Bond strength of glass fibre-reinforced polymer ground anchors with helically wound ribs in different bonding agents

Xue, Wei Chen; Zhang, S. L.; Kang, Ming

doi:10.1179/1432891715z.0000000001590

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…Many factors can affect the bonding strength of GFRP anchor bolts, such as the bar diameter [8][9][10], anchoring agent [11][12][13], and matrix concrete strength [10,14,15]. The bonding strength between the GFRP bar and concrete will differ from the bonding performance of GFRP ground bolts, and the actual state of geotechnical anchoring engineering would be inconsistent without considering the influence of grouting on anchoring performance in bonding strength tests between a GFRP bar and concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Durability and Bond Properties of GFRP Resin Bolts

Lin,

Zhang,

Wang

2024

Materials

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Glass fiber-reinforced polymer (GFRP) anchor bolts are a new type of high-performance nonmetallic anchor with significantly higher tensile strength, a lighter weight, better corrosion resistance, and a lower cost than steel bars. Therefore, exploring the durability and bonding performance of GFRP anchor systems is of great importance for the structural design of protective engineering, especially in coastal environments. However, insufficient research has been conducted on the durability of GFRP resin bolts in seawater conditions, with no universal standard on the pullout testing of GFRP bolts. To study the durability and bonding performance of GFRP resin bolts, durability experiments were conducted in this work using artificial seawater, and the pullout tests were conducted using a large-scale concrete platform with different compressive strengths (21.2, 40.8, and 61.3 MPa). The results of the durability experiments indicated that the strength variations of the GFRP rods and epoxy resin materials in artificial seawater environments were less than 5%. Subsequently, indoor pullout tests using steel tubes filled with epoxy resin were conducted, and the test results indicated a critical anchor length value. Pullout tests of the GFRP resin bolts embedded in large-scale concrete blocks were also conducted with different strengths. According to the test results, all GFRP resin bolts embedded in the three concrete blocks with different compressive strengths exhibited rod fracture failure. The failure mode was not controlled via the compressive strength of the concrete blocks due to the high bonding strength between the resin and the rod, as well as between the resin and the concrete. Therefore, this GFRP resin anchor system could fully utilize the tensile strength of GFRP rods. This research offers significant practical value in verifying the safety and reliability of GFRP resin bolts in corrosive marine service environments, and it contributes to the application and development of GFRP materials in the engineering field, serving as a valuable reference for the structural design and further study of GFRP bolts.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Durability and Bond Properties of GFRP Resin Bolts

Lin,

Zhang,

Wang

2024

Materials

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Evaluation of the properties and applications of FRP bars and anchors: A review

Ren

Wang

Guan

et al. 2023

Reviews on Advanced Materials Science

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The performance deterioration of steel anchors caused by steel corrosion is becoming more serious in slope anchorage applications. Therefore, the fiber reinforced plastic (FRP) composites have become a substitute material for traditional anchorage structures due to their advantages of low price, lightweight, high strength, and corrosion resistance. Numerous studies have proven that FRP anchors have better anchoring capacity than traditional steel anchors in practical engineering and are not as susceptible to environmental influences. This review mainly introduced the mechanical properties of FRP, focuses on the current research progress and innovation of FRP anchor in anchorage engineering, then provides a basis for the design of FRP anchor. In this study, the failure characteristics and problem of insufficient bonding strength of the first interface of FRP anchor anchoring slope were discussed, and the improvement was introduced. It will be conducive to the extension and application of FRP composites as structural materials in civil engineering. A detailed introduction is also given to biomaterials, which are mainly derived from nature and which will not only reduce waste disposal problems and environmental pollution but will also replace conventional applications. Finally, there will be an important reference and value for the development of green and sustainable engineering structures.

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Bond strength of glass fibre-reinforced polymer ground anchors with helically wound ribs in different bonding agents

Cited by 2 publications

References 10 publications

Experimental Study on Durability and Bond Properties of GFRP Resin Bolts

Experimental Study on Durability and Bond Properties of GFRP Resin Bolts

Evaluation of the properties and applications of FRP bars and anchors: A review

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