Cold Weather Concrete a Durability Study
Start Date/Time:
Wednesday, June 20, 2018 2:00 PM (UTC-05:00) Eastern Time (US & Canada)
Recurring Event:
One time event
Importance:
Normal Priority
Category:
Military Engineering
Location:
Gunars Abele Auditorium
Description:

TITLE: Cold Weather Concrete: A Durability Study

PRESENTER: Danielle Kennedy, research civil engineer, U.S. Corps of Engineers R&D Center - CRREL

ABSTRACT: Cold weather concrete, also known as "anti-freeze" concrete was developed and studied at CRREL more than thirty years ago. This technology incorporates a suite of chemical admixtures, which depress the freezing point and allow concrete to be poured at sub-freezing temperatures and cured without an external heat source. Extensive laboratory testing was completed on cold weather concrete before its official placement in the field to prove that it could sustain realistic weather conditions. More than twelve field sites are now in service across the country. The purpose of this project is to validate the long term durability of cold weather concrete and prove that it is able to compete with control concrete poured in cold regions. The investigation of cold weather concrete in the field includes a visual inspection as well as collecting ground penetrating radar, pulse and surface velocity, and light weight deflectometer data on site, in addition to collecting core samples and running laboratory testing. Laboratory testing will determine the concentration of the concrete pore water and analyze the remaining chemical composition. This collection of testing is able to show that cold weather concrete remains resilient over time, and investigates the factors that enable this. This technology is a breakthrough for cold regions and allows for concrete construction to continue during cold seasons and remain as durable as control concrete poured in a heated setting or warm environment.

PRESENTATION

Owned by Bryan Armbrust On Friday, June 29, 2018