Strength properties of concrete incorporating coal bottom ash and granulated blast furnace slag

2007 ◽  
Vol 27 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Ömer Özkan ◽  
Isa Yüksel ◽  
Özgür Muratoğlu
2018 ◽  
Vol 9 (4) ◽  
pp. 1557-1566 ◽  
Author(s):  
Ghasan F. Huseien ◽  
Jahangir Mirza ◽  
Mohammad Ismail ◽  
S.K. Ghoshal ◽  
Mohd Azreen Mohd Ariffin

In this study, geopolymer concrete is prepared by using 100% Ground Granulated Blast furnace Slag (GGBS). Then the GGBS is replaced by Metakaolin from 0 to 25% with the variation of 5% for preparing the specimens. The activator solution consists of Sodium hydroxide of 12 Molarity and sodium silicate in the ratio of 1: 2.5. 550kg/m3 of GGBS is used in this study. A carboxylic based admixture called La Hypercrete S25 is added in the mix by 1% of the weight of GGBS to increase the workability. The studies conducted on the specimens are compression test, split tensile test and flexure test. For conducting the compression test, 54 concrete cubes of size 100mm x 100mm x 100mm are cast for testing at 7, 14 and 28 days. For splitting tensile strength, 54 concrete cylinders with 100 mm dia and 200 mm height are cast for testing at 7, 14 and 28 days. The flexure test specimens are beams of 500 mm length and 100mm x 100mm in cross section are cast. These are 54 in numbers .Specimens are cast by replacing the GGBS by Metakaolin in 5, 10, 15, 20 and 25%. All the specimens are cured for 7, 14 and 28 days and tested for compression, split tensile and flexure. The test results reveal that the strengths are gradually increasing for 5, 10 and 15% replacement of GGBS by Metakaolin and give the highest value for 20% in all the tests. It also shows further increased replacements reduces the test values. It proves that geopolymer concrete performs well in strength properties with GGBS and Metakaolin.


2020 ◽  
Vol 3 (4) ◽  
pp. 1133-1139
Author(s):  
S. Karthiga ◽  
C. H. Renuka Devi ◽  
N. G. Ramasamy ◽  
C. Pavithra ◽  
J. S. Sudarsan ◽  
...  

Kilat ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 101-107
Author(s):  
Muhammad Sofyan

Mortar salah satu material yang memiliki manfaat yang beraneka ragam dalam konstruksi bangunan.  Sejauh ini, mortar konvensional digunakan sebagai bahan plester atau coating pada bangunan. Bahan pengikat utama mortar pada dasarnya masih mengandalkan semen. Pemanfaatan Batu bara pada pembangkit listrik tenaga uap masih menjadi salah satu arus utama sebagai pendukung kebutuhan energi listrik. Penumpukan hasil sisa pembakaran batu bara seperti fly ash dan bottom ash berpotensi mengganggu stabilitas Ekosistem lingkungan. Alkali-Activated mortar dengan mengandalkan larutan alkali activator yang direaksikan dengan material pozzolanic seperti fly ash, Ground Granulated Blast Furnace Slag (GGBFS), Palm Oil Fuel Ash (POFA)ldan lain-lain dapat menjadi salah satu solusi dalam mengurangi limbah fly-ash yang menumpuk. Dalam beberapa riset riset terdahulu idealnya kontrol mutu dari Alkali Activated mortar dapat ditinjiau pada kekuatan mekanisnya seperti kuat tekan dan lentur Dalam artikel ini akan ditinjau bagaimana kekuatan mekanis pada beberapa jenis Alkali-Activated Mortar. Dari studi-studi yang akan dibahas tersebut akan ditarik sebuah kesimpulan berdasarkan data-data pengujian mekanis yan pada akhirnya dapat memberi rekomendasi tentang bagaimana performa mekanis pada Alkali-Activated mortar.


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