Cement mortars with ceramic molds shells and paraffin waxes wastes: Physical and mechanical behavior

Cunha, Sandra; Tavares, André; Aguiar, José; Castro, Fernando de

doi:10.1016/j.conbuildmat.2022.127949

Cited by 13 publications

(9 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 1. Chemical composition of obtained crystals from the water resulting from the ceramic mold shells washing [10]. Figure 3 presents the surface and geometry of the ceramic mold shells through scanning electron microscopy observations.…”

Section: Ceramic Mold Shellsmentioning

confidence: 99%

“…The materials selected for the development of mortars were based on previous work by the research team [10,12]. The Portland cement used was a CEM I 42.5R, produced by a Portuguese company (Secil, Lisbon, Portugal).…”

Section: Materials Characterizationmentioning

confidence: 99%

“…In 2020, the foundry industry produced about 103,300 thousand tons of castings [9], produced by about 35,000 active foundry companies [10]. The main world producers are China, India, and the United States, representing about 50.3%, 10.9%, and 9.4% of world casting production, respectively [9].…”

Section: Introductionmentioning

confidence: 99%

“…Taking into account the expansion of the lost wax casting industry, it is also important to develop solutions that allow the reuse of ceramic mold shells and paraffin wax waste. This research team has been making efforts in an attempt to reuse these wastes [10,12]. Thus, during these preliminary works, the focus of the work was the valorization of the ceramic mold shells and paraffin wax.…”

Section: Introductionmentioning

confidence: 99%

“…The presence of these wastes leads to the development of some microcracks in the mortar microstructure, especially the presence of ceramic mold shells, due to their chemical composition. However, the incorporation of 20% of paraffin wax led to a decrease of about 17%, 27%, and 64% in the flexural strength, compression strength, and adhesion of the mortars, respectively [10]. This situation was evaluated and solved by Cunha et al [12] in a study in which they evaluated different methods to minimize the effect of the incorporation of ceramic mold shell wastes.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Performance of Eco-Friendly Cement Mortars Incorporating Ceramic Molds Shells and Paraffin Wax

Cunha,

Silva,

Aguiar

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

The lost wax foundry industry has been rapidly expanding in recent years, generating a large amount of waste due to the fact that most of the durable goods include castings and the need for dimensional precision castings for specific purposes, such as the automotive and aeronautics sectors. The waste produced by this industry is currently being deposited in landfills because practical applications are not known and cannot be reused in a new production process, and recycling is also a challenge because of the economics of the process. Thus, the main objective of this study consists in the incorporation of the produced wastes by the lost wax casting foundry industry (ceramic molds shells and paraffin wax) as substitutes for natural aggregate in exterior coatings mortars, evaluating their behavior under normal operating conditions and against freeze–thaw actions. The obtained results revealed porosity, flexural strength, and compressive strength adequate under normal operating conditions. The freeze–thaw performance of the mortars with waste incorporation was similar to the mortars developed with natural aggregates. Thus, the potential of the ceramic mold shells and paraffinic waxes utilization in cementitious mortars for the construction sector was demonstrated.

show abstract

Section: Ceramic Mold Shellsmentioning

confidence: 99%

Section: Materials Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Performance of Eco-Friendly Cement Mortars Incorporating Ceramic Molds Shells and Paraffin Wax

Cunha,

Silva,

Aguiar

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Cement Mortars with Incorporation of Foundry Industry Wastes: Physical, Mechanical and Durability Behavior

Cunha,

Silva,

Aguiar

2024

Springer Proceedings in Materials

View full text Add to dashboard Cite

Planet Earth is facing real challenges that require urgent and significant measures. It is necessary to give a new direction to the construction sector, making it essential to change the way that raw material is selected, giving preference to industrial by-products. The utilization of industrial wastes allows minimize the high consumption of natural raw materials, energy consumption and waste deposition in landfills. It is important to note that the use of waste in the construction industry is a great opportunity, however, the heterogeneity of these materials and sometimes their contamination can compromise the durability. The lost-wax process in foundry industry is currently an expanding area, so more and more manufacturing industries have serious problems related to their waste management. During its production process, wastes of ceramic mold shells and paraffinic wax are generated and until now any practical application is known. The main objective of this study was the correlation between the physical, mechanical behavior and durability of cement mortars with incorporation of paraffin wax and ceramic mold shells. The main results revealed a decrease in water absorption, flexural strength, and compressive strength of the mortars, along with a slight increase in degradation during freeze-thaw cycles. Additionally, a correlation was observed between the physical, mechanical performance, and durability of the mortars. This included factors such as water absorption through immersion and capillarity, as well as the relationship between compressive strength and the mass loss suffered during freeze-thaw tests.

show abstract

Self-healing recovery and micro-structural properties of slag/fly-ash based engineered cementitious composites under chloride environment and tidal exposure

Zhao¹,

Li²,

Liu³

et al. 2022

Cement and Concrete Composites

View full text Add to dashboard Cite

Cement mortars with ceramic molds shells and paraffin waxes wastes: Physical and mechanical behavior

Cited by 13 publications

References 59 publications

Performance of Eco-Friendly Cement Mortars Incorporating Ceramic Molds Shells and Paraffin Wax

Performance of Eco-Friendly Cement Mortars Incorporating Ceramic Molds Shells and Paraffin Wax

Cement Mortars with Incorporation of Foundry Industry Wastes: Physical, Mechanical and Durability Behavior

Self-healing recovery and micro-structural properties of slag/fly-ash based engineered cementitious composites under chloride environment and tidal exposure

Contact Info

Product

Resources

About