Binders alternative to Portland cement and waste management for sustainable construction—part 1

Coppola, Luigi; Bellezze, T.; Belli, Alberto; Bignozzi, Maria; Bolzoni, F.; Brenna, Andrea; Cabrini, Marina; Candamano, Sebastiano; Cappai, Marta; Caputo, Domenico; Carsana, Maddalena; Casnedi, Ludovica; Cioffi, Raffaele; Cocco, Ombretta; Coffetti, Denny; Colangelo, Francesco; Coppola, Bartolomeo; Corinaldesi, Valeria; Crea, F.; Crotti, Elena; Daniele, Valeria; Gisi, Sabino De; Delogu, Francesco; Diamanti, Maria Vittoria; Maio, Luciano Di; Mundo, Rosa Di; Palma, Luca Di; Donnini, Jacopo; Farina, Ilenia; Ferone, Claudio; Frontera, Patrizia; Gastaldi, Matteo; Giosuè, Chiara; Incarnato, Loredana; Liguori, Barbara; Lollini, Federica; Lorenzi, Sergio; Manzi, Stefania; Marino, O.; Marroccoli, Milena; Mascolo, Maria Cristina; Mavilia, Letterio; Mazzoli, Alida; Medici, Franco; Meloni, Paola; Merlonetti, Glauco; Mobili, Alessandra; Notarnicola, Michele; Ormellese, Marco; Pastore, Tommaso; Pedeferri, MariaPia; Petrella, Andrea; Pia, Giorgio; Redaelli, Elena; Roviello, Giuseppina; Scarfato, Paola; Scoccia, G; Taglieri, Giuliana; Telesca, Antonio; Tittarelli, Francesca; Todaro, Francesco; Vilardi, Giorgio; Yang, Fan

doi:10.1177/2280800018782845

Cited by 54 publications

(48 citation statements)

References 221 publications

(329 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The addition of the hardener from rice husk ash to the soda-lime-silica glass solution is viewed as a viable and cleaner solution to optimize the reactivity of chemical ingredient from waste glass and therefore improve the sustainability of geopolymer cements, mortars and concretes. The low values of the apparent density (1.56 g/ cm 3 ) and the compressive strength (2.6 MPa) of geopolymer cement from soda-lime-silica glass solution, GPS0, could indicate that soda-lime glass solution (H1) could be used for producing sustainable lightweight geopolymer cements.…”

Section: Resultsmentioning

confidence: 99%

“…According to Tittarelli et al [2], fly ash-based geopolymers are protective for galvanized steel reinforcements. Regarding the environmental impact, the values of hazardous elements classify geopolymers as sustainable materials [3]. But commercial sodium silicate is generally used as a hardener by several researchers for producing geopolymer cements.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of the reactivity of soda–lime–silica glass solution as a hardener for producing geopolymer materials

et al. 2019

View full text Add to dashboard Cite

The aiming target of this study is to improve the reactivity of the soda-lime-silica glass solution as a hardener for producing metakaolin-based geopolymer cements. The hardeners with molar ratios SiO 2 /Na 2 O equal to 1.5 from rice husk ash and waste glass were prepared. Due to the low dissolution of waste glass, the molar ratio SiO 2 /Na 2 O in soda-lime-silica glass solution is less than 1.5 suggesting thus the lower soluble silica content. In order to compensate for the deficiency of soluble silica in soda-lime-silica glass solution, the hardener from rice husk ash is added to the soda-lime-silica glass solution at different percentage such as 0, 20, 30, 40, 50, 60, 70, 80 and 100 wt%. The reactivity of the obtained hardeners was evaluated by using them for producing geopolymer cements. The X-ray pattern and infrared spectrum of residual waste glass indicate the higher intensity of the broad hump structure and the higher value of the wavenumber of the main band, respectively. This corresponds to the higher amount of glass phase contained in the residual waste glass. It was found that the values of the compressive strengths and the apparent density increase with increasing the addition of hardener from rice husk ash to the one from waste glass. The micrographs of geopolymer cements from hardeners containing 40, 50 and 100 wt% of sodium waterglass from rice husk ash are homogeneous and compact microstructure. This implies the formation of the higher connectivity and the long chain of poly(sialate-siloxo) network. The new approach for the preparation of a reactive hardener from the waste glass is found promising for the significant reduction of the greenhouse gas emitted during the production of geopolymers.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of the reactivity of soda–lime–silica glass solution as a hardener for producing geopolymer materials

et al. 2019

View full text Add to dashboard Cite

show abstract

“…A great deal of research has been carried out on the utilization of either natural [5][6][7][8][9] or synthetic [10][11][12][13] zeolites, in place of natural pozzolans, for manufacturing blended cements and in the preparation of a sustainable binder [14,15]. The large specific surface area, featuring an intrinsic metastability (see, e.g., [16]), gives the zeolite a good pozzolanic activity.…”

Section: Introductionmentioning

confidence: 99%

Pozzolanic Activity of Zeolites: The Role of Si/Al Ratio

et al. 2019

Self Cite

View full text Add to dashboard Cite

A great challenge of research is the utilization of natural or synthetic zeolites, in place of natural pozzolans, for manufacturing blended cements. The difficulties of interpretation of the pozzolanic behavior of natural zeolite-rich materials and the role played by their nature and composition can be overcome by studying more simple systems, such as pure synthetic zeolites. This study aims at investigating the pozzolanic ability of isostructural zeolites with different framework compositions, such as three sodium zeolites of the faujasite (FAU) framework type: LSX, X, and Y. The pozzolanic activity has been estimated by thermogravimetry and X-ray diffraction analysis. The overall outcome of the investigation is that the zeolite structure affects its pozzolanic activity, as zeolites with similar framework densities exhibit distinct abilities to fix lime. Moreover, the framework composition is effective either from a kinetic point of view or on the total amount of fixed lime. Zeolite X appears to possess the best average features.

show abstract

“…The construction sector is a major contaminant industrial sector [11], so the lessening of its CO 2 emissions is now a relevant issue of study. One way to reduce those emissions is by substituting clinker with additions [12][13][14] and the majority of them are pollutant residues originated from other industrial processes, such as fly ash, ground granulated blast-furnace slag and silica fume [15][16][17][18][19][20]. In relation to the use of red mud in cement-based materials, considering its composition, it is possible that it has pozzolanic activity and some research has pointed out this possibility [21,22].…”

Section: Introductionmentioning

confidence: 99%

Effects of Red Mud Addition in the Microstructure, Durability and Mechanical Performance of Cement Mortars

et al. 2019

View full text Add to dashboard Cite

Recently, there has been a great effort to incorporate industrial waste into cement-based materials to reach a more sustainable cement industry. In this regard, the Bayer process of obtaining alumina from bauxite generates huge amounts of waste called red mud. Few research articles have pointed out the possibility that red mud has pozzolanic activity. In view of that, the objective of this research is to analyse the short-term effects in the pore structure, mechanical performance and durability of mortars which incorporate up to 20% of red mud as a clinker replacement. As a reference, ordinary Portland cement and fly ash Portland cement mortars were also studied. The microstructure was characterised through mercury intrusion porosimetry and non-destructive impedance spectroscopy, which has not previously been used for studying the pore network evolution of red mud cement-based materials. The possible pozzolanic activity of red mud has been checked using differential scanning calorimetry. The non-steady state chloride migration coefficient and the mechanical properties were studied too. According to the results obtained, the addition of red mud entailed a greater microstructure refinement of the mortar, did not worsen the resistance against chloride ingress and reduced the compressive strength compared to control binders.

show abstract

Binders alternative to Portland cement and waste management for sustainable construction—part 1

Cited by 54 publications

References 221 publications

Improvement of the reactivity of soda–lime–silica glass solution as a hardener for producing geopolymer materials

Improvement of the reactivity of soda–lime–silica glass solution as a hardener for producing geopolymer materials

Pozzolanic Activity of Zeolites: The Role of Si/Al Ratio

Effects of Red Mud Addition in the Microstructure, Durability and Mechanical Performance of Cement Mortars

Contact Info

Product

Resources

About