Properties of self-compacting mortars using blends of limestone powder, fly ash, and zeolite powder

Faheem, Abdul; Rizwan, Syed; Bier, Thomas

doi:10.1016/j.conbuildmat.2021.122788

Cited by 29 publications

(5 citation statements)

References 50 publications

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“…The use of natural zeolites together with limestone powder as substitutes for cement in self-compacting mortar resulted in a higher dosage of water-reducing admixture coupled with longer times for the mortar to reach spread diameters of 250 mm and 300 mm [15]. The study concluded that the combined use of zeolites with limestone powder in equal parts, at a constant water/cement ratio of 0.42 and a similar water/binder ratio of 0.336, resulted in overall better characteristics of self-compacting mortar than all other blends of supplementary cementitious materials investigated in the study.…”

Section: Fresh-state Propertiesmentioning

confidence: 99%

“…According to a recent study, the use of zeolites blended with other supplementary cementitious materials, at water/binder ratios lower than 0.45, resulted in improved values of mechanical properties [15]. The TGA analysis showed that blending limestone powder with natural zeolites resulted in better hydration compared to the control mix, although the cement content was lower.…”

Section: Mortarmentioning

confidence: 99%

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The Use of Natural Zeolites in Cement-Based Construction Materials—A State of the Art Review

Alexa-Stratulat,

Olteanu,

Toma

et al. 2023

Coatings

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Natural zeolite is a honeycomb-structured aluminosilicate mineral with an open crystalline structure which makes it suitable for a variety of applications. Given the beneficial effects of zeolites on the properties of cementitious materials, the present paper aims to summarize the recent findings reported in the scientific literature on the use of zeolites in cement-based construction materials. This paper limits the analysis to natural zeolites. The influence of natural zeolites on the workability and setting time of cement-based construction materials revealed that increasing the zeolite content led to a reduction in workability compared to the control mixes. At the same time, the initial and final setting times of cement pastes showed a decreasing trend with an increase in the replacement percentage. The slow pozzolanic reaction of clinoptilolite zeolite results in lower flexural strength and compressive strength values of mortars at the age of 28 days. Blending zeolites with other supplementary cementitious materials resulted in improved values of the mechanical properties of mortar and concrete. The findings regarding the impact of zeolite on the durability of concrete suggest that zeolite shows promise as a viable alternative to cement, with positive effects on various aspects of durability. The majority of the durability factors are interconnected. The presence of conflicting findings is particularly significant in this context, highlighting the need for a comprehensive approach to address these challenges in the future.

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Section: Fresh-state Propertiesmentioning

confidence: 99%

Section: Mortarmentioning

confidence: 99%

The Use of Natural Zeolites in Cement-Based Construction Materials—A State of the Art Review

Alexa-Stratulat,

Olteanu,

Toma

et al. 2023

Coatings

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“…In this period, the PCS-R specimen significantly exceeded the mechanical strength of the remaining analysed samples. Many authors point out that, in mortars prepared with specific proportions of pozzolanic materials, the increase in mechanical strength tends to be both slower and more effective than in cement mortars without these additions [25][26][27][28].…”

Section: Chemical Analysis Of Pozzolanicity (Pt) At 8 and 15 Daysmentioning

confidence: 99%

A New Study on the Eastern Flank of the Loma Blanca Deposit (Cuba) to Establish the Mineralogical, Chemical, and Pozzolanic Properties of Zeolitised Tuffs

et al. 2022

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The geological nature of the territory of the Republic of Cuba has favoured the formation of large and varied deposits of volcanic tuffs enriched by various species of zeolites. Today, new zeolite deposits continue to be discovered in the country. This work aims to present the results of a study carried out in an unexplored area that is located approximately 1.2 km east of the Loma Blanca deposit, outside the mining operation limits. To carry out this research and to establish a qualitative comparison between both sample populations, four samples were taken from the study area, and another four were taken from the Loma Blanca deposit. The characterisation of the samples was performed by XRD, SEM, and XRF. The pozzolan quality was determined by the pozzolanicity test (PT) and quality chemical analysis (QCA). Finally, a study of the mechanical strength (MST) was performed at 7, 28, and 90 days, using mortar specimens made with PC/ZT: 75–25% and PC/ZT: 70–30%, respectively. The results of the studies using XRD, SEM, and XRF indicated that both groups of samples had a similar complex mineralogical composition, consisting mainly of mordenite and clinoptilolite accompanied by secondary phases such as quartz and amorphous materials in the form of altered glass. The pozzolanicity test showed that both the samples from the study area and those from the Loma Blanca deposit behaved like typical pozzolans, which is a trend that can be seen in the high values of mechanical strength to compression up to 72 MPa for the PC/ZT: 75–25% formulation and 66 MPa for the PC/ZT: 70–30%. The results obtained establish that the zeolite varieties detected in the study area are similar to those of the Loma Blanca deposit, which could have a positive impact on the increase in current reserves, especially for manufacturing pozzolanic cements with properties that contribute to the preservation of the environment.

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“…Such materials are often used for cement and concrete production, and they contribute to the significant decrease in the required amount of lime and cement, leading to the improved mechanical properties of structural materials. A large number of works throughout the literature have reported on the enhancement of the performance of cementitious materials (e.g., concretes, cements, mortars) [61][62][63][64][65][66][67] and also of highway materials such as pavements and asphalts [68][69][70] based on pozzolanic replacements, which can also be considered as cost-effective because of their durability against sulphate and acidic actions [71,72].…”

Section: Introductionmentioning

confidence: 99%

Effect of Lime Stabilization and Partial Clinoptilolite Zeolite Replacement on the Behavior of a Silt-Sized Low-Plasticity Soil Subjected to Freezing–Thawing Cycles

et al. 2021

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Soil stabilization, through either physical or chemical techniques of coating-cementation development, is a commonly adopted practice in geotechnical and transportation engineering projects used to strengthen soils and mitigate negative geo-environmental impacts. This can be particularly important in enhancing the mechanical properties of soils which are prone to degradation of their response because of freezing and thawing actions. It was attempted in this research study to examine the effect of lime–zeolite stabilization on the behavior of a silt-sized natural soil of low plasticity, by performing standard compaction tests as well as unconfined compressive experiments evaluating the strength of the composite samples. The natural soil mixed with various contents of lime and zeolite partial replacement was subjected to consecutive freezing and thawing cycles. The results from the study showed significant improvement of the mechanical performance of the treated soil when mixed with lime partially replaced with zeolite in terms of strength and durability and, based on scanning electron microscopic images, additional insights were attempted to be obtained on the microstructure of the specimens subjected to temperature changes.

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Properties of self-compacting mortars using blends of limestone powder, fly ash, and zeolite powder

Cited by 29 publications

References 50 publications

The Use of Natural Zeolites in Cement-Based Construction Materials—A State of the Art Review

The Use of Natural Zeolites in Cement-Based Construction Materials—A State of the Art Review

A New Study on the Eastern Flank of the Loma Blanca Deposit (Cuba) to Establish the Mineralogical, Chemical, and Pozzolanic Properties of Zeolitised Tuffs

Effect of Lime Stabilization and Partial Clinoptilolite Zeolite Replacement on the Behavior of a Silt-Sized Low-Plasticity Soil Subjected to Freezing–Thawing Cycles

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