Trial #0
To find an effective cleaner to remove asphalt staining, oil, grease, and adhered gravel from stainless steel coupons.
Four cleaners were chosen for testing; 1. Orange terpenes 15%, 2. Soyclear 1500 100%, 3. DS-108 Wipe Solvent 100%, 4. Lemon Oil 15%. Three stainless steel coupons were assigned to each cleaner for a total of twelve coupons. Initial weights of the coupons were recorded. About a tablespoon of EZ Street Premium Cold Asphalt was placed on each coupon. The coupons were then placed between two steel plates. A car was driven over the steel plates five times in order to compress the asphalt to the coupons, releasing the oil and grease and causing gravel to become adhered to the coupons. The dirty weights of the coupons were then recorded. The coupons were then subjected to unheated immersion within their corresponding cleaner for 30 minutes with a stir bar set to 200rpm. Once removed, each coupon was wiped once with a paper towel to remove the dissolved soil. Clean weights of the coupons were then recorded.
| Cleaner
|
Initial wt of cont.
|
Final wt of cont.
|
%Cont Removed
|
% AVG
|
| Orange Terpenes 15%
|
0.5287
|
0.0028
|
99.47
|
99.60
|
| 2.5633
|
0.0040
|
99.84
|
| 1.2285
|
0.0064
|
99.48
|
| Soyclear 1500 100%
|
0.6742
|
0.0030
|
99.56
|
99.51
|
| 0.5646
|
0.0022
|
99.61
|
| 1.1966
|
0.0077
|
99.36
|
| DS 108 Wipe Solvent 100%
|
0.7251
|
0.0018
|
99.75
|
99.52
|
| 0.1704
|
0.0005
|
99.71
|
| 0.3725
|
0.0034
|
99.09
|
| Lemon Oil 15%
|
1.9981
|
0.0015
|
99.92
|
99.41
|
| 0.6714
|
0.0054
|
99.20
|
| 0.3284
|
0.0029
|
99.12
|
After being wiped with a paper towel, the coupons cleaned with Orange Terpenes 15% had small spots of staining left over.
The Lemon Oil 15% left streaks on the coupons after being wiped with a paper towel.
Soyclear 1500 100% and DS 108 Wipe Solvent 100% are effective cleaners in removing asphalt from stainless steel. They passed both gravimetric testing parameters and visual requirements. Future testing will include a reduction of time and a reduction in product concentration.
No relation