Compressive Strength-Maturity Relationships of Mortar Containing Fly Ash.
Abstract
The relationships between the compressive strength and maturity of four mortar mixtures containing fly ash were evaluated. The majority of the mortar was determined using both the traditional maturity method proposed by Saul and the maturity-age procedure proposed by Freisleben-Hansen and Pedersen. Two mortar mixtures had a twenty five percent of the cement by absolute volume replaced with Class F fly ash, and two mixtures had 35 percent by the cement of absolute volume replaced with Class F fly ash. Twenty-four compressive strength specimens and three temperature monitoring specimens were fabricated from each batch and cured at the temperature of interest. The curing temperatures investigated included 40 to 80 F. The temperature-age history of the specimens was monitored continuously and compressive strength tests were conducted at various ages up to 28 days. Both the classical maturity method proposed by Saul and the maturity-age procedure proposed by Freisleben-Hansen and Pedersen estimated the compressive strength of the test specimens with a degree of success. The maturity-age procedure resulted in less scatter about the regression lines than the classical method for mortar cured at 85 F and 40-80 F. Less scatter of the classical maturity data was noted for mortar cured at 40 F.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1984
- Accession Number
- ADA148705
Entities
People
- S. A. Ragan