scholarly journals Concrete Mix Design By Packing Density Method

2014 ◽  
Vol 11 (2) ◽  
pp. 34-46 ◽  
Author(s):  
Narasimha Raj ◽  
◽  
Suresh G Patil ◽  
B. Bhattacharjee
Keyword(s):  
Packing Density ◽  
Mix Design ◽  
Density Method ◽  
Concrete Mix Design ◽  
Concrete Mix

scholarly journals Concrete Mix Design for Completely Recycled Fine Aggregate by Modified Packing Density Method

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3535
Author(s):  
Yibo Yang ◽  
Baixi Chen ◽  
Yan Su ◽  
Qianpu Chen ◽  
Zhiji Li ◽  
...  
Keyword(s):  
Packing Density ◽  
Unit Price ◽  
Mix Design ◽  
Concrete Mixture ◽  
Fine Aggregate ◽  
Density Method ◽  
Concrete Mix Design ◽  
Recycled Fine Aggregate ◽  
Concrete Mix ◽  
Aggregate System

The undesirable properties of conventional recycled fine aggregate (RFA) often limit its application in the construction industry. To overcome this challenge, a method for preparing completely recycled fine aggregate (CRFA), which crushes all concrete waste only into fine aggregate, was proposed. The obtained CRFA had high apparent density, and its water absorption was lower than that of the conventional RFA. To take advantage of the CRFA, this paper introduced the modified packing density method for the CRFA concrete mix design. The modified packing density method took account of the powder with a particle size of smaller than 75 μm in the CRFA and balanced both the void ratio and the specific surface area of the aggregate system. Concrete (grade C55) was prepared using the CRFA to validate the feasibility of the proposed method. The unit price of the prepared CRFA concrete was around 12.7% lower than that of the natural aggregate concrete. Additionally, the proposed procedure for the concrete mixture design could recycle all concrete waste into the new concrete and replace all the natural fine aggregate in the concrete mixture.

Concrete Mix Design Using Particle Packing Method: Literature Review, Analysis, and Computation

2021 ◽  
Vol 2 (1) ◽  
pp. 83-102
Author(s):  
Shreya Sunil Tolmatti ◽  
◽  
Sanskruti Jaywant Jadhav ◽  
Sakshi Satish Jadhav ◽  
Mayur M. Maske ◽  
...  
Keyword(s):  
Packing Density ◽  
Particle Packing ◽  
Fine Aggregate ◽  
Density Method ◽  
Correlation Curve ◽  
Concrete Mix Design ◽  
Concrete Mix ◽  
Concrete Quality ◽  
Paste Content

Particle packing technology is used to reduce the amount of cement in concrete by optimizing the concrete mix, resulting in more sustainable concrete. In this study, four different methods were used to determine the distribution of the mixture presented; packing density method, packing density method, IS code method, and packing density method. In the packing density method, the paste content that exceeds the voids will increase along with the increase in the quality of the concrete. In cases of packing density, the cement-water ratio decreases with the quality of the concrete. In the packing of too many trials, trials and tribulations should be carried out to achieve the ratio of water-cement and paste content for a certain grade of concrete. This correlation curve helps reduce the experiments involved in determining the ratio of semen and paste content for a given concrete quality. The water and cement contents for the packing density and the IS code method are almost the same for each particular concrete class. The workability of concrete achieved was more in the packing density method than the IS code method for the same concrete quality, because the water-cement ratio was slightly higher in the packing density method than the IS code method. The required fine aggregate particles are more in terms of packing density method compared to the IS code method. Therefore, more water and cement are required in terms of packing density. The correlation curve can be used to determine the ratio of water-cement and paste the content that exceeds the voids for a certain concrete quality

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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