Properties of concrete containing Guar gum

Radvand, Tara; Toufigh, Vahab

doi:10.1080/19648189.2020.1767217

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…The fluidity of the cement mixtures decreased as the percentage of gum Arabic in the mixture increased, and the values were significantly reduced at the lower dosages, whereas at the higher dosages, a slight decrease in fluidity was observed, which is consistent with the results presented in the previous research conducted on the use of gum Arabic in cementitious composites [38,39]. The rise in fluidity at lower Gum Arabic concentrations illustrates the particle-bridging capacity of the Gum Arabic with cement particles and other powder components, thus decreasing the fluidity of the mixes.…”

Section: Fluidity and Bleedingsupporting

confidence: 91%

Effect of adsorption interactions of Arabic gum with cement

Neme

2024

Mater. Res. Express

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This study seeks to investigate the influence of cement and Arabic gum on the physico-mechanical and microstructural properties of cementitious composites. The influence of varying quantities of Arabic gum on the hydration, fluidity, mechanical performance and microstructure of cement paste was investigated. The influence of Arabic gum on slant shear performance and capillary water absorption was also investigated. The results indicate that the workability of cement was diminished as a result of the ability of Arabic gum to make the cement paste cohesive. It is evident that when the gum Arabic concentration increases from 147 to 174 mm, the resultant slump value for various w/b ratios drops. The adsorption characteristics showed that for a 15 mg/g dosage at 60, 45, 30, and 15 minutes, respectively, 1.43, 1.32, 1.25, and 1.03 mg/g are achieved. For 1% gum Arabic substitution, the highest flexural strength percentage growth is achieved at 38.46%, 23.74%, and 17.29% at 7, 14, and 28 days, respectively. In addition, the inclusion of Arabic gum improved the slant shear strength of cement composite, making it ideal for use as a building repair material with significant application potential. Experiments on the bonding behavior of the produced cementitious composite with the old mortar reveal that the shear bond strength was greatly increased, demonstrating the compatibility between the old and new cement composites. The microstructure and the porosity of the cement matrix also showed denser and compact matrix making them durable to attain better service life.

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Section: Fluidity and Bleedingsupporting

confidence: 91%