评估在西班牙遗产中的砂和石头之间的盐流动的新方法
Linde Pollet1,2, Andrea Antolín-Rodríguez3, Josep Gisbert-Aguilar4
1European Commission, Joint Research Centre (JRC), 2400 Geel, Belgium.
Materials (Basel, Switzerland)
|July 30, 2025
概括
与混合波特兰水泥 (BPC) 相比,活性材料 (AAM) 可能会导致遗产石的风险,因为与混合波特兰水泥 (BPC) 相比,盐分释放量更高. 需要进一步的研究来确认AAM与可持续建筑和纪念碑保护的兼容性.
科学领域:
- 建筑材料科学 建筑材料科学
- 遗产保护科学 遗产保护科学
- 地质化学 地质化学
背景情况:
- 可持续的水泥材料对于减少建筑行业对环境的影响至关重要.
- 活性材料 (AAMs) 为传统粘合剂提供了更绿色的替代品.
- 遗产结构中AAM与天然石的兼容性,特别是关于盐的迁移,尚不清楚.
研究的目的:
- 开发一种用于评估固体材料中的盐运动的新方法.
- 评估AAM和混合波特兰水泥 (BPC) 与两种天然石材 (Boñar和Silos) 的兼容性.
- 了解使用替代粘合剂时盐迁移的风险和遗产石的潜在损害.
主要方法:
- 进行了毛细体和浸泡测试,以评估水的吸收,盐的运输和花.
- 导电性映射和X射线衍射 (XRD) 分析被用来识别盐类型和流动性.
- 使用博纳尔和西洛斯石头的AAM和BPC之间的比较分析.
主要成果:
- 锡洛斯石材的毛细度明显高 (0.148公斤·米-2·t-0.5),比博纳尔石材 (0.0166公斤·米-2·t-0.5).
- 与BPC相比,基于AAM的砂释放的可溶盐要多得多,主要是硫酸.
- BPC显示盐的流动性较低,盐的成分不同.
结论:
- 由于它们倾向于释放可溶盐,AAM对遗产石具有潜在的风险.
- 替代粘合剂和遗产石材之间的兼容性评估对于保护至关重要.
- 虽然没有观察到直接的损害,但对盐运输机制的长期研究对于防止遗产结构加速恶化至关重要.
更多相关视频
相关概念视频
Mortar Joint Deterioration in Masonry
165
Mortar joint deterioration is a significant concern in masonry structures, with water accumulation in the joints leading to damage from freeze-thaw cycles. The repeated expansion of water during freezing and its melting during thawing develop and propagate cracks in the masonry joints. Eventually, this leads to the spalling of mortar from the joints, loosening masonry units and weakening the structure. The deteriorated mortar joints are also vulnerable to moisture intrusion into the walls.
The...
The...
165
Mortar Properties
189
Mortar properties encompass a range of characteristics crucial for construction and masonry work, including workability, water retention, bond strength, durability, compressive strength, volume change, and appearance. Workability refers to mortar's ability to be easily applied and manipulated without sagging or falling off surfaces, which is important for efficient masonry unit placement and alignment. Water retention is essential to prevent the mortar from losing moisture too quickly to...
189
Mortar
302
Mortar, a mixture of Portland cement, hydrated lime, sand, and water, is a crucial binding material in construction. Its primary function is to join masonry units together, filling gaps and ensuring a uniform distribution of weight across the structure. This helps in preventing potential weaknesses. Mortar also serves as a protective barrier against environmental elements such as water and wind, thereby safeguarding the interior of the structure. It also compensates for surface irregularities...
302
Mortar Joints in Brick Masonry
180
Mortar joints play a critical role in brick masonry, filling the spaces between brick to bind them together and provide structural integrity and strength. The thickness of these joints is variable, typically ranging from less than one-fourth inch to over half an inch, based on structural needs and specific applications.
The process of joint tooling is implemented as the mortar begins to harden. This technique involves compacting and shaping the mortar to enhance both the appearance and the...
The process of joint tooling is implemented as the mortar begins to harden. This technique involves compacting and shaping the mortar to enhance both the appearance and the...
180
Testing Water Quality
187
When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
187
Stone Masonry
181
Stone masonry is a construction technique that uses individual stones to build structures and can be categorized into two main types: rubble and ashlar. Rubble masonry uses uneven, naturally shaped stones such as river rocks or fragments from quarries. This method often requires the mason to select and possibly shape each stone to fit the designated space, ensuring a proper build, even with irregular stone sizes and shapes. Ashlar masonry, on the other hand, employs uniformly cut stones that...
181


