scholarly journals ANALYSIS OF APPLICABILITY OF SIMPLIFIED ESTIMATION METHOD OF EXPANSIVE CEMENT CONCRETE USING CYLINDRICAL LIGHT-WEIGHT STEEL MOLD BASED ON MECHANICAL WORK

2011 ◽  
Vol 65 (1) ◽  
pp. 209-216 ◽  
Author(s):  
Kenichiro NAKARAI ◽  
Yusuke KURIHARA ◽  
Hiroshi HASHIDA ◽  
Masato TSUJINO
Keyword(s):  
Estimation Method ◽  
Mechanical Work ◽  
Light Weight ◽  
Cement Concrete ◽  
Steel Mold ◽  
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

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

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

Research on the Deformation Characteristic of EPS Silt Light-Weight Soil

2014 ◽  
Vol 953-954 ◽  
pp. 1614-1617
Author(s):  
Yong Feng ◽  
Yu Bin Pei
Keyword(s):  
Fractal Theory ◽  
Deformation Characteristic ◽  
Estimation Method ◽  
Processing Technique ◽  
Test Method ◽  
Image Processing Technique ◽  
Light Weight ◽  
Soil Microstructure ◽  
Deformation Parameters

EPS silt light-weight soil is a good artificial earthfill material made by EPS foaming materials and silt. At present,the microstructure character of this light-weight soil is rarely understood,besides, it is very difficult to hold the reasonable deformation parameters, therefore, study on the microstructure mechanism and deformation parameters of EPS silt light-weight soil is very important. Based on the image processing technique and fractal theory, the quantitative parameters and the transformation features under the loading process of the EPS silt light-weight soil microstructure can be researched by XRD and SEM tests. According to the indoor and insitu tests, the effect of EPS grain deformation, soilcement strength, test method and the stress level on the deformation characteristic is to be studied by analysing microstructure transformation. Based on the test results and related theory analysis, the relationship between the microstructure character and macroscopical deformation quality of EPS silt light-weight soil will be synthetically approached, the reasonable estimation method of deformation parameters will be discussed, the related research results above will give a favorable theoretical sustentation for the application and expansion of this environmental protection technique.

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