Which soil is called morum?
Moorum( or murum) is the word derived from the Tamil language, which means powdered rock. Moorum. Moorum is also a type of soil, mostly used for construction purposes. Generally, it is deep brown or red in color. Moorum is used in plinth filling, road pavements, backfilling in trenches, footing pits, etc.
Is Murrum a granular material?
Murrum is widely used material for the construction of pavement shoulders. Sometimes the available murrum may not satisfy the requirement of CBR and hence need to be modified. The locally available granular material like sand and/ or the crusher dust may be mixed to the soil to obtain the desired characteristics.
What does Murrum mean?
(ˈmʌrəm ) a gravelly lateritic material, often used to surface minor roads in parts of Africa.
How laterite soil is formed?
The laterite soil is formed under conditions of high temperature and heavy rainfall with alternate wet and dry periods, which leads to leaching of soil, leaving only oxides of iron and aluminum. It lacks fertility due to a lower base-exchanging capacity and a lower content of nitrogen, phosphorus, and potassium.
What is Murrum filling?
Description. A fill refers to a volume of earthen material that is placed and compacted for the purpose of filling in a hole or depression. Embankments or fills are constructed of materials that usually consist of soil, but may also include aggregate, rock, or crushed paving material.
What is the use of Murrum?
What kind of soil is laterite soil?
laterite, soil layer that is rich in iron oxide and derived from a wide variety of rocks weathering under strongly oxidizing and leaching conditions. It forms in tropical and subtropical regions where the climate is humid.
Why laterite soil is called laterite?
Definition and physical description He named it laterite from the Latin word later, which means a brick; this highly compacted and cemented soil can easily be cut into brick-shaped blocks for building. The word laterite has been used for variably cemented, sesquioxide-rich soil horizons.
What is Murrum road?
Murrum Road: A murrum soil is a mixture of soil, sand and gravels, and concrete. The construction of these roads is quite similar to the above mentioned, the Earthen and the Gravel Road, but are different on the basis of material used in their construction.
What are the five features of laterite soil?
(i) Laterite Soils are leached Soils because alternating dry and wet spells cause the soluble silica to be removed. (ii) These Soils are acidic in nature and coarse and crumbly in texture. (iii) The proportion of lime and silica is reduced when leaching takes place.
What is laterite made of?
Laterites consist mainly of quartz, zircon, and oxides of titanium, iron, tin, aluminum and manganese, which remain during the course of weathering. Quartz is the most abundant relic mineral from the parent rock. Laterites vary significantly according to their location, climate and depth.
Who discovered laterite soil?
Laterites were first described by Buchanan (1807) in southern India. They have subsequently been the subject of numerous studies, which is partly related to their importance in various disciplines.
What is Murram sand?
A form of laterite (clayey material) used for road surfaces in tropical Africa. ‘In order to make these roads passable during rainy season, grading them to murram status is ongoing. ‘ ‘If murram or good quality clay is not available, use sand for filling with adequate watering.
Where laterite soil is found?
Laterite soils are mainly found in Karnataka, Kerala, Tamil Nadu, Madhya Pradesh, Andhra Pradesh and the hilly areas of Odisha and Assam. After adopting appropriate soil conservation techniques particularly in the hilly areas of Karnataka, Kerala and Tamil Nadu, this soil is very useful for growing tea and coffee.
What type of soil is laterite?
What are the features of laterite soil?
What type of soil is laterite soil?
What is the features of laterite soil?
What is laterite soil?
What is WBM material?
WBM road means water bound macadam road. The wearing surface of WBM road consist of clean and crushed aggregates which are mechanically interlocked by rolling operation. The material is bound with filler material (which are also called as screenings) and water, laid on prepared base course.
What is Murrum soil?
Murrum soil is the soil of humid tropical or equatorial zones. It is characterised by the deep weathered layer fom which silica has been leached. Thus, there is no humus, but an accumulation of aluminium and iron oxides and hydroxides. These soils are reddish in color & is imparted by the iron compounds.
What is the difference between Murrum and laterite soil?
They are generally impervious. Murrum or Moram is typically an Indian term. The geological equivalent term is Lateritic soil. Laterite is a soil and rock type rich in iron and aluminium , and is commonly considered to have formed in hot and wet tropical areas.
Can Murrum be used for pavement shoulders?
Murrum is widely used material for the construction of pavement shoulders. Sometimes the available murrum may not satisfy the requirement of CBR and hence need to be modified.
How effective is Moorum as a sub base material over expansive soil?
In the present work effectiveness of moorum proposed as sub base material over expansive soil for control of swell has been evaluated. Expansive soil is compacted in CBR mould up to different heights (0.5H, 0.6H, 0.67H, 0.75H and 0.8H) at a dry density of 1.55 g/cc and at a moisture content of 23.2%.