A new apartment construction technology with effective CO2 emission reduction capabilities

Hong, Won‐Kee; Kim, Jin-Min; Park, Seon-Chee; Lee, Seung-Geun; Kim, Seung‐Il; Yoon, Ki-Joon; Kim, Hee-Cheul; Kim, Jeong Tai

doi:10.1016/j.energy.2009.05.036

Cited by 40 publications

(36 citation statements)

References 4 publications

(3 reference statements)

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“…The quantity of cast-inplace concrete was calculated to be 1,923.54 m 3 for the existing Green Frame and 1,888.49 m 3 for the enhanced one. This is because twice as much grouting of the part connecting the columns is required for the enhanced Green Frame compared to the existing one.…”

Section: Case Application Of Enhanced Green Framementioning

confidence: 99%

“…The quantity of concrete required for the CPCs was 429.38 m 3 for both the existing Green Frame and the enhanced one. Overall, it was determined that the two types of Green Frames needed the same quantity of concrete, 2,388.58 m 3 . This implies that the columns and beams are enhanced within a range in which the overall structural system is not greatly affected.…”

Section: Case Application Of Enhanced Green Framementioning

confidence: 99%

“…illustrates the construction CO 2 assessment process. First, CO 2 units are applied to the estimated resources' quantity using the methods described by Hong et al (2009Hong et al ( , 2010 and Lee et al (2012) and the production CO 2 is estimated. Second, installation CO 2 is estimated based on the energy consumption of the equipment used for installation.…”

Section: Assessment Of Co 2 Emission In Green Frame Constructionmentioning

confidence: 99%

“…To evaluate the CO 2 emissions associated with the Green Frame, Hong et al (2009Hong et al ( , 2010 and Lee et al (2012) applied the CO 2 unit to quantity resources using Equation (1). This CO 2 unit is the production CO 2 of resources, and is not included in the CO 2 generated during the material transportation and construction phases.…”

Section: Assessment Of Co 2 Emission In Green Frame Constructionmentioning

confidence: 99%

“…Green frame has proven through previous studies to have not only structural safety, constructability, and economic feasibility, but also environment-friendliness (SH Corporation, 2010; Hon et al, 2010a; Joo et al, 2012a; Kim et al, 2012). Hong et al (2009) suggested the Green Frame concept, proving that it has a CO 2 reduction effect of approximately 18-23% compared to conventional methods. Lee et al (2012b) improved the Green Frame and confirmed that it reduced CO 2 emissions by an additional 2.8%.…”

Section: Introductionmentioning

confidence: 99%

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Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Lim

Lee

Kim

2015

Journal of Asian Architecture and Building Engineering

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Green Frame is a column-beam system that uses composite precast concrete members. Previous studies have proven this system to be not only structurally safe, constructible, and economically feasible, but also environmentally friendly. However, the column and beam of the frame need to be improved further in terms of structural performance in order to reduce the CO 2 emissions. To this end, a more enhanced structural system than the existing Green Frame has been developed. The aim of this paper is to analyze the embodied energy and CO 2 reduction effect of a column-beam structure with enhanced CPC members. An apartment building project was selected as a case study, and the CO 2 reduction effect was compared between the existing and enhanced Green Frame. It was found that the improved system would result in a 3% reduction in CO 2 compared with the existing one.

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Section: Case Application Of Enhanced Green Framementioning

confidence: 99%

Section: Case Application Of Enhanced Green Framementioning

confidence: 99%

Section: Assessment Of Co 2 Emission In Green Frame Constructionmentioning

confidence: 99%

Section: Assessment Of Co 2 Emission In Green Frame Constructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Lim

Lee

Kim

2015

Journal of Asian Architecture and Building Engineering

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Technical‐economic assessment of redesigned reinforced concrete pre‐slabs: Incorporating corrugated cardboard

Fraile-García

Ferreiro‐Cabello

Pernía‐Espinoza

et al. 2019

Structural Concrete

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Innovations occur in the design of structural elements in order to incorporate and/or improve technical features. This study begins with a standard design for one-way reinforced pre-slabs. Thermal performance is analyzed, along with the possibility of improving it, by means of incorporating corrugated cardboard. Tests were conducted with prototypes to investigate the viability of integrating corrugated cardboard into the production process of reinforced concrete pre-slabs. The modified production processes (of corrugated cardboard and concrete pre-slabs) and the improvements in thermal performance were evident in the final design. These improvements as compared to the conventional design are quantified by thermal transmittance, which was between 90.16 and 140.98% when utilizing corrugated cardboard with a thermal conductivity between 0.10 and 0.05 W m −1 K −1 respectively. Adding this new material and modifying the resistance section did entail an increase in cost. However, the joint evaluation of the production and use phases of the structural element designed indicated a positive economic balance. It was found that with the new design, the structural solution's thermal performance improved and compensated for the increase in costs incurred during the production phase.

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Analytical investigation of hybrid composite precast beams with modified strain compatibility for entire history of nominal flexural capacity

Hong

Lee

Kim

et al. 2015

Structural Design Tall Build

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SUMMARYThe strain compatibility documented in Chapter I of the American Institute of Steel Construction 360-10 (AISC, 2010) was modified to provide accurate analytical solution for hybrid composite precast beams. In the proposed method, locations of neutral axis of the section are investigated to formulate all possible equilibrium equations of stress fields of composite sections. The only neutral axis satisfying all stress fields is then found for composite sections for entire loading history including yield and maximum load limit state and between those limit states. Finally, the nominal moment capacity of hybrid composite precast beam is calculated based on the correct neutral axis. Experimental study was conducted to verify the accuracy of the proposed method. The test results for hybrid composite precast beams agreed very well with the analysis results. The capacity difference between them is less than 4.8%. This study also compares the proposed design method with the conventional strength addition method, showing that the conventional method underestimated structures leading to over-design. It was found that the new approach predicted the behaviors of hybrid composite precast beams more accurately than the conventional methods.

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A new apartment construction technology with effective CO2 emission reduction capabilities

Cited by 40 publications

References 4 publications

Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Technical‐economic assessment of redesigned reinforced concrete pre‐slabs: Incorporating corrugated cardboard

Analytical investigation of hybrid composite precast beams with modified strain compatibility for entire history of nominal flexural capacity

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A new apartment construction technology with effective CO2 emission reduction capabilities

Cited by 40 publications

References 4 publications

Embodied Energy and CO2Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Embodied Energy and CO2Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Technical‐economic assessment of redesigned reinforced concrete pre‐slabs: Incorporating corrugated cardboard

Analytical investigation of hybrid composite precast beams with modified strain compatibility for entire history of nominal flexural capacity

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Product

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Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members

Embodied Energy and CO₂Emission Reduction of a Column-Beam Structure with Enhanced Composite Precast Concrete Members