Knowledge Tree
cementitious composites
Also known as: cementitious composites, cement composites
Facts (18)
Sources
Recent breakthroughs in the valorization of lignocellulosic biomass ... pubs.rsc.org Jun 7, 2025 18 facts
claimMai et al. found that bleaching cellulose fibers used in cement composites increases mechanical properties, with the exception of fracture toughness.
claimHeating cellulose nanocrystals (CNC) in cement composites enhances their internal curing potential by dissolving unreacted particles, which generates a denser, more interconnected structure and reduces microcracks compared to seal-cured samples.
claimBiomass fly ash performs similarly to or better than coal fly ash in cement composites, with similar calcium consumption rates.
measurementCement composites reinforced with lignin extracted from sugarcane bagasse exhibit thermal stability up to 450 °C, as revealed by DSC studies.
referenceA. J. Klemm and P. Klemmt investigated the effects of alternate freezing and thawing cycles on the pore structure of cementitious composites modified by MHEC (Methyl Hydroxyethyl Cellulose) and PVA (Polyvinyl Alcohol) in a 1997 paper published in Building and Environment.
referenceA. Ismail et al. developed an organic-inorganic hybrid microcapsule of phase change materials for thermal energy storage in cementitious composites, as published in Construction and Building Materials (2024).
claimCork can be utilized in the construction industry for applications including vibration damping, Volatile Organic Compounds (VOC) adsorption, sandwich panels, plastic composites, insulation corkboards, and cement composites.
measurementBakula et al. reported that the use of autoclaved cellulose fiber in cement composites resulted in a 25% increase in bending strength and nearly a 100% increase in bending toughness.
measurementFahim et al. observed that the application of alkali-activated cellulose nanocrystals (CNC) in cement composites resulted in a 35% reduction of extrusion pressure, a maximum 20% increment in mechanical properties, and a 25% increase in the degree of hydration.
referenceC. O. Thomas, R. C. Thomas, M. Asce, and K. C. Hover studied the use of wastepaper fibres in cementitious composites in a 1987 paper published in the Journal of Environmental Engineering.
claimBentur et al. found that accelerated aging of cement composites in high CO2 concentrations leads to an increase in flexural strength and E-modulus due to carbonation of the matrix, while accelerated aging in normal environmental conditions deteriorates the material and decreases toughness.
claimCement composites reinforced with 0–4 wt% of lignin extracted from slash pine showed improvements in fracture energy, modulus of rupture, lower water absorption capabilities, and dimensional stability.
procedureKilic et al. assessed the buildability and printability of cement composites using a 3D-concrete printer equipped with a screw pump mechanism and a 10 mm diameter nozzle.
measurementKilic et al. determined that a 0.3 wt% concentration of cellulose nanofibrils (CNF) provides desirable rheological and mechanical properties for cement composites.
claimKlemm et al. demonstrated that modifying cement composites with a mixture of methyl hydroxy ethyl cellulose (MHEC) and polyvinyl alcohol (PVA) improves concrete longevity by retaining water and enhancing adhesion, allowing the material to withstand adverse weather conditions.
claimLignin is used as a water-reducing agent in cement composites.
claimHeat treatment at 200 °C enables cement composites reinforced with lignin extracted from sugarcane bagasse to exhibit properties similar to regular Portland cement.
claimSilica and silicates have applications in the fabrication of semiconductors, insulators, cement composites, glass, and tiles due to their catenation property and porous structure.