ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Compressive Strengths of Lean Concretes Containing Fly Ash

by David Whiting, Construction Technology Lab Inc, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

The compressive strength development of lean concretes containing fly ash was evaluated. Concretes were prepared at total cementitious materials contents of 423, 517, and 564 lb/yd³ (251, 307, and 335 kg/m³). Six fly ashes were chosen for evaluation at cement replacement levels of 25 and 50% by mass in each of the mixtures. Specimens representative of residential flat work were prepared and cured for one and seven days under moist conditions, then air-dried until testing at ages from one day through 365 days. Results indicate that using mixture proportions and curing regimens typical of residential construction practice, fly ash concrete mixtures will, in general, result in slower strength gain and lower ultimate strength than corresponding mixtures prepared without fly ash. At high ash levels (50%) it may not be possible to meet current ACI requirements on minimum strength for residential concrete construction.

Subject Headings: Compressive strength | Strength of materials | Fly ash | Residential construction | Tensile strength | Concrete | Mixtures

Services: Buy this book/Buy this article

 

Return to search