Performance of alkali-activated fly ash incorporated with GGBFS and micro-silica in the interfacial transition zone, microstructure, flowability, mechanical properties and drying shrinkage

Tajunnisa, Yuyun; Sugimoto, Masaaki; Uchinuno, Takahiro; Sato, Takahiro; Toda, Yoshinori; Hamasaki, Arisa; Yoshinaga, Toru; Shida, Kenji; Shigeishi, Mitsuhiro

doi:10.1063/1.5003517

Cited by 11 publications

(18 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The methodology used in this work is laboratory experiments, cube-mortars of 50 x 50 x 50 mm were used as specimens for compressive strength tests. Mix design of alkali-activated mortar refers to previous work [13][14][15][16]. The proportion of mixtures can be seen in Fig 1.…”

Section: Fig 1 Mixture Proportion Of Alkali-activated Mortarmentioning

confidence: 99%

“…A prior study [13], the alkali-activated mortar was successfully developed by utilizing fly ash type F, Ground-granulated Blast Furnace Slag (GGBFS), and micro-silica. A preliminary experiment was also studied the setting time of class F fly ash paste from a power plant in Kyushu-Japan was relatively long, about 7 days [13]. The addition of GGBFS as fly ash replacement on their mixtures have shortened and normalized time set.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization Alkali-Activated Mortar Made From Fly Ash and Sandblasting

Tajunnisa¹,

Bayuaji²,

Husin³

et al. 2019

GEOMATE

Self Cite

View full text Add to dashboard Cite

This research is to find out the contribution of waste energy utilization in Indonesia as a binding agent of alkali-activated mortar. In a previous study, researchers investigated mortar made from class F fly ash/GGBFS/micro-silica in Japan. The inclusion of GGBFS is to shorten/normalize the setting time and microsilica is to improve mortar performance. This research is then continued by using abundant waste material in Indonesia, namely class C fly ash, by making cubic mortar specimens. Setting time of class C fly ash paste from Indonesia is very fast, in contrast to that of class F fly ash paste from Japan. Sandblasting as abundant waste material in Indonesia is substituted to class C fly ash to lengthen the setting time of paste and to improve standard deviation of a compressive test of mortar specimens. On the other hand, the addition of sandblasting waste has a negative effect, because it reduces a compressive strength of mortar specimens.

show abstract

Section: Fig 1 Mixture Proportion Of Alkali-activated Mortarmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterization Alkali-Activated Mortar Made From Fly Ash and Sandblasting

Tajunnisa¹,

Bayuaji²,

Husin³

et al. 2019

GEOMATE

Self Cite

View full text Add to dashboard Cite

show abstract

“…AAM mortars are mixtures made from precursor materials (fly ash/GGBFS/micro-silica), mixed with a fixed alkaline solution (Na2SiO3+NaOH), and standardized sand. All of these materials are then compacted, demolded, cured as previous papers [10][11][12][13]. Fixed alkali solution ratio of Na2SiO3 to 8 M NaOH of 1.5 is used.…”

Section: Materials and Mixture Compositionsmentioning

confidence: 99%

“…In previous work [10][11], the researcher investigated the utilization of low calcium fly ash for alkali-activated (geopolymer) matrices. Researchers developed low calcium fly ash, ground granulated blast furnace slag (GGBFS), and microsilica as binding materials for alkali-activated mortar [12][13]. There has been no paper discussing the reliability of strength of alkali-activated (geopolymer) mortars by using Acoustic Emission.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reliability of Alkali-Activated and Portland Cement Mortar Under Compressive Test by Acoustic Emission

Tajunnisa¹

2019

GEOMATE

Self Cite

View full text Add to dashboard Cite

Alkali-activated materials or geopolymer technology is one of the material innovations that can provide several benefits by reducing the use of Portland cement. The source of precursor materials come from industrial by-products. This study investigated the reliability failure of seven-variation of alkali-activated fly ash/slag/micro-silica mortar (AAM) and one-type of Portland Cement (PC) mortar. Compressive strength test accompanied by acoustic emission is used to characterize cylindrical mortar specimens. Examination of fracture distribution according to stress level until final failure was then performed. The compressive strength of four-type of alkali-activated mortar AAM (

show abstract