Utilization of waste rubber tires in artificially cemented alluvial clay

2022-7
AL-SUBARI, LUTF NAGI AHMED
Problematic soils possess unfavorable engineering properties that need to be treated before usage, whilst cement is one of the most common materials used for such purpose. However, cement production is one of the highest contributors to global CO2 emissions that cause global warming. On the other hand, a massive amount of waste rubber tires is being generated annually, which commonly are being disposed of in landfills causing many environmental and health problems. In this context, this study investigates the performance of waste rubber tire inclusion in alluvial clay stabilized with ordinary Portland cement. For this purpose, samples of various mixes were prepared, containing soil, cement content (7%, 10%, and 13%) of the dry mass of the soil, and two types of rubber tires (i.e., powder [TRP] and fiber [TRF]) proportioned as (0%, 2.5%, 5%, 10%, and 20%) of the cement quantity. The blends were compacted at (1600 and 1800 kg/m3) dry densities and 7, 28 and 60 days of curing. After curing, strength (unconfined compressive strength, and stiffness), durability (wet/dry cycles), and microstructural (SEM, XRD, XRF) evaluations were performed. Furthermore, life cycle assessment (LCA) of employing the tires in cemented soils was performed to highlight the environmental impacts of such technique. Overall, the results showed that the inclusion of 2.5% to 5% TRF or TRP replacing cement is the ideal range of rubber tire content in the composites studied concerning strength, stiffness, and weathering resistant performances. Furthermore, LCA results confirmed the significant contribution of this method to the environment.

Suggestions

Hydration and properties of limestone incorporated cementitious systems
Erdoğdu, Korhan; Tokyay, Mustafa; Department of Civil Engineering (2002)
As limestone is a new widely used mineral addition in cement, understanding the effects of this material on cement properties and hydration in a detailed manner is of substantial importance for efficient and proper usage. Consequently, the current study is designed. In the experiemental study, three different limestones were used. The aim of using different limestones is to reach broad generalisations by crosschecking the results and compare the effects of limestones with different structures. These limesto...
Utilization of GGBFS blended cement pastes in well cementing
Alp, Barış; Yaman, İsmail Özgür; Akın, Serhat; Department of Cement Engineering (2012)
In well cementing, the cement slurry is exposed to the conditions far different than those of ordinary Portland cement (PC) used in construction. After placement, hardened cement paste should preserve integrity and provide zonal isolation through the life of the well. American Petroleum Institute (API) Class G cement is the most common cement type used in various well conditions. Class G cement has a high degree of sulfate resistance which makes it more stable than PC when subjected to the compulsive well c...
Utilization of soda and beer wastes in cementitious systems
Aleessa Alam, Burhan; Yaman, İsmail Özgür; Department of Cement Engineering (2009)
To maintain the sustainability of cement and concrete production, there is a trend to use wastes in their production. Soda waste, generated by soda ash production process, and beer waste, generated by beer filtration process, are two locally produced wastes in Turkey and many other countries. The nature of these wastes, mostly their fineness, makes them possible to be used in concrete production, especially as a viscosity modifying agent in the self consolidating type of concrete. In this study, the additio...
Production of low-energy cements using various industrial wastes
Canbek, Oğulcan; Erdoğan, Sinan Turhan; Department of Civil Engineering (2018)
One economical method of lowering the cement related impact of concrete is partial replacement using industrial wastes like fly ash,natural pozzolan,etc. On the one hand its maximum kiln temperature being 150-200°C lower than that required for PC and higher grindability of its clinker make calcium sulfoaluminate(CSA) cements preferable. This study aims to produce CSA cement with partially or completely replace traditional raw materials with some industrial wastes such as fly ash,red mud and desulfogypsum an...
Synthesis of alinite cement using soda solid waste
Güneş, Aslı; Yaman, İsmail Özgür; Öztürk, Abdullah; Department of Cement Engineering (2010)
This study is dedicated to give a production route for a kind of low energy cement called alinite cement using the waste material of soda industry as the main raw material. Soda solid waste, clay and minor amount of iron ore were mixed with certain quantities and burned at six different burning temperatures of 1050, 1100, 1150, 1200, 1350, and 1450 ºC. The resultant clinkers were investigated by mineralogical and chemical analysis. Mineralogical analyses were performed by X-Ray Diffraction (XRD) technique. ...
Citation Formats
L. N. A. AL-SUBARI, “Utilization of waste rubber tires in artificially cemented alluvial clay,” M.S. - Master of Science, Middle East Technical University, 2022.