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 |
| Language: | Russian |
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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 |
| _version_ | 1797700846294663168 |
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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. |
| first_indexed | 2024-03-12T04:27:27Z |
| format | Article |
| id | doaj.art-0233a49690824d45a002c58292f92e21 |
| institution | Directory Open Access Journal |
| issn | 2073-6185 2542-095X |
| language | Russian |
| last_indexed | 2024-03-12T04:27:27Z |
| publishDate | 2017-03-01 |
| publisher | Dagestan State Technical University |
| record_format | Article |
| series | Вестник Дагестанского государственного технического университета: Технические науки |
| spelling | doaj.art-0233a49690824d45a002c58292f92e212023-09-03T10:15:25ZrusDagestan 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. Nesvetaev2Донской государственный технический университетДонской государственный технический университетДонской государственный технический университетObjectives. 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/343бетон для инъектирования с двухстадийным расширениемрецептурно-технологические факторыструктурообразование цементного камнякоэффициент эффективности газовыделениякоэффициент эффективности расширениякоэффициент стесненности расширениякоэффициент условий твердениякорректирующий коэффициентконцентрация заполнителяинтегральные показатели |
| 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 бетон для инъектирования с двухстадийным расширением рецептурно-технологические факторы структурообразование цементного камня коэффициент эффективности газовыделения коэффициент эффективности расширения коэффициент стесненности расширения коэффициент условий твердения корректирующий коэффициент концентрация заполнителя интегральные показатели |
| 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 | бетон для инъектирования с двухстадийным расширением рецептурно-технологические факторы структурообразование цементного камня коэффициент эффективности газовыделения коэффициент эффективности расширения коэффициент стесненности расширения коэффициент условий твердения корректирующий коэффициент концентрация заполнителя интегральные показатели |
| url | https://vestnik.dgtu.ru/jour/article/view/343 |
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