Polymer concrete

What is it about?

Improvement in Civil Engineering and developing industries, is due to instant need for constructing materials whit new and efficient executive proportions. Polymer concrete is new combination which is first constructed in United States since 1950. One of the most important reasons for developing polymer concrete could be known the Portland concrete weakness. Most important weak points in Portland concrete can be divided in: Crackup Being alkaline Permeability (against soluble salt, water and etc.) Steel corrosion in concrete Low resistance against warm and cold degrees Low tension

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Why is it important?

There are many ways to correct these weaknesses; such as using sheets (to correct No 3 and 5) and cathode protection (for No 4) and… that each one of them can correct just one weakness. In some places in which concrete is infested by most pre-mentioned weaknesses (like bridge bases), it causes too many damages that none of these ways can be a good solution in long time (of project or exploitation). In additional to improve concrete mechanical properties, polymer concrete cause vast increase abrasion resistance, resistance to soluble acid, alkali and chemical soluble and also tolerance against warm and cold degrees. These concrete also noticeably decrease among of materials. One of the most important reasons that causes large improvement in concrete mechanical properties rather than regular concrete can be found in these concretes break mechanism and in regular concrete, matrix break is because of losing hydrated cement bonds; but in these kind of concretes, because of strong covalent bond, most of the time, the break occurs in aggregate. For this reason, strong Quartz aggregate, Basalt and Granite are used in polymer concrete. Other important and searchable polymer concrete feature is its crawl and servicing degree which requires real cognition of its behavior and also this concrete optimization. Polymer concrete is a combination of materials in which aggregates are attached by a polymer glue in a condensed place. Polymer concrete contains no hydrated cement. Though, Portland cement can be used in polymer concrete as aggregates or filler. Polymer concrete properties mostly depend on the amount of polymer that is used and its properties. Aggregates and filler materials also have effect on polymer concrete properties.

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