Cement-Based Concrete Modified with Vitellaria Paradoxa Ash: A Lifecycle Assessment

Oyebisi, Solomon; Alomayri, Thamer; Owamah, H.I.; Olutoge, Festus

doi:10.2139/ssrn.4002321

Cited by 1 publication

(1 citation statement)

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“…However, along with the production of cementitious materials, concerns have been growing with the large consumption of energy and adverse environmental impacts, especially those connected with global warming and climate change. According to the reports [2]- [5], around 7 % of the world's emissions of artificial carbon oxide (CO2) are generated for the manufacture of Portland cement (PC); 67 to 70 % of energy consumption during concrete production is ascribed to PC and almost 14 % of the world's total energy from the industrial sector is consumed. To produce one ton of PC, nearly 0.82 to 1.0 metric tons of CO2 is emitted into the surroundings [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Mechanical Properties of Green Lightweight Cement Composite Modified by Nano Additives

Du,

Korjakins

2023

Environmental and Climate Technologies

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Cement materials have been commonly used in the building and construction industries. However, the process of cement manufacture has long been connected with high consumption of energy and adverse environmental impacts. In this study, in order to produce innovative green cement material that consumes lower energy, resources and is more eco-friendly, industrial waste by-product fly ash cenosphere (FAC) has been utilized as lightweight aggregate to replace cement by 73.3 %. Most research regarding lightweight cement materials with FAC has mainly paid attention to the influence of FAC and the reinforcement via fibre materials, but very few studies have been devoted to the incorporation of nano additives. Therefore, 0.05 %, 0.15 %, 0.45 % of carbon nanotubes (CNTs) and 0.2 %, and 1.0 % of nano silica (NS) were used to modify lightweight cement composite (LWCC). Experiments including flexural strength test, compressive strength test, and thermogravimetric analysis were performed to evaluate the mechanical behaviours and the hydration process of the produced LWCC. Based on the experimental outcomes, incorporating CNTs and NS can effectively contribute to enhancing both flexural and compressive strength, and facilitate cement hydration reaction.

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Section: Introductionmentioning

confidence: 99%