PSI - Issue 18

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 ScienceDirect

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Procedia Structural Integrity 18 (2019) 101–107

25th International Conference on Fracture and Structural Integrity Concrete Containing Recycled Rubber Steel Fiber Sana Gul a *, Sohaib Naseer b 25th International Conference on Fracture and Structural Integrity Concrete Containing Recycled Rubber Steel Fiber Sana Gul a *, Sohaib Naseer b a National University of science and Technology, Islamabad, Pakistan b Capital University of Science and Technology, Islamabad, Pakistan a National University of science and Technology, Islamabad, Pakistan b Capital University of Science and Technology, Islamabad, Pakistan

Abstract To dispose waste rubber tire is one of the major environmental issue all over the world. Every year large number of tires are buried or discarded all over the world causing a serious threat to the environment. Mostly waste rubber tires are used by some industries as fuel but as we know this kind of waste utilization has hazardous effect and can be uneconomical. Therefore, it is needed to use this kind of waste in a such away so that it might not affect the environment at any cost. This paper presents the use of scrap rubber tires as an alternative to steel fiber in fiber reinforced concrete. Four types of concrete mix were prepared, the test batch and the control batch containing 1 % and 5 % replacement of steel fiber and recycled rubber steel fibers by volume of concrete respectively. W/c was kept constant so that the actual field condition can be replicated that are normally adopted at sites. Results showed a reduced compressive and split tensile strength up to 20% and 14% for 1% replacement of RRSF respectively. For 5% replacement of RRSF a reduction of 38% and 42% was observed for compressive and split tensile strength respectively. It was concluded that for replacement rates up to 1% of RRSF by volume of concrete did influence the compressive and split tensile strength of concrete but the samples with recycled rubber steel fibers has somehow showed ductile behaviour rather than brittle. Such behaviour can prove beneficial for structures that require good impact resistance properties. It is recommended to use such kind of concrete for the construction of light weight concrete structures. Abstract To dispose wast rubber t re is one of the major environment l issue all over the world. Every year arge numb r of tir s are buried or discarded all over the world causing a ser ous threat to the e ir e t. Mostly waste rubber tires are used by s me industri s as fuel but s we know this kind of waste utilization has hazardous effect and can be uneconomical. Therefore, it is needed to us this kind of waste in a such away so that it might n t aff ct th environment at any cost. This paper presents the use of scrap rubber tires as an alternative to steel fiber in fiber reinf rced con rete. Four typ s of concrete ix were r pared, the test batch and the control batch containing 1 % and 5 % replacement f steel fiber and recycled rubber steel ibers by volume of concrete res e tively. W/c was kept constant so th t the actual field con ition can be replicated that are normally ado ted at sites. Results showed a reduced o pressive and split tensile strength p to 20% and 14% for 1% r placement of RRSF re ec ively. For 5% replacem nt of RRSF a reduction of 38% and 42% was observed f r compressive and split t nsile strength respectively. It was concluded that for replacement rates up to 1% of RRSF by volume of concrete did influence the compressive and split tensile strength of concrete but the samples with recycled rubber steel fibers has somehow showed ductile behaviour rather than brittle. Such behaviour can prove beneficial for structures that require good impact resistance properties. It is recommended to use such kind of concrete for the construction of light weight concrete structures.

© 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. © 2019 The Authors. Published by Elsevier B.V. P er-review under r sponsibility of the Gruppo Italiano Frattura (IGF) ExCo. Keywords: Scrap rubber tires; steel fiber; mechanical properties; Recycled Rubber Steel Fiber (RRSF)

Keywords: Scrap rubber tires; steel fiber; mechanical properties; Recycled Rubber Steel Fiber (RRSF)

* Corresponding author. E-mail address: sana19292@gmail.com

2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. * Corresponding author. E-mail address: sana19292@gmail.com

2452-3216  2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the Gruppo Italiano Frattura (IGF) ExCo. 10.1016/j.prostr.2019.08.144