Contribution to thermal study of modified cement pastes based on siliceous SCMs

Arroudj, Karima; Oudjit, Mohamed Nadjib; Hamou, Arezki Tagnit

doi:10.1504/ijmmp.2019.099227

Cited by 1 publication

(1 citation statement)

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“…The flexural strength of various RCC mixtures kept increasing after 90 days of curing and recorded the increasing percentage 15.66, 23.63, 9.34, 13.46, and 3.85%, respectively, when compared with the reference mix at 90 day of curing. The presence of pozzolanic activity of these powders may be responsible for the increase in flexural strength, which react with the Ca(OH)2 produced from cement hydration, this reaction produces more (C-S-H: gel), which will fill the pores in the RCC mixture and dense the cement structure, and improve the mechanical properties of the hardened RCC, moreover to the effect of the filling pores of powders (Arroudj et al, 2017, Ramezanianpour et al, 2010. On other hand, the RCC mixtures with 10% glass powder (G10) had flexural strength that were a decreased as compared to the reference RCC mixture by -1.75%, and -6.04% at 28 days and 90 days, respectively, due to the particle filling effects.…”

Section: Flexural Strength Resultsmentioning

confidence: 99%

Investigation of the Ability of Producing Eco-Friendly Roller Compacted Concrete Using Waste Material

Tarrad,

Abbas

2023

J. Ecol. Eng.

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The major objective of the experimental lab investigation was to produce eco-friendly sustainable roller compacted concrete (RCC) by reducing cement content once using demolition waste material. The best method of disposing of waste demolition without needing for a sanitary landfill was by accumulating, crushing and then blending to a high fineness powder, followed by using it in materials such as clay bricks, marble tiles, and glass windows. Six RCC mixtures with partial cement weight replacements of 5%, and 10% were made in addition to the reference mixture.To investigate the strength (compressive, flexural and tensile splitting strength), porosity, water absorption, and density were all tested after the production of mixtures. The results of the study indicate that the RCC containing 10% of clay bricks powder enhances the strength of RCC up to 14.78%, 17.96%, and 12.87% for compressive, tensile, flexural, respectively, at 28-days of curing compared to the reference mixture, followed by the mixture containing 10% of marble tiles powder with percentage increase up to 7.12%, 14.44%, and 7.02%. While the glass windows with 5% can be adopted, the results close to reference mixture with slight improvement equal to 0.68%, 2.11%, and 3.22%, and slight reduction when using 10% replacement of cement weight, were obtained.

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Section: Flexural Strength Resultsmentioning

confidence: 99%