Life cycle assessment (LCA) of different concrete mixtures and an application in a green building

Download

index.pdf

Date

2019

Author

Tükenmez, Elif

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

401
views

436
downloads

Concrete is the most utilized building materials on a global scale. Raw materials and energy are required in high quantity for the production phase of the concrete which mainly consists of cement, aggregate, water and admixtures. This causes significant environmental concern for the sustainable development of the building sector. Therefore, environmental impact assessment studies conducted for concrete production are gaining importance, over the last two decades. Life Cycle Assessment (LCA) is the most effective and widespread method used to assess the impacts of the concrete production phases over their entire life from cradle to grave. Numerous LCA studies have been conducting to evaluate the environmental impacts of the green concrete mixtures produced by substituting the cement and natural aggregate with industrial by-products and recycled aggregate, respectively. In this study, it is aimed to analyze the environmental impacts of several green concrete mixtures by means of LCA. For this purpose, cradle to gate LCA analyses was conducted for 21 green concrete mixtures constituted by using multivariate combinations with supplementary cementitious materials such as fly ash, blast furnace slag, silica fume, natural pozzolan and limestone powder and / or recycled aggregate. In addition, environmental impacts of concrete were assessed cradle to grave through integration of these constituted green concrete mixtures to the LCA study which was conducted for the green building that certificated by Leadership in Energy and Environmental Design (LEED) rating system in Turkey. SimaPro software and CML impact assessment method was used in the LCA studies.

Subject Keywords

Concrete, Concrete Additives., Concrete Production, Supplementary Cementitious Materials, Life Cycle Assessment, Concrete Mixtures.

URI

http://etd.lib.metu.edu.tr/upload/12624492/index.pdf
https://hdl.handle.net/11511/44285

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Retrofit of Non-Ductile RC Frames with Precast Concrete (PC) Wall Panels BARAN, MEHMET; Tankut, Tugrul (2011-12-01) An economic, structurally effective and practically applicable strengthening method had been developed for reinforced concrete (RC) framed buildings. This study presents the test results on strengthening of deficient RC frames by using high strength precast concrete (PC) panels. The idea of the method is to convert the existing hollow brick infill wall into a load carrying system by bonding PC panels on to the plastered hollow brick infills. For this purpose, six (two reference and four strengthened) one-th...
Overlapping lattice modeling for concrete fracture simulations using sequentially linear analysis Aydın, Beyazıt Bestami; Binici, Barış; Tuncay, Kağan; Department of Civil Engineering (2017) Estimation of the crack location and width in concrete structures is important due to the sustained damage in structures as a result of extreme loads and aging. The location and width of cracks are the most influential parameters for making decisions on the structure service life. Despite significant developments, the computational modelling of concrete fracture initiation and propagation are still challenging tasks. Many different numerical approaches, most of them based on finite element analysis, have be...
Bond of LAP-spliced bars in self-compacting concrete Ghasabeh, Mehran; Canbay, Erdem; Department of Civil Engineering (2013) Self-compacting concrete is an innovative construction material; its priority to normal vibrated concrete is that there is not any vibration requirement. Bond strength of reinforcement is one of the key factors that ensures the usefulness of any reinforced concrete structure. In this study, 6 full-scale concrete beams spliced at the mid-span were tested under two-point symmetrical loading. Test variables were bottom cover, side cover, free spacing between longitudinal reinforcement, lap-splice length and pr...
High performance structural lightweight concrete utilizing natural perlite aggregate and perlite powder Eser, Hasan; Turanlı, Lütfullah; Department of Civil Engineering (2014) Structural Lightweight Concrete is generally made by using artificial lightweight aggregates such as expanded clay, shale and slate. However, rapidly increasing fuel prices in recent decades and corresponding increase in the production costs of these aggregates have renewed the interest in natural lightweight aggregates such as pumice, scoria, rhyolite and perlite. This study investigates the mechanical properties and durability characteristics of high-performance lightweight concretes utilizing natural per...
HYSTERETIC RESPONSE OF REINFORCED-CONCRETE INFILLED FRAMES ALTIN, S; ERSOY, U; TANKUT, T (1992-08-01) Strengthening of framed reinforced concrete structures by cast-in-place reinforced concrete infills is commonly used in practice. The objective of this study is to investigate the behavior of such infilled frames under seismic loads. For this purpose, 14 two-story, one-bay infilled frames are tested under reversed cyclic loading simulating seismic action. The variables investigated are thc effect of type of infill reinforcement, thc connection between the frame and thc infill, and the flexural capacity of c...

Citation Formats

E. Tükenmez, “Life cycle assessment (LCA) of different concrete mixtures and an application in a green building,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Environmental Engineering., Middle East Technical University, 2019.