Products >> Broken and Granulated
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BROKEN AND GRANULATED
Broken and granulated cork are products obtained by grinding scrap, cork waste, virgin cork and bits. They are mainly used in civil construction for thermal and acoustic insulation (filling spaces with mortar mix) and the production of rolls of agglomerated cork, which can be had in several granulometries.
According to rigorous tests carried out by LNEC - Lisbon (National Laboratory of Civil Engineering) Broken is an excellent choice for lightweight concrete and with high insulation capabilities.
For 1 quantity of concrete, the lightweight concrete has a compression rupture (LNEC E226) of 19kN (compression strength) and 0.5MPa of tensile strength, while for 1.5 the amount of concrete has very different results, particularly 38kN (strength of rupture) and 0.9MPa stress rupture. That is, increasing by 0.5 the amount of cement, lightweight concrete is very resistant to rupture by compression.
Classified in ISO 8301:1991 it has a thermal conductivity of 0.14 W / m ° C (for 1 quantity of cement) and 0.17 W / m ° C for 1.5 quantity of cement. Here, the lightweight concrete is presented as an excellent insulator.
Regarding the flexural strength, the breakdown is classified as standard - LNEC E227, and has a breaking strength of 1.3 kN and a tensile strength of 0.2 MPa (for 1 amount of cement) and values of tensile strength of 4.0 kN and tensile strength of 0.6 MPa (for 1.5 amount of cement). In conclusion, if we increase only 0.5 in the amount of cement, lightweight concrete has a flexion break traction by 3 times compared to 1 quantity of cement.
Concluding, if it is increased in only 0.5 the quantity of cement, the light concrete keeps a break of traction for flexing 3 times superior comparatively to 1 quantity of cement.
Regarding the absorption of water, it is classified in the NP EN 1609:1998; at the end of 24 hours it has an absorption coefficient of 0.7 kg/m2 and 168 hours after a value of 1.1 kg/m2 (for 1 amount of cement). As for the other situation (1.5 amount of cement) at the end of 24 hours it presents an absorption coefficient of 2.0 kg / m2 and after 168 hours a coefficient of 3.4 kg/m2. In both cases, the light concrete has excellent values of water absorption coefficient.
