A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Moisture performance through fresh concrete at different environmental conditions
The evaporation of water from fresh concrete exposed to different environmental conditions was investigated theoretically. Meteorological data for three cities, Alexandria (31 degree N), Cairo (30 degree N), and Aswan (24 degree N), were considered as the input data. A computer program was developed to calculate the solar radiation, evaporation rate, heat and mass transfer numbers, and moisture transfer during the four seasons. The results show that the evaporation rate and Gukhman number increased as the latitude decreased. The results also show that a greater part of the mixing water evaporated during the first drying period, and that water must be prevented from escaping and replaced by water from outside to complete the hydration process of cement. The curing method depends on the location and season and is necessary as one moved from the north to the south in Egypt. The results demonstrated that Gukhman number plays a significant role in choosing the curing method of fresh concrete exposed to external climatic conditions. Also, the four curing methods investigated were dependent on the values of Gukhman number.
Moisture performance through fresh concrete at different environmental conditions
The evaporation of water from fresh concrete exposed to different environmental conditions was investigated theoretically. Meteorological data for three cities, Alexandria (31 degree N), Cairo (30 degree N), and Aswan (24 degree N), were considered as the input data. A computer program was developed to calculate the solar radiation, evaporation rate, heat and mass transfer numbers, and moisture transfer during the four seasons. The results show that the evaporation rate and Gukhman number increased as the latitude decreased. The results also show that a greater part of the mixing water evaporated during the first drying period, and that water must be prevented from escaping and replaced by water from outside to complete the hydration process of cement. The curing method depends on the location and season and is necessary as one moved from the north to the south in Egypt. The results demonstrated that Gukhman number plays a significant role in choosing the curing method of fresh concrete exposed to external climatic conditions. Also, the four curing methods investigated were dependent on the values of Gukhman number.
Moisture performance through fresh concrete at different environmental conditions
Abd El-Razek, M.M. (author) / Abo-El-Enein, S.A. (author)
Cement and Concrete Research ; 29 ; 1819-1825
1999
7 Seiten, 16 Quellen
Article (Journal)
English
Moisture performance through fresh concrete at different environmental conditions
| Online Contents | 1999
Moisture performance through fresh concrete at different environmental conditions - Moisture loss
| British Library Online Contents | 1999
Moisture measurement techniques for fresh concrete
| Tema Archive | 1992
Flow conditions of fresh mortar and concrete in different pipes
| Online Contents | 2009