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What is acid concrete?

2013-09-18 09:10:02


Made of acid gelling material and aggregate to resist acid infiltration and erosion of concrete called acid concrete. Is now commonly used sodium silicate concrete, it is composed of sodium silicate, sodium silicofluoride, acid powder, quartz powder or casting powder), acid aggregate (quartz sand or granite rock, etc.) according to certain proportion. To resist general organic acid, inorganic acid erosion.

Sodium silicate acid-resistant concrete. Sodium silicate acid-resistant concrete by sodium silicate cement, fluorine as hardening agent, cinnamic acid and acid powder and acid made from coarse and fine aggregate according to certain proportion. Acid powder by the diabase, acid resistant ceramic broken material, grinding fine quartzose material. Acid coarse and fine aggregate used quartzite, diabase, basalt, andesite, cast stone, etc. Sodium silicate acid mixture ratio of concrete for sodium silicate commonly: acid powder: acid fine bone material: acid-proof coarse aggregate ° = (0.6 ~ 0.7) : 1:1: (1.5 ~ 1.5). Sodium silicate acid-resistant concrete curing temperature is not less than 10 ° c, the curing time of not less than 6 d.

Sodium silicate acid-resistant concrete can resist erosion of various acids except hydrofluoric acid, especially for sulfuric acid, nitric acid have good corrosion resistance, and has high strength, its strength of 3 d is about 11 MPa, the 28 d strength of up to 15 MPa. More used in chemical industry of floor, C acid pickling tank, pool, etc.
The sulfur acid concrete. Sulfur acid concrete based on sulfur horizontal cementing materials' thiokol thickener for shop, mixed acid powder and fine aggregate, by heating (160 ° C to 170 ° C) made of sulfur horizontal sand boil the 'into acid crude after cooling is the sulfur acid in concrete. Its compressive strength can reach more than 40 MPa, commonly used in the ground, equipment foundation, acid storage pool tank, etc.