Review of Scouring on Integral Bridge and its Possible Protection

The purpose of this paper is to summarize the following protection of scouring countermeasures by using Bentonite-Enhanced Sand (BES) mixtures. The concept of underground improvement is being used in this study to reduce the void of the sand. The sand bentonite mixture was used to bond the ground soil conditions surrounding the pile of integral bridge. The right composition of sand bentonite mixture was proposed based on previous findings. The swelling effect of bentonite also was investigated to ensure there is no adverse impact to the structure of the integral bridge. ScourScour, another name for severe erosion, occurs when the erosive capacity of water resulting from natural and manmade events exceeds the ability of earth materials to resist its effects. According to AASHTO LRFD Specifications (Section C3.7.5), scour is the most common reason for the collapse of highway bridges in the United States

Authors:

• Shatirah Akib
• Teuku K. Syamsura
• S.M. Shirazi
• Moatasem M. Fayyadh
• Budhi Primasari

Keywords:

• bentonite
• integral bridge
• possible protection
• scouring

References:

[1] A. Besqa, C. Malfoyb, A. Pantetb, P. Monneta, D. Righib (2003).
"Physicochemical characterisation and flow properties of some bentonite
muds". Applied Clay Science 23, 275- 286.
[2] Akib,S, M. Fayyadh, M, Othman, I., (2011). "Structural Behaviour of A
Skewed Integral Bridge Affected by Different Parameters." The Baltic
Journal of Road and Bridge Engineering, 6(2): 107-114.
[3] Tjokorda Gde Suwarsa Putra, I Wayan Redan, I Ketut Swijana (2006).
"The Influence of bentonite slurry Addition to excavation stability on
granular soil". Jurnal Ilmiah Teknik Sipil Vol.10, No.1.
[4] Wei Vu Pong ( 2006). Compaction of Sand-Bentonite Matrix Effect of
Time on Degree of Compaction. BSc Thesis. University Malaya.
[5] Akib, S. (2009). Effect of Scour on Integral Bridge Sub structures. PhD
Thesis. University Malaya.
[6] A. SRIDHARAN* and H. B. NAGARAJ. (2005). Plastic limit and
compaction characteristics of fine grained soils Ground
Improvement 9, No. 1, 17-22.
[7] Abendroth R.E., Greimann L.F. and Ebner P.B. (1989). "Abutment Pile
Design For Jointless Bridges." Journal of Structural Engineering, ASCE.
2914-2929 Accumulation." Journal of Hydraulic Engineering.1306-
1313.
[8] D.I. Stewart, P.G. Studds and T.W. Cousens (2003) "The factors
controlling the engineering properties of bentonite-enhanced sand"
Science direct, Applied Clay Science 23 97-110.
[9] Grim, R.E.,1968. Clay Mineralogy, 2nd ed. McGraw-Hill, New York..
[10] Sposito, G., 1984. The Surface Chemistry of Soils. Oxford Univ. Press,
New York.
[11] Van Olphen, H., 1991. An Introduction to Clay Colloid Chemistry, 2nd
ed. Krieger Publishing, Florida.
[12] Pusch, R.1999.Microstructural evolution of buffers Engineering
Geology 54, 33- 41.
[13] Pusch, R, Schomburg, J.1999.Impact of microstructure on the hydraulic
conductivity of undisturbed and artificially prepared smectitic clays.
Engineering Geology 54, 167-172.
[14] Melville B.W. and Coleman S.E.(1999)."Bridge scour." Water Resource
Publications,LLC.