Study on repair materials and technologies for addressing crack-related damage in the Earthen City Wall of Kaifeng
Tingting Yue, Xizhi Zhang, Jianwei Yue, Wenhao Li, Xiang Zhu, Jingwen Yue, Gobinath Ravindran, Jason Morgan, Hailing Ma, Hailing Ma
TL;DR
This study develops and tests repair materials to fix cracks in the ancient Kaifeng city wall, focusing on improving durability and waterproofing.
Contribution
A novel high-fluidity crack repair material combining urea urease, quicklime, and sodium methylsilicate is proposed and experimentally validated.
Findings
A repair material with 7.5% quicklime and 7% sodium methylsilicate achieved a total efficacy coefficient of 96.25.
Waterborne polyurethane showed the best waterproofing performance among tested agents.
The repair material maintained structural integrity after 30 freeze-thaw cycles.
Abstract
Rain and snow seepage into the cracks of the soil wall is the leading cause of its surface weathering, and the key to crack repair lies in developing reasonable repair materials. Based on the carbonation principle and mineralization mechanism of quicklime, this study focuses on the cracks in the city wall of Kaifeng as the research subject. Urea urease solution, quicklime, sodium methylsilicate, styrene-acrylic emulsion, waterborne polyurethane, and soil were selected to prepare 27 groups of high-fluidity repair materials with varying proportions. The surface strength, water absorption, surface strength after water absorption, consistency and freeze-thaw cycle tests of crack repair samples were carried out to explore the repair effects of different proportions of repair materials on crack diseases. The results demonstrated that the urease urea solution, along with its mineralization…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
Figure 21
Figure 22
Figure 23
Figure 24
Figure 25
Figure 26
Figure 27
Figure 28
Figure 29
Figure 30
Figure 31
Figure 32
Figure 33
Figure 34
Figure 35
Figure 36
Figure 37
Figure 38
Figure 39
Figure 40
Figure 41
Figure 42
Figure 43
Figure 44
Figure 45Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsMicrobial Applications in Construction Materials · Concrete and Cement Materials Research · Structural Behavior of Reinforced Concrete