Trial #1 / Project #2 / Pierce County Public Works & Utility Road Maintenance / Clients / Media

Name

Trial #1

Purpose

To find an effective cleaner to remove asphalt staining, oil, grease, and adhered gravel from stainless steel coupons.

Year

2023

Book Number

31

Rating

2

Special

Start Page

0

End Page

0

Part Type

Coupon

Date Run

08/27/2023

Time

0.00

Equipment

Experimenters

Substrates

Contaminants

Rising Conditions

Drying Methods

Analysis Methods

Experimental Procedure

Two were chosen for testing; 1. Soyclear 1500 100%, and 2. DS-108 Wipe Solvent 100%. Three stainless steel coupons were assigned to each cleaner for a total of six 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 20 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.

Results

Cleaner	Initial wt of cont.	Final wt of cont.	%Cont Removed	% AVG
Soyclear 1500 100%	2.0855	0.0028	99.87	99.43
	1.4404	0.0041	99.72
	0.3229	0.0042	98.70
DS-108 Wipe Solvent 100%	0.5635	0.0005	99.91	99.74
	0.7907	0.0048	99.39
	0.6991	0.0005	99.93

Conclusion

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.

Source Testing Plan

No relation

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Trial #1