Table 3 Fly ash technical indicators.

From: Durability and damage evolution of cement-fly ash stabilized aeolian sand gravel under high-temperature curing and freeze–thaw cycles

Number

Test items

Specified value

Measured value

1

0.075 Sieve passing rate /%

 ≥ 70

79

2

Water demand ratio /%

 ≤ 105

86

3

Loss on ignition /%

 ≤ 20

3.0

4

Specific surface area /cm2/g-1

 > 2500

3012

5

SiO2、Al2O3、Fe2O3 /%

 > 70.0

78.6

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