Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae.

Sep 1, 1998 · The performance of marl when used in base-course construction of roads under excessive loading and severe exposure conditions is questionable. However, these materials can be efficiently upgraded if treated with small percentages (4–5%) of Portland cement.

Feb 27, 2024 · The engineering properties of marl are better than sand, marl is typically blended with sand to create structural road base material, however marl looses much of its physical strength when wet and requires stabilization to maintain bearing capacity and hardness.

Jul 31, 2017 · Marl is usually used as sub-grade layers or as a backfill in base and sub-base layers for highway pavements. This type of soil has poor strength and high water sensitivity; a drastic loss of bearing capacity may occur upon immersion.

This paper presents the results of a laboratory investigation focused on the improvement of indigenous marl for its use as a road base material. Various tests were conducted to both characterize and quantify the strength and durability of the studied marl under different field-simulated conditions with and without chemical treatment (lime and ...

The laboratory investigation indicated that the marl used in the construction, similar to other marls, has acute water sensitivity and loss of strength whenever the soil is inundated. A precautionary and immediate solution was proposed to stabilize the soil with cement.

Marl, containing primarily carbonate (CaCO3) and clays of different percentages with occasional traces of organic matter, silt or sand is usually used as bases and sub-bases for roads and...

Marl is usually used as sub-grade layers or as a backfill in base and sub-base layers for highway pavements. This type of soil has poor strength and high water sensitivity; a drastic loss of bearing capacity may occur upon immersion.

Sep 1, 1998 · In almost all of these projects, calcareous sediments, locally known as marl, were used in foundations and in base-course construction of all service roads and highways. These materials are heterogeneous in nature and their engineering properties and performance under the local harsh environmental and loading conditions have not yet been ...

Oct 1, 2010 · Marl is one of the four (i.e., sand, marl, clay and sabkha) predominant types of soil found in eastern Saudi Arabia. Due to the unsuitability of the other three soils, marl soils are uniquely used in the construction of all types of road bases, embankments and foundations.