voids, which may have been advanced because of the surplus fine properties of WG.…”

Section: Compressive Strengthmentioning

confidence: 99%

Evaluating the influence of fly ash and waste glass on the characteristics of coconut fibers reinforced concrete

Aslam

Zaid

Althoey

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

The disposal of waste from coal plants and waste glass (WG) is causing significant environmental problems all around the planet. Currently, the amount of discarding of these wastes is increased. One possible option is to utilize fly ash (FA) from coal plants as a partial substitute for the cement and EG as a fractional substitute for sand in concrete, respectively. Besides, fibers can improve the strength and durability of concrete; explicitly speaking, using coconut fibers (CFs) is in trend due to their highest toughness among natural fibers making it suitable material as fiber reinforcement in concrete. This research studies the concrete behavior with 15% FA as a partial substitute of cement with 2% CFs and waste beverage glass as sand at various replacement levels (14%, 15%, 16%, 17%, 18%, 19%, and 20%). Mechanical and durability characteristics of concrete were assessed, such as compression strength, water absorption, flexural strength, density, workability, and water absorption. The current study results show that adding FA, CFs, and WG improved microstructure quality at 16% replacement of sand. The study showed that the M4 mix has enhanced the properties of concrete samples as compressive and flexural strength was improved to 47.2 and 6.2 MPa and improved apparent density by 20%. Adding more WGP than the optimal proportion (16%) led to detrimental effects on void ratio, permeability, and water absorption. Therefore, 16% of sand with WG and 15% of FA with cement can be substituted with 2% CFs to develop sustainable concrete.

show abstract

Section: Compressive Strengthmentioning

confidence: 99%

Evaluating the influence of fly ash and waste glass on the characteristics of coconut fibers reinforced concrete

Aslam

Zaid

Althoey

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…Recent advances in concrete material research have paved the road for alternative materials as long-term replacements for traditional ones [ 22 , 23 , 24 , 25 ]. Using recycled aggregates in self-compacting concrete is the first and most sustainable revolution to counteract such problems.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Prediction of Compressive Strength of Self-Compacting Recycled Aggregate Concrete Utilizing Novel Computational Approaches

de‐Prado‐Gil

Palencia

Jagadesh³

et al. 2022

Materials

View full text Add to dashboard Cite

A considerable amount of discarded building materials are produced each year worldwide, resulting in ecosystem degradation. Self-compacting concrete (SCC) has 60–70% coarse and fine particles in its composition, so replacing this material with another waste material, such as recycled aggregate (RA), reduces the cost of SCC. This study compares novel Artificial Neural Network algorithm techniques—Levenberg–Marquardt (LM), Bayesian regularization (BR), and Scaled Conjugate Gradient Backpropagation (SCGB)—to estimate the 28-day compressive strength (f’c) of SCC with RA. A total of 515 samples were collected from various published papers, randomly splitting into training, validation, and testing with percentages of 70, 10 and 20. Two statistical indicators, correlation coefficient (R) and mean squared error (MSE), were used to assess the models; the greater the R and lower the MSE, the more accurate the algorithm. The findings demonstrate the higher accuracy of the three models. The best result is achieved by BR (R = 0.91 and MSE = 43.755), while the accuracy of LM is nearly the same (R = 0.90 and MSE = 48.14). LM processes the network in a much shorter time than BR. As a result, LM and BR are the best models in forecasting the 28 days f’c of SCC having RA. The sensitivity analysis showed that cement (28.39%) and water (23.47%) are the most critical variables for predicting the 28-day compressive strength of SCC with RA, while coarse aggregate contributes the least (9.23%).

show abstract

“…In the first of these datasets, studies in which the fine aggregates were partially replaced with waste marble powder in the concrete mixture were compiled [15,18,19,22,24,27,[33][34][35][36][37][38][39][40]. In the second, studies that adopted the waste fine marble aggregate in replacement for the conventional fine aggregate were compiled [21,23,28,41,42].…”

Section: Compilation and Properties Of Datasetsmentioning

confidence: 99%

Effects of Waste Powder, Fine and Coarse Marble Aggregates on Concrete Compressive Strength

et al. 2022

View full text Add to dashboard Cite

The use of marble wastes in concrete mixtures, causing air and water pollution, has been promoted in the academic and practical spheres of the construction industry. Although the effects of various forms (powder, fine, coarse and mixed) of this waste on the concrete compressive strength has been subject to a decent number of studies in the literature, the difficulties in reaching specific conclusions on the effect of each test parameter constitute a major restraint for the proliferation of the use of marble wastes in the concrete industry. Most of these studies are far from underscoring all of the parameters affecting the concrete compressive strength. Due to the urgent need in the literature for comprehensive studies on concrete mixtures with marble wastes, the results of the axial compression tests on a total of 429 concrete mixtures with marble aggregates were compiled by paying special attention to reporting all test variables (form and content of marble wastes, water–cement ratio, cement content, proportion of coarse and fine aggregates in all aggregates) affecting the concrete strength. In this context, multivariate regression analyses were carried out on the existing test results. These regression analyses yielded to relationships between the change in concrete compressive strength and the test parameters for each and every form of marble waste (powder, fine and coarse aggregate). The study indicated that independent from the form of marble wastes (as powder, fine aggregate or coarse aggregate), aggregate replacements of up to 50% can yield to significant changes in the concrete compressive strength. In addition, the analytical estimates from the developed equations exhibited a high correlation (a least r value of 0.91) with the experimental results from the previous studies, yielding to rather low error values (RMSE value is 5.06 MPa at max). For this reason, the developed equations can consistently predict the changes in concrete compressive strength with varying amounts and forms of the marble aggregates as well as the other test variables.

show abstract

Retraction: To evaluate the performance of waste marble powder and wheat straw ash in steel fiber reinforced concrete

Cited by 14 publications

References 56 publications

Evaluating the influence of fly ash and waste glass on the characteristics of coconut fibers reinforced concrete

Evaluating the influence of fly ash and waste glass on the characteristics of coconut fibers reinforced concrete

A Study on the Prediction of Compressive Strength of Self-Compacting Recycled Aggregate Concrete Utilizing Novel Computational Approaches

Effects of Waste Powder, Fine and Coarse Marble Aggregates on Concrete Compressive Strength

Contact Info

Product

Resources

About