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Application of iron oxide pigments in building materials

Application of iron oxide pigments in building materials

The largest consumption of iron oxide pigments is the building and paint industry. The rise and fall of the two major industries and demand changes directly control the consumption situation in the region. In recent years, only for more than a year in the iron colored mortar 7000 tons. Except for floor coverings, Western Europe concrete roof tiles, precast concrete, concrete block, color brick, color slurry is also a large number of required iron oxide pigments. In North America, Canada, by the impact of European style, iron oxide consumption structure similar to the European, Canadian and Australian iron oxide pigments are mainly used in the construction industry in Western Europe 60% of the iron oxide for building materials. Such as in the United States annual consumption of 5 00000 tons of it is 3 million tons for the construction industry; British concrete paving materials with iron oxide with astonishing speed growth. Canada iron 65% products for concrete industry of the country for 10% color concrete mortar. In the twenty thousand tons of the amount of iron oxide pigments in Australia, the demand is fluctuating with the number of new buildings. In recent years, the United States affected by the European market, the amount of iron oxide pigments in the construction industry with the rapid development of the industry is also increasing, about the need to synthesize the amount of iron oxide 40 thousand ~ 50 thousand tons. The iron oxide in the building materials sector is mainly used for the concrete paving block (about 15% ~ 20%) a large number of iron oxide red, yellow, iron oxide brown and black color concrete products manufacturing. For housing construction, building materials, iron brown black colorant is the most popular in China. In short, foreign iron oxide consumption market, whether it is the existing market or potential market, mainly by the demand for colored construction materials control. In China, most of the iron oxide pigments are also used in building materials, the amount of about 60% of total sales. Mainly applicable to the following kinds of building structure and concrete products:
1. Color concrete products series: such as concrete encaustic tile, color concrete tile (brick pavement, permeable brick, grass planting brick, brick, etc.), color concrete block (split block, wall brick, culture stone, etc.).
2 color cement series
3 cast in place concrete series.
4. Color of dry mixed mortar series: such as pressure mode of floor and wear-resisting floors of colored reinforcing agent, color caulking agent, color spraying mortar, coloured self levelling cement.
5: artificial stone series such as artificial marble, artificial granite, artificial sand rock and terrazzo.
6. Color series: for concrete or architectural coatings water base colorant for oily paste epoxy or polyurethane floor coatings
7 other: color powder, sand mold.
Because of its good weather resistance, alkali resistance, light resistance (these performance than other inorganic pigment and organic pigments can both), so in the building materials are applied iron oxide pigment as colouring agent, in the concrete product amount is limited to less than 10%. (natural products can be used more than some) more than the high limit will make the mechanical strength of products decreased, and affect the solidification time. Generally in the 8% ~ 4 is appropriate, at the same time, iron oxide pigments in cobalt, zinc oxide, it will not affect the solidification time and solidification intensity.