Explain the aashto classification system, Civil Engineering

Assignment Help:

Explain the AASHTO Classification System  

1.  Identify the percent passing the No.10, No. 40, and No. 200 sieves. Identify the LL and PI of the fraction passing the No. 40 sieve.  

2.  Use AASHTO Classification Table. Move from left to right using process of elimination until the first group consistent with the laboratory data is identified. 

557_AASHTO Classification System.png

3.  Special Notes: 

a) For groups A-4, A-5, A-6 and A-7: Calculate the group index (GI) using the equation shown below the classification table.  If GI is negative, it is reported as zero.   

b) For group A-7, the Plastic Limit (PL = PI - LL) is the differentiating factor between A-7-5 and A-7-6.  This is expressed in terms of Plasticity Index (PI = LL - LL), which you already use for classification.


Related Discussions:- Explain the aashto classification system

Maximum shear stress, Maximum shear stress: The state of stress at a c...

Maximum shear stress: The state of stress at a critical point of a strained solid is given by σ x = 70 kN/mm 2 , σ y = - 50 kN/mm 2 and τ xy = 45 kN/mm 2 . If the strength

Determine the coefficient of compressibility, A saturated clay layer 4 m th...

A saturated clay layer 4 m thick is located 6 m below GL. The void ratio of the clay is 1.0. When a raft foundation is located at 2 m below GL, the stresses at the top and bottom o

Construction equipments, what is preventive maintenance and state its advan...

what is preventive maintenance and state its advantages

Explain box jig, Explain Box jig? a) The box jig is so named because of...

Explain Box jig? a) The box jig is so named because of its box shaped construction, closed from most of the sides. b) It is normally designed for those components having awk

Extreme fiber stresses at the mid span section of the beam, Extreme fiber s...

Extreme fiber stresses at the mid span section of  the beam A pre-stressed concrete beam, of  cross section 300 mm x 500 mm and 8 m span, is pre-stressed with a parabolic tend

Application of bitumen to driven piles, Q. Application of bitumen to driven...

Q. Application of bitumen to driven piles? In a certain area of H-piles subjected to ground water table fluctuation, painting is occasionally applied on the surface of H-piles

Fundamental of physics, state and prove Heisenberg uncertainity principle?

state and prove Heisenberg uncertainity principle?

Chain survey, Instruments used in chain survey

Instruments used in chain survey

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd