Study on Mass Concrete Construction Technology of Raft Foundation in Yantai Ocean Development Center

Abstract:

Mass concrete is widely being used in the construction field, especially for the foundation of super high-rise building. In the initial stage of pouring completion of mass concrete, lots of heat generated from the cement hydration will lead to a high temperature inside of concrete. When the temperature difference between the inner and outer of concrete exceeds the limited value, thermal stress will be greater than the tensile strength of concrete, which may cause hazardous penetrating cracks of the structure. To ensure the safety and durability of concrete structure, necessary measures should be taken to control the temperature rise and construction quality of concrete. Taking a super high-rise building project as an example, this paper introduces several effective solutions to resolve above problems. The technical measures such as enhancing the concrete quality, controlling temperature rise, strengthening temperature monitoring would be detailed illustrated. Meanwhile, valuable suggestions achieved from this practical project are proposed in order to guide the structural design and on-site construction of similar projects.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 1421-1425
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.1421
• Online since: April 2014
• Authors: Jian Zhu, Yan Bin Zhang, Xu Feng Du, Yong Jiang*
• Keywords: Crack, Mass Concrete, Raft Foundation, Super High-Rise Building, Temperature Control

References

[1] Mehta, P.K. Concrete Technology for Sustainable Development [J]. Concrete International, 1999, 21(11): 47-52.

[2] Gajda J, Vangeem M. Controlling temperatures in mass concrete [J]. Concrete international, 2002, 24(1): 58-62.

[3] ACI Committee 207, Mass concrete (ACI 207. 1R-96).