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The Macro-Micro Bonding Characteristics between Desert Sand Self-compacting Concrete and Existing Concrete
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Chao GUAN1, Rui SONG1, Jin-yao HAN1, Hai-feng LIU2, *, Wei-han CAI2
Science Technology and Engineering | 2025, 25(6) : 2490 - 2498
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Science Technology and Engineering | 2025, 25(6): 2490-2498
• Papers·Architectural Science •
The Macro-Micro Bonding Characteristics between Desert Sand Self-compacting Concrete and Existing Concrete
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Chao GUAN1, Rui SONG1, Jin-yao HAN1, Hai-feng LIU2, *, Wei-han CAI2
Affiliations
  • 1 Ningxia Agricultural Reclamation Construction Co., Ltd., Ningxia University, Yinchuan 750001, China
  • 2 College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
Published: 2025-02-28 doi: 10.12404/j.issn.1671-1815.2402191
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Bonding with existing concrete is one of the important application situations of self-compacting concrete. With the aim of investigating the bonding characteristics between DSSC (desert sand self-compacting concrete) and other existing concrete, the bond-casting test, bonding interface splitting tensile strength and sand-filling method was used to determinate the failure mode and analyze the influence of concrete type and interface treatment method on the bonding characteristics between old and new concrete. Scanning electron microscope was used to photograph the micro-morphological characteristics of the bonding interface and determinate the distribution of gap width. The results show that the bonding performance is stronger when the linear grooving is consistent with the loading direction. Compared with linear groove cutting, the drilling interface is more efficient in interface efficiency and bonding strength. Low water-to-cement ratio reduces the bond interface gap. The effect of desert sand on the reduction of the bond interface gap is more significant with low water-to-cement ratio.

DSSC (desert sand self-compacting concrete)  /  bonding characteristics  /  interface treatment  /  microstructure
Chao GUAN, Rui SONG, Jin-yao HAN, Hai-feng LIU, Wei-han CAI. The Macro-Micro Bonding Characteristics between Desert Sand Self-compacting Concrete and Existing Concrete[J]. Science Technology and Engineering, 2025 , 25 (6) : 2490 -2498 . DOI: 10.12404/j.issn.1671-1815.2402191
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Year 2025 volume 25 Issue 6
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Article Info
doi: 10.12404/j.issn.1671-1815.2402191
  • Receive Date：2024-03-27
  • Online Date：2025-07-27
  • Published：2025-02-28
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History
  • Received：2024-03-27
  • Revised：2024-12-10
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    1 Ningxia Agricultural Reclamation Construction Co., Ltd., Ningxia University, Yinchuan 750001, China
    2 College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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