Impact of Concrete Quality on Sustainability

2014 ◽  
pp. 147-152
Keyword(s):  
Concrete Quality

Establishment of Dedicated Concrete Plant in Site and Efforts to Improve the Concrete Quality

2018 ◽  
Vol 56 (2) ◽  
pp. 144-149
Author(s):  
T. Mukohara ◽  
N. Kanasaki ◽  
K. Watanabe ◽  
K. Kobayashi
Keyword(s):  
Concrete Quality

scholarly journals Reinforced Concrete Bridge Deck Model Considering Delayed Exposure to Chlorides

2019 ◽  
Author(s):  
Petr Konečný ◽  
Petr Lehner ◽  
David Pustka
Keyword(s):  
Reinforced Concrete ◽  
Bridge Deck ◽  
Concrete Bridge ◽  
Reinforced Concrete Bridge ◽  
Corrosion Initiation ◽  
Chloride Induced Corrosion ◽  
Concrete Quality ◽  
Concrete Type ◽  
Concrete Bridge Deck ◽  
Delayed Exposure

The paper is focused on the model of the effect of delayed chloride exposure on the chloride induced corrosion initiation on ideal reinforced concrete bridge. The Finite Element-based numerical model is applied. The effect of concrete quality is expressed in the form of time dependent diffusion coefficient in order to evaluate the effect of concrete type as well as the effect of aging. The influence of extended chloride exposure on the corrosion initiation is introduced.

Study on Techniques for Rapidly Testing the Composition of Concrete Mixture

2013 ◽  
Vol 838-841 ◽  
pp. 30-35
Author(s):  
Xiao Bin Sun ◽  
Tian Ling Du ◽  
Bo Tian
Keyword(s):  
Quality Control ◽  
Laboratory Test ◽  
Rapid Detection ◽  
Measurement Accuracy ◽  
Fresh Concrete ◽  
Concrete Mixture ◽  
Quality Problem ◽  
Detection Techniques ◽  
Concrete Quality ◽  
Practical Engineering

With regards to the quality problem of concrete that cant be found out earlier in the quality control, this paper discussed the principle to rapidly detect composition of concrete mixture and analyzed the measurement accuracy of water checker for fresh concrete through laboratory test. Experiments showed that the error in unit cement and unit water measured by instruments is relatively small and able to meet the accuracy requirements. And, the application of rapid detection techniques to the concrete quality control in practical engineering has achieved good results.

Testing and Green Assessment Technology for Ready-Mixed Concrete

2018 ◽  
Vol 768 ◽  
pp. 306-313 ◽  
Author(s):  
Chun Zhi Zhao ◽  
Yi Liu ◽  
Shi Wei Ren ◽  
Jiang Quan
Keyword(s):  
Quality Control ◽  
Energy Conservation ◽  
Building Material ◽  
Rapid Development ◽  
Green Building ◽  
Process Quality ◽  
Concrete Quality ◽  
Assessment Technology ◽  
Ready Mixed Concrete ◽  
Mixed Concrete

Concrete is the most extensively used material in building and civil project structure. With the rapid development of economic construction, urban construction and infrastructure construction increase year by year, so there is a greater demand for concrete, which brings the rapid development of ready-mixed concrete industry. During the rapid development, structural safety and durability problems caused by concrete quality appear frequently. Meanwhile, to implement the fundamental national policies of resource conservation and environment protection, according to Green Building Action Plan (GUOBANFA [2013] No.1) approved by CPC Central Committee and the State Council, besides meeting the quality requirements, ready-mixed concrete must also meet the green products requirements of "energy conservation, emission reduction, safety, convenience and recyclability" for the vigorous development of green building material and supporting the requirements for building energy conservation, green building and new-type urbanization construction. By quality testing, this paper elaborates the green assessment technology for ready-mixed concrete in combination with raw material quality control, design of mix ratio, production process quality control, construction process quality control, residual concrete treatment, hardened concrete quality control, and control of dust, noise and wastewater. The greening of ready-mixed concrete brings the production and application of green building material, promotes the transformation and upgrading of building material industry and drives the development of green building.

Study on Test Methods for Intelligence-Based Monitoring of Fresh Cement Concrete Quality

2013 ◽  
Vol 857 ◽  
pp. 3-9
Author(s):  
Zi Yi Hou ◽  
Peng Peng ◽  
Jin De Xie ◽  
Shao Peng Zheng ◽  
Ye Zhen Yuan
Keyword(s):  
Theoretical Basis ◽  
Cement Mortar ◽  
Test Methods ◽  
Current Data ◽  
Test Method ◽  
Cement Concrete ◽  
Intelligent Monitoring ◽  
Concrete Quality

A test method for monitoring of cement mortar quality has been devised and an empirical relational equation between cement mortar fluidity and torque has been worked out. A test method for monitoring of indoor fresh cement concrete quality has been devised and a relational equation between fresh cement concrete and torque has been worked out. A test method for monitoring of fresh cement concrete in a mixing plant has been devised and a relational equation between fresh cement concrete and current property has been worked out. By means of online observed torque and current data, relevant fluidity and slump can be predicted to provide test methods and relevant theoretical basis for intelligent monitoring of fresh cement mortar and cement concrete quality in actual engineering.

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