scholarly journals Development of Dry Drilling Diamond Bit and Drilling System

2021 ◽  
Vol 2141 (1) ◽  
pp. 012005
Author(s):  
Liang Xu ◽  
Yibo Liu ◽  
Yanlong Sun
Keyword(s):  
Reinforced Concrete ◽  
Structural Design ◽  
Building Materials ◽  
Market Demand ◽  
Existing Problems ◽  
Dry Drilling ◽  
Matrix Formula ◽  
Drilling System ◽  
Diamond Bit ◽  
Selection Of

Abstract This paper summarizes the current situation, market demand and existing problems of dry drilling for stone and building materials construction at home and abroad. The use and characteristics of dry drilling, the structural design of dry drilling diamond bit and the selection of matrix formula are introduced. Finally, through the test of drilling reinforced concrete with long dry drilling bits, the related equipment of the complete dry drilling system is introduced in detail.

scholarly journals Criteria for evaluating the quality of building materials used at capital repair of multi-apartment houses

2020 ◽  
Vol 17 (2) ◽  
pp. 264-271
Author(s):  
E. N. Desyatko ◽  
◽  
V. D. Staroverov ◽  
A. A. Gerasimenko ◽  
K. Y. Mazneva ◽  
...  
Keyword(s):  
Building Materials ◽  
Capital Repair ◽  
Existing Problems ◽  
Apartment Buildings ◽  
Prioritization Method ◽  
Materials Used ◽  
Selection Of

The article considers the possibility of applying the prioritization method to facilitate the choice between materials with equivalent or similar characteristics when carrying out major repairs in apartment buildings. The currently existing problems of the major repairs of MKD in St. Petersburg are analyzed. A scale of criteria for the selection of materials is given and a methodology for the selection of building materials for the overhaul of apartment buildings is proposed.

Brief Introduction of Structural Design for Lijiang Sports Center Stadium

2013 ◽  
Vol 743 ◽  
pp. 159-163
Author(s):  
Wei Qiang Xu ◽  
Jing Xu Song ◽  
Wen Pan
Keyword(s):  
Reinforced Concrete ◽  
Structural Design ◽  
Concrete Structure ◽  
Pile Foundation ◽  
Reinforced Concrete Structure ◽  
Horizontal Shear ◽  
Shear Forces ◽  
Foundation Design ◽  
Combined Analysis ◽  
Selection Of

This paper focuses on the structural design for Lijiang Sports Center Stadium, reasonable structure partition of the stadium and the combined analysis of the lower part of reinforced concrete structure with the upper part of steel marguise. Besides, foundation design under larger eccentric loads and horizontal shear forces as well as the selection of pile foundation design are also investigated.

Analysis of the selection of building materials for the reconstruction of concrete and reinforced concrete structures damaged by an aggressive environment

2021 ◽  
Vol 80 (2) ◽  
pp. 188-194
Author(s):  
B.M. Aubakirova ◽  
◽  
Е.R. Onlasynov ◽  
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Aggressive Environment ◽  
Selection Of

This article discusses the results of the analysis of the use of building materials in the restoration of concrete and reinforced concrete structures of buildings and structures that erupt from an aggressive environment.

Research and Application of High-Efficiency Multi-Cyclone Dust Removal

2011 ◽  
Vol 109 ◽  
pp. 400-404
Author(s):  
Yan Hong Yang ◽  
Da Fu Ni
Keyword(s):  
Structural Design ◽  
High Efficiency ◽  
Dust Removal ◽  
Working Principle ◽  
Selection Of

Performance and working principle of high-efficiency multi-cyclone were analyzed, and the structural design shortage of original high-efficiency multi-cyclone was pointed out. Its structure was researched and designed, including determination of setting chamber and pipe number, selection of material and the design of cyclones.

scholarly journals On-Site Structural Design Capacity Checker for Reinforced Concrete Beams

2018 ◽  
Vol 429 ◽  
pp. 012018
Author(s):  
S M Razak ◽  
M A Azizan ◽  
A Adnan ◽  
C H Ing ◽  
K W C Tan ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Structural Design ◽  
Concrete Beams ◽  
Reinforced Concrete Beams ◽  
Design Capacity

Damage of Reinforced Concrete Structures due to Steel Corrosion

2015 ◽  
Vol 1111 ◽  
pp. 187-192
Author(s):  
Corina Sosdean ◽  
Liviu Marsavina ◽  
Geert de Schutter
Keyword(s):  
Reinforced Concrete ◽  
Building Materials ◽  
Structural Integrity ◽  
Colorimetric Method ◽  
Concrete Structures ◽  
Steel Corrosion ◽  
Degradation Process ◽  
Reinforced Concrete Structures ◽  
Chloride Ingress ◽  
Rc Structures

Reinforced concrete (RC) became one of the most widely used modern building materials. In the last decades a great interest has been shown in studying reinforcement corrosion as it became one of the main factors of degradation and loss of structural integrity of RC structures. The degradation process is accelerated in the case of RC structures situated in aggressive environments like marine environments or subjected to de-icing salts. In this paper it is shown how steel corrosion of the embedded rebars occurs and how this affects the service life of reinforced concrete structures. Also, an experimental study regarding the combined effect of carbonation and chloride ingress was realized. Samples with and without rebars were drilled from a RC slab which was stored in the laboratory for two years. Non-steady state migration tests were realized in order to determine the chloride profile, while the carbonation depth was measured using the colorimetric method based on phenolphthalein spraying. It was concluded that carbonation has a significant effect on chloride ingress, increasing it.

scholarly journals Comparative Evaluation of Structural Systems for Tapered Tall Buildings

Buildings ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 108
Author(s):  
Kyoung Moon
Keyword(s):  
Structural Design ◽  
Comparative Evaluation ◽  
Building Materials ◽  
Tall Buildings ◽  
Structural Systems ◽  
Lateral Stiffness ◽  
Design Studies ◽  
Structural Efficiency ◽  
Aspect Ratios ◽  
Enormous Amount

Structural efficiency of tapered tall buildings has been well recognized, and many tall buildings of tapered forms have been built throughout the world. Tall buildings are built with an enormous amount of building materials. As one of the most efficient structural forms for tall buildings, the contribution of tapered forms to saving structural materials coming from our limited natural resources could be significant. Structural design of tall buildings is generally governed by lateral stiffness rather than strength. This paper systematically studies the structural efficiency of tapered tall buildings in terms of lateral stiffness. Tall buildings of various heights and angles of taper are designed with different structural systems prevalently used for today’s tall buildings, such as diagrids, braced tubes, and core-outrigger systems. The heights of the studied buildings range from 60 to 100 stories, and the corresponding height-to-width aspect ratios in their non-tapered prismatic forms range from 6.5 to 10.8. The angles of taper studied are 1, 2, and 3 degrees. Gross floor area of each building of the same story height is maintained to be the same regardless of the different angles of taper. Based on design studies, comparative evaluation of the various structural systems for tapered tall buildings is presented.

Proposal of a Simplified Environmental Assessment Method Based on Major Building Materials for School Buildings in Korea

2014 ◽  
Vol 905 ◽  
pp. 353-356
Author(s):  
Seung Jun Roh ◽  
Sung Ho Tae
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Building Materials ◽  
Assessment Method ◽  
School Buildings ◽  
Detailed Assessment ◽  
Impact Assessment Method ◽  
Assessment Result ◽  
Selection Of

The purpose of this study is to propose a simplified environmental impact assessment method based on selection of major building materials for school buildings in Korea. To accomplish this, environmental impact of 2 school buildings constructed in Korea was assessed according to the procedure of life cycle assessment. In addition, major building materials of school buildings were selected from the perspective of 6 environmental impact categories based on the assessment result, and a method of simplified environmental impact assessment was suggested. On one hand, case analysis verified applicability of the simplified environmental impact assessment method proposed in this study by showing similar value within 10% compared to the assessment result from existing detailed assessment.

scholarly journals Effective Strategies on Learning Arabic for Children

ALSINATUNA ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 68
Author(s):  
SOKIP
Keyword(s):  
Foreign Language ◽  
Language Learning ◽  
Learning Strategies ◽  
Research Method ◽  
Learning Strategy ◽  
Existing Problems ◽  
Effective Strategies ◽  
Library Research ◽  
Literary Sources ◽  
Selection Of

Arabic learning can take place at various ages of either children, adolescents or adults. Learning Arabic is something needed for especially Muslim because it is important in Muslim life. This paper will explain about the Arabic learning strategy for children. This is important to discuss because children need special strategies in learning for their ages. In collecting information, the writer uses library research method, which is done by comparing several literary sources, especially those that are the main source of discussion to discuss about the existing problems. Then, as the result, language learning is a help to determine how, and how well, learners learn a foreign language. There are many variations on learning strategy. Arabic learning strategies for children include playing, singing, telling stories, projects, demonstration, and conversation. By using the suitable and fun strategy, children can develop their potential well and effectively. The selection of learning strategies depends on children’s ages and characteristics.  

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