INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION
Objectives. The formation of the structure of hardened concrete grouting with two-stage expansion is a complex process that is influenced by many factors, both of a prescriptive nature (composition and additive dosage, mineralogical composition of Portland cement clinker, concrete composition, the p...
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| Format: | Article |
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Dagestan State Technical University
2017-03-01
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| Series: | Вестник Дагестанского государственного технического университета: Технические науки |
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| Online Access: | https://vestnik.dgtu.ru/jour/article/view/343 |
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| author | T. N. Zhilnikova Yu. I. Koryanova G. V. Nesvetaev |
| author_facet | T. N. Zhilnikova Yu. I. Koryanova G. V. Nesvetaev |
| author_sort | T. N. Zhilnikova |
| collection | DOAJ |
| description | Objectives. The formation of the structure of hardened concrete grouting with two-stage expansion is a complex process that is influenced by many factors, both of a prescriptive nature (composition and additive dosage, mineralogical composition of Portland cement clinker, concrete composition, the presence of chemical additives) and in terms of process (the fineness of cement grinding, temperature of curing, etc.). Methods. In order to assess the impact of the above factors, the article proposes the introduction of a number of integrated indicators being characterised as a process in which influences are shown alongside the factor generating the influence. For the evaluation of the influence of different factors on the process of gas generation, an effectiveness ratio of gas generation is proposed by the authors. Results. The article presents the results of an investigation into the influence of the amount of gassing agent and the type and dosage of superplasticiser on the process of gassing by means of the displacement method on the mortar mix. The authors similarly propose a expansion efficiency coefficient. The article presents the results of the investigation into the influence of the amount of gassing agent, the presence and amount of superplasticiser, the sand/cement ratio, aggregate size and water-cement ratio during the first stage of expansion of the mixture. The authors propose a formula for describing the dependence of the relative expansion deformations on the concentration of filler. In order to assess the conditions in which a mixture is present, it is proposed to use an indicator consisting in the constraint expansion coefficient. Conclusion. Use of the hardening condition coefficient is proposed as a means of accounting for the effect of curing conditions on the strength of the concrete grouting with two-stage expansion. The authors recommend taking the introduction of correction factors into account when considering the impact of formulation and technological factors. |
| format | Article |
| id | doaj-art-0233a49690824d45a002c58292f92e21 |
| institution | DOAJ |
| issn | 2073-6185 2542-095X |
| language | Russian |
| publishDate | 2017-03-01 |
| publisher | Dagestan State Technical University |
| record_format | Article |
| series | Вестник Дагестанского государственного технического университета: Технические науки |
| spelling | doaj-art-0233a49690824d45a002c58292f92e212025-08-20T03:21:24ZrusDagestan State Technical UniversityВестник Дагестанского государственного технического университета: Технические науки2073-61852542-095X2017-03-0143415316610.21822/2073-6185-2016-43-4-153-166319INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSIONT. N. Zhilnikova0Yu. I. Koryanova1G. V. Nesvetaev2Don State Technical UniversityDon State Technical UniversityDon State Technical UniversityObjectives. The formation of the structure of hardened concrete grouting with two-stage expansion is a complex process that is influenced by many factors, both of a prescriptive nature (composition and additive dosage, mineralogical composition of Portland cement clinker, concrete composition, the presence of chemical additives) and in terms of process (the fineness of cement grinding, temperature of curing, etc.). Methods. In order to assess the impact of the above factors, the article proposes the introduction of a number of integrated indicators being characterised as a process in which influences are shown alongside the factor generating the influence. For the evaluation of the influence of different factors on the process of gas generation, an effectiveness ratio of gas generation is proposed by the authors. Results. The article presents the results of an investigation into the influence of the amount of gassing agent and the type and dosage of superplasticiser on the process of gassing by means of the displacement method on the mortar mix. The authors similarly propose a expansion efficiency coefficient. The article presents the results of the investigation into the influence of the amount of gassing agent, the presence and amount of superplasticiser, the sand/cement ratio, aggregate size and water-cement ratio during the first stage of expansion of the mixture. The authors propose a formula for describing the dependence of the relative expansion deformations on the concentration of filler. In order to assess the conditions in which a mixture is present, it is proposed to use an indicator consisting in the constraint expansion coefficient. Conclusion. Use of the hardening condition coefficient is proposed as a means of accounting for the effect of curing conditions on the strength of the concrete grouting with two-stage expansion. The authors recommend taking the introduction of correction factors into account when considering the impact of formulation and technological factors.https://vestnik.dgtu.ru/jour/article/view/343concrete grouting with two-stage expansion of formulation and technological factorsconcrete structuregassing efficiency coefficientexpansion efficiency coefficientexpansion constraint coefficientcuring condition coefficientcorrection coefficientconcentration of fillerintegrated indicators |
| spellingShingle | T. N. Zhilnikova Yu. I. Koryanova G. V. Nesvetaev INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION Вестник Дагестанского государственного технического университета: Технические науки concrete grouting with two-stage expansion of formulation and technological factors concrete structure gassing efficiency coefficient expansion efficiency coefficient expansion constraint coefficient curing condition coefficient correction coefficient concentration of filler integrated indicators |
| title | INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION |
| title_full | INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION |
| title_fullStr | INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION |
| title_full_unstemmed | INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION |
| title_short | INTEGRAL INDICATORS OF THE INFLUENCE OF FORMULATECHNOLOGICAL FACTORS ON THE CEMENT MATRIX OF CONCRETE STRUCTURE FORMATION FOR INJECTION WITH TWO-STEP EXPANSION |
| title_sort | integral indicators of the influence of formulatechnological factors on the cement matrix of concrete structure formation for injection with two step expansion |
| topic | concrete grouting with two-stage expansion of formulation and technological factors concrete structure gassing efficiency coefficient expansion efficiency coefficient expansion constraint coefficient curing condition coefficient correction coefficient concentration of filler integrated indicators |
| url | https://vestnik.dgtu.ru/jour/article/view/343 |
| work_keys_str_mv | AT tnzhilnikova integralindicatorsoftheinfluenceofformulatechnologicalfactorsonthecementmatrixofconcretestructureformationforinjectionwithtwostepexpansion AT yuikoryanova integralindicatorsoftheinfluenceofformulatechnologicalfactorsonthecementmatrixofconcretestructureformationforinjectionwithtwostepexpansion AT gvnesvetaev integralindicatorsoftheinfluenceofformulatechnologicalfactorsonthecementmatrixofconcretestructureformationforinjectionwithtwostepexpansion |