• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
搜索

Author:

Geng, Yan (Geng, Yan.) | Li, Xiongyan (Li, Xiongyan.) (Scholars:李雄彦) | Xue, Suduo (Xue, Suduo.) (Scholars:薛素铎) | Li, Jinguang (Li, Jinguang.) | Song, Yanjie (Song, Yanjie.)

Indexed by:

EI Scopus SCIE

Abstract:

Air pipe cooling is an emerging technique in dealing with the hydration heat and thermal induced cracking of massive concrete structures. In order to investigate the influence of air pipe cooling on temperature distribution in large-dimension concrete walls, in situ experiments of heat transfer coefficient for internal forced convection were conducted on one experimental wall of 3.6 m x 3.6 m x 0.8 m in dimension with properly embedded corrugated pipes. The relationship between average inlet air velocity and average heat transfer coefficient for internal forced convection was then obtained and fitted to a proposed formula. In addition, air cooling experiments were performed on another three experimental walls to monitor the temperature variations of internal concrete. Meanwhile, finite element (FE) thermal analysis with the proposed formula was carried out and compared with the results of air cooling experiments to verify the accuracy of the proposed FE method. As the comparison results show, the calculated temperature curves are in good agreement with the tested data, with an average deviation of 0.07 degrees C, 0.13 degrees C and 0.19 degrees C under average inlet velocity of 3.78 m/s, 8.12 m/s and 11.64 m/s, respectively. It indicates that the FE analysis with the proposed heat transfer coefficient formula for internal forced convection is effective in estimating concrete temperature variations, providing a reliable fundamental approach for further thermo-mechanical coupling analysis and ventilation design in practical engineering projects. (C) 2018 Elsevier Ltd. All rights reserved.

Keyword:

Hydration heat Air pipe cooling Finite-element thermal analysis Large-dimension RC walls

Author Community:

  • [ 1 ] [Geng, Yan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xiongyan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Xue, Suduo]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Jinguang]China Huanqiu Contracting & Engn Co Ltd, Dept Civil Engn, 1 Chuangda 2nd Rd, Beijing 100012, Peoples R China
  • [ 5 ] [Song, Yanjie]China Huanqiu Contracting & Engn Co Ltd, Dept Civil Engn, 1 Chuangda 2nd Rd, Beijing 100012, Peoples R China

Reprint Author's Address:

  • 李雄彦

    [Li, Xiongyan]Beijing Univ Technol, Coll Architecture & Civil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

Show more details

Related Keywords:

Related Article:

Source :

CONSTRUCTION AND BUILDING MATERIALS

ISSN: 0950-0618

Year: 2019

Volume: 194

Page: 161-170

7 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:211

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 9

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

Online/Total:657/5305602
Address:BJUT Library(100 Pingleyuan,Chaoyang District,Beijing 100124, China Post Code:100124) Contact Us:010-67392185
Copyright:BJUT Library Technical Support:Beijing Aegean Software Co., Ltd.