Trial #3 / Project #2 / Pierce County Public Works & Utility Road Maintenance / Clients / Media

Name

Trial #3

Purpose

To find an effective alternative cleaner to remove asphalt, tar, and staining from road maintenance tools and work truck beds.

Year

2023

Book Number

32

Rating

2

Special

Start Page

0

End Page

0

Part Type

Coupon

Date Run

01/07/2024

Time

0.00

Equipment

Immersion/Soak

Experimenters

Serena Burkinshaw
Siddhant Trivedi

Substrates

Contaminants

Rising Conditions

Drying Methods

Analysis Methods

Experimental Procedure

Three pre-weighed stainless steel coupons were assigned to each cleaner. A tablespoon of EZ Street Premium Cold Asphalt was placed on each coupon before sandwiching the contaminated coupon between two steel plates. A mid-size compact car (curb weight: 3,186lbs-3,559lbs) rolled over the steel plates five times in a forward motion to compress the asphalt to the coupons which released the oil and grease to allow the gravel to adhere to the substrate. Dirty weights of the coupons were recorded before testing the cleaners using unheated immersion for 20 minutes with a stir bar set to 200rpm. Once removed, each coupon was wiped with a paper towel to remove the dissolved soil and assess efficacy visually before taking final weights.

Results

Cleaner	Initial wt of cont.	Final wt of cont.	%Cont Removed	% AVG
Pave Pro Green	0.8598	0.0174	97.98	94.66
	0.1308	0.0169	87.08
	1.4297	0.0154	98.92
Pave Pro Gold	0.9355	0.0139	98.51	98.83
	1.4056	0.0161	98.85
	1.5561	0.0139	99.11

Conclusion

Both PavePro Green and PavePro Gold are highly effective in removing asphalt from stainless steel substrates.

Source Testing Plan

No relation

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Trial #3