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Online since: August 2021
Authors: Zacharias G. Pandermarakis, Nikolaos D. Nikoloutsopoulos, Sofia P. Nikolopoulou
Strength of Polypropylene Fiber Reinforced Cement Mortar Composites with Variable Water/Cement Ratio N.D.
In this study, PP fiber reinforced mortars were prepared with specific composition but with variable water to cement (W/C) ratio and appropriate superplasticizer amounts.
For all compositions the cement to aggregates ratio was constant (1:3), whereas the water to cement ratio (w/c) was varied from 0.50 up to 0.70 parts per weight.
The water used was drinking water and came from municipal water network.
Monteiro, Concrete: Microstructure, Properties, and Materials, third ed., McGraw-Hill Professional, New York, 2005 [11] EN 13139, Aggregates for mortar, (2013) [12] ASTM C1437, Standard Test Method for Flow of Hydraulic Cement Mortar (2015) [13] EN 1015-7, Methods of test for mortar for masonry.
Online since: May 2024
Authors: Ismail Mansouri, Hassan Achiban, Ali Taous, Rachid Addou, Hamid Achiban
Pitlick, Variability of bed load measurement, Water resources research. 24 (1988), 173–177
Water resources research. 52 (2016b), 7760–7778
Colby, Scour and fill in sand bed Streams, United States Geological Survey Professional Paper 462-D. (1964), 39 p
Myrick, Channel and hillslope processes in a semiarid area, New Mexico, United States Geological Survey Professional Paper 352-G. (1966) 193-249
Hubbell, Transport and dispersion of labeled bed material: North Loup River, Nebraska, United States Geological Survey Professional Paper, 423-C. (1965), 55 p
Online since: September 2013
Authors: Yi Shun Zhang, Fei Yue Wang, Ling Zhang, Chang Liang Shi, Yuan Yang Liu
Using RNG K-ε two-equation turbulence model and Swirl Dominated Flow model respectively, and the top speed of different feeding liquid two-phase flow of water under medium CFD numerical simulation results grader internal flow field characteristics.
Effective separation of fine coal has been a hot research[4,5].The Cone Hindered Settling Hydro-sizer is based on hindered settling and fluidization, developed for fine coal classifying equipment[6,7].Based on Teeter Bed Separator, the Cone Hindered Settling Hydro-sizer take advantage of water flow characteristics to achieve the fine coal classification.
The bottom water of the classifier is given by the Constant pressure tank and central water from the pump to entry, which produce different size fractions of fine coal grading, hindered settling rate greater than the speed of particles into the bottom of the underflow, while the flow of the coal settling velocity less than the increase into the overflow. 2.2 The numerical simulation of the Cone Hindered Settling Hydro-sizer 2.2.1 Different traces under different feeding speeds Fig.2 The traces of particles at 5m/s feeding speed Fig.3 The traces of particles at 3m/s feeding speed From Fig.2 and Fig.3, the feed inlet velocity is small, the turbulent classifier less beneficial for classification process.
Acknowledgements This work was financially supported by the Mineral Processing Engineering, National Professional Characteristics(TS12245), and Henan Polytechnic University crosswise tasks(H12-468).
Online since: January 2016
Authors: Miroslav Bilanič, Pavel Vlček, Karel Kubečka
Project Segments of the project Segments project Source danger Compaction readiness Reaction to water, moisture Chemicals Load transfer in Chap. gap Labor intensive design Economic demands Expert no 1 Blinding x 2 2 1 2 2 Slag 3 4 4 3 3 2 Filling 4 3 3 3 4 - Unmade ground 1 2 2 1 1 1 Slag.
Project Segments of the project Segments project Source danger Compaction readiness Reaction to water, moisture Chemicals Load transfer in Chap. gap Labor intensive design Economic demands Expert no 4 Blinding 1 2 2 2 2 4 Slag 3 3 3 4 4 2 Filling 3 4 2 3 3 3 Unmade ground 3 2 2 3 2 3 The paper analyzed subsoil where slag was used as the substrate of the components.
Additional deformations of such subsoil can be also caused by transport and compaction going at the time of construction of the building after the compacted surface hardening slag consolidation subgrade embankment weight, the effect of water (rain, underground), other chemical and climatic influences.
Project Segments of the project Segments project Source danger Compaction readiness Reaction to water, moisture Chemicals Load transfer in Chap. gap Labor intensive design Economic demands Expert no 11 Blinding 3 2 3 2 2 4 Slag 2 2 2 3 1 1 Filling 2 4 2 3 2 3 Unmade ground 3 2 2 4 2 1 Blinding.
A group of experts (75%) was formed by experienced professionals who have been working in the construction industry for several years, and the issue of foundations is part of practice.
Online since: December 2010
Authors: Jing Shuang Zhang, Xing Teng Han, Qin Yong Ma
The results shown that strength loss rate of C30 concrete was 6.7% when the sand water content was 0.5% in the 28d and while strength loss rate was 12.0% when the sand water content was 1.0%.
Add water to dry-sand according to the sand content 0%, 0.5%, 1.0% and ensure the water equally distributed by sealing no less than 48h.
Make standard test cube and number them by sand water content and storage period.
Conclusions According to the cubic compressive test at different sand water contents, concrete can reach C30 strength although the sand water content was 0.5% and 1.0% in 28d storage.
China 2003(In Chinese)) [7] The Professional Standards Compilation Group of P.
Online since: January 2020
The topics that will be presented in this Volume will be going to the encounter of a variety of scientific and engineering disciplines, such as chemical, agricultural, mechanical engineering, etc…The book is divided in 9 chapters that intend to be a resume of the current state of knowledge for benefit of professional colleagues, scientists, students, practitioners, lecturers and other interested parties to network.
This is followed by Chapter 6, by Bezerra Pessoa et al. who present a study of the osmotic dehydration process of cassava cubes (Manihot esculentaCrantz.) in ternary solutions containing water, sucrose, and sodium chloride.
Online since: December 2014
Authors: Barbora Pjurova, Jarmila Drozdova, Dalibor Matýsek, Eliska Hrynysinova
EPA method 6200:2005 Field portable X-ray fluorescence spectrometry by X-ray fluorescence spectrometer Olympus Innov X, Model DELTA PROFESSIONAL.
Prior to the test, water holding capacity (WHC) in control and soil-biochar mixtures were assessed gravimetrically.
(Universitat Autònoma de Barcelona) for providing the material support, professional advice and assistance during the implementation of ecotoxicological assays.
Skrobankova: Ecotoxicity of sewage sludge from waste water treatment plant.
Ok: Biochar as a sorbent for contaminant management in soil and water: A review.
Online since: November 2013
Authors: Hua Rui Wu, Wen Xue Tan, Xi Ping Wang
Heretofore, performance of the well-known native Uncertainty Reason Resolution method still is unsatisfactory to professionals.
Studies on morphological and chromosome karyotype of 2 pelteobagrus species in the Yuanshui and Lishui rivers of Dongting lake water systems in Hunan province[J].
Online since: March 2012
Authors: Shu Su, Q.M. Shang, H. Chen
In accordance with related provisions of IMO maritime safety committee, at least two draught fans should be set up for one tanker, and its gross capacity should not be less than 125% of ships maximum discharge capacity. 5) Deck water seal Deck water seal and check valve are used to prevent backflow of hydrocarbon gas from oil hold to engine room.
When the deck water seal is filling with inert gas, it allows inert gas come into oil hold.
The operation procedures are listed as follows: Fig. 3 The developed IGS simulation system Step 1: Open valve Iv11, sea water Ips4, and valve10 and fill water into deck water seal in order to prevent inert gas flowing into it; Step 2: Open valve Iv14, sea water Ips1, valve Iv12 and Iv5 and fill cooling water into the combustion scrubber.
The water pressure is showed on gage Ig5 and it can be adjusted by changing the valve opening of Iv5; Open valve Iv26 and discharge the water; Step 3: Make sure valve Iv4, Iv3 and Iv2 is operated in manual mode but not auto mode and open valve Iv4 and Iv3; Step 4: Open Iv18 and Iv17, start draught fan Ib2 and Ib1 in order to inject air into the combustor.
[3]http://www.cedars-sinai.edu/Medical-Professionals/Resources-for-Physicians/Safety/OR-Fire-Safety/.
Online since: June 2014
Authors: Chu Yang Tang, Teng Fei Chang, Ying Dong Jia, Ge Wang, Mei Yu Gu
An experimental study on co-pyrolysis of biomass and coal was performed in a tubular furnace for comparison of product (tar, water, gas and char) yields and composition.
The water content of liquid product was determined according to GB/T 2288-2008.
Water yield increases dramatically, compared with tar yield.
The increase of water yield could verify the postulate.
[3] James Speight, Synthetic Fuels Handbook: Properties, Process, and Performance(McGraw Hill Professional, New Year2008)
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