Multi-modified effects of varying admixtures on the mechanical properties of pervious concrete based on optimum design of gradation and cement-aggregate ratio

Dai, Zhen; Li, Hui; Zhao, Weiqiang; Wang, Xiangping; Wang, Hanbing; Zhou, Haonan; Yang, Bing

doi:10.1016/j.conbuildmat.2019.117178

Cited by 39 publications

(14 citation statements)

References 33 publications

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“…According to size distributions of all concrete constituents, when CQWT was used, there were insufficient stone powders. Moreover, the amount of coarse grains was 19.5%, resulting in rather coarser aggregates, which may be disadvantageous for mechanical strength of concrete 26–28 . Therefore, the compressive strength of concrete with CQWT was lower than that of concrete with natural sand.…”

Section: Resultsmentioning

confidence: 99%

Gradation effect of cleaned quarry waste to improve size distributions of concrete constituents

Gao

Xue

et al. 2020

Structural Concrete

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A specially designed cleaning system was adopted to wash away mud but keep coarse particles and stone powders in quarry waste. Then the cleaned quarry waste was used as concrete fine aggregate. Size distributions of all concrete constituents were analyzed, and workability and compressive strength of concrete were determined to evaluate gradation effect of cleaned quarry waste to improve size distributions of concrete constituents, thus improving concrete properties. Results showed that the designed cleaning system can wash away mud and keep stone powders and coarse particles in quarry waste. The particle sizes of stone powders were between 0.075 mm and 0.15 mm, and those of coarse particles were between 0.15 mm and 4.75 mm. When the cleaned quarry waste was used, continuous size distributions of all concrete constituents were formed, which solved discontinuous size distribution problems among cement, fine, and coarse aggregates. Therefore, concrete workability was improved and compressive strengths at different ages were increased.

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Section: Resultsmentioning

confidence: 99%

Gradation effect of cleaned quarry waste to improve size distributions of concrete constituents

Gao

Xue

et al. 2020

Structural Concrete

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“…Várias pesquisas fizeram uso de mais de um tipo de resíduo (TOGHROLI et al, 2020;LU et al, 2019;CHANG et al, 2016;CHEN et al, 2019;OPISO;SUPREMO;PERODES, 2019;LI;LIU, 2017;DAI et al, 2020). Na classificação "Outros" (Quadro 1) são citados estudos que avaliam resíduos encontrados em não mais que um artigo.…”

Section: Resultsunclassified

Concreto Permeável Com Incorporação De Resíduos: Uma Revisão

Moura

Pinheiro²,

Röhden³

2020

R. Est. ambient.

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O aproveitamento de resíduos no concreto permeável pode reduzir a poluição ambiental assim como contribuir para a diminuição do consumo de matéria prima virgem e da disposição final de resíduos. Neste estudo de revisão analisou-se o resultado de pesquisas sobre concreto permeável com incorporação de resíduos como agregados ou finos. Os artigos selecionados foram buscados em periódicos científicos da base de dados do Science Direct e Scielo entre o ano de 2013 e 2020. A busca resultou em 69 estudos que avaliaram a incorporação de resíduos no concreto permeável. Observou-se predomínio do uso de resíduos da construção civil compostos por concreto, argamassas, blocos e revestimentos cerâmicos. A influência da incorporação de resíduo nas propriedades físicas, mecânicas e hidráulicas do concreto permeável foi analisada, revelando que os melhores resultados são obtidos quando os resíduos são incorporados no concreto permeável como finos.

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“…It simulates the behavior of beetles, which can use the two antennae to randomly explore nearby areas and transform them into a higher concentration of odor. e performance of the BAS algorithm has been evaluated in various applications [39,40]. Figure 3 gives the work chart of the BAS algorithm.…”

Section: Beetle Antennae Search (Bas)mentioning

confidence: 99%

“…Generally, the reasonable water-cement ratio (W/C) of pervious concrete ranges from 0.29 to 0.33, and 0.3 was determined in the present study for the mixing [7]. ree possible C/A values (0.22, 0.24, and 0.26) were chosen to determine their effects on water permeability, based on the results of previous studies conducted [18,39,40]. After stirring and weighing, the mixture of pervious concrete was poured into a cylindrical mold with a diameter of 100 mm and a thickness of 50 mm to obtain samples for permeability testing.…”

Section: Design and Sample Preparationmentioning

confidence: 99%

Predicting the Permeability of Pervious Concrete Based on the Beetle Antennae Search Algorithm and Random Forest Model

Huang

Duan

Zhang

et al. 2020

Advances in Civil Engineering

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Pervious concrete is an environmentally friendly material that improves water permeability, skid resistance, and sound absorption characteristics. Permeability is the most important functional performance for the pervious concrete while limited studies have been conducted to predict permeability based on mix-design parameters. This study proposed a method to combine the beetle antennae search (BAS) and random forest (RF) algorithm to predict the permeability of pervious concrete. Based on the 36 samples designed in the laboratory and 4 key influencing variables, the permeability of pervious concrete can be obtained by varying mix-design parameters by RF. BAS algorithm was used to tune the hyperparameters of RF, which were then verified by the so-called 10-fold cross-validation. Furthermore, the model to combine the BAS and RF was validated by the correlation parameters. The results showed that the hyperparameters of RF can be tuned by the BAS efficiently; the BAS can combine the conventional RF algorithm to construct the evolved model to predict the permeability of pervious concrete; the cement/aggregate ratio was the most significant variable to determine the permeability, followed by the coarse aggregate proportions.

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Multi-modified effects of varying admixtures on the mechanical properties of pervious concrete based on optimum design of gradation and cement-aggregate ratio

Cited by 39 publications

References 33 publications

Gradation effect of cleaned quarry waste to improve size distributions of concrete constituents

Gradation effect of cleaned quarry waste to improve size distributions of concrete constituents

Concreto Permeável Com Incorporação De Resíduos: Uma Revisão

Predicting the Permeability of Pervious Concrete Based on the Beetle Antennae Search Algorithm and Random Forest Model

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