Evaluation of Current ASTM Standards for ASR Prevention When Fine Lightweight Aggregates Are Used

2021 ◽  
Vol 10 (1) ◽  
pp. 20200076
Author(s):  
Chang Li ◽  
Jason H. Ideker ◽  
Michael D. A. Thomas
Keyword(s):  
Lightweight Aggregates

VALORIZATION OF AGRO-INDUSTRIAL WASTES IN LIGHTWEIGHT AGGREGATES FOR AGRONOMIC USE: PRELIMINARY STUDY

2017 ◽  
Vol 16 (8) ◽  
pp. 1691-1699 ◽  
Author(s):  
Romina D. Farias ◽  
Carmen Martinez Garcia ◽  
Teresa Cotes Palomino ◽  
Fernanda Andreola ◽  
Isabella Lancellotti ◽  
...  
Keyword(s):  
Industrial Wastes ◽  
Lightweight Aggregates ◽  
Preliminary Study

Properties of Artificial Lightweight Aggregates (ALAs) Made of Dredged Soil Mixed with Waste Catalyst Slag

2012 ◽  
Vol 174-177 ◽  
pp. 1079-1085 ◽  
Author(s):  
Si Nae Jo ◽  
Yoo Tack Kim ◽  
Seung Gu Kang ◽  
Chang Sam Kim
Keyword(s):  
Specific Gravity ◽  
Water Absorption ◽  
Lightweight Concrete ◽  
Sintering Temperature ◽  
Thermal Power ◽  
Lightweight Aggregates ◽  
Dredged Soil ◽  
Porous Carriers ◽  
Black Core ◽  
Sintering Method

The artificial lightweight aggregates (ALAs) were manufactured using dredged soil produced at thermal power plant and waste catalyst slag by direct sintering method at 1050~1250°C for 10min. The ALAs of 100% dredged soil showed the black core phenomenon even at the low sintering temperature as 1050°C and become lightened by bloating pores in black core area with sintering temperature. On the other hand, the aggregates with 100% waste catalyst slag did not showed black coring and bloating phenomenon and had the low forming ability and many cracks inside. Adding the dredged soil to the waste catalyst slag decrease the specific gravity by promoting the black coring and bloating inside. The water absorption(%) of ALAs decreased with sintering temperature. The ALAs fabricated in this study showed the specific gravity of 0.8~2.0 and water absorption of 2~16% so it could be applied to various fields such as the lightweight concrete or the field of the porous carriers for purification of a contaminated soil or water.

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