Utilisation of coarse glass powder as pozzolanic cement—A mix design investigation

Kalakada, Zameer; Doh, Jeung‐Hwan; Zi, Goangseup

doi:10.1016/j.conbuildmat.2019.117916

Cited by 38 publications

(21 citation statements)

References 46 publications

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“…Kupwade-Patil [32] showed the effectiveness of volcanic ash in replacing part of the cement. Kalakada [33] further concluded that the best ratio of pozzolanic ash to cement was 30%, at which the strength and impermeability of concrete products were improved. In recent years, fly ash, used as a pozzolanic material, has attracted much research interest.…”

Section: Introductionmentioning

confidence: 98%

Influences of High-Sulphur Fly Ash on the Properties of Lightweight Cement-Treated Materials Subjected to Sulphate Corrosion

et al. 2020

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In this study, the effects of high-sulphur fly ash on the properties of lightweight cement-treated materials (LCMs) immersed in sodium sulphate solutions were studied. The unconfined compressive strength of LCMs corroded by sulphate was tested. The microscopic properties were characterised by X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). The results show that high-sulphur fly ash has an adverse effect on the structural strength of LCMs after corrosion, but when the content of fly ash is less than 75%, the effect of fly ash on the strength is small. A small amount of high-sulphur fly ash can improve the density of the material structure; the internal pore structure of LCMs provides space for the growth of ettringite and other corrosive substances and relieves the expansion pressure. LCMs mixed with high-sulphur fly ash have a certain resistance to sodium sulphate corrosion.

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Section: Introductionmentioning

confidence: 98%

Influences of High-Sulphur Fly Ash on the Properties of Lightweight Cement-Treated Materials Subjected to Sulphate Corrosion

et al. 2020

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“…Mining of natural river sand causes changes in the direction of river flows and alters hydrological strata and river bed levels [20]. In addition to cement production, concrete casting requires substantial energy, consumes natural limestone, and is responsible for 5-7% of the world's total carbon dioxide emissions [21][22][23][24][25][26]. Therefore, research on the appropriate and sustainable substitutions of natural and conventional ingredients in concrete is essential.…”

Section: Introductionmentioning

confidence: 99%

Roles of Waste Glass and the Effect of Process Parameters on the Properties of Sustainable Cement and Geopolymer Concrete—A State-of-the-Art Review

et al. 2021

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Recent research has revealed the promising potential of using waste glass (WG) as a binder or inert filler in cement and geopolymer concrete to deliver economic and environmental benefits to the construction sector. However, the outcomes obtained by different research groups are scattered and difficult to compare directly because of isolated process parameters. In this study, the roles and impacts of WG and process parameters on the performance of WG-added cement and geopolymer concrete are critically reviewed. This study reveals that the chemical and mineralogical composition, and particle size of WG, mix proportion, activation, and curing condition of concrete are the most important parameters that affect the dissolution behavior of WG and chemical reactivity between WG and other elements in concrete; consequently, these show impacts on properties of concrete and optimum WG level for various applications. These parameters are required to be optimized based on the guidelines for high pozzolanicity and less alkali–silica reactivity of WG in concrete. This review provides a critical discussion and guidelines on these parameters and the chemistry of WG in cement and geopolymer concrete for best practice and highlights the current challenges with future research directions.

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“…Although lowering W/CM can decrease the long-term shrinkage, it will cause an increase in the autogenous shrinkage and thus short-term shrinkage. 89 Then, although partial replacement of cement could decrease the carbon footprint of concrete, [90][91][92] it is not clear if it is beneficial to the overall strength-and-shrinkage limits of concrete. To study the effect of filler replacement of partial cement, two representative factors expressed as the ratio of 28-day compressive strength to respectively the 28-and 91-day shrinkages were presented in Table 4 (Note the concrete specimens have been arranged by their W/CM instead of by Group number) for all concrete specimens alongside with their obtained compressive strength and shrinkages.…”

Section: Interdependence Of Shrinkage Cpv and Wpdmentioning

confidence: 99%

Shrinkage, cementitious paste volume, and wet packing density of concrete

Lai

Binhowimal

Griffith

et al. 2020

Structural Concrete

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Shrinkage of concrete refers to the volumetric change of concrete due to cement hydration (i.e., self-desiccation) and environmental drying (i.e., water evaporation). It creates dimensional instability and induces tensile stress when the concrete is restrained that may be large enough to cause cracking. The most fundamental way to mitigate concrete shrinkage is to decrease the shrinkage of cementitious paste in the mix design. Some major factors of concrete mix design affecting the shrinkage include water-to-cementitious material (W/CM) ratio, dosage of superplasticizer (SP), concrete strength, and cementitious paste volume (CPV). While the effects of concrete strength and CPV on shrinkage are straightforward, those of W/CM and SP are more complicated because they also affect the pore size and distribution that influence the moisture movement. In this paper, it is advocated to study the concrete shrinkage by its wet packing density (WPD). Considering that the shrinkage of concrete is associated with the moisture movement in capillary pores and that the WPD accounts for the void ratio in fresh concrete, it will be shown in this paper that the shrinkage can be correlated negatively to the WPD with the consideration of CPV. The paper thus provides a new insight to the interdependence amongst shrinkage, CPV, and WPD of concrete.

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Utilisation of coarse glass powder as pozzolanic cement—A mix design investigation

Cited by 38 publications

References 46 publications

Influences of High-Sulphur Fly Ash on the Properties of Lightweight Cement-Treated Materials Subjected to Sulphate Corrosion

Influences of High-Sulphur Fly Ash on the Properties of Lightweight Cement-Treated Materials Subjected to Sulphate Corrosion

Roles of Waste Glass and the Effect of Process Parameters on the Properties of Sustainable Cement and Geopolymer Concrete—A State-of-the-Art Review

Shrinkage, cementitious paste volume, and wet packing density of concrete

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