Next Article in Journal
Basic Concepts of Engineering Risk Management for Fastenings and Risk Register Based on Industry Survey
Previous Article in Journal
Statistical Evaluation of the Perpendicularity of Boreholes in Concrete for Post-Installed Fasteners
Article

Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs

1
Department of Civil Engineering, Qeshm Branch, Islamic Azad University, Qeshm, P.O. Box 7915893144, Iran
2
Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24060, USA
*
Author to whom correspondence should be addressed.
CivilEng 2020, 1(3), 264-274; https://doi.org/10.3390/civileng1030017
Received: 29 September 2020 / Revised: 30 October 2020 / Accepted: 5 November 2020 / Published: 8 November 2020
The excessive production of worn tires remaining from the transportation system and the lack of proper procedures to recycle or reuse these materials have caused critical environmental issues. Due to the rubber’s toughness, this material could be implemented to increase concrete toughness, and by crushing the tires concrete aggregates can be replaced proportionally with rubber crumbs and large quantities of scrapped rubber. However, this substitution decreases the concrete strength. In this study, crushed rubber with sizes from 1 to 3 mm and 3 to 6 mm were replaced by 5%, 10%, and 15% sand; the combination of two additives of nano silica and metakaolin additives with optimum values was used to compensate the degradation of the strength and improve the workability of the concrete. Moreover, the compressive strength, tensile behavior, and modulus of elasticity were measured and compared. The results indicate that the optimum use of nano silica and metakaolin additives could compensate the negative effects of the rubber material implementation in the concrete mixture while improving the overall workability and flowability of the concrete mixture. View Full-Text
Keywords: nano silica additive; metakaolin additive; rubber crumbs; recyclable rubber; concrete strength nano silica additive; metakaolin additive; rubber crumbs; recyclable rubber; concrete strength
Show Figures

Figure 1

MDPI and ACS Style

Chalangaran, N.; Farzampour, A.; Paslar, N. Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs. CivilEng 2020, 1, 264-274. https://doi.org/10.3390/civileng1030017

AMA Style

Chalangaran N, Farzampour A, Paslar N. Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs. CivilEng. 2020; 1(3):264-274. https://doi.org/10.3390/civileng1030017

Chicago/Turabian Style

Chalangaran, Navid, Alireza Farzampour, and Nima Paslar. 2020. "Nano Silica and Metakaolin Effects on the Behavior of Concrete Containing Rubber Crumbs" CivilEng 1, no. 3: 264-274. https://doi.org/10.3390/civileng1030017

Find Other Styles

Article Access Map by Country/Region

1
Back to TopTop