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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Forestry Engineering Journal</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Forestry Engineering Journal</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Лесотехнический журнал</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2222-7962</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">84012</article-id>
   <article-id pub-id-type="doi">10.34220/issn.2222-7962/2024.1/7</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Технологии. Машины и оборудование</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>TECHNOLOGIES. MACHINERY AND EQUIPMENT</subject>
    </subj-group>
    <subj-group>
     <subject>Технологии. Машины и оборудование</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Structural strength characteristics of fiber cement soil in road pavement of timber roads in the Sverdlovsk region</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Структурные прочностные характеристики фиброцементогрунта в дорожной одежде лесовозных автомобильных дорог Свердловской области</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Чудинов</surname>
       <given-names>Сергей Александрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Chudinov</surname>
       <given-names>Sergey Aleksandrovich</given-names>
      </name>
     </name-alternatives>
     <email>chudinovsa@m.usfeu.ru</email>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Уральский государственный лесотехнический университет</institution>
    </aff>
    <aff>
     <institution xml:lang="en">Ural State Forest Engineering University</institution>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2024-06-20T12:26:10+03:00">
    <day>20</day>
    <month>06</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-06-20T12:26:10+03:00">
    <day>20</day>
    <month>06</month>
    <year>2024</year>
   </pub-date>
   <volume>14</volume>
   <issue>1</issue>
   <fpage>116</fpage>
   <lpage>133</lpage>
   <history>
    <date date-type="received" iso-8601-date="2023-12-27T00:00:00+03:00">
     <day>27</day>
     <month>12</month>
     <year>2023</year>
    </date>
    <date date-type="accepted" iso-8601-date="2024-02-12T00:00:00+03:00">
     <day>12</day>
     <month>02</month>
     <year>2024</year>
    </date>
   </history>
   <self-uri xlink:href="http://lestehjournal.ru/en/journal/2024/no-1-53/structural-strength-characteristics-fiber-cement-soil-road-pavement-timber">http://lestehjournal.ru/en/journal/2024/no-1-53/structural-strength-characteristics-fiber-cement-soil-road-pavement-timber</self-uri>
   <abstract xml:lang="ru">
    <p>Решением задачи повышения эффективности технологии укрепления грунтов конструкций лесовозных автомобильных дорог может быть дисперсное армирование цементогрунтовой матрицы волокнами фибры. Получаемый при этом композиционный материал – фиброцементогрунт в условиях лесной зоны обладает повышенными прочностными показателями и трещиностойкостью. В целях исследования структурных прочностных характеристик фиброцементогрунта: угла внутреннего трения и удельного коэффициента сцепления, проведены лабораторные исследования на установке одноплоскостного среза ГТ 0.2.1. Образцы фиброцементогрунта изготовлены на основе природного грунта из земляного полотна лесовозной автомобильной дороги в Свердловской области с содержанием 2 %, 4 %, 6 % портландцемента и 0 %, 0,75 %, 1.5 % фиброволокна на основе отходов производства базальтовых теплоизоляционных плит. Определены структурные прочностные характеристики и установлено, что добавка базальтового фиброволокна в составе фиброцементогрунта влияет при уровне значимости p = 0,000026 на угол внутреннего трения и при p = 0,000016 на удельный коэффициент сцепления в зависимости от содержания портландцемента. При содержании 2 % портландцемента, добавка 1.5 % базальтового фиброволокна снижает удельный коэффициент сцепления на 8 % (10 кПа) и угол внутреннего трения на 1°, в силу недостаточного развития цементогрунтовой матрицы фиброцементогрунта. При содержании 6 % портландцемента, добавка 1.5 % базальтового фиброволокна увеличивает коэффициент сцепления на 43 % (258,7 кПа) и угол внутреннего трения на 2°, в связи с удержанием в цементогрунтовой матрице и восприятием внешних нагрузок фиброволокном за счет осевого растяжения. Полученные показатели удельного сцепления и угла внутреннего трения целесообразно использовать для моделирования и расчета конструкций дорожных одежд лесовозных автомобильных дорог из фиброцементогрунта методом конечных элементов с учетом нагрузок от лесотранспорта и сложных природных условий лесной зоны.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The solution to the problem of increasing the efficiency of the technology for strengthening soils of logging highway structures can be dispersed reinforcement of the cement-soil matrix with fiber. The resulting composite material, fiber cement soil, in the forest zone has increased strength properties and crack resistance. In order to study the structural strength characteristics of fiber cement soil: the angle of internal friction and the specific coefficient of adhesion, laboratory studies were carried out using a single-plane cutting unit GT 0.2.1. Samples of fiber cement soil were made on the basis of natural soil from the subgrade of a logging road in the Sverdlovsk region containing 2 %, 4 %, 6 % Portland cement and 0 %, 0.75 %, 1.5 % fiber based on waste from the production of basalt thermal insulation boards. Structural strength characteristics were determined and it was found that the addition of basalt fiber in the composition of fiber cement soil affects the angle of internal friction at a significance level of p = 0.000026 and at p = 0.000016 the specific coefficient of adhesion depending on the content of Portland cement. With a content of 2 % Portland cement, the addition of 1.5 % basalt fiber reduces the specific coefficient of adhesion by 8 % (10 kPa) and the angle of internal friction by 1°, due to the insufficient development of the cement-soil matrix of the fiber-cement soil. With a content of 6% Portland cement, the addition of 1.5 % basalt fiber increases the adhesion coefficient by 43 % (258.7 kPa) and the angle of internal friction by 2°, due to retention in the cement-soil matrix and the perception of external loads by the fiber due to axial tension. It is advisable to use the obtained indicators of specific adhesion and angle of internal friction for modeling and calculating road pavement structures for logging roads made of fiber cement soil using the finite element method, taking into account loads from timber transport and difficult natural conditions of the forest zone.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>лесовозная автомобильная дорога</kwd>
    <kwd>фиброцементогрунт</kwd>
    <kwd>укрепление грунта</kwd>
    <kwd>дорожная одежда</kwd>
    <kwd>угол внутреннего трения</kwd>
    <kwd>удельный коэффициент сцепления</kwd>
    <kwd>дисперсное армирование</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>logging road</kwd>
    <kwd>fiber cement soil</kwd>
    <kwd>soil strengthening</kwd>
    <kwd>road pavement</kwd>
    <kwd>angle of internal friction</kwd>
    <kwd>specific coefficient of adhesion</kwd>
    <kwd>dispersed reinforcement</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
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