Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete

Prabhu, Ganapathy Ganesh; Arjunan, A.; Samundeeswari, R.; Sivanantham, Panneerselvam Arum; Arokiaraj, G Vimal; Panneerselvam, Mukesh; Panneerselvam, Balamurugan; Sivakumar, Vivek; Bidorn, Butsawan

doi:10.1016/j.jmrt.2023.04.029

Cited by 16 publications

(5 citation statements)

References 40 publications

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“…In subsequent experiments, it is necessary to improve the reactivity of fly ash to enhance its hydration utilization rate and to fully utilize the alkali-reducing effect of fly ash. The study by Ganapathy et al [37] on the effects of fly ash and silica fume on the pH of vegetation porous concrete also corroborates this point.…”

Section: Analysis Of Ph Valuementioning

confidence: 55%

Study on the Performance Optimization of Plant-Growing Ecological Concrete

Zhuang,

Yan,

Wang

et al. 2024

Sustainability

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The response surface regression model of plant-growing ecological concrete is established based on the factors of the water–binder ratio, fly ash content, and design porosity, with 28-day compressive strength, connectivity porosity, and pH value as response variables. Based on optimizing the mix proportion with the regression model, different dosages of acetic acid are used as excitation agents to increase the compressive strength and reduce the alkalinity of plant-growing ecological concrete to enhance its service life and vegetation performance. The results show that the compressive strength of plant-growing ecological concrete with a water–binder ratio of 0.3, a fly ash content of 26%, and a design porosity of 22% was 10.32 MPa, the connectivity porosity was 20.00%, and the pH value was 11. After the addition of acetic acid at 0.4% of the mass of the cementitious material, the compressive strength increased by 40.29%, and the pH value decreased by 6.33%. This study proposes a cost-effective means and provides data support for the engineering application of plant-growing ecological concrete.

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Section: Analysis Of Ph Valuementioning

confidence: 55%

Study on the Performance Optimization of Plant-Growing Ecological Concrete

Zhuang,

Yan,

Wang

et al. 2024

Sustainability

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“…In recent years, vegetation lightweight porous concrete (VLPC) has emerged as an innovative integration of traditional concrete technology with the advantages of horticulture [ 1 , 2 ]. VLPC boasts a considerable pore volume and a distinctive pore structure [ 3 , 4 , 5 , 6 ], resulting in enhanced water permeability [ 7 ], efficient heat dissipation capacity [ 8 ], and notable sound absorption capability [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Properties of Vegetation Lightweight Porous Concrete

Cao,

Zhou,

et al. 2024

Materials

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The objective of this study is to formulate vegetated light porous concrete (VLPC) through the utilization of various cementing materials, the design of porosity, and the incorporation of mineral additives. Subsequently, the study aims to assess and analyze key properties, including the bulk density, permeability coefficient, mechanical characteristics, and alkalinity. The findings indicate a linear decrease in the volume weight of VLPC as the designed porosity increases. While higher design porosity elevates the permeability coefficient, the measured effective porosity closely aligns with the design values. The examined VLPC exhibits a peak compressive strength of 17.7 MPa and a maximum bending strength of 2.1 MPa after 28 days. Notably, an escalation in porosity corresponds to a decrease in both the compressive and the bending strength of VLPC. Introducing mineral additives, particularly silicon powder, is shown to be effective in enhancing the strength of VLPC. Furthermore, substituting slag sulfonate cement for ordinary cement significantly diminishes the alkalinity of VLPC, resulting in a pH below 8.5 at 28 days. Mineral additives also contribute to a reduction in the pH of concrete. Among them, silica fume, fly ash, fly ash + slag powder, and slag powder exhibit a progressively enhanced alkaline reduction effect.

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“…Metakaolin in highstrength concrete, replacing cement (5%-15%), achieves optimal results at 5%, enhanced by PVA and PAA. The main outcome of the research there is a lack of research with the SCC with self-curing concrete incorporating the recycled flyash concrete [32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Optimizing flow, strength, and durability in high-strength self-compacting and self-curing concrete utilizing lightweight aggregates

Kadhar,

Gopal,

Sivakumar

et al. 2024

Matéria (Rio J.)

Self Cite

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This comprehensive study undertaken to investigate the properties and performance of M60 grade selfcompacting and self-curing concrete mix designs. The research involved an in-depth analysis of various concrete compositions labeled as M1 to M16, each with specific aggregate combinations and percentages. The primary focus was on assessing critical properties such as flow-ability, mechanical, durability and micro structural properties. The mix labeled as M6, featuring a balanced incorporation of fine aggregate alternatives (FAA) and natural coarse aggregates (NCA), exhibited noteworthy behavior in terms of the evaluated properties. This indicated the potential advantages of judiciously combining different types of aggregates to achieve desired concrete characteristics. The research underscored the critical role of aggregate selection and substitution in determining the overall durability, strength, and structural performance of M60 grade concrete. These findings contribute to an improved understanding of optimizing concrete mix designs for achieving enhanced mechanical properties, micro structural and long-term structural sustainability. The mix M12 is more superior compared to all the mix in the form of fresh concrete properties, mechanical properties and durability properties of concrete. This study's outcomes have implications for the construction industry, offering valuable insights into formulating concrete blends tailored for specific structural requirements and desired performance outcomes.

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Effects of fly ash and silica fume on alkalinity, strength and planting characteristics of vegetation porous concrete

Cited by 16 publications

References 40 publications

Study on the Performance Optimization of Plant-Growing Ecological Concrete

Study on the Performance Optimization of Plant-Growing Ecological Concrete

Study on the Preparation and Properties of Vegetation Lightweight Porous Concrete

Optimizing flow, strength, and durability in high-strength self-compacting and self-curing concrete utilizing lightweight aggregates

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