Study of dense cements, ceramics and related materials such as cement stones, is significant to create novel advanced components for various types buildings structures.These can possess high functional properties they be adopted purposes, instance corrosion resistive coatings constructions.In this paper, the investigability polymer concretes by neutron beam techniques (NBT) and, in particular, nano-scale characterization small angle scattering (SANS) concrete (PCC) samples made Portland or...

The peculiarities of the composition formation and hydraulic activity high calcium fly ash got by burning Kansk-Achinsk brown coals have been described. Fly ashes selected in dry state can be used as peculiar (specific) binding agents (minerals) on condition their preliminary handling reducing nonuniform volume change stone during hydration also expansion range application green building. cavitation technologies, organization granulation at heat power plants instead removal systems...

For gypsum-based cementing materials, environmental advantages are highlighted over Portland cement, and major method for increasing their water resistance described. By the example of gypsum-lime slag binders, a successful application water-resistant gypsums is demonstrated in severe climatic conditions Ural region. Phase composition analysis results presented stone-like material after years operation as part concrete walls enclosures. It found that durability can be explained by formation...

This paper is devoted to the study of hardening process and mechanical properties composite cements. There were three mineral additions two polymer ones, namely fly ash, limestone meal marble powder, dispersion redispersible powder used. The principal possibility combining fillers in design cements shown. It has been established that samples cement stone based on binders modified with have higher compressive flexural strength, regardless type filler.

The technology of power generation from nuclear is accompanied by the formation radioactive waste, which has significant potential environmental hazards.This paper proposes new methods decontamination NPP equipment with fluids that immediately after use can be converted into an environmentally safe condition -curing solutions.A characteristic feature curable solutions composition solution, and also processes in solution during deactivation, affect subsequent transfer this to a solid state,...

Abstract An analysis of dense cements, such as polymer cement concrete, is made to produce original innovative components for different types constructing materials. These materials present good functional properties (ageing resistance, crack formation hardness, and stability mechanical modules) can be used various applications. In this paper, experimental tests on Portland with added γ-Al 2 O 3 redispersible dry performed using small angle neutron scattering are reported. The objective the...

The possibility of obtaining a geopolymer binder on the basis fly ash Reft thermal power station and fine-grained concrete its is investigated. It shown that chemical-mineral composition properties this allow it to be used as an aluminosilicate component without additional grinding introduction mineral additives. In case, alkaline activator industrial sodium liquid glass diluted density 1200 kg/m3. dependences strength conditions hardening, aggregate consumption sequence mixing components...

The basic properties of sands from sifting crushed concrete scraps are studied in comparison with granite, which is traditionally used for floor screed production. It established that the replacement granite fine aggregate sand screening crushing scrap leads to a decrease quality indices solidified solutions by 10-30%. optimal grain particles size was elaborated improvement final material. composition dry building flooring sealing mix B12,5 strength class leveling developed on basis...


 The expediency of replacing natural quartz Sands, whose reserves are gradually exhausted, by rock screenings as part fine-grained concretes is shown. In particular, the characteristics granite and quartzite crushing in comparison with river sand presented, well results studying strength abrasion concrete obtained. To exclude effect grain composition on properties concrete, aggregate samples were pre-fractionated, conditions for producing (cement consumption, water-cement ratio, mix...

Федеральное государственное бюджетное образовательное учреждение высшего образования «Сибирский государственный автомобильно-дорожный университет (СибАДИ)» ТЕХНИКА И ТЕХНОЛОГИИ СТРОИТЕЛЬСТВАЖурнал учрежден ФГБОУ ВО «СибАДИ» в 2014 г.Зарегистрирован Федеральной службе по надзору сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор) Эл. № ФС77-70353 от 13 июля 2017 г.Периодичность 4 номера год.Предназначен для информирования научной общественности о новых научных...

High calcium fly ash (HCFA), formed in the process of burning brown coal and some types combustible shale is most ecologically dangerous among solid waste thermal power plants (TPP).The free oxide (СаО ) present HCFA complicates work ash-handling system increases risk allocation alkaline effluent from dumps.Disposal a dry selection production construction materials problematic as hardening stone often results extension.To reduce environmental risks TPP increase recycling preliminary its...

The problems of concrete recycling as a complex poly-reinforced composite characterized by unstable composition and properties are discussed. peculiarity scrap is that its return to the production cycle can be carried out in form different products: coarse aggregate (recycled aggregate), fine (sand from crushed concrete), well dust-like fraction. It shown aggregates made inferior natural analogues due presence cement-sand mortar their composition. Given growing threat depletion resources, it...

Abstract The composition and properties of crushing products brick scrap different sizes were studied. It is shown that a large (5–40 mm) small (0.16–5.0 fraction may be interest for replacing natural aggregates, while pulverized (0–0.16 has pozzolanic activity. presence cement masonry mortar in the walls buildings main obstacle to their use as aggregate light concrete: average density crushed grains this case was 890 kg/m 3 , – at least 1350 . With an increase degree these wastes, material...