Thesis
Investigation into possible methods to screen for chemical degradation of pervious concrete due to common deicers
Washington State University
Master of Science (MS), Washington State University
2017
Handle:
https://hdl.handle.net/2376/101163
Abstract
Pervious concrete pavement is a highly permeable form of concrete which allows storm water runoff to permeate through the surface layer to an underground aggregate storage bed and possibly into the soil beneath. It can act as a surface runoff filtration system and can reduce ponding. The latter benefit makes it particularly attractive in regions with cold climates as reduced ponding reduces ice formation (reducing accidents due to ice formation on roads). However, there is evidence that deicing/anti-icing chemicals may have adverse effects on pervious concrete. Some typically used deicing agents are magnesium chloride (MgCl2), calcium chloride (CaCl2), and sodium chloride (NaCl) since they are efficient and cost effective. It has been hypothesized by many other researchers that pervious concrete might be most sensitive to MgCl2 and CaCl2. The focus of this research was to investigate a testing method(s) that might be used to observe the durability of different concrete mix designs and the role carbonation may play in altering the degradation resistance after application of deicing and anti-icing chemicals, with a focus on calcium chloride. If different mix designs are more resistant to the effects of deicer chemicals, then using these mixes could make pervious concrete more feasible in regions where those deicing agents are applied heavily. A test method was developed that might be used to determine if certain mixes or treatments might make pervious concrete more resistant to calcium chloride applications. This proposed method requires minimal equipment and expertise, can be performed at room temperature, takes under six months and the results can be observed by visual inspection. Further research is needed to develop a testing method for improved resistance to MgCl2.
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Details
- Title
- Investigation into possible methods to screen for chemical degradation of pervious concrete due to common deicers
- Creators
- Trace William Sendele
- Contributors
- Liv Haselback (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Identifiers
- 99900525394801842
- Language
- English
- Resource Type
- Thesis