On the Characterization of Dredged Marine Soils from Malaysian Waters: Physical Properties

Abstract

Every year, large volumes of dredged marine soils (DMS) are removed from Malaysian water. Dredging activity is needed to maintain and enlarge water bodies. DMS properties are varies depending to space, time and land uses in the watershed. DMS were also reported to be contaminated with chemical and biological contaminants, making the materials risky for reuse. Information on DMS properties, e.g. physical, chemical and biological properties is essential to the selection of a suitable reuse option. This study is focused on the characterization of Malaysian DMS for beneficial reuse. Three samples from different dredging sites and one sample of sediment as a control were used in this study. Physical properties of DMS from Malaysia water were identified and quantified. The DMS were classified as high plasticity clay (CH), high plasticity silt (MH) and low plasticity silt (ML) for Lumut, Melaka and Tok Bali respectively. The results showed that the DMS from different locations have different physical properties. Thus, the characterizations of DMS with regards of physical properties are significant in decision making either to be reused or disposed.

Experimental evaluation of compressibility parameters of lime and silica fume stabilized dredged soil

“…Dredging is the operation of removing material from one part of the water environment such as rivers, lakes, seas, oceans and harbors, and relocating it to another. Dredging is carried out for many different purposes and in many different locations [1], [2], [3]. Dredged soil can be used in land reclamation applications such as wildlife habitat development, construction and filling materials, road and foundation embankments [4], [5], [6].…”

“…The liquid limits of the dredged and sediment materials were determined 37 and 95% and the plastic limits were 26 and 36%, respectively. The specific gravity values also were designated as 2.41 and 2.68 [3]. Yu et al [10] investigated the physicochemical properties of dredged soil treated with self-cementing Class C fly ash.…”

“…When the literature is examined, there are many studies conducted to determine the geotechnical index properties of the dredged soils. Shahri and Chan [3] examined the geotechnical index parameters of dredged materials taken from three sites (Lumut, Marina Melaka, Tok Bali) in Malaysia. The obtained test results of dredged materials were compared with the sediment sample from the Pasir Gudang region.…”

Sustainable Strength Improvement of Soft Clay Stabilized With Two Sizes of Recycled Additive

“…Moreover, it is also associated with low permeability and uncertainty of performance [20]. The liquid limit of soft clay is usually found in a value that is lower than its natural moisture content [21]. The existence of clay minerals (e.g.…”

Türkiye'deki deniz dibi tarama malzemelerinin faydalı kullanım öncesi çevresel etkilerinin belirlenmesi: Ticari limanlar & balıkçı barınakları

“…ve c) zirai/ürün kullanımı (yüzey toprağı [23,24], karayolu dolgusu [10,25], tuğla [26,27], seramik [28,29], hafif agrega [30,31], hazır beton [32], beton parke taşı [33,34], çimento [35,36] [14,37]. Çeşitli araştırmacılar en uygun faydalı kullanım alternatifini seçebilmek için çalışmalarında sediman ve DTM'lerin (Fransa Dunkirk Limanı deniz sedimanı [10,38], Tunus Rades ve Gabes Limanları deniz sedimanı [39], İrlanda deniz dibi tarama malzemesi [16], Malezya deniz sedimanı [40]) karakterizasyonunu ve dolayısıyla çevresel etkilerini incelemişlerdir. Ancak, Türkiye kıyılarındaki DTM'lerin detaylı çevresel karakterizasyonu, sedimanların aksine, daha önce çalışılmamıştır.…”