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A platform for research: civil engineering, architecture and urbanism
Flame retardant modified asphalt, flame retardant asphalt concrete and preparation method thereof, and application of slaked lime as flame retardant
The invention discloses flame retardant modified asphalt. The mass of added slaked lime is 25% to 80% of the mass of original unmodified asphalt. The invention also discloses a flame retardant asphalt concrete, which comprises the following raw materials by mass percent: 86% to 93% of aggregates, 3% to 6% of asphalt, 0.6% to 4.8% of slaked lime, and 3 % to 7% of limestone dust. The invention also discloses a preparation method of the flame retardant asphalt concrete. The preparation method comprises the following steps: heating the asphalt to 140 to 170 DEG C, and then adding the asphalt to 180 to 200 DEG C aggregates to be mixed for 85 to 95 seconds; simultaneously adding slaked lime and limestone dust to be mixed again for 85 to 95 seconds, and then molding to obtain the flame retardant asphalt concrete. The invention also discloses application of slaked lime as an asphalt flame retardant. When the slaked slime is used as the flame retardant of the flame retardant modified asphalt and the asphalt concrete, the oxygen index of the asphalt can be enhanced, the time to ignition of the asphalt is prolonged, and the combustion heat release rate and the CO release rate of the asphalt are reduced; the high and low temperature performance and the water stability of the asphalt concrete are improved, and the application value is good.
Flame retardant modified asphalt, flame retardant asphalt concrete and preparation method thereof, and application of slaked lime as flame retardant
The invention discloses flame retardant modified asphalt. The mass of added slaked lime is 25% to 80% of the mass of original unmodified asphalt. The invention also discloses a flame retardant asphalt concrete, which comprises the following raw materials by mass percent: 86% to 93% of aggregates, 3% to 6% of asphalt, 0.6% to 4.8% of slaked lime, and 3 % to 7% of limestone dust. The invention also discloses a preparation method of the flame retardant asphalt concrete. The preparation method comprises the following steps: heating the asphalt to 140 to 170 DEG C, and then adding the asphalt to 180 to 200 DEG C aggregates to be mixed for 85 to 95 seconds; simultaneously adding slaked lime and limestone dust to be mixed again for 85 to 95 seconds, and then molding to obtain the flame retardant asphalt concrete. The invention also discloses application of slaked lime as an asphalt flame retardant. When the slaked slime is used as the flame retardant of the flame retardant modified asphalt and the asphalt concrete, the oxygen index of the asphalt can be enhanced, the time to ignition of the asphalt is prolonged, and the combustion heat release rate and the CO release rate of the asphalt are reduced; the high and low temperature performance and the water stability of the asphalt concrete are improved, and the application value is good.
Flame retardant modified asphalt, flame retardant asphalt concrete and preparation method thereof, and application of slaked lime as flame retardant
WU KE (author) / ZHU KAI (author) / KANG CHENG (author) / HUANG ZHIYI (author)
2015-05-20
Patent
Electronic Resource
English
IPC:
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
/
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
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