Ameliorating Precast Concrete Curbs Using Rubber and Nano Material

Disposal of waste tire rubber has become one of the major environmental issues in each part the World. One of the possible solutions to dispose of scrap tire rubber is using them into concrete curbs. This paper presents a new method to ameliorate the rubber concrete using a particular rubber size and Nano Material. Initially six mix designs were performed to determine the optimized size and percentage of rubber according to compressive strength. Afterwards, the major concrete curbs were made with the optimum mix design. Three different samples were made to determine the effects of rubber and Nano. One of which was made without rubber and Nano, the other was made with rubber and the last with rubber and Nano. Experiments were carried out to determine the durability and strength of specimens according to ISIRI-12728.

Download Full-text

SCRAP TIRE RUBBER-BASED AGGREGATE IN LIGHTWEIGHT CONCRETE

Proceedings of International Structural Engineering and Construction ◽

10.14455/isec.res.2019.146 ◽

2019 ◽

Vol 6 (1) ◽

Author(s):

Martina Záleská ◽

David Čítek ◽

Milena Pavlíková ◽

Vojtěch Bazgier ◽

Zbyšek Pavlík

Keyword(s):

Natural Resources ◽

Lightweight Concrete ◽

Construction Material ◽

Partial Replacement ◽

Mechanical Resistance ◽

Scrap Tire ◽

Tire Rubber ◽

Waste Tire ◽

Waste Tire Rubber ◽

Scrap Tire Rubber

Reusing rubber particles from used tires is good for the environment and, moreover, the world's population is becoming progressively conscious that a very high demand for natural resources is unsustainable. As the concrete industry consumes high amounts of natural resources, both for clinkering and gravel aggregate production, one must focus on its sustainability, considering environmental and economic issues. Therefore, reuse of waste tire rubber in concrete or in other composite materials is a logical solution for sustainable production of construction materials. Hence, the paper is aimed at the development and testing of lightweight concrete composed of a high volume of crushed waste tire rubber used as partial replacement of natural silica aggregate. In order to access the effect of incorporation waste tire rubber-based aggregate in concrete composition, reference concrete mix based on silica aggregate only is studied as well. The crushed waste tire rubber is characterized by its powder density, specific density, and particle size distribution. Specific attention is paid to thermal transport and storage properties of waste rubber that are examined in dependence on compaction time. For the developed lightweight concrete, mechanical, hygric, and thermal properties are tested. The tested lightweight concrete is found to be alternative and environmentally friendly construction material possessing improved thermal insulation function, interesting hygric parameters and sufficient mechanical resistance.

Download Full-text

Properties of Concrete Containing Scrap-Tire Chips

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.399-401.1251 ◽

2011 ◽

Vol 399-401 ◽

pp. 1251-1256 ◽

Cited By ~ 1

Author(s):

Wai Ching Tang ◽

Hong Zhi Cui ◽

Yiu Lo

Keyword(s):

Environmental Issues ◽

Normal Weight ◽

Scrap Tire ◽

Scrap Tires ◽

Bonding Agents ◽

Normal Weight Concrete ◽

Tire Chips ◽

Increase With Increase ◽

The World ◽

Concrete Matrix

Nowadays, one of the most essential environmental issues around the world is to deal with the scrap tire problem. Tires that are used, rejected or unwanted are classified as scrap tires and need to be managed responsibly. In this paper, the scrap tires were shredded into pieces and used to mix with normal weight concrete. Extensive laboratory tests were carried out and the focus of this paper was to characterize the mechanical and permeability properties of concrete containing scrap tires. The main parameters studied were chipped tire content and size. The results showed that the scrap-tire chips without adding special bonding agents apparently showed an even distribution in the mortar and concrete matrix. The elastic modulus, compressive and tensile strengths of scrap tire concrete in general were found lower than that of the control concrete and the differences became significant when the content and size of chipped tires in the mix were increased. Besides, the coefficients of water permeability of concrete were found to increase with increase of chipped tires in the mix.

Download Full-text