Experimental on bond properties of grooved interface between high-strength steel wire mesh reinforced ECC and concrete

ZHU Juntao; LIU Yawen; WANG Juan; LI Ke

doi:10.13801/j.cnki.fhclxb.20220721.001

Volume 40 Issue 5

May 2023

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ZHU Juntao, LIU Yawen, WANG Juan, et al. Experimental on bond properties of grooved interface between high-strength steel wire mesh reinforced ECC and concrete[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2913-2925. doi: 10.13801/j.cnki.fhclxb.20220721.001

Citation:

ZHU Juntao, LIU Yawen, WANG Juan, et al. Experimental on bond properties of grooved interface between high-strength steel wire mesh reinforced ECC and concrete[J]. Acta Materiae Compositae Sinica, 2023, 40(5): 2913-2925. doi: 10.13801/j.cnki.fhclxb.20220721.001

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Experimental on bond properties of grooved interface between high-strength steel wire mesh reinforced ECC and concrete

doi: 10.13801/j.cnki.fhclxb.20220721.001

School of Water Conservancy and Civil Engineering, Zhengzhou University, Zhengzhou 450001, China

Funds: National Natural Science Foundation of China (51708511); Ministry of Housing and Urban Rural Development Science and Technology Program (2019-K-059); Young Backbone Teacher Project of Henan Province (2020GGJS003)

Received Date: 2022-05-17
Accepted Date: 2022-07-08
Rev Recd Date: 2022-06-16

Available Online: 2022-07-22

Publish Date: 2023-05-15

Abstract

Abstract

In order to study the effect of grooved interface on the bonding properties of high-strength steel wire mesh reinforced engineered cementitious composites (HSSWM-ECC) and concrete, a total of 36 specimens in 12 sets were designed and fabricated for beam tests, considering the effect of the number of grooves, depth of grooves, steel strand diameter, longitudinal strand ratio and tensile strength of ECC. The results show that the damage patterns include interfacial peeling failure and strand fracture damage. Within the range of the total grooves involved width of 20 mm and the groove depth of 5 mm, the bond behavior between HSSWM-ECC and concrete can be effectively improved by increasing the number or depth of grooves. The longitudinal strand ratio and ECC tensile strength are linearly correlated with the interface bond performance indicators (bond stress and its corresponding slip). Based on the analysis of the bonding mechanism of the grooved interface, a prediction model of the shear bearing capacity considering the groove features (number of grooves, depth of grooves) and the strength characteristics of the HSSWM-ECC layer (longitudinal strand ratio, strand diameter, ECC tensile strength) is established, which is in good agreement with the test results.
- high-strength steel wire mesh,
- ECC,
- grooved interface,
- bond behavior,
- beam mode test,
- bearing capacity
Long Abstrsct
Innovation Points

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References(20)

References

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