Features of Technology of Gas Concrete Products and Proposals for Its Enhancement

An analysis of the traditional technology of gas-concrete products is presented, its distinctive features and shortcomings are noticed. Proposals for the elimination of noticed shortcomings are formulated: to add cold water to a gas-concrete mix, produce the products in the closed moulds and begin the thermal-humidity treatment of products without preliminary curing. Due to the full compression of concrete by rigid walls of the mould, it is possible to implement the accelerated temperature raise in the heating aggregate without fear of destructive destructions of concrete. Experiments conducted found that to obtain the concrete of improved strength, it is necessary to ensure the effect of pre-pressing of the gas-concrete mix (internal stress) in the closed mould. For this, it is recommended to form the products from gas-concrete mix with calculated density for a mark lesser (100 kg/m³) in the closed mould than in the open mould under the condition that equal quantities of concrete mix are filled in both moulds

A.A. PAK, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
R.N. SUKHORUKOVA, researcher

The I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials of the Russian Academy of Sciences Kola Science Center (26a, «Academic Town», Apatity, 184209, Murmansk region, Russian Federation)

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