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2. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   Tile roofing traditionally consists of locally available materials such as clay, granite, terracotta or slate, though many modern applications contain concrete. Imbrex and tegula, style dating back to ancient Greece and Rome. Monk and nun, a style similar to Imbrex and tegula, but basically using two Imbrex tiles. Dutch roof tiles, Netherlands

3. Concrete - Wikipedia

   en.wikipedia.org/wiki/Concrete

   A single concrete block, as used for construction. Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. . Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material

4. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   The filling of cracks, fissures or voids in concrete for structural purposes (restoration of strength and load-bearing capability), or non-structural reasons (flexible repairs where further movement is expected, or alternately to resist water and gas permeation) typically involves the injection of low viscosity resins or grouts based on epoxy ...

5. Types of concrete - Wikipedia

   en.wikipedia.org/wiki/Types_of_concrete

   Researchers have been able to take mixtures beyond 3 percent strain, past the more typical 0.1% point at which failure occurs. In addition, the composition of the material supports self-healing. When cracks occur, extra dry cement in the concrete is exposed. It reacts with water and carbon dioxide to form calcium carbonate and fix the crack ...

6. Self-healing material - Wikipedia

   en.wikipedia.org/wiki/Self-healing_material

   Autogenous healing is the natural ability of cementitious materials to repair cracks. This ability is principally attributed to further hydration of unhydrated cement particles and carbonation of dissolved calcium hydroxide. [105] Cementitious materials in fresh-water systems can autogenously heal cracks up to 0.2 mm over a period of 7 weeks. [106]

7. Roman concrete - Wikipedia

   en.wikipedia.org/wiki/Roman_concrete

   As seawater percolated within the tiny cracks in the Roman concrete, it reacted with phillipsite naturally found in the volcanic rock and created aluminous tobermorite crystals. The result is a candidate for "the most durable building material in human history". In contrast, modern concrete exposed to saltwater deteriorates within decades. [17 ...