Details:

Creators:
Gayne, Doug ; Peabody, Dale
Gayne, Doug ; Peabody, Dale Less -
Corporate Creators:
Maine. Dept. of Transportation. Transportation Research Division
Subject/TRT Terms:
[+]
Additives Concrete Bridges Durability Experiments Field Tests Laboratory Tests Silicates Waterproofing Materials
Publication/ Report Number:
15-11
Resource Type:
Tech Report
Geographical Coverage:
Maine
Corporate Publisher:
Maine. Dept. of Transportation
Abstract:
In 2012 the Maine Department of Transportation reconstructed the Stockton Springs Underpass Bridge

#5760 on Church Street over US Route 1. The primary Contractor for this project was the Lane

Construction Corporation of Cheshire, Connecticut.

The bridge consists of structural steel girders with a reinforced concrete deck system. Because of the steep

profile grade an integral concrete wearing surface was used instead of the typical waterproofing

membrane with hot mix asphalt pavement surface.

MaineDOT generally uses black bar as reinforcing steel in bridge decks. An opportunity arose on this

project to supplement the concrete mix with a waterproofing additive in hope of providing a more durable

and impermeable concrete deck.

On this project, the MaineDOT used an alkaline earth silicate cement admixture as an experimental

feature to waterproof the concrete. Unlike many other concrete waterproofing solutions, XYPEX ADMIX

C-500 is added to the concrete mix at the time of batching, so it becomes integral to the finished product

and permanent. The active chemicals in XYPEX react with the moisture in fresh concrete and the by-products of cement hydration to generate a non-soluble crystalline formation throughout the pores and

capillary tracts of the concrete, thereby reducing the concrete permeability which in turn increases

durability.

This report covers the experimental usage of the Xypex additive, including lab test results and analysis

and field observations during construction and subsequent inspections.


Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:01968c35db47f418fbf08261e3deedc4088b9ed072afb876fcacbe90d011b5e4
Download URL:
https://rosap.ntl.bts.gov/view/dot/29672/dot_29672_DS1.pdf
File Type:

Supporting Files

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