Life Cycle Assessment of Waste Glass Powder Incorporation on Concrete: A Bridge Retrofit Study Case

Guignone, Guilherme Cunha; Gama, João Luiz Calmon Nogueira da; Vieira, Geilma Lima; Zulcão, Robson; Rebello, Thais Ayres

doi:10.3390/app12073353

Cited by 10 publications

(6 citation statements)

References 37 publications

(60 reference statements)

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“…This mode corresponds to the induction phenomenon interpreted by the geochemistry dissolution theory that the primary mechanism controlling the kinetics up to the end of the induction period is the undersaturation of this surface layer [94]. In addition, tri-calcium aluminate (C 3 A) reacts promptly with water from an early age to form calcium hydroaluminate (3CaO-Al 2 O 3 -Ca(OH) 2 -nH 2 O or hydroxy-A Fm ), as mentioned by Nguyen et al [32]. In the second mode, the peak value decreases and shifts toward a longer hydration time when the CEM III and GP are used.…”

Section: Data Processing/numerical Resultsmentioning

confidence: 88%

“…The main steps of the LCA assessment are: (i) determining the scope and limitations of OPC production and its partial replacement by more environmentally friendly SCMs, evaluating greenhouse gas emissions, and energy and raw material consumption; (ii) selecting output and input data using literature reviews to obtain average values for each necessary parameter [27][28][29][30][31][32][33], (iii) using the input data in the evaluation of the environmental impact of the mixtures proposed in this study by preceding the interpolation, and (iv) finally, presenting the results in terms of the decrease or increase in greenhouse gas emissions and energy and raw material consumption. The regulatory parameters of the two cements used, among others, are presented in Table 1, which includes the two types of cement used in this study (CEM I and CEM III).…”

Section: Introductionmentioning

confidence: 99%

“…The hydration modes identification of CEM I, CEM I + GP, CEM III, and CEM III + GP are shown in Figure 13a,b and Figure14a,b, respectively. In general, the proposed model identifies four main modes[32], including the initial reaction and slow reaction period (Mode 1), acceleration period (Mode 2), deceleration period (Mode 3), and stability period (Mode 4) in the history of heat flow. As shown in Figures13 and 14, the standard mortar with CEM I started an earlier acceleration period than the other mortars studied with a higher heat release.…”

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confidence: 99%

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Insight into the Behavior of Mortars Containing Glass Powder: An Artificial Neural Network Analysis Approach to Classify the Hydration Modes

et al. 2023

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In this paper, an artificial neural network (ANN) model is proposed to predict the hydration process of a new alternative binder. This model overcomes the lack of input parameters of physical models, providing a realistic explanation with few inputs and fast calculations. Indeed, four mortars are studied based on ordinary Portland cement (CEM I), cement with limited environmental impact (CEM III), and glass powder (GP) as the cement substitution. These mortars are named CEM I + GP and CEM III + GP. The properties of the mortars are characterized, and their life cycle assessment (LCA) is established. Indeed, a decrease in porosity is observed at 90 days by 4.6%, 2.5%, 12.4%, and 7.9% compared to those of 3 days for CEMI, CEMIII, CEMI + GP, and CEMIII + GP, respectively. In addition, the use of GP allows for reducing the mechanical strength in the short term. At 90 days, CEMI + GP and CEMIII + GP present a decrease of about 28% and 57% in compressive strength compared to CEMI and CEMIII, respectively. Nevertheless, strength does not cease increasing with the curing time, due to the continuous pozzolanic reactions between Ca(OH)2 and silica contained in GP and slag present in CEMIII as demonstrated by the thermo-gravimetrical (TG) analysis. To summarize, CEMIII mortar provides similar performance compared to mortar with CEMI + GP in the long term. This can later be used in the construction sector and particularly in prefabricated structural elements. Moreover, the ANN model used to predict the heat of hydration provides a similar result compared to the experiment, with a resulting R² of 0.997, 0.968, 0.968, and 0.921 for CEMI, CEMIII, CEMI + GP, and CEMIII + GP, respectively, and allows for identifying the different hydration modes of the investigated mortars. The proposed ANN model will allow cement manufacturers to quickly identify the different hydration modes of new binders by using only the heat of hydration test as an input parameter.

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Section: Data Processing/numerical Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Insight into the Behavior of Mortars Containing Glass Powder: An Artificial Neural Network Analysis Approach to Classify the Hydration Modes

et al. 2023

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“…The research currently conducted by many researchers on the Life Cycle Analysis of concrete with admixtures in the form of waste materials confirms their wide application [52][53][54]. Badino V. et al [52] states that the critical point in the analysis of recycled materials is the energy content of secondary materials; this case study of the use of LCA in the automotive industry is a good example of assessing the importance of this tipping point and triggering a discussion on the energy value of scrap.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the life cycle concrete with the addition of polypropylene fibers

Starczyk-Kołbyk

2024

Archives of Civil Engineering

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In accordance with the principles of sustainable construction, the results of Life Cycle Assessment (LCA) technique are useful inputs to the decision-making process when designing a building. This article presents such an analysis of a finished building product, which is a modified concrete mix. The calculations took into account the phases of the A1–A4 cycle, i.e. from the extraction of raw materials to the transport of the finished material to the construction site. Test results for concrete mixes and 28-day solid concrete are presented in tabular form. Based on all the test results obtained, it was found that the addition of waste polypropylene fibres has a positive effect on the key properties for the floor concrete. It has been found that proper processing of banding tapes or other polypropylene waste into macro-fibres can be a good example of proper waste management and can contribute to a significant reduction in residual waste. This additive is emission-free and sourced from recycling, making it an excellent alternative to commonly used dispersed reinforcement.

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“…Research is also being conducted on the Analysis of the life cycle of waste car glass [65][66][67]. Badino V., et al [65] state that a critical point of the analysis involving recycled materials is the energy content of the secondary materials; this case study of LCA application in the automotive industry offers a good example to evaluate the importance of this critical point and to give rise to discussion about the energy content of scrap.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Life Cycle and Properties of Concrete with the Addition of Waste Car Glass

Starczyk-Kołbyk

Małek

2023

Sustainability

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Sustainable construction aims to reduce the negative environmental impact of buildings throughout their life cycle, which includes design, construction, use, demolition and recycling. Taking into account the successive stages of the concrete life cycle and the elements of sustainable construction, the need to carry out research and analysis of the properties of concrete with additives was noticed in aspects of the concrete life cycle, e.g., the production stage, its durability during operation and the possibility of re-use after demolition. It was also noticed that the use of additives in the form of waste materials brings many benefits, including improvement of some parameters of concrete while saving natural resources. The article presents a detailed analysis of all four phases of the assessment of the life cycle of concrete modified with the addition of waste car glass: goal and scope definition, inventory analysis, impact assessment and interpretation. The progressive increase in the amount of glass waste produced each year around the world made it necessary to start the search for new recycling methods. During the research, concrete mixes were prepared according to a new, laboratory-calculated recipe containing glass fibers, natural aggregate (sand with a fraction of 0–2), crushed aggregate (basalt with a fraction of 2–8) and Portland cement (52.5 MPa). Concrete has been designed in four variants, which differ based on n the amount of tempered glass added. The first variant W1 was modified with 66.67 kg/m3, the second variant W2 contained the addition of 111.11 kg/m3 and the third variant W3—155.56 kg/m3. After 28 days, volumetric densities, values of the modulus of elasticity and thermal properties were determined; strength tests were also carried out during which the compressive strength (Reference = 70.30 MPa; W1 = 68.18 MPa; W2 = 70.13 MPa; W3 = 68.60 MPa), tensile strength in bending (Reference = 5.70 MPa; W1 = 5.63 MPa; W2 = 5.70 MPa; W3 = 5.27 MPa) and tensile strength in splitting were determined. On the remains of the samples from the strength tests, microstructure tests were performed. The conclusions and considerations on the further direction of the research were included in the discussion. The novelty of our research is related to the elimination of the glass waste processing process, which was described in detail in the Introduction.

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Life Cycle Assessment of Waste Glass Powder Incorporation on Concrete: A Bridge Retrofit Study Case

Cited by 10 publications

References 37 publications

Insight into the Behavior of Mortars Containing Glass Powder: An Artificial Neural Network Analysis Approach to Classify the Hydration Modes

Insight into the Behavior of Mortars Containing Glass Powder: An Artificial Neural Network Analysis Approach to Classify the Hydration Modes

Analysis of the life cycle concrete with the addition of polypropylene fibers

Analysis of the Life Cycle and Properties of Concrete with the Addition of Waste Car Glass

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