Mechanical Properties of Seashell Concrete

A review on seashells ash as partial cement replacement

“…But for the 4% of optimum percentage of replacement, the result was different. Olivia et al [18] found that the compressive strength for the 7 and 28 days curing cockle shell concrete are 31.5 and 36 MPa respectively, while for the control sample, it was 32 and 36.5 MPa. From both result, it can be seen that the compressive strength of the cockle shell was lower than the control sample.…”

“…Adekunle [20] stated that the concrete which contained periwinkle shell as partial cement replacement gained the most compressive strength compare to snail and oyster shell recorded at 19 MPa after 28 days curing which was higher than the control sample reading at 17.5 MPa. For the cockle, the concrete of grade 35 MPa had been made [7,18]. Although the material was the same, the optimum percentage of replacement was different which is 5% [7] and 4% [18].…”

“…For the cockle, the concrete of grade 35 MPa had been made [7,18]. Although the material was the same, the optimum percentage of replacement was different which is 5% [7] and 4% [18]. According to Nor Hazurina et al [7], the compressive strength of control sample for the 7 days curing is 38 MPa and it was higher than cockle shells concrete (34 MPa).…”

“…The longer curing duration also important to make sure the concrete strength was developed from the pozzolanic reaction [21]. Olivia Monita et al [18,19] found that the tensile strength of the cockle and clam shells concrete are higher than the tensile strength of the control samples in 7, 28 and 90 days curing. It was reported that with an addition of 5% cockle ash, the tensile strength icreased significantly [7].…”

Mechanism of Bonding in Seashell Powder Based Ceramic Composites Used for Binder-Jet 3D Printing

“…Selective Laser Sintering [3], Selective Laser Melting [4], and three dimensional printing [5] are the most important of these technologies. Seashell powder is a natural bioceramic and has been used as an abrasive aggregate auxiliary ingredient in the production of low strength and lightweight concrete, suitable for applications such as concrete pavers [6]. Considering the abundant availability of seashells and the powder-based processing options, it is interesting to evaluate the feasibility of additively processing seashell powders.…”