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Volume 8, Issue 3 (11-2025)
KCR 2025, 8(3): 117-123 |
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Meshkinfam Fard H. To Invent a Water-Resistant Cement Plaster. KCR 2025; 8 (3) :117-123
URL: http://journal.richt.ir/kcr/article-1-375-en.html
URL: http://journal.richt.ir/kcr/article-1-375-en.html
1 Master's Degree in Restoration and Conservation of Architectural Heritage, Department of Restoration of Historic Buildings and Textures, School of Architecture, College of Fine Arts, University of Tehran, Tehran, Iran.
Abstract: (521 Views)
Concrete, as one of the most widely used contemporary construction materials, possesses distinctive characteristics such as high compressive strength, plasticity, availability, and cost-effectiveness, which have secured its prominent position in modern architecture and structural engineering. Several contemporary architectural works in Iran and across the world, registered in national and international heritage lists, have been constructed using exposed concrete. Nevertheless, the exposure of these structures to diverse climatic conditions and urban pollution, particularly over extended periods results in erosion and both visual and structural alterations in concrete. Deteriorative agents such as acid rain, atmospheric chemical compounds, soluble salts, and erosion caused by wind and water gradually reduce durability and weaken the concrete structure. This process not only leads to a decline in visual quality but also renders protective and restorative interventions inevitable. Accordingly, safeguarding concrete surfaces against environmental and chemical agents constitutes a vital approach to the preservation and sustainability of such structures. In response to this challenge, the application of innovative technologies can play a significant role in enhancing the durability of concrete. One notable achievement in this regard is the invention of a waterproof cementitious protective coating, registered in 2016 (1395 in the Iranian calendar) and officially approved by Shiraz University. This research was conducted with an applied orientation, initially introducing the invention and the conceptual origins of the idea. Subsequently, the study elaborated on its justification, nature, and objectives, and presented the results of performance tests under intensified environmental conditions and water absorption experiments, thereby demonstrating its practical applicability. The results of the 24-hour water absorption test indicate that this coating, with an absorption rate of only 0.3%, exhibits remarkable impermeability to moisture compared to the reference cement sample, which recorded an absorption rate of 14.8%. Furthermore, the coating, with a minimum thickness of one millimeter, demonstrates waterproofing properties as well as resistance to efflorescence and acidic environments. Ease of application and adaptability to diverse surfaces are additional advantages of this technology. Importantly, the waterproof cementitious coating provides effective protection for concrete with minimal visual impact, thereby preserving the original appearance of the surface without noticeable alteration.
Keywords: Concrete, Exposed concrete, Concrete conservation, waterproofing coating, Water-Resistant Cement Plaster.
Type of Study: Research, Original, Regular |
Subject:
Archaeometry and authenticity assessment of museum objects and historical-cultural properties.
Received: 2025/11/19 | Accepted: 2025/11/30 | Published: 2025/12/21
Received: 2025/11/19 | Accepted: 2025/11/30 | Published: 2025/12/21
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