Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
An irregular distribution of steel fibers in fresh concrete results in a complex structure. This causes changes in the behavior of hardened concrete members, even in the response of those produced under the same conditions. Therefore, it is fairly difficult to predict the performance of steel fiber added lightweight concrete. This study investigates the usability of artificial neural network (ANN) to estimate the compressive strength of such concrete. For this purpose, normal strength lightweight concrete with 350, 400, and 450kg/m3 cement dosages are produced. The Dramix RC-80/0.60-BN type steel fibers are added to each specimen at the dosages of 0, 10, 20, 30, 40, 50, and 60kg/m3 leading to a total of 126 cylindrical samples of the size 150 x 300 mm. The compressive strength of the specimen is then experimentally determined. The parameters considered for the ANN inputs are the amounts of steel fiber, water, water-cement ratio, cement, pumice sand, pumice gravel, and super plasticizer. The test results obtained from the ANN are compared with the multi linear regression technique based on mean square error, mean absolute error, and correlation coefficient criteria. The study concludes that the ANN predicts the compressive strength of steel fiber added lightweight concrete better than does the MLR.
An irregular distribution of steel fibers in fresh concrete results in a complex structure. This causes changes in the behavior of hardened concrete members, even in the response of those produced under the same conditions. Therefore, it is fairly difficult to predict the performance of steel fiber added lightweight concrete. This study investigates the usability of artificial neural network (ANN) to estimate the compressive strength of such concrete. For this purpose, normal strength lightweight concrete with 350, 400, and 450kg/m3 cement dosages are produced. The Dramix RC-80/0.60-BN type steel fibers are added to each specimen at the dosages of 0, 10, 20, 30, 40, 50, and 60kg/m3 leading to a total of 126 cylindrical samples of the size 150 x 300 mm. The compressive strength of the specimen is then experimentally determined. The parameters considered for the ANN inputs are the amounts of steel fiber, water, water-cement ratio, cement, pumice sand, pumice gravel, and super plasticizer. The test results obtained from the ANN are compared with the multi linear regression technique based on mean square error, mean absolute error, and correlation coefficient criteria. The study concludes that the ANN predicts the compressive strength of steel fiber added lightweight concrete better than does the MLR.
Predicting the compressive strength of steel fiber added lightweight concrete using neural network
Computational Materials Science ; 42 ; 259-265
2008
7 Seiten, 25 Quellen
Aufsatz (Zeitschrift)
Englisch
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