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.

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.

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.

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.

scholarly journals Content of heavy metals in Gentiana lutea L. roots and galenic forms

2007 ◽  
Vol 72 (2) ◽  
pp. 133-138 ◽  
Author(s):  
Dragoja Radanovic ◽  
Svetlana Antic-Mladenovic ◽  
Miodrag Jakovljevic ◽  
Mirjana Kresovic
Keyword(s):  
Heavy Metals ◽  
Quality Control ◽  
Soil Analysis ◽  
Root Tissue ◽  
Raw Material ◽  
Potential Hazard ◽  
Gentiana Lutea ◽  
Liquid Extract ◽  
Very High

An experimental field for the cultivated production of Gentiana lutea L. was established five years ago at the Suvobor Mountain, Serbia. Soil analysis of this area revealed the occurrence of high pseudo-total (Ni - 1270 mg/kg, Cr - 423 mg/kg, Co - 385 mg/kg) and available (especially Ni - 133 mg/kg) heavy metals contents in the soil. Hence, the aim of this research was to evaluate the quality of Gentiana lutea L. - roots and galenic forms (liquid extract in 70 % ethanol, spissum and siccum) produced from the roots, because, for most plants, heavy metals accumulate in the root tissue. The amounts of Ni and Cr found in the analyzed roots were very high (54 mg/kg and 14 mg/kg, respectively). The efficiency of ethanol in extracting heavy metals from the roots varied depending on the particular element. The highest efficiency was obtained for Ni (41.3 %), then for Cd (39.5 %), Pb (37.0%) and Co (30.4 %). According to this, a potential hazard exists for humans, if gentian's galenic forms are produced from the raw material with high heavy metals contents. It is concluded that quality control of the raw material must be carried out before further utilization of gentian. .

scholarly journals Differentiation of Cyanthillium cinereum, a smoking cessation herb, from its adulterant Emilia sonchifolia using macroscopic and microscopic examination, HPTLC profiles and DNA barcodes

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Kannika Thongkhao ◽  
Veerachai Pongkittiphan ◽  
Thatree Phadungcharoen ◽  
Chayapol Tungphatthong ◽  
Santhosh Kumar J. Urumarudappa ◽  
...  
Keyword(s):  
Quality Control ◽  
Smoking Cessation ◽  
Microscopic Examination ◽  
Dna Barcode ◽  
Species Level ◽  
Raw Material ◽  
Phytochemical Analysis ◽  
Dna Barcodes ◽  
Leaf Base

Abstract Cyanthillium cinereum (L.) H.Rob. is one of the most popular herbal smoking cessation aids currently used in Thailand, and its adulteration with Emilia sonchifolia (L.) DC. is often found in the herbal market. Therefore, the quality of the raw material must be considered. This work aimed to integrate macro- and microscopic, chemical and genetic authentication strategies to differentiate C. cinereum raw material from its adulterant. Different morphological features between C. cinereum and E. sonchifolia were simply recognized at the leaf base. For microscopic characteristics, trichome and pappus features were different between the two plants. HPTLC profiles showed a distinct band that could be used to unambiguously differentiate C. cinereum from E. sonchifolia. Four triterpenoid compounds, β-amyrin, taraxasterol, lupeol, and betulin, were identified from the distinct HPTLC band of C. cinereum. The use of core DNA barcode regions; rbcL, matK, ITS and psbA-trnH provided species-level resolution to differentiate the two plants. Taken together, the integration of macroscopic and microscopic characterization, phytochemical analysis by HPTLC and DNA barcoding distinguished C. cinereum from E. sonchifolia. The signatures of C. cinereum obtained here can help manufacturers to increase the quality control of C. cinereum raw material in commercialized smoking cessation products.

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.

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.

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