This study investigated six wall composition material substitutes employed in constructing Egypt's Ibny Baitak Project for their potential environmental impact. Clay brick (20 cm), cement brick (20 cm), and autoclaved aerated concrete (AAC) (20 cm) blocks were the four materials evaluated. Each wall material is reinforced with (4 cm extruded polystyrene (XPS) insulation in the fourth, fifth, and sixth scenarios. The study used a life cycle assessment (LCA) technique to assess the environmental impact of these products from cradle to gate, including raw material extraction, processing, and transportation,The outcomes showed that the environmental effects of the four materials varied greatly regarding the three impact categories of potential global warming, non-renewable energy use, and respiratory pollution. Regarding the midpoint result, the AAC ranked second by 1.49 pt, followed by the cement bricks by 2.25 pt, with the clay brick recording the lowest environmental effect. The environmental impacts in the three final scenarios increased by 1.24 pt, 1.86 pt, and 2.55 pt, and an incremental rate of 13% when the XPS was added to the three wall types. The 20 cm cement brick recorded the highest value, 8.40K [KG Co]_2e, and the 4 cm XPS + 20 cm cement brick composition recorded the lowest value, 1.97K [KG Co]_2e. When considering the endpoint results, the cement brick recorded the highest values by 8.40K [KG Co]_2e, which show climate change has the most significant impacts. Regarding the resource's depletion impact, cement bricks recorded the highest values with 138.42K Mj primay.

Insulation materials are essential for minimizing energy use, enhancing thermal comfort, and minimizing greenhouse gas emissions in buildings. However, the insulation materials sector may have a considerable environmental impact. This study adopts a life cycle assessment (LCA) methodology to compare the environmental impact of four widely used insulation materials; extruded polystyrene, expanded polystyrene, rock wool, and glass wool. Without considering the use and end-of-life disposal stages, the LCA approach assesses the environmental impact of insulation materials from the cradle to the gate, including raw material extraction, production, and transportation. The study analyzes the Ibny Baitak project in New Assiut City as a case study to apply the LCA of insulation materials scenario and calculate their environmental impact.Extruded polystyrene, rock wool, and glass wool have the lowest environmental impact, according to the study's findings, while expanded polystyrene is the most harmful. Concerning the midpoint result, the XPS has recorded 4.35[kgco]_2 e and the EPS has pointed to 3.96[kgco]_2 e. As for the endpoint result, the XPS insulation material has recorded the highest adverse impact compared to other materials by 1.61 mt. The EPS came in the second rank by 1.24 mt, then the rock wool by 0.55 mt, and finally, the glass wool by 0.33 mt.The results imply that a building's environmental effect over its lifetime can be considerably impacted by the material used for insulation. The study's findings can help architects, engineers, and construction professionals choose the best insulation for energy-efficient buildings.

The building material industry has the largest share in global environmental emissions. In this study, the life cycle assessment (LCA) of polymeric concrete has been conducted and compared to conventional concrete to evaluate its environmental impact and identify areas for improvement for the construction of a new clinic at Assiut University Hospital in Egypt. The LCA was conducted (using SimaPro V9.5) from cradle to gate, including raw material extraction, transportation, and production.The LCA results showed that polymeric concrete had a lower environmental impact than conventional concrete regarding global warming, acidification, and eutrophication potential. In terms of the single score outcomes, climate change had a significant impact on both ordinary and polymer concrete, with the former scoring 0.90 mPt and the latter recording a much lower 0.14 mPt, indicating a 75% reduction. Furthermore, when considering the weighting results (midpoint result), it was found that specific environmental impacts, such as global warming, respiratory inorganic, and non-renewable energy impacts, had a more significant effect overall. Specifically, the global warming potential was found to be 8.95 Kg CO_2 eq. and 1.38 Kg CO_2 eq. for polymer and ordinary concrete, respectively. Lastly, the endpoint result showed that human health was impacted the most, with a total reduction of 84.24%. The DALY recorded for ordinary concrete was 3.69E-06, whereas, for polymer concrete, it was 5.8E-07.The findings of this study suggest that polymeric concrete can be a more sustainable alternative to conventional concrete for specific applications.

This study presents a novel method for selecting irrigation canals for rehabilitation based on implementation priorities. The method integrates factors such as canal condition, water demand, environmental considerations, and socioeconomic aspects to identify canals that require immediate attention. The study outlines a step-by-step process and discusses its potential benefits in guiding decision-making for effective canal rehabilitation programs. The methodology explores beneficiaries’ satisfaction with their canal performance and applies the “project execution priority index” concept to the network of understudy irrigation canals. Results show that only one of the 11 canals with the highest priority was rehabilitated, while five were executed despite being included in the second priority. Three canals were implemented, and these canals deserve the third priority, indicating the success of the “Project Execution Priority Index” concept in prioritizing field implementation processes. This approach can guide decision-making for effective canal rehabilitation programs and improve the current situation.