Knowledge Tree
Portland cement
Also known as: OPC, Portland cement, ordinary Portland cement
Facts (10)
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Recent breakthroughs in the valorization of lignocellulosic biomass ... pubs.rsc.org Jun 7, 2025 10 facts
claimAlkali-activated slag (AAS) and limestone calcined clay cement (LC3) produce lower carbon emissions during production and offer superior resistance to chloride penetration and water permeation compared to ordinary portland cement (OPC), resulting in lower maintenance and repair requirements.
referenceAl-Ghamdi authored the paper 'The Sustainability of Partial and Total Replacement of Ordinary Portland Cement: A Deep Dive into Different Concrete Mixtures through Life Cycle Assessment,' published in the Journal of Building Engineering in 2025 (DOI: 10.1016/j.jobe.2025.112830).
claimTaheri et al. prepared a composite using cellulose nanofibrils (CNF) and ordinary Portland cement (OPC) in various proportions, finding that short CNF fibers improved mechanical properties, while long and entangled fibers reduced the density and thermal conductivity of the composite.
claimHempcrete possesses high density (600–1000 kg m−3), low thermal conductivity, acoustic insulation, vapour permeability, low energy demands, and CO2 adsorbing capacity, making it a potential replacement for regular Portland cement.
referenceR. Kaminskas, V. Cesnauskas, and R. Kubiliute studied the influence of different artificial additives on Portland cement hydration and hardening in a 2015 paper published in Construction and Building Materials.
claimSbahieh et al. conducted a study on concrete sustainability by substituting ordinary portland cement (OPC) with Supplementary Cementitious Materials (SCMs) such as fly ash, silica fume, metakaolin, and ground granulated blast furnace slag (GGBS), as well as using geopolymer concrete.
referenceBiomass fly ash can be used as a high-volume replacement for Portland cement in sustainable mortars, as analyzed by Černý in a 2024 study published in the Journal of Building Engineering.
claimTaheri et al. observed that homogeneity and the degree of entanglement between fibers are significant factors in defining the mechanical, thermal, and chemical properties of cellulose nanofibril and ordinary Portland cement composites.
perspectiveSupplementary Cementitious Materials (SCMs) are currently considered a better alternative to ordinary portland cement (OPC) for reducing CO2 emissions, though geopolymer concrete could be more sustainable if its environmental challenges are addressed.
claimHeat treatment at 200 °C enables cement composites reinforced with lignin extracted from sugarcane bagasse to exhibit properties similar to regular Portland cement.