Scholarlink

<p>Thermal exposure is a critical challenge for carbonate stones as widely used materials in architecture, given their aesthetic and mechanical characteristics. This study examines the behaviour of eleven limestones and marbles heated to 300&#xa0;°C and 600&#xa0;°C, assessing bulk density, capillary absorption, compressive strength, and colour variation. A penalty-based framework was applied to evaluate performance against thresholds adapted to architectural uses such as cladding, masonry, slabs, and columns. At 600&#xa0;°C, some lithologies showed up to 30% strength loss, and water absorption increased by up to two orders of magnitude. Marbles, particularly coarse-grained types, were most affected, while compact limestones (e.g., AV, BML) retained acceptable performance. These results highlight the need for lithology-specific assessment under thermal stress and support post-fire decision-making. The proposed framework offers a practical tool for material selection and rehabilitation, while emphasising the importance of refining thresholds and integrating complementary evaluation methods.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A penalty-based evaluation framework for assessing the post-fire functional suitability of carbonate architectural stones

  • 期刊论文

  • 发表日期：

    2025年12月10日

查看全文
  • Roberta Lobarinhas,
  • Gustavo Paneiro,
  • Amélia Dionísio

摘要

Thermal exposure is a critical challenge for carbonate stones as widely used materials in architecture, given their aesthetic and mechanical characteristics. This study examines the behaviour of eleven limestones and marbles heated to 300 °C and 600 °C, assessing bulk density, capillary absorption, compressive strength, and colour variation. A penalty-based framework was applied to evaluate performance against thresholds adapted to architectural uses such as cladding, masonry, slabs, and columns. At 600 °C, some lithologies showed up to 30% strength loss, and water absorption increased by up to two orders of magnitude. Marbles, particularly coarse-grained types, were most affected, while compact limestones (e.g., AV, BML) retained acceptable performance. These results highlight the need for lithology-specific assessment under thermal stress and support post-fire decision-making. The proposed framework offers a practical tool for material selection and rehabilitation, while emphasising the importance of refining thresholds and integrating complementary evaluation methods.