CO₂ Emission Analysis of Light Aggregate Concrete Block in China

Abstract:

The development and application of light aggregate concrete blocks are considered as one of the key issue that promote the energy saving and emission reduction in construction and building materials industries. In this paper, the greenhouse gas (GHG) emissions of light aggregate concrete blocks during the whole life cycle were analyzed based on life cycle assessment (LCA) methodology. The results demonstrated that the amount of GHG emissions of the light aggregate concrete block was 174 kg/m³ in the system boundary of ‘from cradle to gate’. The direct GHG emissions was 51.31 kg/m³ accounting for 28.46% of the aggregate emission, while the indirect GHG emissions was 124 kg/m³. The cement production and the concrete block production were the main contributors to the total emissions. According to the sensitivity analysis, the GHG emissions amount was quite sensitive to the amount of cement and ceramsite consumption.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 1963-1969
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.1963
• Online since: June 2017
• Authors: Yan Qiong Sun, Yu Liu*, Su Ping Cui
• Keywords: Greenhouse Gas, Life Cycle Assessment (LCA), Light Aggregate Concrete Blocks, Wall Materials

References

[1] Chinese Building Materials Federation. The industrial Statistics almanac of the Chinses building materials[M]. Beijing: the compile of the industrial almanac about the Chinese building materials. 2011: 131-132.

[2] Guinee J.B., Heijungs R., Huppes G., et al. Life cycle assessment: past, present, and future. Environ. Sci. Technol. 2011, 45(1), 90-96.

DOI: 10.1021/es101316v

[3] ISO 24040 International standard Environmental management-Life cycle assessment-Principles and framework. International Organization for standardization: GENEVA, Switzerland, (2006).

[4] Psul Fink. The Roots of LCA in Switzerland—Continuous Learning by Doing[J]. Int. J LCA, 1997, 2(3): 131-134.

DOI: 10.1007/bf02978804

[5] Activities of the LCA-Society of Japan(JLCA) and Development Towards the Future[J]. Int. J LCA, 1998, 3(2): 69-70.

DOI: 10.1007/bf02978489

[6] Nobuhiko Narita etc. Current LCA Database Development in Japan—Results of the LCA Project[J]. Int. J LCA, 2004, 9(6): 355-359.

DOI: 10.1007/bf02979077

[7] Pere Fullana, Rita Puig. Analisis del ciclo de vida—Life Cycle Assessment in Spanish[J]. Int. J LCA, 1998, 3(1): 56.

DOI: 10.1007/bf02978453

[8] Antonio Giacomucci, Gian Luca Baldo. LCA Activities in Italy[J]. Int. J LCA, 1998, 3(2): 68.

DOI: 10.1007/bf02978488

[9] P. Gong. Study on Green Degree Evaluation System of Wall Building Materials [D]. Chongqing University, (2007).

[10] P.P. Huang. Study on the Life-cycle Energy consumption of New-type Wall-material[D]. Hubei University of technology, (2013).

[11] X.Y. Zhang, H.X. Yuan, K.H. Lin. Research on green assessment of autoclaved aerated concrete blocks based on life cycle theory[J]. New building materials, 2013, 11: 56-59.

[12] J. Liu, X.F. Zheng, X.L. Xie, Y.G. Li. The theoretic and practical analysis of the life cycle carbon emission on the autoclaved aerated concrete blocks [J]. Construction blocks and blocks building, 2012, 05: 43-45.

[13] Q.J. Li. The energy consumption and carbon emission analysis of the life cycle of the autoclaved aerated concrete blocks and the sintering shaly hollow bricks [J]. Journal of Chongqing College of Electronic Engineering, 2015, 04: 148-151.

[14] H. Zhao,Y. Liang,H. Dong W.Z. Lin. Analysis on the cost and benefit of the life cycle of foamed concrete blocks [J]. Construction technology, 2011, 13: 65-67.

[15] M.H. Fang. The life cycle assessment of typical wall materials[D]. Beijing university of technology, (2013).

[16] B.Q. He, S.Z. Li. The manufacturing technique and application of powder ash air-entrained concrete blocks[J]. Coal ash , 2004, 02: 37-39.

[17] W.X. Wang, C. Liu, L.L. Zhang, A.J. Wang L.P. Liao . The performance and manufacture of the cement-based foamed concrete blocks[J]. Construction blocks and blocks building, 2012, 06: 5-6, 8-10.

[18] X.J. Chen. The manufacture technique and equipment maintenance of the small concrete hollow blocks[J]. The reformation of Wall materials and the building energy-saving, 2008, 09: 40-43.

[19] Q.F. Wang, Z. Wang, Z.H. Zhang. The thermotechnical and improvement measures of the light aggregate concrete hollow blocks[J]. New building materials, 2006, 06: 58-60.

[20] CNMLCA. Sinocenter materials life cycle inventory database. Cnmlca. bjut. edu. cn.

[21] S.P. Cui. The LCA research and application progress of cement[J]. Materials China, 2011, 08: 35-41.

[22] L.P. Ma, Z.H. Wang, X.Z. Gong, et al. Life cycle Inventory Analysis of Two Types of Freight Transport on City Roads[J]. Process in Materials Science and Engineering. (2006).