• 1.png
  • 2.png
  • 3.jpg
  • 4.jpg
  • 5.png
  • 6a.png
  • 7.png
  • 8.png
  • 9.png
  • 10.png
  • 11.png
  • 12.JPG
  • 13.png
  • 14.png
  • 15.png

Welcome to Chris Bennett's and Lis Pedersen's web site. If you are looking for information Chris' current work on affordable housing, please visit www.mygbhousing.info. The video below tells the background to Chris' project.


2009 - USA - Dust Control Best Practices


2009 - USA - Dust Control Best Practices

This study evaluated the performance and cost of commonly used dust palliatives using a mobile air sampling technique. Treatments of calcium chloride, magnesium chloride, and organic polymer-plus-binder were evaluated at standard application rates during the first year and at variable rates during the second year. The treatments were applied to a variety of subject roads that were located throughout Minnesota. Average daily traffic levels varied from 25 to 700 vehicles per day.

The overall data trend showed that treatments reduced dust levels and measurements showed that aggregate surface
moisture content was the best predictor of dust control efficiency. Positive relationships were measured between
dust control efficiency and other variables in the study, generally reinforcing the concept that higher application
rates may be more successful on gravels containing greater amounts of material passing the #200 sieve. A negative
relationship was measured between dust control efficiency and sand equivalency, showing that treatments on gravels containing more sand material were less effective. In addition to dust control, study participants observed a secondary benefit of surface stabilization, which lasted for a period of time. Treated sections that developed surface stabilization were able to reduce maintenance activities to intersection areas only.

File Name: 2009_usa_best_practices_dust_control_aggregate_roads.pdf
File Size: 290.79 KB
File Type: application/pdf
Hits: 744 Hits
Download: 1846 times
Created Date: 25-06-2019
Last Updated Date: 21-03-2018


Chris in the NCT Race 

Chris has an adventurous spirit which generally involves cycling, running, or just being out there having a good time. Read his 'Race Reports' below. This is a link to his SPOT GPS tracker. If you are interested in his 'geeky' sport technical blog it is at www.tri-duffer.com. He also has stories of his life as 'An Overtravelled Engineer Working for the World Bank' at World Bank Traveller.


Race Reports


Document Library


  • Chris' published papers and reports are here.
  • His Technical Library  has a range of reports 
  • Golden Bay community projects are here.
  • The history of the ROMDAS company is here.
  • The 'Road to Good Health' HIV/AIDs Toolkit is here.


Technical Library

Chris and Lis

Chris and Lis

We are Lis Pedersen and Chris Bennett. We’ve been married over 30 years and each found our way to New Zealand in the early 1980s from Denmark and Canada respectively. Golden Bay has been our happy place for almost 20 years and we are now based in Pohara just above the beach, with our two cats Coco and Max. 




Read More