Uncovering the role of superplasticizer in developing nano-engineered ultra-high-performance concrete
نویسندگان
چکیده
The effect of superplasticizer (SP) on the performance ultra-high-performance concrete (UHPC) and fiber-reinforced (UHPFRC) has been systematically investigated aiming to optimize use SP. slump flow, V-funnel time were employed evaluate impact SP workability, while compressive strength had used for mechanical property. Moreover, packing density, as well water film thickness calculated uncover mechanism. obtained results indicated that addition improved workability specimens with an ultimate-low water-to-binder (W/B) ratio, it benefited development UHPC a lower W/B ratio. This novel phenomenon (SP enhances properties UHPC) is due fact reduced enhanced structure, therefore resulting in increased strength. For UHPFRC, similar trends can be witnessed regarding flowability. However, alternation fresh behavior attributed inclusion SP, obvious fiber distribution, which altered UHPFRC. study revealed significant performance, especially development,
منابع مشابه
focus on communication in iranian high school language classes: a study of the role of teaching materials in changing the focus onto communication in language classes
چکیده ارتباط در کلاس به عوامل زیادی از جمله معلمان، دانش آموزان، برنامه های درسی و از همه مهم تر، مواد آموزشی وابسته است. در تدریس ارتباطی زبان که تاکید زیادی بر توانش ارتباطی دارد، کتاب درسی به عنوان عامل موثر بر پویایی کلاس محسوب میگردد که درس ها را از طریق فراهم آوردن متن ارتباط کلاسی و هم چنین نوع تمرین زبانی که دانش آموزان در طول فعالیت های کلاسی به آن مشغول اند، کنترل می کند. این حقیقت ک...
15 صفحه اولNano-engineered ultra high gain microchannel plates
Highly localized and very fast electron amplification of microchannel plates (MCP) enables a large number of high resolution and high sensitivity detection technologies, which provide spatial and/or temporal information for each detected photon/electron/ion/neutron. Although there has been significant progress in photocathode and readout technologies the MCPs themselves have not evolved much fr...
متن کاملthe role of application of dynamic assessment approach in improvement of iranian efl writing performance at different language proficiency levels
the present study sought to investigate the role of dynamic assessment (da) in improvement of iranian efl writing performance at different language proficiency levels. to this end, after conducting the quick placement test, 60 iranian efl learners were assigned to two groups with different language proficiency levels. in both groups each participant wrote two compositions, one before and one af...
the analysis of the role of the speech acts theory in translating and dubbing hollywood films
از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...
15 صفحه اولEffect of Reinforcement Type on the Tension Stiffening Model of Ultra-High Performance Concrete (UHPC)
Ultra-high performance concrete (UHPC) is a developing concrete and today is increasing to interest using it in structures due to its advantages such as high-compressive strength, modulus of elasticity, highly durability and low-permeability. Therefore, it is necessary to provide models for prediction of nonlinear behavior of this material. This study is aimed to investigate the tension-stiffen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2023
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2023.1177189