Technology for Preparing and Thermal Treatment of High Strength Concretes

Corobceanu, Vladimir; Giuşcă, Răzvan

doi:10.3923/jas.2006.1033.1039

Cited by 3 publications

(1 citation statement)

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“…At the same time, at the holding stage before setting, the cement dough is reversible and the passage of water through it will not affect violations of the stone structure. Taking into account the need for sealing water for complete hydration and the possibility of functioning of a weak structure [17,18], the duration of pre-exposure is taken within 2 hours.…”

Section: Proposal Of Heat Treatment Parameters For a Concrete Mixture...mentioning

confidence: 99%

Determination of rational parameters for heat treatment of concrete mixture based on a hollow aluminosilicate microsphere

Atyaksheva

Rozhkova

Sarsikeyev

et al. 2022

EEJET

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The research on determining rational parameters of heat treatment of a concrete mixture based on hollow aluminosilicate microspheres has defined the features of the intensifying action on the structural concrete mixture by low-pressure steam with optimum heat and mass transfer. Optimum values of temperature, humidity and speed of the medium have been identified. The obtained heat treatment parameters are subject to general regularities of structures for the formation of hydraulic bindings and are in accordance with production conditions, thus providing possibilities for their adaptation into production. The mechanisms for determining the strength of concrete stone according to the structural and thermal effectiveness of the active medium have been defined. Thanks to the strength-building mechanisms obtained, it is possible to reduce the thermal destruction capacity of the system while reducing the process heat consumption. It is confirmed that the main direction in reducing the destructive capacity is determined by the mass flow of moisture, which has the greatest heat capacity and the least thermal conductivity at the initial stages. The invention relates to periods of temperature rise and isothermal heating without impairing the mechanical properties of concrete. It is shown that the real duration excludes high-temperature destruction processes, thereby increasing the mechanical strength of concrete and reducing the overall energy consumption. Thus, there is a reason to argue that it is possible to produce strong and light concrete products under accelerated structure formation and new technologies for heat treatment of concrete based on lightweight fillers with reduced heat consumption.

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Section: Proposal Of Heat Treatment Parameters For a Concrete Mixture...mentioning

confidence: 99%

Determination of rational parameters for heat treatment of concrete mixture based on a hollow aluminosilicate microsphere

Atyaksheva

Rozhkova

Sarsikeyev

et al. 2022

EEJET

View full text Add to dashboard Cite

show abstract

Characterization of heat-treated self-compacting concrete containing mineral admixtures at early age and in the long term

Derabla

Benmalek

2014

Construction and Building Materials

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Use of a New Approach (Design of Experiments Method) to Study Different Procedures to Avoid Plastic Shrinkage Cracking of Concrete in Hot Climates

Bella

Asroun

Aguida

2011

ACT

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Hot climate concreting requires specific procedures in order to reduce the undesirable effects caused principally by excessive water evaporation from concrete surfaces, which induce plastic shrinkage cracking and thereby reduce durability. This research highlights the effectiveness of some of these measures: plastic sheets, curing agent, cold water and polypropylene fiber. The design of experiments method was used to reduce the number of tests and allow study of the effects of factors (or measures) and the interactions between these factors and the response parameters, which include plastic shrinkage cracks, evaporation rate, and strength. The most efficient way to minimize plastic shrinkage is to use a curing compound followed by the application of a plastic sheet cover; and the most efficient measure to decrease evaporation is the application of a plastic sheet cover.

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Technology for Preparing and Thermal Treatment of High Strength Concretes

Cited by 3 publications

References 0 publications

Determination of rational parameters for heat treatment of concrete mixture based on a hollow aluminosilicate microsphere

Determination of rational parameters for heat treatment of concrete mixture based on a hollow aluminosilicate microsphere

Characterization of heat-treated self-compacting concrete containing mineral admixtures at early age and in the long term

Use of a New Approach (Design of Experiments Method) to Study Different Procedures to Avoid Plastic Shrinkage Cracking of Concrete in Hot Climates

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