scholarly journals Strengthening and shape modification of fire-damaged concrete with expansive cement concrete and CFRP wrap

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0 ◽  
Author(s):  
M. Hosseinpour ◽  
M. Celikag ◽  
H. Akbarzadehbengar
Keyword(s):  
Cement Concrete ◽  
Shape Modification ◽  
Expansive Cement

Expansive concrete drilled shafts

1985 ◽  
Vol 12 (2) ◽  
pp. 382-395 ◽  
Author(s):  
Shamim A. Sheikh ◽  
Michael W. O'Neill ◽  
M. A. Mehrazarin
Keyword(s):  
Load Transfer ◽  
Stress Path ◽  
Drilled Shafts ◽  
Drilled Shaft ◽  
Cement Concrete ◽  
Bored Pile ◽  
Expansive Concrete ◽  
Stiff Clay ◽  
Expansive Cement

A hypothesis is presented in this paper that states that expansive cement concrete produces a stronger bond between the concrete in a drilled shaft (bored pile) and the surrounding soil than does normal cement; this results in an increase in the frictional component of capacity and a reduction in the settlement of the shaft at working load levels.Four types of expansive cement, type "K" cement (the expansive cement available commercially) and three made from commercially available materials, were tested for their expansion characteristics; two of them were selected to be used in two instrumented drilled shafts in stiff clay. Normal (type 1) cement was used in a third shaft to serve as a reference. The three shafts were tested to failure after essentially all the expansion was deemed to have taken place in the two expansive concrete shafts. Lateral and longitudinal expansion of the shafts were monitored during the curing period. Load–settlement behaviour and load transfer between shafts and soil during the tests were studied.The test results permitted the preliminary conclusion that expansive cement concrete can increase the frictional capacity of drilled shafts in stiff clay by as much as 50% and reduce the settlement by about 50%. The results are valid for short-term behaviour of drilled shafts made of expansive cement. The long-term behaviour of such shafts remains to be studied. Key words: base bearing capacity, bored pile, cement (expansive), concrete (structural), drilled shaft, ettringite, expansion, frictional capacity, settlement, stress path.

scholarly journals STUDIES ON EXPANSIVE CEMENT CONCRETE PAVEMENTS

1972 ◽  
Vol 1972 (206) ◽  
pp. 147-160
Author(s):  
Shigeyoshi Nagataki ◽  
Koichi Yoneyama
Keyword(s):  
Concrete Pavements ◽  
Cement Concrete ◽  
Expansive Cement

Steel-Encased Expansive Cement Concrete Column

1970 ◽  
Vol 96 (11) ◽  
pp. 2267-2282
Author(s):  
Vitelmo V. Bertero ◽  
Saad E. Moustafa
Keyword(s):  
Concrete Column ◽  
Cement Concrete ◽  
Expansive Cement
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