Aluminum oxide Alumina powder for Electric vacuum tube shell ceramic Al2O3 item value Classification ALUMINA CAS No. 1344-28-1 Other Names Alumina MF Al2O3 EINECS No. 215-691-6 Grade Standard Electron Grade, Industrial Grade, Reagent Grade Purity 99.5% Appearance White powder Application electronic ceramics Color White Grade Industrail Grade Density 3.5 g/cm3 Melting point 2054 Boiling Point 2980 Molecular Weight 101.96 Shape Ionische Water Solubility Hard Packing 25 Kg Pp Bag or plastic barrel Sample Availiable
We offer white cement and is available in 25 kg bag or jumbo bags.
PORTLAND CEMENT 32.5 - 42.5 N/R - 52.5 - CRS PACKING : BULK - 25/50 Kg - Big Bag / Pallet CERTIFICATIONS : ISO 14001-2015 AFAC AFNOR INTERNATIONAL AND CE ORIGIN : ALGERIA
We offer high quality white cement (52.5) for 50 kg bag or as per customer requirement. Our materials are good for construction projects and decorative works.
Description: Portland Cement 42.5N (EN 197-1 CEM I) is a top-grade cement, ideal for a range of general and heavy-duty construction projects requiring strong compressive strength and dependable quality. With a 28-day compressive strength of 48.3 MPa, this cement is perfect for residential buildings, roads, pavements, and other infrastructure applications. It meets international quality standards, providing durability and consistency to ensure long-lasting construction results. Chemical Composition: Silicon Dioxide (SiO2): 19.58% Aluminum Oxide (Al2O3): 5.41% Ferric Oxide (Fe2O3): 3.41% Calcium Oxide (CaO): 63.64% Magnesium Oxide (MgO): 0.91% (Max 5.0%) Sulfur Trioxide (SO3): 2.29% (Max 4.0%) Chloride (Cl): 0.048% (Max 0.10%) Insoluble Residue (I.R): 0.35% (Max 5.0%) Loss on Ignition (L.O.I): 4.65% Free Lime (F-CaO): 1.1% (Max 2.0%) Chromium Hexavalent (Cr VI): 1.5 ppm (Max 2.0 ppm) Physical Properties: Fineness (Blaine): 2984 cm�²/g Water Consistency: 27.2% Initial Setting Time: 150 minutes (Min 75 minutes) Final Setting Time: 189 minutes 2-Day Compressive Strength: 20.9 MPa 28-Day Compressive Strength: 48.3 MPa Soundness: 1.5 mm (Max 10 mm) Packaging Options: Available in bulk or custom packaging upon request to meet specific needs of large-scale cement producers.
Description: Portland Cement 52.5N (EN 197-1 CEM I) is a high-quality cement ideal for demanding construction projects requiring superior strength and durability. This cement grade is designed to offer a compressive strength of 52.5 MPa (minimum) after 28 days, making it perfect for high-rise buildings, roads, bridges, and industrial applications. It meets international standards and ensures excellent performance in both normal and challenging environments. Chemical Composition: Silicon Dioxide (SiO2): 19.41% Aluminum Oxide (Al2O3): 5.85% Ferric Oxide (Fe2O3): 3.54% Calcium Oxide (CaO): 64.53% Magnesium Oxide (MgO): 0.72% (Max 5.0%) Sulfur Trioxide (SO3): 2.75% (Max 4.0%) Chloride (Cl): 0.013% (Max 0.10%) Insoluble Residue (I.R): 0.21% (Max 5.0%) Loss on Ignition (L.O.I): 3.57% (Max 5.0%) Free Lime (F-CaO): 0.6% (Max 2%) Chromium Hexavalent (Cr VI): 1.2 ppm (Max 2.0 ppm) Phase Composition: Tri Calcium Silicate (C3S): 60.6% Di Calcium Silicate (C2S): 10% Tri Calcium Aluminates (C3A): 9.5% Tetra Calcium Aluminum Ferrite (C4AF): 10.8% Packaging Options: Available in bulk or custom packaging upon request to meet specific needs of large-scale cement producers.
Since ancient times, people have used hydrated lime to build houses and high buildings. Today, the massive architectural works and high-rise buildings are constructed more and more. Why appear firm architectural construction? That is cement â??important hydraulic binder in building process, helping to link projects together, forming a solid mass. With modern advanced machines and science, abundant human resources. Portland cement is the most common type of cement in general use around the world, used as a basic ingredient of concrete, mortar, stucco, and most non-specialty grout. It is a fine powder produced by heating materials in a kiln to form what is called clinker, grinding the clinker, and adding small amounts of other materials. Several types of Portland cement are available with the most common being called ordinary Portland cement (OPC) which is grey in color, but a white Portland cement is also available.
Microsilica (silica fume) is a by-product from silicon metal or ferrosilicon industries, is an amorphous silicon dioxide SiO2. This product reacts chemically with the calcium hydroxide in the cement paste which yields a calcium silicate hydrate gel that significantly enhances strength and durability. The super fine microsilica fills the voids between cement particles creating a very dense, less permeable concrete. White Cement advantages: Sustainability: Solar Reflectance Index (SRI): Floors finished with white or pastel color concrete will have a much higher SRI than floors with gray concrete, therefore they will reflect light better, and generate energy savings for the lifetime of the floors. Reduction of Heat Island effect: By constructing buildings with white concrete roofs or light-colored roof tiles, the Heat Island Effect is reduced from surfaces generating less heat and improved reflectivity. Architectural Concrete: White Portland Cement is ideal for decorative concrete and Architectural Concrete applications, Masonry and Cementitious Building Products. A key advantage of using white cement for these applications is that it provides a base color that can be tinted to custom colors to meet any color spectrum demand.
White Cement
