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Volume Title: ICASGE2023

DOI: ICASGE-GEO

Tarek Mostafa Abdelaziz ; Tarek Mostafa Abdelaziz

Construction and Building Dept., College of Engineering and Technology, Arab Academy for Science & Technology and Maritime Transport, Alexandria, Egypt

The use of deep foundations is man’s oldest method of overcoming the difficulties of founding on soft soils, bored piles specifically are one of the most used methods of transferring loads to deeper, more competent soil layers. Experimental studies are mandatory to predict the behaviour of pile or piles, so that the interaction between piles and the embedding soil is governed by more sophisticated theoretical research. A proposed technique for increasing the capacity of bored piles is presented by means of using Expansive Type K cement in the concrete mix of bored piles. Type K cement, a shrinkage compensating cement, used in the concrete mix to increase the volume of the resulting concrete after hardening. In a previous study, experimental tests were conducted to show the increase in ultimate load capacity of bored piles embedded in sandy soil, which resulted in an increase in load capacity of piles ranging from (10.4% to 30.4%), explained to be due to the expansive concrete increase in volume laterally after hardening applied a force on encasing soil layers, which considerably increased the frictional resistance of piles encased in sand. Bored piles in general are more commonly stranded in weak soil strata, while applying the load to a deeper, stronger bearing soil layer. So, in this study, other experimental tests were conducted to investigate the effect of using expansive cement in the concrete mix of end-bearing bored piles resting on sand and surrounded by clayey soil while also studying the effect of many different parameters.

Expansive Cement; Type K Cement; Foundation; Bored Piles; concrete

Geotechnical Engineering (GEO)