The article presents the results of study stability reinforced ash-storage embankment (ASE) a functioning metallurgical plant. purpose tests was to determine numerical modelling correction factors based on model test results. were performed at scale 1:30 full-scale embankment. simulation testing in two tasks. first task considered reduced (relative ASE) real sheet, using characteristics an equivalent material. second ash-and-slag mixtures situ with but under conditions tests. quantitative...

This paper describes the technology of non-autoclaved foam concrete production using a complex mixture based on regional waste. The deals in detail with process development composition, including selection components and optimization their ratio. Special attention is paid to study influence physical mechanical properties finished product, such as strength, density thermal insulation characteristics. methods laboratory tests that are carried out evaluate quality efficiency new material...

The object of the study is chemical resistance concrete modified with granite dust and acrylic latex. materials used in were samples a variable composition additive components, which subsequently exposed to an aggressive environment. problem, research aimed at solving, tendency structures fail under prolonged exposure acidic conditions, significantly reduces their service life. This aims address this issue by incorporating modifying additives that improve concrete’s attack. experimental...

The article presents a method of production foam concrete, which involves two-stage injection foam. proposed improving the pore structure due to more uniform distribution pores throughout volume material. Laboratory tests were carried out for two types samples, represented by concrete with use modified additive in comparison classical concrete. density Type 1 samples varies from 410 793 kg/m3 (coefficient variation 5.12 7.31%), while fiberboard lies within range 539 655 2.66 3.14%). results...

The paper proposes an impregnation composition for cement concrete roads used as ice-phobic coating. has been made based on keratin-containing components derived from animal waste with the addition of water-soluble polymers. main parameter serviceability coating impregnated developed was assessing adhesion resistance ice crust to under influence mechanical loads. For this purpose, tests big specimens (surface area 1925 cm2) in laboratory conditions application vibration and impact loads...

This paper includes the short summary about dynamic and static tests by driven piles (cross-section 30×30 cm length of 12 m). The definitions methodologies pile bearing capacity aforementioned methods were also given. As an example for those methods, describes results dynamic, new in Astana PDA (Pile Dynamic Analyzer) soils performed construction site “New Railway Station” (Fig. 1). possible depth penetration determined according to tests, as well recommendations device working project issued.

Vibration can cause damage to the building structure, reducing its operational reliability: stability, impairing load-bearing capacity of slabs and also causing cracks. To prevent above causes, vibration loads acting both on structure as a whole parts should be monitored. This paper discusses results measurement caused by pile driving in soil an adjacent housing complex. The aim study was determine minimum permissible distance from pile-driving site at which neighbouring buildings would...

This article presents the results of an investigation proposed method and influence a modified additive on foam concrete properties. X-ray diffraction analysis showed that has variable mineralogical composition, joint use components contributes to synergistic effect, improving processes cement hydration. Microscopy samples presence microcracks micropores in both with without additive. However, significantly reduced their number size, which indicates improvement structure material. The...

The article presents the results of experimental studies properties quarry sand to assess their suitability for use in production foam concrete. sites extraction territory Akmola region are analyzed and physical mechanical characteristics characterized. Evaluation was made four types sand. main evaluation parameters were: particle size distribution, homogeneity, shrinkage, density moisture content sands. study showed that sands vary depending on type, which indicates differences natural...

Hereafter are the results of underground testing by piles with method vertical static O-cell (Osterberg method) presented, which had been made on Expo 2017 projects, buildings Pavilion in Astana, Kazakhstan, 2013. Experienced bored a length 31.5 m, diameter 1000 mm. Bi-directional load tests carried out accordance ASTMD1143.The proposed George Osterberg, allows to simultaneously determining estimated soil resistance under lower end and its lateral surface. Feature test is that applied not...

To assess the condition of structures buildings and structures, a comprehensive analysis factors affecting their performance characteristics - concrete strength, protective layer, rebar diameter, thermal conductivity moisture content concrete, adhesion facing coatings, frost resistance water is required. However, with all variety monitored parameters control strength has special place because when assessing structure determining factor compliance actual to design requirements. This paper...

The article presents the third stage of study results a complex modified additive (CMA), in accuracy influence variable ingredients CMA on strength cement. This shows methodology making samples, selection composition at different percentages components, and analysis behavior obtained results. To evaluate changes strength, samples were made tested compression bending 7, 14, 28 days normal-moist hardening. experiment showed that addition plasticizers (PAB) reduces quantity water - 35%, by...

The article presents the results of a study on foam concentration for production concrete using two-stage introduction method. research was conducted by evaluating strength and density samples manufactured both proposed conventional methods. optimal composition determined through several iterations, considering adjustments to overall quantity foaming agent water-cement ratio. revealed that method enhances properties promoting formation more uniform porous structure within material. initial...

The results of series field test on piles strategic oil and gas site in Kazakhstan are presented this paper. include: static load accordance with ASTM standards (GOST), dynamic GOST pile driving analyzer (PDA) ASTM. difference procedures is presented.

The article presents results of the effect one component modified additive (post alcohol bard) on change in setting time cement mixture. work shows a method for determining time, selection optimal composition samples, which will accelerate (beginning and end). Performed comparative study cements from different manufacturers, as well (post-alcohol time. research allows to determine plasticizing properties foam concrete during their production. It is established that introduction can reduce...

The article presents studies of the effect a complex modified additive on setting time cement paste. work describes method determining paste standard consistency, selection optimal composition at different percentages its components, allowing accelerating time. In this work, authors used including alkali (caustic soda NaOH), post-alcohol bard (alcohol production waste), and hardening accelerator (gypsum) in percentages. Performed comparative study additives changes analysis suggests that...