This study aims to conduct a comprehensive scientometric review of Lightweight Artificial Aggregates ( LWAs ), using the Scopus database as the main data source. The choice of Scopus was motivated by the superior availability of documents compared to the "Web of Science", allowing the analysis of more than 510 articles related to the topic. The key expression "artificial lightweight aggregate " was used in the research, and document summaries were read to ensure their relevance to the topic. The justification for this study lies in the need to understand and map the current scientific scenario of LWAs , highlighting their growing importance in civil construction. The analysis Scientometrics adopted scientific mapping as a method, using the VOSviewer software in conjunction with the Scopus analyzer. This approach allowed a detailed assessment of the interconnections between disciplines, authors, publications and institutions, providing a comprehensive view of scientific development related to LWAs . The results revealed the location of 512 relevant articles in the bibliographic search, indicating a significant detection of research on LWAs in the last decade. Although there is progress in this field, it is highlighted that studies on LWAs are still relatively recent compared to commercial aggregates such as expanded clay This comprehensive scientific mapping contributes to a deeper understanding of the research domain, identifying recent advances and areas in need of further exploration, guiding future research and decisions in the construction sector.

The growing use of 3D concrete printing has increased the need for cementitious mixtures that combine adequate mechanical performance with lower environmental impacts and production costs. However, these requirements may conflict, making mixture selection a multi-criteria problem. This study assessed nine cementitious mixtures for 3D concrete printing by integrating Life Cycle Assessment (LCA) with the MARS-SC multi-criteria decision-making method. We adopted a cradle-to-gate system boundary and conducted the environmental assessment according to ISO 14040 and ISO 14044 using SimaPro and the Ecoinvent database. We integrated environmental, functional, and economic indicators using the Methodology for the Relative Sustainability Assessment of Building Technologies (MARS-SC) to obtain an overall sustainability score. The mixture containing 40% limestone filler and 10% metakaolin showed the best environmental performance, with a global warming potential of 358 kg CO₂ eq/m³. The mixture reduced the GWP by 45.01% and 54.28% compared with two mixtures with higher cement contents and without partial cement replacement. However, this environmental advantage did not result in the highest overall sustainability score because of lower functional and economic performance. When the three dimensions were considered together, Blf30 and Blf40 achieved the highest sustainability scores (NS = 0.66). Although both mixtures had lower mechanical performance than the cement-rich mixtures, their environmental and economic results led to a more favorable overall assessment. The integrated analysis therefore shows that reducing environmental impacts does not, by itself, necessarily produce the most sustainable mix.