Experimental Study on Cementitious Property of Pumice

Liu, Jing; Lv, Xing Jun; Cao, Ming; Cui, Shi Cai

doi:10.4028/www.scientific.net/amm.99-100.773

Cited by 4 publications

(2 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, using more, or coarser, pumicite in concrete mixtures may also lead to reduced heat of hydration and compressive strength along with increased setting time and water demand as well as improved ASR resistance and sulfate resistance [46,47]. Another study [48] found that the use of pumicite alone (without catalysts such as sodium silicate and potassium fluoride) showed limited pozzolanic activity.…”

Section: Natural Pozzolanmentioning

confidence: 99%

A Locally Available Natural Pozzolan as a Supplementary Cementitious Material in Portland Cement Concrete

Mousavinezhad,

Garcia,

Toledo

et al. 2023

Buildings

View full text Add to dashboard Cite

For several decades, class F fly ash has been an attractive supplementary cementitious material, at least in part, due to its ability to reduce Portland cement consumption and mitigate alkali-silica reactions in concrete. However, fly ash availability is becoming uncertain as the energy industry decommissions coal burning power plants as it transitions to renewable energy production. This situation creates a need to identify viable and sustainable alternative supplementary cementitious materials. There are several types of supplementary cementitious materials, such as natural pozzolans, metakaolin, or ground granulated blast-furnace slag, which appear to be potential alternatives to fly ash in concrete. In this research, a locally available natural pozzolan (pumicite) was selected to replace fly ash in concrete. After conducting alkali-silica reaction tests on mortar mixtures, rheological and strength properties, shrinkage, resistance to freezing and thawing, and chloride ion permeability of concrete mixtures containing different amounts of fly ash and natural pozzolan were evaluated. The results showed that pumicite was more effective than fly ash at mitigating the alkali-silica reaction, and a pumicite content of 20% was necessary to mitigate the alkali-silica reaction. Ternary mixtures containing both pumicite and fly ash were the most effective cementitious materials combinations for mitigating the alkali-silica reaction expansion. Additionally, pumicite provided acceptable compressive strength and modulus of rupture values (greater than 4.0 MPa) that exceeded the flexural strengths provided by established mixtures containing only fly ash. Shrinkage and durability factor values for all mixtures were less than 710 μstrain and greater than 75, which are generally considered acceptable. Additionally, all mixtures with acceptable alkali-silica reaction expansions had very low chloride permeability. These results indicate that pumicite can be a reliable alternative for fly ash.

show abstract

Section: Natural Pozzolanmentioning

confidence: 99%

A Locally Available Natural Pozzolan as a Supplementary Cementitious Material in Portland Cement Concrete

Mousavinezhad,

Garcia,

Toledo

et al. 2023

Buildings

View full text Add to dashboard Cite

show abstract

“…A research study by Kabay et al [6] investigated the effect of the partial replacement of pumice and fly ash with cement on the mechanical-physical and durability properties of concrete in Turkey. Liu et al's research [7] investigated pumice-replaced cement's compressive strength and SEM morphologies. Planetary and ball mills are used for grinding the pumice, where smaller particle size increases the specific surface area.…”

Section: Introductionmentioning

confidence: 99%

Relation between Scale-Up and Life Cycle Assessment for Wet Grinding Process of Pumice

Mannheim

Kruszelnicka

2023

Energies

View full text Add to dashboard Cite

This study examines the grinding process of pumice based on the dry and wet laboratory measurements, scale-up method, and life cycle assessment. This research’s main goal was to set up the relation between scale-up and life cycle assessment results for the wet grinding process with the help of mathematical equations. Within the first research works, basic grinding testing in a laboratory dry Bond mill was accomplished. This step allowed the description of the estimated particle size distribution, median particle size, specific grinding work, and grindability index number of pumice. The second step was the determination of power consumption and scale-up in a laboratory stirred media mill, and it involved the assessment of resources, primary energies, and environmental impacts of wet grinding using GaBi 8.0 software. According to the results, we obtain life cycle emission factors by introducing five coefficients for grinding in laboratory and industrial conditions. These constants depend on the external dimensions of the mill and can be expressed by a derived scale constant from the scale-up. Research results enable the industry to make a prognosis for industrial plants based on the integration between life cycle assessment and scale-up of the pilot grinding processes.

show abstract

Reaction, structure and properties of eco-friendly geopolymer cement derived from mechanically activated pumice

Szabó

Kristály

Nagy

et al. 2023

Ceramics International

View full text Add to dashboard Cite

Experimental Study on Cementitious Property of Pumice

Cited by 4 publications

References 2 publications

A Locally Available Natural Pozzolan as a Supplementary Cementitious Material in Portland Cement Concrete

A Locally Available Natural Pozzolan as a Supplementary Cementitious Material in Portland Cement Concrete

Relation between Scale-Up and Life Cycle Assessment for Wet Grinding Process of Pumice

Reaction, structure and properties of eco-friendly geopolymer cement derived from mechanically activated pumice

Contact Info

Product

Resources

About