Category

Theme images by Storman. Powered by Blogger.
Best viewed in Google Chrome

Kilns & Furnace related ...

Labels

Labels

Raw Materials related ...

Advertisement

Popular Posts

Services

Showing posts with label Slag Cement Project of the Year Awards. Show all posts
Showing posts with label Slag Cement Project of the Year Awards. Show all posts

Slag Cement Association (SCA) announces Slag Cement Project 2020 Awards | Cement Industry News

- No comments

 30-April-2021

First let us refresh our knowledge a little bit about Slag Cement and how it differs from Portland Cement.

Slag cement can be used in concrete, either as a separate cementitious component or as part of a portland cement concrete. Slag Cement works synergistically with portland cement to increase strength, reduce permeability, improve resistance to chemical attack and inhibit rebar corrosion. When used as part of a portland cement concrete, slag reacts with both the water (latent hydraulic reaction) and the hydrated cement paste (pozzolanic reaction), resulting in a more refined microstructure than that of a plain portland cement.  

However, there are some disadvantages of Blast Furnace Slag Cement Its initial strength is low, because of which it cannot be used in RCC works. As the initial setting time of Blast Furnace Slag Cement is high, this cement is not used for emergency or repair works as well.

The Slag Cement Association (SCA) is a nonprofit trade association representing producers and shippers of slag cement in the United States. Since 2010, been running its annual slag cement project of the year awards program. The slag cement awards recognize projects for excellence and innovation in concrete using slag cement.


SCA has recently announced the recipients of its 2020 Slag Cement Project of the Year Awards. Sixteen construction projects from across the United States were chosen to showcase the broad applications of slag cement and its impact on creating more durable and sustainable concrete.

In the architectural category, Lehigh Hanson used slag cement in the construction of a new four-story parking garage at the Chesapeake Beach Resort & Spa to allow an additional 700 vehicles to park on the resort’s premises. The other winning project in this category, slag cement was used for durability enhancement and potential sulfate and alkali silica reaction (ASR) mitigation by St. Marys Cement in the construction of Adventure Cove at the Columbus Zoo and Aquarium in Ohio.

Lehigh Hanson also won in the sustainability category for using slag cement in the construction of the 72-story One Manhattan Square residential building at the foot of the Manhattan Bridge in New York City.

The awards for innovative application has been given to LafargeHolicm for the replacement of a 323 m (1060-ft) superstructure above the historic Lake Tillery Bridge in the Piedmont area of North Carolina. Slag cement was used in the deck placements of the bridge to increase durability and to mitigate against alkali silica reaction (ASR) in the concrete. In addition, slag cement helped with holding the slump longer and increased the workability of the mixture to help the finishers battle the strong heat during the placements. Argos was also awarded for its work on the Nucor Steel of Florida project where slag cement helped exceed the specified compressive strength of 4000 pounds per square inch (psi) in 28 days in a 50 percent replacement mixture with 245 kg (540 lbs) of cementitious material and with a 0.49 maximum water-cementitious materials ratio (w/cm). Lasty, St. Mary’s Cement was recognized for the Pittsfield Charter Township Planning Commission Development, a large residential project which included apartments, rowhouses, mixed-use commercial buildings, and stormwater retention buildings. Up to 35 percent slag cement was used in the concrete mixture design for its workability, increased control of curing and hydration cycles, and long-term durability benefits.

The remaining SCA winners include:

Durability

High Performance

Green Design

Besides, there are two 2020 Slag Cement Research Award Winners:

  • Sustainability of Concrete in the Pacific Northwest—Hilary Chaimov, Oregon State University; and
  • Innovative Application of Slag in Improving Sustainability, Flexibility, and Cost in Thin Panels—Arash Rahmatian, University of Houston-Downtown

 (Source: Slag Cement Association News; edited)