Study on Construction Parameters of Cement Deep Mixing Piles

2012 ◽  
Vol 226-228 ◽  
pp. 1386-1389
Author(s):  
Wen Tao Rong
Keyword(s):  
Rotation Speed ◽  
Construction Process ◽  
Construction Quality ◽  
Research Results ◽  
Deep Mixing ◽  
Shaft Rotation ◽  
And Control ◽  
Construction Efficiency ◽  
Cement Deep Mixing

Construction quality is one of the main reasons which lead to the failure of cement deep mixing pile. In order to ensure the construction quality of cement deep mixing pile and control its construction process, the influence of four construction parameters such as slurry conveying capacity, drilling and hoisting speed, agitation shaft rotation speed and remixing times on pile quality are analyzed. At last key reasons to ensure the construction quality of cement deep mixing pile are pointed out. Pile quality and construction efficiency should be considered when construction parameters being optimized. The research results provide reference for construction of cement deep mixing piles in the future.

Perbaikan Kualitas Produk Batu Bata Merah Dengan Metode Six Sigma-Dmaic (Studi Kasus Cv. Ghatan Fatahillah Karawang)

UNISTEK ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 6-10
Author(s):  
Egar Naufal Ari Satya ◽  
Wahyudin Wahyudin
Keyword(s):  
Quality Control ◽  
Customer Satisfaction ◽  
Six Sigma ◽  
Quality Standards ◽  
Research Results ◽  
Machine Performance ◽  
Fishbone Diagram ◽  
And Control ◽  
Dmaic Method

Abstrak. Dunia industri yang semakin berkembang akan mengakibatkan banyaknya persaingan. Perus-ahaan yang dapat bersaing adalah perusahaan yang dapat menjaga  kualitas produknya dengan baik sehingga dapat memenuhi kepuasan konsumen. Maka dari itu diperlukan pengendalian kualitas. Penelitian ini difokuskan pada penurunan cacat pada produk batu bata merah di CV. Ghatan Fatahillah dengan metode Six Sigma-DMAIC (Define, Measure, Analyze, Improve, dan Control). Dari hasil penelitian didapatkan DPMO sebesar 36.212 dengan nilai sigma 3,29. Jenis cacat yang paling sering terjadi pada batu bata merah yaitu pecah/patah yaitu sebesar 4.327 atau 59,81% dari total keseluruhan produk yang cacat.  Hasil dari tahap analyze dengan fishbone diagram, ditetapkan penyebab dari pecah/cacat, yaitu: pekerja kurang paham standar kualitas, tidak adanya pemeriksaan produk, pekerja kurang paham prosedur kerja, kinerja mesin tidak stabil, pekerja kurang teliti,  jumlah penggilingan tidak menentu, dan komposisi batu bata tidak menentu. Maka perlu dilakukan usulan perbaikan agar dapat mengurangi jumlah produk yang cacat pada batu bata merah. Kata kunci: DMAIC, DPMO, Pengendalian Kualitas, Six Sigma Abstract. The growing industrial world will result in a lot of competition. Companies that can compete are companies that can maintain the quality of their products well so that they can meet customer satisfaction. Therefore, quality control is needed. This research is focused on reducing defects in red brick products at CV. Ghatan Fatahillah with the Six Sigma-DMAIC method (Define, Measure, Analyze, Improve, and Control). From the research results obtained DPMO of 36,212 with a sigma value of 3.29. The type of defect that most often occurs in red bricks is broken / broken, which is 4,327 or 59.81% of the total defective products. The results of the Analyze stage with the fishbone diagram showed that the causes of breakage / defects were determined, namely: workers do not understand quality standards, lack of product inspection, workers do not understand work procedures, unstable machine performance, workers are not careful, the number of mills is erratic, and composition erratic bricks. So it is necessary to make improvement proposals in order to reduce the number of defective products in red bricks. Keywords: DMAIC, DPMO, Quality Control, Six Sigma

scholarly journals Analysis of Construction Quality Problems of Indoor Drainage Installation

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Yisong Yin ◽  
Xiaolong Ruan
Keyword(s):  
Human Health ◽  
Water Pressure ◽  
Construction Process ◽  
Internal Drainage ◽  
Construction Quality ◽  
Drainage Pipe

If the indoor drainage pipe is blocked and the drainage is not smooth, sewage and pollutants will enter the room and endanger human health. If the pipeline is blocked as a result, a certain intensity of water pressure may be brought, which may cause pipeline leakage. In this article, we will analyze and explain the quality problems that often occur during the construction process due to the blockage of the internal drainage pipe, and propose appropriate methods and solutions to improve the quality of the project.

scholarly journals Research on Algorithm to Improve Accuracy of Temperature Measurement of Moving Strong Reflector

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Shaoliang Wei ◽  
Yuanjia Yang ◽  
Fengyu Cheng
Keyword(s):  
Surface Temperature ◽  
Temperature Measurement ◽  
Rotation Speed ◽  
Field Investigation ◽  
Improve Measurement ◽  
Aluminum Processing ◽  
Speed Change ◽  
Infrared Temperature Measurement ◽  
And Control

The roll is necessary and important equipment in aluminum processing, and its surface temperature will change its thermal expansion. The gap shape between rolls will change accordingly, affecting the quality of aluminum products. Therefore, it is important to monitor and control the roll surface temperature. The roller is a highly reflective body that rotates continuously during work. This article proposes an infrared temperature sensor to measure its surface temperature. Through field investigation and a literature review, we know that a roller’s motion will affect the accuracy of its surface temperature measurement. An infrared temperature measurement compensation algorithm based on rotation speed is constructed to eliminate this influence. Experimental results show that this method can make up for the temperature measurement error caused by the change of rotation speed and hence improve measurement accuracy. The algorithm is simple and adaptable and provides a new method to improve the accuracy of temperature measurement given speed change.

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 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>

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 Application of Survey Technology in Geotechnical Engineering Investigation

2021 ◽  
Vol 276 ◽  
pp. 02021
Author(s):  
Xiang Gao
Keyword(s):  
Geotechnical Engineering ◽  
Engineering Industry ◽  
Measurement Technology ◽  
Construction Process ◽  
Construction Quality ◽  
Construction Engineering ◽  
Engineering Construction ◽  
Engineering Survey ◽  
Engineering Investigation

With the continuous development of the construction engineering industry, geotechnical engineering construction has attracted more and more attention from the society. In the construction process of geotechnical engineering, scientific and reasonable engineering investigation is the key to ensuring construction quality and improving engineering safety. Based on this, this article analyzes the application of measurement technology in the process of geotechnical engineering investigation. It is hoped that through this analysis, the application effect of measurement technology in geotechnical engineering survey can be effectively improved, and the quality of geotechnical engineering survey can be improved, so as to promote the overall construction quality and safety of geotechnical engineering.

scholarly journals Comprehensive Management Strategy for Tunnel Construction Quality Inspection and Monitoring

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Xiong Zhou
Keyword(s):  
Management Strategy ◽  
Tunnel Construction ◽  
Quality Inspection ◽  
Construction Process ◽  
Construction Quality ◽  
Comprehensive Management

With the increase in the number and scale of tunnel projects in China in recent years, the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more and more attention. Based on this, this paper analyzes the comprehensive management of quality inspection and monitoring during tunnel construction to ensure the quality of tunnel construction.

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