A RESIN TYPE ADDITIVE USE TO IMPROVE LOAD BEARING CAPACITIES OF GROUTED ROCK BOLTS EXPOSED TO THERMAL CYCLES

Öz

A thermoset PMS (Polyvinyl modified silicone) type polymer additive effect on load bearing capacities of cement grouted rock bolt specimens exposed to thermal cycles was investigated with a series of experimental studies. The additive used in this study was in liquid phase while adding into the fresh cement mix and started to solidify by polymerization after being mixed well in the cement grout. The silicone based thermoset product was selected to use because of its ability of polymerization in contact with water. According to the results of this study, the load bearing capacity loss due to thermal cycles was found to be notably limited as a result of using the thermoset additive. Therefore, the additive tested in this study was assessed to improve resistivities of the cement grouted rock bolts against the thermal changes.

Anahtar Kelimeler

• Rock Bolts
• Grout Materials
• Grouts in Rock Bolting
• Thermal Resistivity
• Thermoset Polymer Additive

TERMAL ÇEVRİMLERE MARUZ KALMIŞ DOLGULU KAYA SAPLAMALARININ TAŞIMA KAPASİTELERİNİN ARTIRILMASI İÇİN REÇİNE TÜRÜ BİR KATKI KULLANIMI

Öz

Termal döngülere maruz bırakılan çimento enjeksiyonlu kaya saplaması numunelerinin yük taşıma kapasiteleri üzerinde PMS tipi bir termoset polimer katkının etkisi bir dizi deneysel çalışma ile incelenmiştir. Bu çalışmada kullanılan katkı taze çimento karışımına ilave edilirken sıvı fazda olup, çimento şerbetinde iyice karıştırıldıktan sonra polimerizasyon ile katılaşmaya başlamıştır. Kullanılan termoset ürün su ile temas halinde polimerleşebilme özelliğinden dolayı tercih edilmiştir. Bu çalışmanın sonuçlarına göre, polivinil modifiyeli silikon türü termoset reçine katkısının kullanılması sonucunda termal çevrimlerden kaynaklanan yük taşıma kapasitesi kaybının oldukça azaldığı tespit edilmiştir. Bu nedenle, bu çalışmada test edilen katkı maddesinin çimento enjeksiyonlu kaya saplamalarının termal değişimlere karşı dirençlerini geliştirmek için kullanılabilir olduğu değerlendirilmiştir.

Anahtar Kelimeler

• Kaya Saplamaları
• Dolgu Malzemeleri
• Kaya Saplamalarında Dolgu
• Termal Direnç
• Termoset Polimer Katkı

Kaynakça

1. An, H.S., Lee, S.D., 2016. Reinforcing effects of bolting in jointed rock mass. International Journal of Geo-Engineering, 7, paper no: 10. https://doi.org/10.1186/s40703-016-0024-9
2. ASTM, 2019. ASTM C780-19: Standard Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry. ASTM International, West Conshohocken, PA
3. ASTM, 2020. ASTM C143/C143M-20: Standard Test Method for Slump of Hydraulic-Cement Concrete. ASTM International, West Conshohocken, PA
4. Batugin, A., Wang, Z., Su, Z., Sidikovna, S.S., 2021. Combined support mechanism of rock bolts and anchor cables for adjacent roadways in the external staggered split-level panel layout. International Journal of Coal Science and Technology, 8, 659–673. https://doi.org/10.1007/s40789-020-00399-w
5. Chen, Y., 2014. Experimental study and stress analysis of rock bolt anchorage performance. Journal of Rock Mechanics and Geotechnical Engineering, 6(5), 428-437. https://doi.org/10.1016/j.jrmge.2014.06.002
6. Chen, Y., Wen, G., Hu, J. 2020. Analysis of Deformation Characteristics of Fully Grouted Rock Bolts Under Pull-and-Shear Loading. Rock Mechanics and Rock Engineering, 53, 2981–2993. https://doi.org/10.1007/s00603-020-02108-0
7. Chen, J., Liu, P., Zhao, H., Zhang, C., Zhang, J., 2021. Analytical studying the axial performance of fully encapsulated rock bolts. Engineering Failure Analysis, 128, 105580. https://doi.org/10.1016/j.engfailanal.2021.105580.
8. Cui, S., Liu, P., Li, Z., Xu, X., Ju, J.W., 2020. Shotcrete performance-loss due to seepage and temperature coupling in cold-region tunnels. Construction and Building Materials, 246, 118488. https://doi.org/10.1016/j.conbuildmat.2020.118488

9. Dai, L., Pan, Y., Wang, A., Xiao, Y., Ma, X., 2020. Experimental Study on the Self-Protection Performance of Anchor Bolts with Energy-Absorbing Tails. Rock Mechanics and Rock Engineering, 53, 2249–2263. https://doi.org/10.1007/s00603-019-01990-7
10. Das, A., Bhuyan, M.R., Khattak, M.J., Zhang, Q., 2020. Mitigating reflective cracking in composite pavements through the useof a ductile concrete interlayer. Construction and Building Materials, 259, 120383. https://doi.org/10.1016/j.conbuildmat.2020.120383
11. Groeneveld, A.B., Ahlborna, T.M., Crane, C.K., Burchfield, C.A., Landis, E.N., 2018. Dynamic strength and ductility of ultra-high performance concrete with flow-induced fiber alignment. International Journal of Impact Engineering, 111, 37-45. https://doi.org/10.1016/j.ijimpeng.2017.08.009
12. Guo, Q., Pan, J., Wang, M., Cai, M., Xi, X., 2019. Corrosive Environment Assessment and Corrosion-Induced Rockbolt Failure Analysis in a Costal Underground Mine. International Journal of Corrosion, vol. 2019, Article ID 2105842. https://doi.org/10.1155/2019/2105842
13. Hao, Y., Wu, Y., Ranjith, P.G., Zhang, K., Hao, G., Teng, Y., 2020. A novel energy-absorbing rock bolt with high constant working resistance and long elongation: Principle and static pull-out test. Construction and Building Materials, 243, 118231. https://doi.org/10.1016/j.conbuildmat.2020.118231.
14. Heidari-Rarani, M., Aliha, M.R.M., Shokrieh, M.M., Ayatollahi, M.R., 2014. Mechanical durability of an optimized polymer concrete under various thermal cyclic loadings – An experimental study. Construction and Building Materials, 64, 308–315. https://doi.org/10.1016/j.conbuildmat.2014.04.031
15. Jena, T., Panda, K.C., 2018. Mechanical and durability properties of marine concrete using fly ash and silpozz. Advances in Concrete Constructions, 6(1), 47-68. http://dx.doi.org/10.12989/acc.2018.6.1.047
16. Jiang, B., Oh, K.H., Kim, S.Y., He, X., Oh, S.K., 2019. Technical evaluation method for physical property changes due to environmental degradation of grout-injection repair materials for water-leakage cracks. Applied Sciences, 9(9), 1740. https://doi.org/10.3390/app9091740
17. Kahandawa, R., Domingo, N., Chawynski, G., Uma, S.R., 2021. Factors impacting post-earthquake damage repair cost estimations. International Journal of Disaster Resilience in the Built Environment, 12, 29-49. https://doi.org/10.1108/IJDRBE-10-2019-0071
18. Kang, H., Yang, J., Gao, F., Li, J., 2020. Experimental Study on the Mechanical Behavior of Rock Bolts Subjected to Complex Static and Dynamic Loads. Rock Mechanics and Rock Engineering, 53, 4993–5004. https://doi.org/10.1007/s00603-020-02205-0
19. Kaya, T., Yazıcıoğlu, S., Çerçevik, A.E., 2016. Kaplamalı beton basınç dayanımına donma-çözülmenin etkisi. Mühendislik Bilimleri ve Tasarım Dergisi, 4 (2), 59-65. doi: 10.21923/jesd.12497
20. Keskin, S. N. , Sungur, A. , Akan, R., Uzundurukan, S., 2017. İnce daneli zeminlerde katkı maddelerinin ve donma-çözülme çevriminin serbest basınç dayanımına etkisi. Mühendislik Bilimleri ve Tasarım Dergisi, 5(3), 473-478. doi: 10.21923/jesd.321924
21. Khan, M.S., Almutairi, S., Abbas, H., 2020. Mechanical properties of concrete subjected to cyclic thermal loading. European Journal of Environmental and Civil Engineering. https://doi.org/10.1080/19648189.2020.1782771
22. Kim, H., Rehman, H., Ali, W., Naji, A.M., Kim, J.-j., Kim, J., Yoo, H., 2019. Classification of Factors Affecting the Performance of Fully Grouted Rock Bolts with Empirical Classification Systems. Applied Sciences, 2019, 9, 4781. https://doi.org/10.3390/app9224781
23. Knox, G., Hadjigeorgiou, J., 2022. Influence of Testing Configuration on the Performance of Paddled Energy-Absorbing Rockbolts Under Impact Loading. Rock Mechanics and Rock Engineering, 55, 5705–5721. https://doi.org/10.1007/s00603-022-02945-1
24. Komurlu, E., 2018. Loading rate conditions and specimen size effect on strength and deformability of rock materials under uniaxial compression. International Journal of Geo-Engineering, 9, paper no: 17. https://doi.org/10.1186/s40703-018-0085-z
25. Komurlu, E., 2019. Thermal stress effect on strength loss properties of rock materials: an experimental study on thermal fatigue resistivity. Journal of Natural Hazards and Environment, 5, 124-133. https://doi.org/10.21324/dacd.439006
26. Komurlu, E., 2020. An investigation of using thermoset polymer type liquid additives to improve cement grout performances in rock bolting applications. International Journal of Geosynthetics and Ground Engineering. 6, no: 52. https://doi.org/10.1007/s40891-020-00236-9
27. Komurlu, E., 2021a. Improving performances of friction rock bolts by using new spring plates. Scientific Mining Journal, Vol. 60, 131-135. https://doi.org/10.30797/madencilik.900175
28. Komurlu, E., 2021b. Use of Polymeric Energy Absorption Liners to Improve the Concrete Rock Fall Barriers. Geoscience Engineering, Vol. 67, 168-175. https://doi.org/10.35180/gse-2021-0062
29. Komurlu, E., 2022. Improving support performances of cone bolts by a new grout additive and energy absorber. Advances in Materials Research, 11, 237-250. https://doi.org/10.12989/amr.2022.11.3.237
30. Komurlu, E., Kesimal, A., 2013. Tunnelling and Support Materials from Past to Present. Scientific Mining Journal, 52, 33-47.
31. Komurlu, E., Kesimal, A., 2015a. An experimental study on polyurethane foam reinforced soil use as rock-like material. Journal of Rock Mechanics and Geotechnical Engineering, 7(5), 566-572. https://doi.org/10.1016/j.jrmge.2015.05.004
32. Komurlu, E., Kesimal, A., 2015b. Improved performance of rock bolts using sprayed polyurea coating. Rock Mechanics and Rock Engineering, 48, 2179-2182. https://doi.org/10.1007/s00603-014-0696-4
33. Komurlu, E., Kesimal, A., 2016. An experimental study on reinforcing rock columns using polymeric heated ties. Rock Mechanics and Rock Engineering, 49, 1995-2003. https://doi.org/10.1007/s00603-015-0801-3
34. Komurlu, E., Kesimal, A., 2017. Experimental study on usability of friction rock bolts with plastic body. International Journal of Geomechanics, 17(9), 04017058. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000960
35. Komurlu, E., Kesimal, A., Aksoy, C.O., 2017. Use of polyamide-6 type engineering polymer as grouted rock bolt material. International Journal of Geosynthetics and Ground Engineering, 3, 37, https://doi.org/10.1007/s40891-017-0114-6
36. Korey, M., Johnson, A., Webb, W., Dietenberger, M., Youngblood, J., Howarter, J., 2020. Tannic acid based pre-polymer systems for enhanced intumescence in epoxy thermosets. Green Materials, 8, 150-161. https://doi.org/10.1680/jgrma.19.00061
37. Kovari, K., 2003a, History of the sprayed concrete lining method-part I: milestones up to the 1960s, Tunnelling and Underground Space Technology, 18: 57-69. https://doi.org/10.1016/S0886-7798(03)00005-1
38. Kovari, K., 2003b, History of the sprayed concrete lining method-part II: milestones up to the 1960s. Tunnelling and Underground Space Technology, 18, 71-83. https://doi.org/10.1016/S0886-7798(03)00006-3
39. Lee, M., Basu, D.,2018. An Integrated Approach for Resilience and Sustainability in Geotechnical Engineering. Indian Geotechnical Journal, 48, 207–234 (2018). https://doi.org/10.1007/s40098-018-0297-3
40. Lee, J., Xi, Y., Willam, K. 2008. Properties of concrete after high-temperature heating and cooling. ACI Materials Journal, 105(4), 334-341. https://doi.org/10.14359/19894
41. Li, C.C., 2017. Principles of rockbolting design. Journal of Rock Mechanics and Geotechnical Engineering, 9, 396-414. https://doi.org/10.1016/j.jrmge.2017.04.002
42. Liu, S., He, D., Jia, H., Fu, M., Hou, B., 2022. Anchoring eccentricity features and rectifying devices for resin grouted bolt/cable bolt, International Journal of Mining Science and Technology. https://doi.org/10.1016/j.ijmst.2022.08.006.
43. Magalhães, S., Alves, L., Medronho, B., Fonseca, A.C., Romano, A., Coelho, J.F.J., Norgren, M., 2019. Brief overview on bio-based adhesives and sealants. Polymers, 11(10), 1685. https://doi.org/10.3390/polym11101685
44. Marthong, C., 2019. Effect of waste cement bag fibers on the mechanical strength of concrete. Advances in Materials Research, 8(2), 103-115. http://dx.doi.org/10.12989/amr.2019.8.2.103
45. Owen, M.J., 2017. Silicone hydrophobicity and oleophilicity. Silicon, 9, 651–655. https://doi.org/10.1007/s12633-014-9188-0
46. Shang, X., Lu, Z., 2014. Impact of high temperature on the compressive strength of ECC. Advances in Materials Science and Engineering, 919078. https://doi.org/10.1155/2014/919078
47. Teymen, A., Kılıç, A., 2018. Effect of grout strength on the stress distribution (tensile) of fully-grouted rockbolts. Tunnelling and Underground Space Technology, 77, 280-287. https://doi.org/10.1016/j.tust.2018.04.022
48. Tsangouri, E., Aggelis, D., Hemelrijck, D.V., 2015. Quantifying thermoset polymers healing efficiency: A systematic review of mechanical testing. Progress in Polymer Science, 49–50, 154-174. https://doi.org/10.1016/j.progpolymsci.2015.06.002.
49. Wang, H., Li, S., Wang, Q., Wang, D., Li, W., Liu, P., Li, X., Chen, Y., 2019. Investigating the supporting effect of rock bolts in varying anchoring methods in a tunnel. Geomechanics and Engineering, 19(6), 485-498. http://dx.doi.org/10.12989/gae.2019.19.6.485
50. Wang, B., Yu, W., Chen, Z., 2022. Effect of anchor plate on the mechanical behavior of prestressed rock bolt used in squeezing large deformation tunnel. Acta Geotechnica, 17, 3591–3611. https://doi.org/10.1007/s11440-022-01460-5
51. Wu, X., Jiang, Y., Wang, G., Gong, B., Guan, Z., Deng, T., 2019. Performance of a New Yielding Rock Bolt Under Pull and Shear Loading Conditions. Rock Mechanics and Rock Engineering, 52, 3401–3412. https://doi.org/10.1007/s00603-019-01779-8
52. Yan, S., Song, Y., Bai, J., Elmo, D., 2019. A Study on the Failure of Resin End-Anchored Rockbolts Subjected to Tensile Load. Rock Mechanics and Rock Engineering, 52, 1917–1930. https://doi.org/10.1007/s00603-018-1663-2
53. Yaragal, S.C., Ramanjaneyulu, S., 2016. Exposure to elevated temperatures and cooled under different regimes–a study on polypropylene concrete. Advances in Materials Research, 5(1), 21-34. http://dx.doi.org/10.12989/amr.2016.5.1.021
54. Yaragal, S.C., Warrier, J., Podila, R., 2015. Strength loss contributions during stages of heating, retention and cooling regimes for concretes. Advances in Materials Research, 4(1), 13-22. http://dx.doi.org/10.12989/amr.2015.4.2.013
55. Zander, L., Peng, J., 2018. New silane-terminated polymers for sealants and adhesives. Adhesion Adhesives and Sealants, 15, 20–23. https://doi.org/10.1007/s35784-018-0014-8
56. Zhao, Z., Gao, X., Tan, Y., Ma, Q., 2018. Theoretical and numerical study on reinforcing effect of rock-bolt through composite soft rock-mass. Journal of Central South Univsity, 25, 2512–2522. https://doi.org/10.1007/s11771-018-3932-3