Search results

The results will be very useful to the concrete professional dealing with chloride-ion penetration.
In this test, the water binder ratio is equal to 0.45.
Table 1 Concrete mix proportions Concrete Cement [kg/m3] Sand [kg/m3] Crushed stone [kg/m3] Water [kg/m3] Steel fiber [kg/m3] Water reducer [%] PC 367 765 1146 165 0 0.6 SFC-0.5 367 735 1102 165 39 0.6 SFC-1 367 733 1100 165 78 0.6 SFC-1.5 367 718 1066 165 117 0.6 SFC-2 367 702 1053 165 156 0.6 Test Method.

The experimental work was carried out by dispersing MCC in water with the help of a non-ionic surfactant (Pluronic F-127) using ultrasonication energy.
The developed cementitious composites were cured inside water for two different hydration periods, 28 and 56 days.
Natural fibers are a good alternative to synthetic and metallic fibre based reinforcements for engineers, researchers and professionals all over the world because of their superior properties such as high specific strength, low weight, low cost, fairly good mechanical properties, eco-friendly and bio-degradable characteristics as well as local availability of these fibers [4].
Ordinary Portland Cement (CEM I 42.5 R) from Secil-Portugal, standard sand and distilled water were used in a proportion of 0.5:1:3 (water: cement: sand).
For the preparation of each composite; 450 grams of cement, 1350 grams of sand and 225 ml of distilled water were used.

Introduction In water conservancy and hydropower projects, rock mechanical parameters are important data.
References [1] The Professional Standards Compile Croup of People's Republic of China.
Beijing: water Conservancy Publishing Company, 1982
[2] The Professional Standards Compile Croup of People's Republic of China.
Beijing: Water Resource and Electric Power Press, 1993

Study on settlement process of dredger under current force XU Ting1,2 , XIAO Zhong2 ，SUN Liancheng1 1 Tianjin Research Institute for Water Transport Engineering, M.O.T, Tianjin 300456, China 2 Tianjin University, Tianjin, China.
The result from the calculation and analysis of the tidal current in the wreck-zone shows that velocities and directions between ebb-tide and flood tide in the water zone occurs some changes.
The elastic modulus of each soil layer takes 10 times of the compression modulus of the soil layer in the calaulation. 4 Numerical simulations and results 4.1 Current force The current force on the dredger is calculated according to the professional standard of P R China—Load Code for Harbor Engineering (JTJ215-98).
is the density of water, and it is 1.0 for freshwater and 1.025 for seawater.
The current resistance coefficient is CW＝2.32×0.7＝1.624 (2) According to the relevant tidal current data, the design velocity of current can be taken as 1.5 m/s and the corresponding current force FW is (3) In which, LB is the length of hull bottom surface; LSurf is the length of hull at water surface; h is water depth.

In addition, in recent years, some technologies like the acoustic CT technology, high-density resistivity method and TDR (time domain reflectometry) have been constantly introduced into the field of cultural relics protection and quickly recognized by the professionals in the industry for wide applications.
In the disease mechanism research of the earthen architecture sites, the current researches focus on the soil-water interaction, water and salt transport, thermodynamic properties, and wind erosion mechanism.
In particular, the research results about the desiccation and cracking on the surface of ancient earthen architectures, the physical and mechanical property changes of the soil from the earthen architecture sites, water and salt transport mechanism in soil from the earthen architecture sites, and the wind-erosion durability have been recognized in the professional field.
However, the earthen architecture sites are actually in the wild environment where wind, water, heat, salt and many other factors are involved.
Therefore, it is the main direction in the future to make the coupling research of water, salt, heat and force in the research of the weathering disease mechanism.

The initial preparatory stage of this process without appropriate professional relationship to it may have a mixed effect to the quality of further work, the analysis of the dynamics of deformation characteristics and the forecasting of their development stages.Therefore, it is the responsibility of surveyors, designers, and teachers to inform all construction organizations the need to compile geodetic works for the unique facilities constructions with mandatory indication of the types and methods of their inspection at the stage of assembly, installation and operation for complete analysis and prediction of deformation processes.
In connection with the increased number of accidents at similar facilities (the water park in Moscow in 2004, the shopping center "Michurinsky" in Moscow in 2011, etc.) it is necessary not only to monitor the technical condition of such structures more carefully, but also study each stage more thoroughly erection and geodetic support of the structuresconstruction.

American architect, Malcolm Wells has actively promoted and studied the energy-saving earth-sheltered architecture in the book, gentle architecture, and the practice of the earth-sheltered architecture that made by an Egypt architect Hassan Fathy, has received widespread praise by the international architectural professionals, besides, ethnic Chinese architect, Cui Yuejun and Gi Grenier, a professor of the University of Pennsylvania in the United States etc., are all committed to the exploration of earth-sheltered architecture[1].
In summer, the absorber board at the bottom of the solar energy chimney absorbs solar energy, which makes the air temperature in the chimney rise, and the hot air rises that forms the zone of negative pressure, and the top hot air comes into the chimney through the outlet (D), at the same time, fresh air after being cooled by water well and soil layer goes into indoors by the indoor ground fresh air inlet (F), which reaches a cooling effect.
And the hot air rises that forms the zone of negative pressure, then the cold air at the bottom of the room can go into chimney through the outlet at the bottom of hearth(G), then fresh air goes into the room from new outlet（E）in the sun space through the first preheating between the water well and soil layer, at last it will enter the room by the outlet in the upper gable（C）through preheating in the sun space.

New System Concept Genetic algorithm, self-discipline decentralized system and the organizational, complex system science, etc 2 Practice Teaching Practice/Training Students social survey and research paper, writting guidance and comment 4 Case Study Discussion applied systems engineering principles, analyze the social hot issue, such as “system thinking of Dujiangyan water project”, “system analysis of the house decoration process”, and “research on the students’ comprehensive quality assessment in Shenyang University”, etc. 6 Total 48 C.
The case teaching contents Such as “system thinking of Dujiangyan water project”, “system analysis of the house decoration process”, and “research on the students’ comprehensive quality assessment in Shenyang University” have strengthened practical teaching level directed the research of the real problems. 3) Thesis Writing.
Pay attention to the combination of “a little” and “many”, the combination of “learn” and “use”, and the combination of “traditional” and “fashion”, then we cultivate IE professionals with high-quality which meet the market requirements.

Quantitative Assessment of the Disturbance Factor in Hoek–Brown formulas Guanjun Luo1,a, Wenxi Fu1,b 1State Key Laboratory of Hydraulic and Mountain River Engineering, School of Water Resource and Hydropower, Sichuan University, Chengdu 610065, P.
However, the value of D has a significant difference due to the subjectivity of professional technicians.
Edelbro (2004) [8] statistically analyzed the data of D, which were estimated by eleven professional technicians for the same grade rock mass of Swedish Laisvall mine, and his research results indicate that the value of D ranges from 0 to 0.7, and the corresponding mean, standard deviation and coefficient of variation are 0.28, 0.24 and 0.89 respectively.
The water-retaining structure is a gravity dam which is 84m high.

Backwardness of protection and reparation methods Comparing with heritage buildings or historic district buildings, the reparation of ordinary old houses is inevitably rough- buildings are often converted to a mess, and this is because individual spontaneous practices of maintenance are usually without the guidance of the professional departments.
Although the collective restoration for tourism takes some relevant professional guidance, the actual operation is tend to be simplified, such as superficial repainting or redecoration of inner spaces, which result into lost in original historical styles and folklore information.
The design is from the consideration for convenience of domestic water use and fire protection.
Households side by side along the water constitute a relatively complete community.