TITLE:
Law of Distribution of Quantities of Shells on Togolese Littoral
AUTHORS:
Kossi Bollanigni Amey
KEYWORDS:
Sediment, Togolese Littoral, Quantity of Shells, Distribution
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.10 No.1,
March
26,
2020
ABSTRACT: This study aims at analyzing the repartition of the quantities of shells
of sand sediments of Togolese littoral, and at determining the law underlying
their longitudinal and transversal distributions. Samples (210), collected all
along Togolese littoral starting from Togo-Ghana border up to Togo-Benin border,
are subject to the test of sieving. Each refusal on sieve is tested against
construction of shells by hydrochloric acid. The determination of the quantity
of shells according to their size and to longitudinal and transversal
distributions on the littoral is completed. As a conclusion, the quantity of
shells in the sediments is getting lower and lower starting from the aerial
mid-beach (14.2%) to the mid-foreshore (11.80%), and getting higher and higher
from the mid-foreshore (11.80%) to the low-foreshore (13.32%). It is getting
lower and lower according to the direction of sediments’ transportations. This
quantity of shells is high (40.87%) in the fine-grained sands (Ø Ø > 2 mm) and low (>24.26%) in the average-grained sands (0.125 mm ≤ Ø ≤ 2 mm). The average quantity of shells of 12.67% is lower than the
recommended maximum quantity (30%) for the sands used for concrete. Thus, for
the concrete works, the littoral sands might be seen as useful since they are granulating
for concrete.