Zachowania kotew chemicznych montowanych w różnych rodzajach betonu

• Autorzy: Çalişkan Özlem , Karakurt Cenk , Aras Murat , Kaya Turgut

Identyfikatory

DOI

10.32047/CWB.2022.27.5.3

Warianty tytułu

EN

Behavior of chemical anchors installed in different kinds of concrete

• Języki publikacji: PL EN

Abstrakty

PL

Kotwy chemiczne znajdują szerokie zastosowanie w dodatkowych instalacjach żelbetu budowlanego, pracach naprawczych i zbrojeniowych. Dzięki coraz większej różnorodności materiałów i poprawie wiadomości na temat produktów odpadowych, możliwe stało się produkowanie różnych rodzajów betonu, o różnych właściwościach. W tym badaniu pręty żebrowane klasy B420C o średnicy 16 mm, zostały osadzone w czterech różnych rodzajach betonu, przy użyciu czterech różnych klejów chemicznych, a następnie zastosowano siłę rozciągającą. Wyznaczono sztywność, współczynnik plastyczności, zdolność do pochłaniania energii i siły rozciągającej oraz oceniono stopień zniszczenia na podstawie krzywych obciążenie-przemieszczenie, uzyskanych w wyniku doświadczeń. Stwierdzono, że siła rozciągająca i zdolność do pochłaniania energii wzrosła w wyniku osadzenia kotew i przyłożenia do betonu siły rozciągającej, uzyskanej przez dodanie materiałów domieszkowych do betonu referencyjnego. W części analitycznej wykorzystano sformułowanie podane w ACI 318, zidentyfikowano nośność i wytrzymałość obliczeniową oraz określono ich poziomy bezpieczeństwa, w porównaniu z wynikami badań.

EN

Chemical anchors are widely used in additional installations of construction irons, repair and reinforcement work. Due to the increasing diversity of materials and the improved awareness of waste products, it has become possible to produce different kinds of concrete, with various properties. In this study, class B420C ribbed bars with 16 mm diameter, were installed in four different concretes by using four different chemical adhesives, and a tensile force was applied. The stiffness, displacement ductility ratio, energy-dissipation capability and tensile force values were determined and the failure modes were interpreted from the load-displacement curves, obtained as a result of the experiments. It was found that the tensile force and energy-dissipation capacity, had increased as a result of installing anchor and applying a tensile force to the concrete, that was obtained by adding admixture materials, to the reference concrete. In the analytical part of the study, the formulation provided in ACI 318 was used, capacity and design strengths were identified, and their safety levels were determined in comparison with the test results.

Słowa kluczowe

PL

kotew chemiczna; cement; żużel wielkopiecowy; popiół lotny; włókno polipropylenowe; beton; ACI 318

EN

chemical anchor; blast furnace slag; cement; fly ash; polypropylene fibre; concrete; ACI 318

• Wydawca: Fundacja Cement, Wapno, Beton
• Czasopismo: Cement Wapno Beton
• Rocznik: 2022
• Tom: R. 27, nr 5
• Strony: 330--345
• Opis fizyczny: Bibliogr. 44 poz., il., tab.

Twórcy

autor

Çalişkan Özlem

• Dept. of Civil Engineering, Bilecik Şeyh Edebali University, Bilecik, Turkey

autor

Karakurt Cenk

• Dept. of Civil Engineering, Bilecik Şeyh Edebali University, Bilecik, Turkey

autor

Aras Murat

• Dept. of Civil Engineering, Bilecik Şeyh Edebali University, Bilecik, Turkey

autor

Kaya Turgut

• Batman University, Batman, Turkey

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