Saturday, June 28, 2008

Big Fat Brazilian Azz

COLLECTION TYPES AND USES

Types:
3 / 8 " are found in rocks of andesitic type. It is used in the manufacture of blocks and other precast elements.
1 / 2" - 3 / 4 " rocks are found in dolomitic limestone type, andesite and basalt andesítico.Es the most common and is used in concrete normal resistance to compression and in the manufacture of tubes and mixed.
1 "- 1 1 / 2" are found in dolomitic limestone rock type, basalt andesite and andesite. It is used in high strength concrete and special concrete flexural strength.
Applications:
is used as appends to the concrete: it binds to a paste (portland cement and water) to form a dough like a rock because the paste hardens due to chemical reaction between the cement and water.
constitutes approximately 60 to 75% of the total volume of concrete , so your selection is important: You must have an adequate strength and resistance to exposure conditions nterperie not contain materials that could cause concrete deterioration , as its function in concrete is to create a rigid skeleton stable and what is achieved by attaching it with cement and water.
How much stone was used in a mixture depends on the strength that is required at the end. An example: if you use stone 1 1 / 2 inches and you want high-strength concrete (about 300 kilos per square centimeter, three times for mortar for floors and walls) for each sack of cement to use a water bottle , 2 1 / 3 cans sand and 4 3 / 4 stone boats.

The stone absorbs moisture, so if the humidity is lower than the absorption, more water should be added to concrete, to compensate. It should also be free of organic matter, foreign matter and hazardous materials, which affect the quality of concrete.
is important ongoing verification of the quality of this aggregate to keep a lid on water demand and the homogeneity of the mixture.

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