| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to industry of construction materials and can be used in production of building products and constructions. Raw material mixture for preparation of corrosion-resistant alkali-ash concrete includes binding agent, consisting of liquid glass with silicate modulus n = 0.8-1.2 and density ? = 1.36-1.40 g/cmand produced from ferroalloy production waste - microsilica, containing 13 wt % of admixtures, characterised by true density ?= 2200-2430 kg/mand loss on ignition 1.5-3.1%, and field I fly ash, obtained in combustion of brown coal of KAFEC at Bratsk city TPP-7 and characterised by true density ?= 2120-2290 kg/mand 8-10.5% residue on sieve No. 8, and as filling agent - non-milled dump ash-and-slag mixture, which contains 9% of dump ash with particle size 0.14 mm and smaller and 91% of slag, with grain size, characterised by coarseness modulus M= 3.5 with ratio of fraction grains, %: fr. 5 mm 13.0, fr. 2.5 mm 21.5, fr. 1.25 mm 16.0, fr. 0.63 mm 27.5, fr. 0.315 mm 13.0, fr. 0.14 mm and smaller 9.0, with true density ?= 2520-2730 kg/m, loss on ignition 7.3-10.4% and breakability strength 15% with the following ratio of raw material mixture components, wt %: said I field ash 20.2-21.3, said liquid glass 14.8-19.2, said non-milled ash-and-slag mixture 60.6-63.9.EFFECT: increase of corrosion resistance.1 tbl |
