scholarly journals A Computer-Aided Approach to Pozzolanic Concrete Mix Design

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Ching-Yun Kao ◽  
Chin-Hung Shen ◽  
Jing-Chi Jan ◽  
Shih-Lin Hung
Keyword(s):  
Compressive Strength ◽  
Prediction Models ◽  
Numerical Data ◽  
Mix Design ◽  
Concrete Mixture ◽  
Engineering Applications ◽  
Mixture Proportioning ◽  
Concrete Mix Design ◽  
Concrete Mix ◽  
Computer Aided

Pozzolanic concrete has superior properties, such as high strength and workability. The precise proportioning and modeling of the concrete mixture are important when considering its applications. There have been many efforts to develop computer-aided approaches for pozzolanic concrete mix design, such as artificial neural network- (ANN-) based approaches, but these approaches have proven to be somewhat difficult in practical engineering applications. This study develops a two-step computer-aided approach for pozzolanic concrete mix design. The first step is establishing a dataset of pozzolanic concrete mixture proportioning which conforms to American Concrete Institute code, consisting of experimental data collected from the literature as well as numerical data generated by computer program. In this step, ANNs are employed to establish the prediction models of compressive strength and the slump of the concrete. Sensitivity analysis of the ANN is used to evaluate the effect of inputs on the output of the ANN. The two ANN models are tested using data of experimental specimens made in laboratory for twelve different mixtures. The second step is classifying the dataset of pozzolanic concrete mixture proportioning. A classification method is utilized to categorize the dataset into 360 classes based on compressive strength, pozzolanic admixture replacement rate, and material cost. Thus, one can easily obtain mix solutions based on these factors. The results show that the proposed computer-aided approach is convenient for pozzolanic concrete mix design and practical for engineering applications.

Concrete mix design

2017 ◽  
pp. 249-258
Author(s):  
Marios Soutsos ◽  
Peter Domone
Keyword(s):  
Mix Design ◽  
Concrete Mix Design ◽  
Concrete Mix

Concrete mix design

2018 ◽  
pp. 162-168
Author(s):  
Peter Domone ◽  
John Illston
Keyword(s):  
Mix Design ◽  
Concrete Mix Design ◽  
Concrete Mix

scholarly journals Studi Penggunaan Bahan Aditif Dan Variasi Dosis Accelerator Terhadap Perkerasan Beton Yang Dipercepat (Studi Kasus Mutu Beton K-300)

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
Suhaimi Suhaimi ◽  
R. Dedi Iman Kurnia
Keyword(s):  
Mix Design ◽  
Concrete Mix Design ◽  
Chemical Admixture ◽  
Concrete Mix ◽  
Mineral Additive

Penelitian ini bertujuan untuk mengetahui hasil pengujian kuat tekan awal beton kombinasi sikafume (mineral additive) dan variasi dosis penggunaan accelerator (chemical admixture). Penelitian ini menggunakan metode eksperimental. Adapun prosedur penelitian dimulai dengan studi literatur, dilanjutkan dengan persiapan material, pemeriksaan sifat fisis agregat, perencanaan campuran beton (concrete mix design), pembuatan dan perawatan benda uji, serta pengujian benda uji berupa pengujian slump dan pengujian kuat tekan serta analisis data. Berdasarkan hasil dan pembahasan penelitian terkait dengan nilai kuat tekan beton, maupun bentuk atau workability dan waktu perkerasan adalah sebagai berikut: 1) hasil uji kuat tekan beton kombinasi sikafume dengan variasi dosis penggunaan accelerator 1:2 memiliki nilai kuat tekan rata-rata sebesar 26,823 Mpa dan 31,280 Mpa untuk umur pengujian 24 dan 72 jam; 2) hasil uji kuat tekan beton kombinasi sikafume dengan variasi dosis penggunaan accelerator 1:3,5 memiliki nilai kuat tekan rata-rata sebesar 24,913 Mpa dan 30,643 Mpa untuk umur pengujian 24 dan 72 jam; 3) hasil uji kuat tekan beton kombinasi sikafume dengan variasi dosis penggunaan accelerator 1:5 memiliki nilai kuat tekan rata-rata sebesar 23,640 Mpa dan 30,325 Mpa untuk umur pengujian 24 dan 72 jam; 4) nilai slump yang diperoleh pada setiap variasi benda uji lebih besar dari yang direncanakan dalam mix design, yaitu nilai slump yang diperoleh termasuk katagori slump runtuh; dan 5) kombinasi sikafume dan variasi dosis accelerator dapat mempercepat waktu perkerasan dengan nilai kuat tekan rata-rata di atas 24,90 Mpa atau K-300 dalam waktu 24 dan 72 jam

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