This marble first degree “Marvel” is a compact type of rock formed from limestone which takes its form after being subjected to high temperatures and pressures and achieve high degree of crystallization. After abrasive polishing with waxes or chemicals, the marble surface reaches a high natural luster which shows the real beauty of this stone even with different cutting angles.
Portland cement (often referred to as OPC, from Ordinary Portland Cement) is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. It usually originates from limestone. It is a fine powder produced by grinding Portland cement clinker (more than 90%), a limited amount of calcium sulfate (which controls the set time) and up to 5% minor constituents as allowed by various standards such as the European Standard EN197-1: Portland cement clinker is a hydraulic material which shall consist of at least two-thirds by mass of calcium silicates (3 CaO·SiO2 and2 CaO·SiO2), the remainder consisting of aluminum- and iron-containing clinker phases and other compounds. The ratio of CaO to SiO2 shall not be less than 2.0. The magnesium oxide content (MgO) shall not exceed 5.0% by mass.
The pine, Monterey pine or pine of California ( Pinus radiata ) is a species tree belonging to the family of Pinaceae, genus Pinus ,native to the southwestern United States , particularly California. Has the trunk straight with rhytidome thick reddish brown.In the Iberian Peninsula has been introduced mainly in the north and south, in order to exploit its timber.
