International Journal of Scientific Research and Engineering Development( International Peer Reviewed Open Access Journal ) ISSN [ Online ] : 2581 - 7175 |
Mechanical Behavior of Reinforced Concrete Sleepers on a Railway Line: The Case of the National Railway Company of Congo(SNCC)
International Journal of Scientific Research and Engineering Development (IJSRED) | ||
Published Issue : Volume-4 Issue-1 | ||
Year of Publication : 2021 | ||
Unique Identification Number : IJSRED-V4I1P110 | ||
Authors : Numbi Kiseba Patrick, Kiseya Flory Tshikala, Kipata Mwabwana Louis, Kitobo Samsoni Willy | ||
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Abstract :
This study focuses on the mechanical behavior of the concrete of the sleepers of the SNCC rails. The objective is to make the concrete durable for the case of SNCC rail sleepers, in order to highlight the elements entering into the constitution of this concrete by referring to the standards prescribed by Eurocodes 2.To achieve these objectives, Compressive strength tests for 7 days, 14 and 28 days, the particle size analysis of the aggregates (0/5; 7/15; 15/25), were carried out, the sagging and the '' analysis of the mixing water, which gave the following results: RCavg at 7 days: 29.4431 MPa with a mass of 862g, Fmoy = 652.24 kN, RCavg at 14 days: 35.45 MPa with a mass of 862g, RCavg at 28 days: 42.44 MPa with a mass of 862g, Fmoy = 661.34kN.We then notice that the mixing water contains high amounts of Cl- and SO4- this influences the durability and permeability of the concrete. From where we suggest to the SNCC to use, the water-repellent additive of mass in order to improve the tightness of the concrete by blocking the pores created by the occluded air and to take into account the chemical treatments of this water to modify chlorides and sulphates which negatively influence the durability of concrete.