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It is the considerable forces internally created by the expansion of the iron corrosion products (about 6 – 7 times less dense than metallic iron, so 6 – 7 times more voluminous) that cause the cracks in the concrete matrix and destroy reinforced concrete. In the absence of iron (and without some harmful chemical degradation reactions also ...
Some rust species form perennial systemic infections that may cause plant deformities such as growth retardation, witch's broom, stem canker, galls, or hypertrophy of affected plant parts. Rusts get their name because they are most commonly observed as deposits of powdery rust -coloured or brown spores on plant surfaces.
Cronartium ribicola is a species of rust fungus in the family Cronartiaceae that causes the disease white pine blister rust. Other names include: Rouille vésiculeuse du pin blanc (French), white pine Blasenrost (German), moho ampolla del pino blanco (Spanish).
Pour enough white vinegar into the container to fully submerge the rusty object. Add a generous amount of salt to the vinegar and stir until it dissolves. The exact proportions aren't critical.
Concrete cancer may refer to: Rebar corrosion and spalling of the concrete cover above rebar caused by the rust expansion and accelerated by chloride attack and ...
ASTM C1293: "Test Method for Concrete Aggregates by Determination of Length Change of Concrete Due to Alkali-Silica Reaction". It is a long-term confirmation test (1 or 2 years) at 38 °C in a water-saturated moist atmosphere (inside a thermostated oven) with concrete prisms containing the aggregates to be characterised mixed with a high-alkali ...
Public health experts are warning of a ‘quad-demic’ this winter. Here’s where flu, COVID, RSV, and norovirus are spreading
The disease cycle of Puccinia schedonardii does not vary from other rust disease cycles. This pathogen is heteroecious and exhibits a polycyclic disease cycle. Puccinia schedonnardii overwinters as teliospores that are produced in telia on the alternate host. In the spring, the teliospores germinate to produce basidiospores.