scholarly journals Construction technology and quality control of double layer continuous paving of cement stabilized macadam base

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Jin Ma
Keyword(s):  
Quality Control ◽  
Double Layer ◽  
New Technology ◽  
Construction Technology ◽  
Construction Quality ◽  
Lower Base ◽  
Contraction Joint ◽  
Interlayer Bonding ◽  
Construction Efficiency

Abstract: the construction method of continuous paving of the upper and lower base of the water stable macadam base can improve the construction efficiency, overcome the quality problems of the traditional layered paving of the upper and lower base, such as untimely curing, slow construction, poor interlayer bonding, contraction joint and interlayer, so as to ensure the construction quality of the water stable macadam. It is also the promotion and application of new technology.

scholarly journals An Analysis on the Construction Technology and Management of Water Resources and Hydropower Projects

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Yong Xiao ◽  
Jidong Chai ◽  
Shun Xiao
Keyword(s):  
Social Benefits ◽  
Construction Technology ◽  
Construction Quality ◽  
Construction Companies ◽  
Quality Of Water ◽  
Water Conservancy ◽  
Construction Efficiency ◽  
National Infrastructure ◽  
Construction Works

As an important national infrastructure, the construction quality of water conservancy and hydropower projects is not only related to people's production and life, but also directly linked to the development of the national economy. Therefore, ensuring the quality of construction works is of great significance. The construction quality of water conservancy and hydropower projects depends to a large extent on the level of construction technology. In addition, construction technology is also inextricably linked to construction efficiency and construction cost. Therefore, construction companies must pay attention to the construction technology management of water conservancy and hydropower projects, and adopt scientific and reasonable construction technology to ensure the project according to the actual situation of construction Quality, give full play to the economic and social benefits brought by the construction of water conservancy and hydropower projects.

scholarly journals Construction Quality Control Study of Double-Layer Continuous Paving for Large-Thickness Cement-Stabilized Base

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
LongTing Ding ◽  
Xuancang Wang ◽  
Mengyuan Zhang ◽  
Jiaqi Meng ◽  
Tao Hu
Keyword(s):  
Quality Control ◽  
Double Layer ◽  
Field Test ◽  
Control Measures ◽  
Test Field ◽  
Construction Quality ◽  
Interval Time ◽  
Bonding State ◽  
Interlayer Bonding ◽  
Cement Stabilized Base

In order to verify the interlayer bonding effect of double-layer continuous paving technology of the thick cement-stabilized base and solve the construction quality control problem of the double-layer continuous paving, based on the interlayer bonding mechanism and the evenness passing mechanism, the laboratory interlayer adhesion test, field test of evenness disturbance, and compaction test were conducted to verify the continuous paving interlayer bonding state. The effect of interval time on interlayer bonding state, evenness, and compactness was analyzed, and construction quality control measures were proposed. The test results show that the double-layer continuous paving process could significantly improve the interlayer bonding state, but there is still a gap from the ideal state (completely continuous). The pull-off strength of continuous paving specimens was 2.1 times that of the discontinuous paving specimens; the shear strength was 2.4 times that of discontinuous paving specimens. At different paving intervals, the longitudinal evenness of the upper and lower layers has little difference. The 140 kN axle load controls the transverse evenness disturbance within 3 mm, which met the requirements of the specification. Based on the evenness passing mechanism, the evenness control standard of double-layer continuous paving base was proposed. The compaction process of double-layer continuous paving base was proposed, and the feasibility was verified through the field test of compaction. The best interval time for double-layer continuous paving was also proposed; it is recommended that the best time for paving the upper layer is after the lower layer is laid for 6 hours (the final setting time of the cement). The construction quality control measures proposed in this study provide a theoretical basis for the construction of double-layer continuous paving technology with thick cement-stabilized base.

scholarly journals Research on Construction Technology and Quality Control of Electromechanical Installation Engineering for Buildings

2020 ◽  
Vol 2 (3) ◽  
pp. 84
Author(s):  
Wending Zhang
Keyword(s):  
Quality Control ◽  
Quality Management System ◽  
Construction Technology ◽  
Construction Quality ◽  
Construction Engineering ◽  
Quality Control Strategy ◽  
And Control ◽  
Installation Technology ◽  
Qualification Rate

<p>Mechanical and electrical installation is a very important construction technology in construction engineering. From the perspective of the construction unit, whether the installation technology and procedure are scientific and reasonable will have a direct impact on the final quality of the project, and it is also closely related to the personal and property safety of the residents. Based on this, construction organizers should construct and perfect a standardized installation construction quality management system, clarify management regulations, and control key technical points, so as to comprehensively improve the quality of electromechanical installation projects and improve the project qualification rate. This article will describe the construction technology and quality control strategy of electromechanical installation engineering, aiming to lay a theoretical foundation for the improvement of engineering qualification rate and construction quality.</p>

Research on the Construction Quality Control of Unbonded Prestressed Concrete

2014 ◽  
Vol 501-504 ◽  
pp. 2195-2198
Author(s):  
Guo Hui Jin ◽  
Xiao Dan Niu ◽  
Xiao Li Wang
Keyword(s):  
Quality Control ◽  
Prestressed Concrete ◽  
Paper Analysis ◽  
Vital Role ◽  
Engineering Practice ◽  
Construction Technology ◽  
Construction Quality ◽  
Technical Content ◽  
Quality Control Study

On account of unbonded prestressed concrete construction technology is a high demand specialized, strict operation, high technical content job [, so the construction quality control study of unbonded prestressed concrete play a vital role to the quality of the structure construction, impact the quality of the whole project. In view of this, this paper analysis and inductive the main point of it from three stages: before, under and after the construction, expect to play a role of reference and guidance to the engineering practice.

Highway Construction Quality and early Disease Control of the Cement Stabilized Gravel in Northeast Cold Region

2012 ◽  
Vol 178-181 ◽  
pp. 1194-1197
Author(s):  
Pei Feng Cheng ◽  
Hai Long Liu
Keyword(s):  
Quality Control ◽  
Disease Control ◽  
Field Test ◽  
Raw Material ◽  
Mix Design ◽  
Construction Technology ◽  
Cold Region ◽  
Early Disease ◽  
Construction Quality

The paper based on the early diseases in the construction discussed the construction quality control through raw material experiment,mix design,test data of indoor test and field test and the construction technology of the cement stabilized gravel base,analyzed the early diseases phenomenon,such as early cracks,frozen block,segregation in the construction.And proposed the feasible measures so as to ensure the construction quality of cement stabilized macadam.

Analysis of Technology and Quality Control Measures of Road Bridge Construction

2014 ◽  
Vol 1055 ◽  
pp. 139-142
Author(s):  
Ming Yang ◽  
Hui Wang ◽  
Feng He ◽  
Qing Min Liu
Keyword(s):  
Quality Control ◽  
Social Development ◽  
Control Measures ◽  
Bridge Engineering ◽  
Construction Technology ◽  
Bridge Construction ◽  
Construction Quality ◽  
The Poor

This paper describes the importance of increasing control of technology and quality of road bridge construction and puts forwards effective measures to control the proposed road bridge construction technology and quality. Road bridge engineering is a basic livelihood projects while also ensuring economic and social development, but in recent years the reports about the quality of bridge construction repeatedly appeared in press which highlighting the poor construction quality control.

Quality Control of EPS External Wall Thermal Insulation System

2011 ◽  
Vol 71-78 ◽  
pp. 4115-4119
Author(s):  
Xiao Qiu Ma
Keyword(s):  
Quality Control ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Insulation System ◽  
Acceptance Criteria ◽  
Construction Quality ◽  
External Wall ◽  
Construction Methods

To ensure the construction quality of EPS external wall thermal insulation system , need to controll raw materials, construction conditions, construction methods and quality control acceptance criteria and other aspects

scholarly journals Discussion on the Safe and Guaranteed Access of Interchange Widening in Reconstruction and Extension of Highway

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Heng Zhang ◽  
Xuguang Zheng ◽  
Jing Zhou
Keyword(s):  
Construction Technology ◽  
Construction Quality ◽  
Important Thing ◽  
Safeguard Measures ◽  
Specific Construction ◽  
Main Construction

In the process of reconstruction and extension of highways, the most important thing is to ensure that the overall level of the widening of interchanges is comprehensively improved to ensure safe traffic. However, due to the heavy and difficult tasks in the widening of interchanges, higher requirements are put forward for the construction quality of the project. In the actual construction of the project, it is necessary to actively analyze and explain the specific construction of the interchange widening project to ensure that the improvement level of the interchange widening in highway reconstruction and extension project is effectively upgraded. This paper gives a detailed introduction to the main construction technology for interchange widening project, clarifies the technical points of safety and guaranteed access, and proposes corresponding safeguard measures to ensure the comprehensive upgrade of the construction quality and standard of interchange widening in highway reconstruction and extension.

Shallow Talk Steel Strand Pre-Tensioned Prestressed Hollow Plate Beam Construction Craft and Quality Control

2012 ◽  
Vol 204-208 ◽  
pp. 2278-2281
Author(s):  
Hong Wei Liu
Keyword(s):  
Quality Control ◽  
Prestressed Concrete ◽  
Highway Bridge ◽  
Direct Relation ◽  
Construction Quality ◽  
Beam System ◽  
Steel Strand ◽  
Part Structure

With the development of prestressing technology, steel strand first should the hollow plate beam of prestressed concrete get in the upper part structure of the highway bridge extensive application, to steel strand first should prestressed concrete hollow plate beam construction quality of quality, not only direct relation arrive bridge of normal usage, also in the meantime relation arrive bridge of safety degree and durable. Therefore acquaint with in the beam system make the process with control first a construction a craft with work well quality control the key being very. This text combine a construction to practice, to steel strand first should prestressed concrete hollow plate beam construction craft, quality control the etc problem make an introduction.

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