Simple and Resistant Construction Built with Concrete Voussoirs for Developing Countries

Pomares, Juan Carlos; González, Alejandro del Valle; Saura, P.

doi:10.1061/(asce)co.1943-7862.0001532

Cited by 12 publications

(16 citation statements)

References 5 publications

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“…At the same time, it provides a theoretical basis for the recycling unit to make the best choice in the context of the new era. We believe that with the proposal of some advanced technologies [80,81] and the development of remanufacturing models, the harm inflicted on the construction industry will be greatly reduced.…”

Section: Discussionmentioning

confidence: 99%

Research on the Evolutionary Game of Construction and Demolition Waste (CDW) Recycling Units’ Green Behavior, Considering Remanufacturing Capability

Huang

Dai

et al. 2021

IJERPH

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At present, China has not yet formed an effective development model for the industrialization of construction waste. The level of construction waste treatment and resource utilization is still low, and recycled products also lack market competitiveness. In order to promote the effective development of the remanufactured construction and demolition waste supply chain better, and based on the present situation, this manuscript establishes a game model for recycling units in two different situations: with and without remanufacturing capabilities. However, most existing studies have determined that all recycling units have remanufacturing capabilities. In the first situation, the main players of the game are recycling units with remanufacturing capabilities and consumers. In the second situation, the main players of the game are recycling units without remanufacturing capabilities and the third-party remanufacturer with remanufacturing ability. Therefore, our research can ascertain the optimal strategy choices of both parties in the game under different return situations and discuss the impact of changes to related parameters through numerical simulations. The results show: (1) When the recycling unit has remanufacturing capabilities, corporate leadership and government supervision rate have positive effects on its evolution to strict manufacturing. Only a high supervision rate can effectively suppress the negative impact of speculative gains and drive the system to (strict manufacturing; positive). Furthermore, the higher the supervision rate, the faster the system will converge. Then, the consumer’s payment difference coefficient has a negative effect on the evolution of the recycling unit to strict manufacturing. The larger the payment difference coefficient, the faster the system will converge to a stable state (tendency to formal manufacturing; negative). (2) When the recycling unit does not have the ability to remanufacture, the government cost subsidy rate and the recycling unit’s effort profit coefficient have positive effects on the recycling unit’s evolution to the direction of effort. Meanwhile, the larger the profit coefficient of the recovery unit’s effort, the faster the system will converge. The conclusions obtained provide certain theoretical guidance for the decision making of CDW recycling supply chain recovery units and relevant government departments.

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Section: Discussionmentioning

confidence: 99%

Research on the Evolutionary Game of Construction and Demolition Waste (CDW) Recycling Units’ Green Behavior, Considering Remanufacturing Capability

Huang

Dai

et al. 2021

IJERPH

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“…In addition, the strength development rate of concrete was higher at lower temperatures. Further, future studies should be conducted on securing the demolding time of the formwork using environmentally friendly materials [37,38] and the corrosion resistance according to the SO 3 content [39].…”

Section: Discussionmentioning

confidence: 99%

“…The formwork removal time was shortened as the temperature increased, and 330HFS_ePC and 330EP exhibited almost similar formwork removal times. Further, future studies should be conducted on securing the demolding time of the formwork using environmentally friendly materials [37,38] and the corrosion resistance according to the SO3 content [39].…”

Section: Comparison Of Escape Time For Vetical Form Removalmentioning

confidence: 99%

Effect of Formwork Removal Time Reduction on Construction Productivity Improvement by Mix Design of Early Strength Concrete

Lee

Kim

et al. 2020

Applied Sciences

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In this study, we examined the effects of cement fineness, SO3 content, an accelerating agent, and chemical admixtures mixed with unit weights of cement on concrete early strength using concrete mixtures. C24 (characteristic value of concrete, 24 MPa) was used in the experiment conducted. Ordinary Portland cement (OPC), high fineness and SO3 OPC (HFS_OPC), and Early Portland cement (EPC) were selected as the study materials. The unit weights of cement were set to OPC 330, 350, and 380. Further, a concrete mixture was prepared with a triethanolamine (TEA)-based chemical admixture to HFS. A raw material analysis was conducted, and the compressive strength, temperature history, and maturity (D∙h) were examined. Then, the vertical formwork removal time was evaluated according to the criterion of each country. Finally, the time required to develop concrete strength of 5 MPa was estimated. Results showed that the early strength of concrete mixed with HFS and EPC was greater than that exhibited by concrete with an increased unit weight of cement with OPC. In addition, when HFS was used with EPC, its strength developed early, similar to the trend exhibited by EPC, even at low temperatures.

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“…Introduce incentives for sustainable building owners [23] Consider sunspaces, trombe walls (a trombe wall is an outer-face insulated wall facing the equator, painted in a dark color to absorb thermal energy), or other techniques to store heat during winter Consider the regulation of KM and MUDL Use strategies in the design phase to optimize the use of solar panels and solar water heaters Conduct energy audit of buildings…”

Section: Energymentioning

confidence: 99%

Post-2000 Building Industry in Kabul City from Sustainability Perspective

et al. 2021

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Buildings are one of the major consumers of energy and producers of greenhouse gases globally. Reducing energy consumption and greenhouse gas emissions from buildings helps decrease global warming and enhances the natural environment. This can only happen by transitioning from traditional to sustainable architecture and urban planning. For decades, sustainable architecture and urban planning have been applied in many countries’ building sectors, but others among the poor and least developed countries are left behind. Kabul, the capital of one of the least developed countries, Afghanistan, has experienced a remarkable growth rate in population and building since 2001. This rapid and uncontrolled growth of building construction caused problems from different perspectives, especially from the sustainability perspective. In this paper, the current state of the building industry in Kabul is evaluated from a sustainability perspective, especially those constructed after the year 2000. This assessment helps to rate and see how sustainable each type of building is. Analysis of the collected data clarifies that buildings’ sustainability level in Kabul city is significantly low. Based on the results, recommendations provide a better future for the building industry and ensure that existing and future buildings are sufficiently sustainable to protect the environment of Kabul city and of the globe.

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Simple and Resistant Construction Built with Concrete Voussoirs for Developing Countries

Cited by 12 publications

References 5 publications

Research on the Evolutionary Game of Construction and Demolition Waste (CDW) Recycling Units’ Green Behavior, Considering Remanufacturing Capability

Research on the Evolutionary Game of Construction and Demolition Waste (CDW) Recycling Units’ Green Behavior, Considering Remanufacturing Capability

Effect of Formwork Removal Time Reduction on Construction Productivity Improvement by Mix Design of Early Strength Concrete

Post-2000 Building Industry in Kabul City from Sustainability Perspective

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