Author: Robert A. TromanPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 112
Book Description
An Experimental Study of Effects of Varying Water Temperatures on Lumnite Concrete
Author: Robert A. TromanPublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 112
Book Description
An Experimental Study of the Effect of Temperature, Pressure and Water Cement Ratio Upon Time of Initial Set and Compressive Strength of Neat Portland Cement
Author: Thomas Joseph JohnsonPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 98
Book Description
Proceedings
Author: American Concrete InstitutePublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 816
Book Description
Journal of American Concrete Institute
Author: American Concrete InstitutePublisher:
ISBN:
Category : Concrete
Languages : en
Pages : 810
Book Description
Each number includes "Synopsis of recent articles."
An Experimental Investigation of the Effect of Low Temperatures Upon the Curing of Concrete
Author: T. B. AppelAn Experimental Investigation of the Effect of Immersion for Stated Periods in Warm Water Upon the Crushing Strength of Concrete which Has Set in Water at a Temperature Just Above the Freezing Point
Author: Dwight F. JohnsProceedings of the ... Annual Convention Held at ...
Author: American Concrete Institute. Annual ConventionPublisher:
ISBN:
Category : Cement
Languages : en
Pages : 810
Book Description
Public Roads
Author: Experimental Study on Temperature Response in Damaged Concrete under Atmospheric Environment
Author: Effect of Elevated Curing Temperature on the Chloride Permeability of High-Strength Lightweight Concrete
Author: OE. GjørvPublisher:
ISBN:
Category : Chloride permeability
Languages : en
Pages : 6
Book Description
Due to high cement contents and reduced heat capacity, high-strength lightweight concrete is often exposed to elevated curing temperatures. In the production of lightweight concrete the aggregate is often wetted before use, but sometimes dry aggregate is also applied. In order to find out whether elevated curing temperatures in combination with varying moisture conditions of the aggregate would affect the concrete permeability, an experimental investigation was carried out. The results showed that maximum curing temperatures of up to 80°C did not adversely affect the compressive strength when dry aggregate was used, while a temperature above 50°C reduced the compressive strength when wet aggregate was employed. Temperatures above 65°C increased the permeability in both cases of aggregate moisture condition. At 20°C the compressive strength was higher for the wet aggregate concrete (103.8 MPa) compared to that of the dry aggregate concrete (95.3 MPa), but the permeability was also higher for the wet aggregate concrete (150%). When all the moisture was removed at 105°C, the wet aggregate concrete absorbed approximately 15% more water by capillary absorption than the dry aggregate concrete. Backscattered electron images showed a very dense transition zone between cement paste and aggregate both for the dry and the wet aggregate concrete.