CONCRETE

[:ru]Прохоров А. Н.[:en]Prokhorov A. N.[:] [:ru]кандидат технических наук ООО «Форсаж»[:en]Cand. Sc. (CJSC «Forcage»)[:]

[:ru]Орлов А. В.[:en]Orlov A. V.[:] [:ru]ООО «Форсаж»[:en]CJSC «Forcage»[:]

[:ru]Князев Д. Л.[:en]Knyazev D. L.[:] [:ru]ООО «Акрил»[:en]CJSC «Acryl»[:]

Alitinform №5 (06) 2008 г. 57-65 p.

Abstract

At present time a steady trend is reported towards increased production quality of investment and construction sector enterprises. This is caused by the rise of market prices on civil and industrial facilities construction as well as by the increased level of competition among construction companies. These tendencies also affect construction materials manufac-turers, in particular those plants which produce mixed and construction concrete. In order to increase their product marketability a number of companies (Iron-Concrete Constructions Plant, Mozhaisk city, Moscow Region; OJSC ZhBK-1, Ochakovsky plant, Moscow) have im-plemented International Quality Standards ISO 9000, ISO 14000 that set additional requirements to quality and composition of inert materials, binding materials, chemical additives to cement and concrete, and release agents.

Another upcoming trend for increasing companies’ marketability is lowering expenses connected with construction materials’ production. In particular for structural and reinforced concrete manufacturers, when increasing quality of exposed surfaces of molded reinforced concrete products and structures takes place, there is decrease in expenses required for addi-tional surface puttying.

Cavities, fractures and cuts formed on the product surface result in extra expenses necessary to bring a product into marketable state in order to pass factory tests. These expenses in some companies may amount up to 1% of products prime cost so in the end they exceed a company’s expenses on chemical additives to concrete and release agents which in the case of effective work with cement (binding material) can significantly reduce amount of pores and cavities in the surface layer.