The article is devoted to improving the quality of non-autoclave aerated concrete. The theoretical aspects is considered, the prescription-processing methods is proposed, results of experimental studies is given. The role of the sequence of introduction of the components and mode of preparation of concrete mixture is studied. The effect of hardeners on the properties of aerated concrete is revealed. It analyzes ways of waste disposal and their appropriate application.
Keywords: Concrete, structure, technology, recipe, recovery, sodium sulfate, partially hydrated cement system, an aluminum suspension, a hardening accelerator, coefficient of structural quality
Analysis of the effectiveness of the electrophysical activation of foam concrete mixtures was completed. The raw materials and experimental technique are described. Results of estimation of the effectiveness and impact of alternating electric field on the foam concrete mixes was presented. As object of research was made the impact of factors such as the grading of the aggregate and the tension created by the electric field on the physico-mechanical properties of foam concrete made of electroactivated mixtures. Conclusions are made on the basis of the obtained experimental dependencies.
Keywords: Variable electric field, foam-concrete mix, activation, grain size of sand, coefficient of structural quality, gelation, interpore partition
The optimization of the factors affecting the efficiency of Electro-activation of foam concrete mixes is carried out. For this purpose was applied mathematical planning experiment. As varied factors adopted grain size of sand grains, the value of the applied voltage and the duration of treatment. The mathematical models for strength, high density and structural quality are obtained.
Keywords: Variable electric field, foam-concrete mix, coefficient of structural quality,
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