Basic keywords related to road materials, Civil Engineering

Basic Keywords related to road materials:

Sub-grade     :           The portion of road embankment immediately below the pavement.

Soil Classifications :           A system of classifying soils.

Gravel            :           A coarse gained soil having more than half of coarse fraction.

Sand   :           A coarse gained soil having less than half of coarse fraction.

Slit      :           A fine grained soil having particles of size 0.002- 0.075 mm.

Clay    :           A fine grained soil having particles of size less than 0.002 mm.

Soil Compaction      :           Densification of soil to a desired density.

Optimum Moisture Content         :           The moisture content at which the density is (OPM) maximum.

Maximum Dry Density (MDD)    :           The maximum density of soil achieved with optimum moisture content.

Proctor Density        :           Density obtained by the method of compaction prescribed by Proctor and used for low volume roads.

Modified AASHTO Density         :           Density obtained by a heavy rammer and used for high traffic roads.

Sand Replacement Method          :           A method of determining the density achieved in the field.

Califormic Bearing Ratio   :           A measure of the supporting capacity of a soil (CBR)   sub-grade.

Igneous Rocks         :           Rocks such as granite and basalt formed by cooling of molten volcanic material.

Sedimentary Rocks :           Rocks formed by deposition of granular material.

Metamorphic Rocks           :           Rocks formed by transformation of igneous and sedimentary rock through heat and pressure.

Limestone     :           Rock containing mainly Calcium Carbonate.

Laterite          :           Rock formed by decomposition of basalt and other rocks.

Gradation      :           A system of determining the particle size distribution of aggregates.

Deleterious Material           :           Materials like vegetable matter, soft particles, clay lumps, mica, coal, etc. which can adversely affect the performance of road aggregates.

Posted Date: 1/22/2013 3:15:13 AM | Location : United States







Related Discussions:- Basic keywords related to road materials, Assignment Help, Ask Question on Basic keywords related to road materials, Get Answer, Expert's Help, Basic keywords related to road materials Discussions

Write discussion on Basic keywords related to road materials
Your posts are moderated
Related Questions
I have to draw the IL for the shear at a roller support and am not sure how it should look

in compression member [strut] why no deduction of area of rivet hole?

Landslides induced by rainfall After rainfall, groundwater pressure is built up and this elevates ground water table. Water inside the pores of soil reducesthe effective stres

what are tie lines? explain in detail

Concept of load balancing In above cases of concentric and eccentric pre-stressing, straight tendon profiles (or tendon shapes) along the beam span have been considered. If a t

Q. Sand layer vs. cement sand used as bedding of precast concrete paving units Cement sand is a mixture of sand and cement and it behaves as a cohesive mass once mixed. Usuall

Question After construction of watermain, earlier to hydrostatic pressure test , swabbing is approved out. What is main purpose of swabbing ? Answer Pipelines ha

Q. How to set Location of the bridge? A bridge is normally located where the river section has minimum width so that the structure becomes shorter and economical. As far as pos

Determine the normal and shear stress elements: The state of stress at a point is given through the stress components σ x = 70 MPa, σ y = 10 MPa, and τ xy = - 40 MPa. Using

Gravity flow is fluid flowing because of the forces of gravity alone and not to an applied pressure head. In the Bernoulli equation, the pressure term is omitted, and the height an