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Earthen plasters are becoming more popular in interior design due to its sustainable and eco-friendly characteristics. The plaster influences the thermal comfort, the indoor air quality and energy efficiency in a positive way. During the drying process however, there is shrinkage which affects its ability to adhere properly to the surface. [3 ...
Cracks form in case of a too short, or too poor, curing when young concrete has not yet developed a sufficient early strength to withstand tensile stress caused by undesirable and premature drying. Cracks development occurs when early-age concrete is insufficiently protected against desiccation and too much water evaporates with heat because of ...
In practice, creep during drying is inseparable from shrinkage. The rate of creep increases with the rate of change of pore humidity (i.e., relative vapor pressure in the pores). For small specimen thickness, the creep during drying greatly exceeds the sum of the drying shrinkage at no load and the creep of a loaded sealed specimen (Fig. 1 bottom).
Where plaster has become severely damaged by ground salts there is little argument about the need to replaster. However, there is considerable debate about: The extent of replastering required; The use of hard sand:cement renders to replaster as part of a rising damp treatment; Plaster removed from a wall as part of a rising damp treatment.
Extreme cold causes stress cracks in windows to spread. Brown says he's not sure homeowners can do much to keep the cracks from elongating, but he does have some suggestions. Among them:
Environmental Stress Cracking (ESC) is one of the most common causes of unexpected brittle failure of thermoplastic (especially amorphous) polymers known at present. According to ASTM D883, stress cracking is defined as "an external or internal crack in a plastic caused by tensile stresses less than its short-term mechanical strength".
When the plaster is dry, the pH falls to about 8.6. Non-hydraulic lime plaster requires moisture to set and has to be prevented from drying for several days. The number of qualified tradesmen capable of plastering with lime has declined due to industrialization, deskilling of trade crafts, and widespread adoption of drywall and gypsum veneer ...
The simple reason is that "bacteria can enter eggs through cracks in the shell," most commonly salmonella. The CDC estimates that only about one in every 20,000 eggs are contaminated with salmonella.