Long-term effects of waste brick powder addition in the microstructure and service properties of mortars

Ortega, José Marcos; Letelier, Viviana; Solas, Carlos; Moriconi, Giacomo; Climent, M.Á.; Sánchez, Isidro

doi:10.1016/j.conbuildmat.2018.06.161

Cited by 101 publications

(52 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recently, several works have been published [14,38,46] where this non-destructive and global technique has been used for analysing the evolution of the pore structure of different cement-based materials (pastes, mortars and concretes) with additions, obtaining very good results. Some of these additions are well-known and widely used, such as slag and fly ash [35], and others are relatively new, like waste brick powder [36] and glass powder [37]. Impedance spectroscopy has also been successfully used for studying how aggressive and non-optimum environments [14,38] affect the evolution of the microstructure of cement pastes, mortars and concretes.…”

Section: Impedance Spectroscopymentioning

confidence: 99%

“…This technique has recently been applied for cement-based materials which incorporate different kinds of additions. Some of these additions are well-known and widely used, such as slag and fly ash [35], and others are relatively new, like waste brick powder [36] and glass powder [37]. Impedance spectroscopy has also been successfully used for studying how aggressive and non-optimum environments [14,38] affect the evolution of the microstructure of cement pastes, mortars and concretes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

et al. 2019

Self Cite

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

Section: Impedance Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…of structures [45]. In this sense, these materials seek to improve the physical, mechanical and thermal properties [46], often using recyclable materials [47,48]. Based on this, this work proposes to carry out a sensitivity study of the radiative and thermal properties of building materials in the urban microclimate, varying their magnitudes and verifying their impact on the variation of UHI intensity, using mesoscale atmospheric models.…”

Section: Study Areamentioning

confidence: 99%

“…Also, these materials have sought to reduce the environmental impact of the building industry by including aggregate materials in the composition of structures [45]. In this sense, these materials seek to improve the physical, mechanical and thermal properties [46], often using recyclable materials [47,48].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of Radiative and Thermal Properties of Building Material in the Urban Atmosphere

et al. 2019

View full text Add to dashboard Cite

In the context of the impact of urbanization on climate change, this work aims to evaluate the sensitivity of the thermal and radiative properties of building surfaces in urban areas to the urban heat island intensity, a local scale meteorological phenomenon. For this, variations of albedo values, emissivity, thermal conductivity and heat capacity of roofs, streets and walls were simulated through an urban scheme coupled with the BRAMS mesoscale atmospheric model for the metropolitan area of São Paulo, considering two main urban types. The simulations show that, in general, looking for cold surface situations, the change of building material can contribute to a reduction of up to 3 °C for São Paulo. In addition, the role of orientation and the typological characteristics of constructions should be taken into account. In this sense, it is expected that this work guides civil engineers and builders to search for new materials in order to reduce the effects of urbanization on the local climate.

show abstract

“…As a result, many studies have focused on reducing the environmental damages associated with its manufacturing. Several investigations have been based on one solution which is related to the study of the effects of substituting different concrete constituents with reused materials [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

The Use of Volcanic Powder as a Cement Replacement for the Development of Sustainable Mortars

et al. 2020

Self Cite

View full text Add to dashboard Cite

Currently, reduction of environmental effects of the cement industry is an issue of global interest and one of the alternatives is to replace clinker with additions such as volcanic powder. The purpose of this work is to study the influence of up to 400 hardening days of volcanic powder, obtained from the last eruption of the Calbuco volcano (Chile), on the pore structure, mechanical performance, and durability-related properties of mortars which incorporate up to 20% volcanic powder as a substitution for clinker. In addition, an evaluation of greenhouse gases emissions was performed in order to quantify the possible environmental benefits of incorporating the volcanic powder in the mortars. The results obtained indicated that mortars with contents of 10% and 20% of volcanic powder had adequate service properties and improved all durability-related properties overall as compared with those noted for ordinary Portland cement. Additionally, the use of up to 20% volcanic powder makes it possible to reduce the CO2 emissions of mortars by almost 20%, demonstrating the advantages of incorporating this addition in mortars.

show abstract

Long-term effects of waste brick powder addition in the microstructure and service properties of mortars

Cited by 101 publications

References 39 publications

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

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

Sensitivity of Radiative and Thermal Properties of Building Material in the Urban Atmosphere

The Use of Volcanic Powder as a Cement Replacement for the Development of Sustainable Mortars

Contact Info

Product

Resources

About