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Computers and Concrete
  Volume 14, Number 5, November 2014 , pages 577-597
DOI: https://doi.org/10.12989/cac.2014.14.5.577
 


Predictive models of hardened mechanical properties of waste LCD glass concrete
Chien-Chih Wang, Her-Yung Wang and Chi Huang

 
Abstract
    This paper aims to develop a prediction model for the hardened properties of waste LCD glass that is used in concrete by analyzing a series of laboratory test results, which were obtained in our previous study. We also summarized the testing results of the hardened properties of a variety of waste LCD glass concretes and discussed the effect of factors such as the water-binder ratio (w/b), waste glass content (G) and age (t) on the concrete compressive strength, flexural strength and ultrasonic pulse velocity. This study also applied a hyperbolic function, an exponential function and a power function in a non-linear regression analysis of multiple variables and established the prediction model that could consider the effect of the water-binder ratio (w/b), waste glass content (G) and age (t) on the concrete compressive strength, flexural strength and ultrasonic pulse velocity. Compared with the testing results, the statistical analysis shows that the coefficient of determination R2 and the mean absolute percentage error (MAPE) were 0.930.96 and 5.48.4% for the compressive strength, 0.830.89 and 8.912.2% for the flexural strength and 0.870.89 and 1.82.2% for the ultrasonic pulse velocity, respectively. The proposed models are highly accurate in predicting the compressive strength, flexural strength and ultrasonic pulse velocity of waste LCD glass concrete. However, with other ranges of mixture parameters, the predicted models must be further studied.
 
Key Words
    concrete; liquid crystal glasses; durability; mechanical properties; prediction model
 
Address
Chien-Chih Wang: Department of Civil Engineering and Geomatics, Cheng Shiu University, Kaohsiung, 833, Taiwan, R.O.C.

Her-Yung Wang and Chi Huang: Department of Civil Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan, R.O.C.
 

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