نتایج جستجو برای: water absorption (wa)

تعداد نتایج: 673248  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی عمران 1391

one of the most commonly used techniques to reduce the corrosion rate of rebar in concrete is addition substances named corrosion inhibitors into the concrete. corrosion inhibitor is chemical compounds that were added to concrete to prevent corrosion of steel in concrete. sodium nitrate is a type of anodic inhibitors that this study investigatesthe effect of this inhibitor on the properties of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

2014
Ritika Puri Balmeet Singh Gill Yogesh Khetra

Consumer preferences in east Asian part of the world pave the way for consumption of lotus stem starch (LSS) in preparations such as breakfast meals, fast foods, and traditional confectioneries. The present study envisaged the investigation and optimization of additives, that is, acacia gum, sodium chloride (NaCl), and sucrose, on water absorption (WA), water absorption index (WAI), and water s...

1993
R. O. GREEN

Remote wssing of tropospheric water vapor profiles from current geostaticmary writher satellites are made using a few broadband infrared (IR) channels in the 6-13-pn~ region. Uncerminties greater than 21N0 exist in derived water vapor values just above the surface from the IR emission measurements. [n this paper, we propose three near-[R channels. one within the O.94-jMr1 water vapor band absor...

Journal: :International Journal of Concrete Structures and Materials 2021

Abstract This paper presents the findings of an investigation into influence green-synthesized nano-TiO 2 on characteristics wood ash (WA) cement mortar. Mortar specimens were prepared by partial replacement with WA (10% weight) and addition 1, 3% weight binder; using constant water-to-binder ratio (w/b) for all mixtures. The properties evaluated are setting time binder flexural compressive str...

Journal: :Boletin De La Sociedad Espanola De Ceramica Y Vidrio 2022

Abstract This study presents the 51 mixtures of ceramic clays characterized by using XRF, XRD, granulometry, and dilatometry analyses. After firing in a 1000–1250 °C range, water absorption (WA) according to EN standards boiling water, under vacuum, 24 h soaking is determined. The results indicated that there was high statistically significant correlation between standard methods, but testing v...

2013
Khandkar- Siddikur Rahman Md Nazrul Islam Md Mushfiqur Rahman Md Obaidullah Hannan Rudi Dungani HPS Abdul Khalil

This study deals with the fabrication of composite matrix from saw dust (SD) and recycled polyethylene terephthalate (PET) at different ratio (w/w) by flat-pressed method. The wood plastic composites (WPCs) were made with a thickness of 6 mm after mixing the saw dust and PET in a rotary type blender followed by flat press process. Physical i.e., density, moisture content (MC), water absorption ...

2016
Pankaj Pandey Dilpreet Bajwa Chad Ulven Sreekala Bajwa

In this study, six combinations of flax, hemp, and glass fiber were investigated for a hybrid reinforcement system in a polyurethane (PU) composite. The natural fibers were combined with glass fibers in a PU composite in order to achieve a better mechanical reinforcement in the composite material. The effect of fiber hybridization in PU composites was evaluated through physical and mechanical p...

Journal: :Sustainability 2023

The treatment and valorization of wastes such as dredged harbor sediments oyster shells have become critical for environmental management. In order to promote waste resource sustainability, this study evaluated the feasibility using lightweight aggregate (LWA) production. effects shell content sintering temperature on sediment-based LWA properties, including particle density (PD), water absorpt...

Journal: :Journal of composites science 2021

The present study aimed at assessing mechanical and durability characteristics of ground granulated blast furnace slag (GGBS)-based geopolymer composites 5%, 10%, 15%, 20%, 25%, 30% replacement proportion silica fume 12 molarity NaOH. Mechanical properties were assessed using compression tension tests, whereas evaluated ultrasonic pulse velocity test (UPV), acid test, rapid chloride permeabilit...

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