Experimental study on high volume fly ash concrete made with coir pith and quarry dust

Oorkalan, A.; Chithra, S.; Balaji, R.; Kumar, Sujit; Kumar, Jalaj; Kumar, T. Kishzore

doi:10.1016/j.matpr.2019.07.588

Cited by 13 publications

(3 citation statements)

References 2 publications

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“…The ow value kept on decreasing with an increase in the ratio of the CP aggregates in the RPC mixes. The decrease in the ow value is attributed to the higher quantities of water absorbed by the porous CP aggregates [Oorkalan et al 2020b]. The extra water required to attain the required slump ow of 200 ± 5 mm also increased as the CP aggregate replacement ratio increased.…”

Section: Fluiditymentioning

confidence: 98%

Investigation on the Properties of Sustainable Reactive Powder Concrete by Utilization of Coir Pith Aggregates and Pyrogenic Silica

Oorkalan¹,

Chithra²

2021

Preprint

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The present study investigates the properties of RPC developed using low cost eco-friendly materials such as pyrogenic silica (PS) and coir pith (CP) fine aggregates. This study investigates the effects of PS as silica fume replacement which is the main constituent for the production of reactive powder concrete which contained coir pith as a fine aggregate replacement instead of quartz sand up to 25%. The use of silica fume increases the particle packing density of RPC but increases the shrinkage phenomenon in RPC due to the minimum w/b ratio adopted. Therefore, in this research PS is used as a partial substitute for SF up to 30% and its effect on the mechanical and durability properties of coir pith containing RPC is studied. The test results showed that the mechanical strength values decreased with an increase in the addition of CP aggregate beyond 5% whereas the decrement in compressive strength was partially reduced when PS is used as silica fume replacement up to a maximum of 30%. The chloride penetration resistance was also improved with increasing PS substitution in RPC containing CP aggregates. The autogenous shrinkage and drying shrinkage were also significantly reduced due to the internal curing ability of the CP aggregates in combination with PS. The development of dense CSH gels from hydration is also evident from low CaO/ SiO2 ratio obtained from the EDS analysis. Hence the combination of PS with CP aggregates can reduce the shrinkage characteristics of RPC thereby providing eco-friendly sustainable concrete at low cost.

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Section: Fluiditymentioning

confidence: 98%

Investigation on the Properties of Sustainable Reactive Powder Concrete by Utilization of Coir Pith Aggregates and Pyrogenic Silica

Oorkalan¹,

Chithra²

2021

Preprint

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“…3.2.1. Workability Despite the variation in the effect of stone dust on concrete workability due to the different physical characteristics of SD found in the various mining companies around the globe, such as angularity, fineness modulus, morphology, specific surface area, and specific mass, most of the research results [8,87,90,[94][95][96]100,[102][103][104][107][108][109][110]121] conclude that the higher the level of substitution of stone dust, the higher the content of fines and thus the greater specific surface area, leading to lower workability of concrete in the fresh state. Also, according to data from these publications, the workability of fresh concrete made with stone dust replacing natural sand as fine aggregate suffers a reduction in comparison with reference concrete (with 0% replacement).…”

Section: How Does Stone Dustmentioning

confidence: 99%

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

et al. 2023

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The escalating demand for natural resources within the construction industry is progressing upward. At the same time, however, there is a great concern regarding the depletion of these resources. This review paper emphasizes the significance of utilizing alternative aggregate materials in concrete. Particularly, it aims to explore replacing natural sand with stone dust. On the one hand, the depletion of primary sources of natural sand worldwide, combined with environmental and ecological concerns, drives the adoption of alternative aggregate materials for sustainable concrete construction. On the other hand, stone dust, a waste from the quarrying industry, offers a cost-effective and practical solution for producing concrete. This article presents a comprehensive literature review of the main trends in utilizing stone dust in recycled aggregates in the past decade and its influence on concrete properties. It addresses critical research questions regarding the physical and chemical properties of stone dust aggregates compared to natural sand; the impact of stone dust on the workability, mechanical, physical, and durability properties of recycled concrete; and the potential reduction of environmental impacts in terms of energy consumption and emissions through the replacement of natural sand with stone dust. Ultimately, this paper proposes future investigative work based on identified research gaps.

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“…Every year a massive amount of industrial waste or by-products accumulate all around the world. These discarded materials can be recycled not only for compensating the lack of natural resources but also for conserving the environment [ 3 ]. Crushed stone dust (CSD) is such an industrial by-product generated in a bulk amount during the process of rock blasting and screening of coarse aggregates [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Prediction and optimization of properties of concrete containing crushed stone dust and nylon fiber using response surface methodology

Mita¹,

Ray²,

Haque³

et al. 2023

Heliyon

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Experimental study on high volume fly ash concrete made with coir pith and quarry dust

Cited by 13 publications

References 2 publications

Investigation on the Properties of Sustainable Reactive Powder Concrete by Utilization of Coir Pith Aggregates and Pyrogenic Silica

Investigation on the Properties of Sustainable Reactive Powder Concrete by Utilization of Coir Pith Aggregates and Pyrogenic Silica

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

Prediction and optimization of properties of concrete containing crushed stone dust and nylon fiber using response surface methodology

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