Experimental Study on Bond Stress Distribution in Shale Ceramsite Concrete Beams

ZENG Zhibing; LIU Hui; CAO Guohui; ZHOU Baishun; ZHOU Chao

doi:10.3724/j.gyjzG26010902

Volume 56 Issue 6

Jun. 2026

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ZENG Zhibing, LIU Hui, CAO Guohui, ZHOU Baishun, ZHOU Chao. Experimental Study on Bond Stress Distribution in Shale Ceramsite Concrete Beams[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 237-246. doi: 10.3724/j.gyjzG26010902

Citation:

ZENG Zhibing, LIU Hui, CAO Guohui, ZHOU Baishun, ZHOU Chao. Experimental Study on Bond Stress Distribution in Shale Ceramsite Concrete Beams[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 237-246. doi: 10.3724/j.gyjzG26010902

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Experimental Study on Bond Stress Distribution in Shale Ceramsite Concrete Beams

doi: 10.3724/j.gyjzG26010902

1. Yiyang City Construction Engineering Quality and Safety Supervision Station, Yiyang 413000, China;
2. Hunan Hongxin Lihui Engineering Technology Co., Ltd., Changsha 410221, China;
3. Hunan City University, Yiyang 413000, China;
4. Zhongnan Safety & Environment Technology Research Institute Co., Ltd., Wuhan 430064, China

Received Date: 2026-01-09
Available Online: 2026-07-06

Abstract

Abstract

To investigate the bond behavior of reinforcing bars embedded in full lightweight shale ceramsite concrete， thirty beam specimens were tested to examine the effects of concrete strength， cover thickness， bar diameter， surface configuration， and anchorage length. The results indicate that specimens reinforced with plain bars mainly fail by synchronous pull-out， whereas those with low-strength concrete or thin cover tend to exhibit a mixed pull-out-splitting failure， while specimens made with medium- to high-strength concrete predominantly undergo brittle splitting characterized by load-slip curves with only an ascending branch. The ultimate bond strength of plain round steel bars is significantly lower than that of ribbed steel bars of the same diameter.For pull-out failure specimens， it decreases as the concrete cover thickness increases； for splitting failure specimens， it increases with the cover thickness， and decreases with an increase in bar diameter. Bond stress is non-uniformly distributed along the anchorage length， with greater cover thickness and higher concrete strength promoting more uniform stress transfer， while bar diameter and anchorage length significantly influence both the peak bond stress and its distribution pattern.
- shale ceramsite concrete,
- bond stress distribution,
- beam test,
- failure mode

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References(21)

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