Delhi sand

The soil columns were 10 cm long and 5 cm in diameter. Special care was taken in packing the columns to avoid radial and longitudinal particle-size segregation (17). Fluid volumes in the columns averaged 73 cm for Oakley sand and 81 cm for Delhi sand. 

The soils employed in this study were Delhi (11) and Oakley (12) sands, in which most of the clay appears to be present as coatings on the sand particles. Characteristics of each soil are shown in Table I. Oakley sand is quite acidic. This can be explained (13, p. 282-289) by the substantial aluminum component of the exchangeable cations. 

University of Petroleum and Minerals, Saudi Arabia), Prof. Gaber Eldesoky and Prof Zeid-AL-Othman (King Sand University, Saudi Arabia), Prof Sheikh Raisuddin (Jamia Hamdard University, New Delhi, India), Byong-Hun Jeon (Yonsei University, South Korea), and Prof A.I. Yahya (Nizwa University, Oman) for their valuable suggestions, guidance, and constant inspiration. 

Pavlenko, S.I., and Oreshkin, A.B. (1992) Structure formation of cementless concrete made with slag sand and high-calcimn ash from thermal power plants, in Proceedings 9th ICCC, New Delhi, Vol. 5, pp. 647-652. 

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