Experimental and Application Study of a New Type High Strength Repairing Mortar for Hydraulic Concrete

2013 ◽  
Vol 387 ◽  
pp. 72-76 ◽  
Author(s):  
Fei Wu ◽  
Chao Hua Jiang ◽  
Ying Di Liao ◽  
Li Jun Hou
Keyword(s):  
Quality Control ◽  
High Strength ◽  
Concrete Surface ◽  
Repair Process ◽  
Good Mechanical Property ◽  
Construction Technology ◽  
Bonding Performance ◽  
Hydraulic Concrete ◽  
Surface Damages ◽  
Repairing Effect

Be aimed at concrete surface damages of hydraulic concrete structures, a high strength repairing mortar was made in this paper. The mechanical properties and durability of repairing mortar were studied. Samples of repairing mortar preparation in laboratory and in field were tested respectively and its repair process and quality control was discussed. The results show that the repairing mortar has good mechanical property, obviously anti-abrasion property and excellent bonding performance. It can play an important role in concrete repairing in the field of hydraulic engineering. The sample property from field is a little lower than of laboratory made but still superior to design index. To achieve good repairing effect, construction technology and quality control is also the important factor.

Industrial Test on Outer Frozen Shaft Wall of High Strength and High Performance Concrete

2011 ◽  
Vol 179-180 ◽  
pp. 569-574
Author(s):  
Zhong Wen Yue ◽  
Hui Zhang ◽  
Bo Yang Dou
Keyword(s):  
Quality Control ◽  
Industrial Application ◽  
High Performance ◽  
High Performance Concrete ◽  
High Strength ◽  
Industrial Test ◽  
Construction Technology ◽  
Study Results ◽  
Shaft Lining ◽  
Shaft Wall

To study the industrial technology for application of the C100 High strength and high performance concrete which is in freezing shaft lining of thick overburden, the industrial test of the shaft wall of high strength and high performance concrete is carried out under the engineering background of auxiliary shaft in Yuncheng coal mine of Juye coal mining area in Shandong Province. The verified laboratory testing results comported with the results of industrial technology from macro-mechanics, failure fractal, resultant morphology and pore characteristics. And the quality control system of high performance concrete and construction technology can be established. The results show that the experimental formula and construction technology of C100 high strength and high performance concrete can meet the requirement of field concrete shaft lining and achieve the high level of quality control. The industrial application and study results accord with the field requirement. Furthermore, the study results also provide experimental basis and industrial production data for industrial application of C100 high strength and high performance concrete.

Pump Concrete Construction Technology

2012 ◽  
Vol 229-231 ◽  
pp. 2518-2521
Author(s):  
Li Gong Sun
Keyword(s):  
Quality Control ◽  
High Strength ◽  
Modern Architecture ◽  
Construction Technology ◽  
Concrete Construction ◽  
Large Span ◽  
Railway Engineering

In recent years, pump concrete construction technology is widely put in use because the modern architecture trends to over- height, large- span, and over-load. In the basis of the railway engineering examples, the thesis elaborates the ratio design of high-strength pump concrete, construction technology and quality control with reference to projects of the same kind.

Application of 0.8 Design Factor in China Gas Pipeline

2019 ◽  
Vol 944 ◽  
pp. 965-974
Author(s):  
Ke Wang ◽  
Jin Heng Luo ◽  
Wen Ying Hui ◽  
Xin Wei Zhao ◽  
Wei Feng Ma ◽  
...  
Keyword(s):  
Quality Control ◽  
High Strength ◽  
Management Plan ◽  
Construction Technology ◽  
Pipe Inspection ◽  
Design Factor ◽  
The Third ◽  
Assessment Design ◽  
Integrity Management ◽  
Pipeline Project

The paper reviews current situation of high design factor application abroad, and analyzes development of high-strength pipeline in China. It shows that related technology has greatly improved in China, such as manufacture of high strength pipe, inspection, quality control, pipeline construction and pipeline integrity management. So it is available to use 0.8 design factor for the class one location in China. And the paper also introduces trial section experiences in the third West-East pipeline on safety pre-assessment, design check, pipe specification, construction technology and integrity management plan. With relative specifications further perfected, it is promising to put the 0.8 design factor into a wide use in Chinese pipeline project.

Introduction to the Construction Management of Architectural Decoration

2013 ◽  
Vol 405-408 ◽  
pp. 3486-3489
Author(s):  
Guo Quan Zhang
Keyword(s):  
Quality Control ◽  
Technology Management ◽  
Surface Treatment ◽  
Construction Management ◽  
Construction Technology

Architectural decoration decoration materials are used by people or decorations, the building and space for all kinds of surface treatment, the use of in order to improve the building comfort.In architectural decoration, engineering quality is directly related to the credibility of enterprises and the effect of the project, and use function. In this paper, from the architectural decoration construction technology management and quality control two aspects to discuss. First of all analyzes the optimization measures of architectural decoration construction technology management, the second for the quality control of several factors is analyzed and summarized.

Planning and Control in Construction of LW3-1 Jacket

2013 ◽  
Vol 467 ◽  
pp. 277-281
Author(s):  
Shao Ning Han ◽  
Hong Wang ◽  
Hang Wu ◽  
Pi Song Sun ◽  
Yu Hui Xue ◽  
...  
Keyword(s):  
Quality Control ◽  
Process Control ◽  
Deep Water ◽  
Construction Technology ◽  
Structural Dimension ◽  
Planning And Scheduling ◽  
Comprehensive Management ◽  
Planning And Control ◽  
Traditional Classification ◽  
And Control

According to Chinese traditional classification, large-sized jackets weight over 10,000 tons and stand in over 100-meter water. Large-sized jackets are different from the normal in construction tonnage, structural dimension and quality control requirements as well as construction difficulty. More complicated construction technology and programme, higher grade of materials, stricter control requirements on node weld and higher risks all need matched stricter, more meticulous and more comprehensive management in planning and scheduling. Combined with construction of LW3-1 deep-water jacket, this paper describes the planning, tracking progress, process control and optimization.

Numerical Study on Mechanical Behavior of Tissue-Engineering Repaired Cartilage in Sliding Load Condition

2013 ◽  
Vol 441 ◽  
pp. 598-601
Author(s):  
Yu Zhou ◽  
Hai Ying Liu ◽  
Yu Tao Men ◽  
Li Lan Gao ◽  
Bao Shan Xu ◽  
...  
Keyword(s):  
Numerical Study ◽  
Compressive Strain ◽  
Load Condition ◽  
Repair Process ◽  
Cartilage Defects ◽  
Biphasic Model ◽  
Artificial Cartilage ◽  
Repairing Effect ◽  
Intensity Of Exercise ◽  
Engineered Cartilage

Mechanical state has a major impact on the repairing effect of tissue-engineered cartilage. The unusual state could result in the degeneration of artificial and host cartilage. A repaired cartilage defects was simulated by finite element simulation based on fiber-reinforced biphasic model in sliding load condition. The results showed that in the surrounding area of defects Mises stress, compressive strain and pore pressure are affected by the amount of compression and modulus of materials. Inadequate modulus leads to the declining mechanical bearing ability in defected position, while excessive modulus leads to increasing difference between the pressure on the two sides of bonding surface between artificial cartilage and host cartilage. During the repair process, it is suggested to choose the artificial cartilage modulus with both reasonable bearing ability and less stress concentration should be considered, and the intensity of exercise should also decrease to reduce the amount of compression.

Construction Technology Research of RC Beams Strengthened with Prestressed CFRP Plates

2011 ◽  
Vol 268-270 ◽  
pp. 659-663
Author(s):  
Hua Chen ◽  
Kan Kang ◽  
Lang Ni Deng
Keyword(s):  
Crack Resistance ◽  
Concrete Beams ◽  
High Strength ◽  
The Self ◽  
Bending Test ◽  
Construction Technology ◽  
Rc Beams ◽  
Test Results ◽  
Technology Research ◽  
Flexural Capacity

The method of applying prestress to CFRP plates can make full use of the characteristics of high-strength, enhance the force properties, prevent peeling damage and reduce the strain lag. Construction technology of prestressed CFRP plates strengthening reinforcement concrete beams was introduce in this paper, and bending test of 6 reinforcement concrete beams strengthened with prestressed CFRP plates were carried out based on the self-developed prestressed CFRP plates supporting anchorages. The test results indicate that the flexural capacity and crack resistance capacity can be increased compared with non-prestressed CFRP plates, and the construction technology can be adopted in practical projects.

Review From Multiple Perspectives for the State of the Practice on the Use of Recycled Asphalt Materials and Recycling Agents in Asphalt Concrete Surface Mixtures

2021 ◽  
pp. 036119812110611
Author(s):  
Jhony Habbouche ◽  
Ilker Boz ◽  
Benjamin Shane Underwood ◽  
Cassie Castorena ◽  
Saqib Gulzar ◽  
...  
Keyword(s):  
Quality Control ◽  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Concrete Surface ◽  
Lessons Learned ◽  
Multiple Perspectives ◽  
Recycled Asphalt ◽  
Recycled Materials ◽  
Continuous Quality ◽  
Virginia Department

The objective of this paper is to provide information from multiple perspectives on the current state of the practice with regard to using recycled materials and recycling agents (RAs) in asphalt concrete mixtures. This information was collected through a survey of U.S. transportation agencies and RA suppliers combined with a search of RA-related specifications and pilot projects previously constructed. Moreover, a case study describing the Virginia Department of Transportation’s experience with RAs provides a tangible example of how at least one agency is approaching the potential implementation of these technologies. This practice review was achieved by documenting the experience, lessons learned, and best practices of multiple asphalt experienced contractors and asphalt binder suppliers in the Virginia area. This paper follows a similar survey conducted in 2014 as part of NCHRP 09-58 and provides a second look at the use of RAs across North America. Not all state departments of transportation have experience with using RAs. Factors preventing the use of RAs included specification limitations, lack of expertise in processing recycled materials, supporting data, and negative prior experiences. Developing a performance-based testing framework is mandatory for the successful use of RAs. In general, good and frequent communication with the RA supplier is critical and necessary during the planning stages, the production of mixtures, and the continuous quality control by the supplier to resolve issues when they arise. Finally, a strong quality control and quality assurance-testing program should be implemented to ensure that materials meet the properties needed to produce a good-performing mixture.

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