Effects of Using Green Concrete Materials on the CO2 Emissions of the Residential Building Sector in Egypt

Marey, Heba; Kozma, Gábor; Szabó, György

doi:10.3390/su14063592

Cited by 25 publications

(14 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Jonkute et al 23 analyzed the carbon dioxide emission of residential buildings in Lithuania, through the energy performance certification. A similar study in Egypt can be found in Marey et al 24 . Luo et al 25 studied the carbon emission for the renovation of old residential areas through a life cycle assessment.…”

Section: Literature Reviewsupporting

confidence: 80%

System based greenhouse emission analysis of off-site prefabrication: a comparative study of residential projects

Guo

Shi

Yan

et al. 2023

Sci Rep

View full text Add to dashboard Cite

High-story residential structures and off-site prefabrication have been dominant choices in the construction industry. There is a substantial quantity of greenhouse gas (GHG) emissions produced by the construction industry. In fact, the construction industry is responsible for 30 percent of all GHG emissions. In this study, we analyse the differences between the conventional technique of building and the off-site prefabricating construction method. First, we evaluate the emissions emitted from key processes during the off-site prefabricating construction. In addition, we analyse the qualitative and quantitative differences between two prefabrication structural systems, namely concrete and steel, which are the two most common structural systems utilised in residential construction projects in China. We examine and analyse four different case studies in order to exemplify the proposed methodology and offer managerial insights.

show abstract

Section: Literature Reviewsupporting

confidence: 80%

System based greenhouse emission analysis of off-site prefabrication: a comparative study of residential projects

Guo

Shi

Yan

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Due to the high content of lignin, its strength and resistance to decay are much better than that of straw, husks, sawdust and others. In addition, the walnut shell has the lowest water absorption among the listed materials [ 20 ]. Analyzing the above, we can confidently say that the walnut shell is a potentially interesting material for use as a partial replacement for coarse mineral aggregate in concrete.…”

Section: Introductionmentioning

confidence: 99%

Effect of Walnut-Shell Additive on the Structure and Characteristics of Concrete

et al. 2023

View full text Add to dashboard Cite

The partial replacement of the mineral components of concrete with natural renewable analogues in full possession of the performance characteristics of the final material, allows not only the concrete-production process to be made more environmentally friendly and inexpensive, but also to solve an important task for the agricultural industry, which is that associated with waste disposal. The scientific novelty of the work is in the obtaining of new concrete compositions by the partial replacement of coarse aggregate with a natural analogue in the form of a walnut shell, which has the maximum ratio of the strength of the composite to its density, as well as in identifying new dependencies of strength and density and their ratio on the amount of replacement of mineral coarse-aggregate walnut shell. The main goal of this article was to analyze the effect of composition factors on characteristics of concrete with partial replacement of large aggregates with walnut shells and to search for the optimal compound that would make it possible to obtain concrete with a minimum decrease in strength characteristics with a maximum decrease in concrete density. Cubes and prism laboratory samples were made from concrete of normal density with the replacement of coarse aggregate by 5, 10, 15, 20, 25 and 30%, by volume. The main mechanical properties, such as density, strength (compressive, tensile, tensile strength in bending) of the concrete samples were studied. The investigation used standard methods and scanning electron microscopy. An increase into strength characteristics up to 3.5%, as well as the maximum ratio of strength to density of concrete, was observed at a walnut-shell dosage of 5%. Effective partial replacement of coarse aggregate with walnut shells leads to a reduction in the consumption of crushed stone by up to 10% and a decrease in the mass of concrete by up to 6%.

show abstract

“…Tere was a huge availability of volcanic scoria in lots of countries, but its low value and the pressure towards greater sustainable construction have ended in renewed interest in volcanic scoria as natural pozzolan for concrete. Te use of locally available cementing alternatives to produce green concrete has the advantage of the cost of concrete production in construction [17][18][19][20][21][22][23]. Natural volcanic scoria materials have been investigated in some parts of the world for their potential use as binding alternatives, fne aggregates, and coarse aggregates, and had been found to enhance some of the engineering properties of paste, mortar, and concrete.…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Scoria as a Cementitious Material for Green Concrete Production

Ayene

Geremew

Amenu

2023

Advances in Civil Engineering

View full text Add to dashboard Cite

The demand for cement, which is one of the key components of concrete, is high in Ethiopia, but it is the most expensive and environmentally unfriendly construction material. Due to the increasing concerns about the environment worldwide, researchers have started looking for other resources that can be used to reduce the pollution caused by the cement industry. One of the most effective ways to reduce the pollution caused by the cement industry is by using volcanic scoria powder as a partial replacement for cement in concrete production. Scoria is a locally available natural volcanic material in Ethiopia, especially around the rift valley regions. This natural resource can also be used to reduce energy consumption and the cost of production of cement. To investigate this study, nonprobability sampling techniques were adopted to collect samples from the study area. A differing proportion of scoria powder was considered as a partial replacement of cement after analyzing its characteristics, and its effect on the fresh and mechanical properties of hardened concrete was examined. The test results on the characteristics of scoria revealed that the material is suitable to be used as a supplementary cementitious material in concrete production; hence, its main constituents SiO2 + Al2O3 + Fe2O3 are higher than 70% as per ASTM C618. As the content of scoria powder replacement in cement is increased, it reduces the slump of freshly mixed concrete properties. The hardened concrete specimens made with 10%, 20%, and 30% partial replacement of cement with scoria achieved the specified minimum strength after 28 days of curing time. But concrete specimens made with 40% scoria content do not satisfy the minimum specified concrete strength even after 90 days. The significant strength achievement in scoria blended concrete specimens occurred when moving from 56 to 90 days of curing with 10% replacements. However, in reference specimens, this was observed during 28 days of curing times. The findings of this investigation revealed that scoria powder could replace cement by 30% for the production of normal concrete and it also has the potential to protect the environment from carbon dioxide emissions. These findings satisfy the basic strategy of green concrete production in worldwide.

show abstract

Effects of Using Green Concrete Materials on the CO2 Emissions of the Residential Building Sector in Egypt

Cited by 25 publications

References 42 publications

System based greenhouse emission analysis of off-site prefabrication: a comparative study of residential projects

System based greenhouse emission analysis of off-site prefabrication: a comparative study of residential projects

Effect of Walnut-Shell Additive on the Structure and Characteristics of Concrete

Potential Use of Scoria as a Cementitious Material for Green Concrete Production

Contact Info

Product

Resources

About