scholarly journals Pengaruh Penambahan RD 31 pada Beton dengan Substitusi Ground Granulated Blast Furnance Slag

2021 ◽  
Vol 6 (3) ◽  
pp. 191
Author(s):  
Anni Susilowati ◽  
Serin Ginting
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Physical And Mechanical Properties ◽  
Optimum Level ◽  
Analysis Method ◽  
Granulated Blast Furnace Slag ◽  
Effect Regression ◽  
Furnace Slag

ABSTRAKJauhnya lokasi batching plant dengan tempat penuangan kerapkali membuat beton setting sehingga dibutuhkan bahan tambah retarder. Ground Granulated Blast Furnace Slag (GGBFS) memiliki komposisi kimia mirip semen. Oleh karena itu, dilakukan penelitian penambahan retarder pada beton dengan substitusi GGBFS sebagai pengganti sebagian semen untuk mengetahui pengaruh (dengan uji regresi SPSS),  sifat  fisik  dan  mekanik  beton,  serta  mendapatkan kadar  optimum penambahan retarder. Metode penelitian ini menggunakan metode eksperimental dengan variasi campuran 90% semen, 10% GGBFS dengan retarder 0%, 0,2%, 0,4%, dan 0,6% berat semen dengan fas 0,5 sesuai SNI 03-2834-2000. Hasil penelitian menunjukkan retarder 0,2% - 0,6% mampu meningkatkan kuat tekan sebesar 19,61 - 50,59%. Berdasarkan hasil penelitian diperoleh kadar optimum 0,2% karena memiliki sifat paling baik.Kata kunci: GGBFS, kuat tekan, retarder ABSTRACTLong distance between batching plant to the pouring area often causes the concrete undergo a setting, so that a retarder addition material is needed. Ground Granulated Blast Furnace Slag (GGBFS) which has a chemical composition similar to cement. Therefore, a research was conducted on retarder addition to concrete with GGBFS substitution as a partial cement substitute to obtain the effect (regression analysis method in SPSS), physical and mechanical properties of concrete, and to obtain the optimum level of retarder addition. This research used an experimental method with a mixture variation of 90% cement, 10% GGBFS with retarder percentage as follows; 0%, 0.2%, 0.4%, and 0.6% of cement weight with a water/cement is 0.5 according to SNI 03-2834-2000. The results of research with the addition of a retarder of 0.2% - 0.6% were able to increase the compressive strength by 19.61 - 50.59%. Based on the results, the optimum level of retarder is at a variation of 0.2% as it has the best physical and mechanical properties.Keywords: GGBFS, compressive strength, retarder

scholarly journals Aging effect on the physical and mechanical properties of granulated blast furnace slag as lightweight banking

2012 ◽  
Vol 7 (1) ◽  
pp. 339-349 ◽  
Author(s):  
Hiroshi MATSUDA ◽  
Ryohei ISHIKURA ◽  
Masahiro WADA ◽  
Naoyoshi KITAYAMA ◽  
Wonjin BEAK ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Physical And Mechanical Properties ◽  
Aging Effect ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

INVESTIGATED THE CARBONATION BEHAVIOR OF CONCRETE BY ADDED GROUND GRANULATED BLAST FURNACE SLAG (GGBS)

2021 ◽  
Vol 25 (Special) ◽  
pp. 2-99-2-107
Author(s):  
Zainab A. Mohammed ◽  
◽  
Ismail I. Marhoon ◽  
Keyword(s):  
Mechanical Properties ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Physical And Mechanical Properties ◽  
Replacement Ratio ◽  
Cement Replacement ◽  
Granulated Blast Furnace Slag ◽  
Material Deposition ◽  
Reinforcement Material ◽  
Furnace Slag

Constructors and researchers have been concerned about carbonation because it has been a concern of the concrete by decreasing the interstitial solution's pH, it may encourage the reinforcement material deposition for reinforced concrete and subsequent corrosion. The use of geopolymeric materials, such as Ground Granulated Blast Furnace Slag (GGBS), is one of the factors that affect carbonation. This study explores the effects of replacement 0, 20, 40, and 60% from cement mass by GGBS on the physical and mechanical properties in particular, the carbonation of concrete. According to the results, it was observed that the higher the percentage of cement replacement with GGBS, the lower the carbonization depth, as the best result was achieved at the replacement ratio of 60%. As for the compressive strength, it increases with an increase in the proportion of cement replacement with GGBS. Moreover, the addition of GGBS reduced the water absorption.

The Influence of the Properties of the Material Used for Obtaining Geopolymers on Their Structure and Compressive Strength

2017 ◽  
Vol 68 (6) ◽  
pp. 1182-1187
Author(s):  
Ilenuta Severin ◽  
Maria Vlad
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Wheat Straw ◽  
Red Mud ◽  
Blast Furnace Slag ◽  
Complex Structure ◽  
Point Of View ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag ◽  
Straw Ash

This article presents the influence of the properties of the materials in the geopolymeric mixture, ground granulated blast furnace slag (GGBFS) + wheat straw ash (WSA) + uncalcined red mud (RMu), and ground granulated blast furnace slag + wheat straw ash + calcined red mud (RMc), over the microstructure and mechanical properties of the synthesised geopolymers. The activation solutions used were a NaOH solution with 8M concentration, and a solution realised from 50%wt NaOH and 50%wt Na2SiO3. The samples were analysed: from the microstructural point of view through SEM microscopy; the chemical composition was determined through EDX analysis; and the compressive strength tests was done for samples tested at 7 and 28 days, respectively. The SEM micrographies of the geopolymers have highlighted a complex structure and an variable compressive strength. Compressive strength varied from 24 MPa in the case of the same recipe obtained from 70% of GGBFS + 25% WSA +5% RMu, alkaline activated with NaOH 8M (7 days testing) to 85 MPa in the case of the recipe but replacing RMu with RMc with calcined red mud, alkaline activated with the 50%wt NaOH and 50%wt Na2SiO3 solution (28 days testing). This variation in the sense of the rise in compressive strength can be attributed to the difference in reactivity of the materials used in the recipes, the curing period, the geopolymers structure, and the presence of a lower or higher rate of pores, as well as the alkalinity and the nature of the activation solutions used.

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