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Wyszukujesz frazę "concrete curing" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Monitoring of concrete curing in extradosed bridge supported by numerical simulation
    Autorzy:
    Chróścielewski, J.
    Mariak, A.
    Sabik, A.
    Meronk, B.
    Wilde, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/103179.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    monitoring system
    simulations
    concrete maturity
    bridge
    Opis:
    The paper describes a mathematical model of concrete curing taking into account kinetics of setting reactions. The numerical model is implemented in the author’s program that was used to monitor thermal effects recorded in the concrete bottom plate of the extradosed bridge. Numerical approach was verified by experimental measurements and used for assessment of the current compressive strength due to degree of hydration of fresh concrete.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 32; 254-262
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Concrete Capillarity under Different Curing Conditions Produced in Kurdistan-Iraq
    Autorzy:
    Herki, Bengin A.
    Powiązania:
    https://bibliotekanauki.pl/articles/102221.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    capillary water absorption
    concrete
    strength
    UPV
    absorpcja wody kapilarnej
    beton
    siła
    Opis:
    This study discussed the effect of the curing condition on the capillary water absorption of concrete incorporating the locally available materials. The compressive strength and ultrasonic pulse velocity (UPV) as part of mechanical and durability properties of concrete were also investigated. The engineering properties were conducted on concrete under three different curing conditions at different curing ages of 2 days, 7 days and 28 days. The three different curing conditions were water curing, dry curing and gunny-covered curing. According to the results obtained, the concrete under water curing condition demonstrated a lower capillary water absorption (CWA) at 2 and 7 days ages and the concrete under gunny-covered condition demonstrated lower CWA at 28 days of age, compared with the other curing conditions. It is interesting to see that the compressive strength (38 MPa) of concrete was almost the same at 28 days age under the gunny-covered and water curing conditions.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 2; 131-139
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of Mechanical Properties of Lightweight Concrete with Pumice Aggregate
    Autorzy:
    Shafiq, Malik Salman
    Khan, Fasih Ahmed
    Badrashi, Yasir Irfan
    Khan, Fayaz Ahmed
    Fahim, Muhammad
    Abbas, Asim
    Adil, Waqas
    Powiązania:
    https://bibliotekanauki.pl/articles/2024034.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    lightweight concrete
    pumice lightweight aggregate
    saline water curing
    Opis:
    This paper presents the findings of a study carried out for evaluation of the mechanical behavior of lightweight concrete. Pumice, a rock resulting from cooling of lava, having entrapped air bubbles, has been used as a light- weight coarse aggregate. Evaluation of the mechanical behavior of the Pumice Lightweight Aggregate Concrete (PLWAC) has been carried out in comparison with the conventional concrete while comparing the mechanical properties of the two. Complete replacement of the coarse aggregate by volume had been carried out in the PLWAC. The testing regime consisted of conducting laboratory tests on concrete samples for evaluation of the mechanical properties including compressive strength, tensile stength, workability and dry density. It was concluded from the results that the use of lightweight aggregate resulted in a reduction in workability, as indicated by the slump test. Moreover, the dry density of PLWAC was also reduced by 30% as compared to the conventional concrete. A significant decrease (49%) in the compressive strength of PLWAC as compared to conventional concrete while a minor difference was observed in the tensile strenght of the two (2.9%). Based on the results of this study, it is recommended that PLWAC cannot be used in structures subjected to heavy loading conditions. However, PLWAC has a good potential to be used in low-cost structures with accompanying benefits of weight reduction.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 2; 30-38
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of curing temperature in the alkali-activated blast-furnace slag paste and their structural influence of porosity
    Autorzy:
    Medina-Serna, T. J.
    Arredondo-Rea, S. P.
    Gómez-Soberón, J. M.
    Rosas-Casarez, C. A.
    Corral-Higuera, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/103278.pdf
    Data publikacji:
    2016
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    activation of geopolymers
    alternative materials
    concrete friendly
    curing temperature
    maturation of hydration
    Opis:
    Due to the environmental problem posed by the use of Portland cement as construction material, it becomes necessary the search for supplementary cementitious materials that mitigate the ecological damage caused by it. Because the chemical similarity and the high cementitious powers of the blast furnace slag, it is used in the generation of geopolymers in a cement total replacement. This research focused on the study of the influence of the curing conditions on the final properties of blast furnace slag establishing three variables: no cured process (N-C), cured of controlled temperature of 45°C (CT45-C) and room temperature cure (RT-C); evaluating the mechanical behavior until 28 days of age and the water porosity index. The results show that geopolymers based on blast furnace slag has a behavior similar to hydration maturity of Portland cement and curing process decreases the porosity; On the other hand, applying a controlled temperature generates densest resistant pastes such as the variable CT45-C which reach the highest value of resistance in all curing ages.
    Źródło:
    Advances in Science and Technology. Research Journal; 2016, 10, 31; 74-79
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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