Abstract:
This study tested the chemical properties of washed and sieved off-shore sand available at
Muthurajawela sales stockpile of Sri Lanka Land Development Corporation (SLLDC). Chloride,
acid-soluble Sulphates and total Sulphur contents in accordance with SLS 1397 standards were
tested. Testing indicated that all the key parameters were significantly lower than the allowable
limit, which points to the fact that the constructions are not restrained. Decontamination by washing
and sieving is effective in eliminating or removing potentially harmful salts and other impurities
commonly found in marine sands, thus, limiting the chance of reinforcement corrosion, sulphate
attack and structural degradation. On the whole, the experimented offshore sand shows that it can
be used and applied in reinforced concrete and plain concrete use, guaranteeing durability and the
structural safety of building constructions.
