Effect of natural zeolite on water distribution and migration in low water/binder cement-based composites (LW/B-CC) mixed with seawater: An experimental and computational investigation

Yu, Rui; Wang, Z.Y.; Sun, Meijuan; Yu, Zechuan; Dong, Enlai; Fan, Dian

doi:10.1016/j.conbuildmat.2023.131242

Cited by 3 publications

(1 citation statement)

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“…Researchers who investigated these properties [3] point out that zeolite enhances fresh concrete properties by reducing the bleeding and segregation; however, the replacement of 10% or a higher amount of cement resulted in a lower slump of the paste or higher superplasticizer demand in order to maintain the same workability properties. Similar findings were reported by other authors [4], who believe that zeolite increases water demand, and more superplasticiser is required to control the workability properties. They state that absorption properties of zeolite have a negative effect on the consistency of the mix and accelerate the initial and final setting time.…”

Section: Introductionsupporting

confidence: 91%

Complex Effect of Portland Cement Modified with Natural Zeolite and Ground Glass Mixture on Durability Properties of Concrete

Kriptavičius,

Girskas,

Ivanauskas

et al. 2023

Buildings

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This article analyses the combined effect of a mixture of natural zeolite and ground soda lime silicate glass on the durability properties of concrete. The specimens were prepared by replacing 25% of the cement with a mixture of zeolite and glass at different proportions with zeolite particles of two different sizes and cured for 28 and 90 days. Chloride migration, the depth of water penetration under pressure, and freeze–thaw cycle tests were performed, and compressive strength was determined. The combined effect of the mixture on the composition and microstructure of the cement matrix was studied by analysing the results of XRD, TGA, SEM-BSE, and porosity tests. The test results showed that irrespective of the cement “dilution” effect, the mixture of additives had a beneficial combined effect: increased durability of concrete, a denser structure of the cement matrix, the formation of calcium aluminate hydrates, faster rate, and higher degree of hydration.

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Section: Introductionsupporting

confidence: 91%