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

Rolling - binder, Rolling - Binder: The layer thickness is 40-50 mm. R...

Rolling - Binder: The layer thickness is 40-50 mm. Rolling is done in three stages : Initial Rolling By 80-100 kN smooth wheeled roller. Intermediate Rolling B

Functions of cap block drive cap and pile cushion, Question What are ma...

Question What are main functions of cap block drive cap and pile cushion in driven piles? Answer Cap block is fit amid hammer end and drive cap to manage hammer bl

Void ratio and dry density of a soil, Q. Define water content, void ratio ...

Q. Define water content, void ratio and dry density of a soil. If wet density of a soil is 1.9 gm per cm at a moisture content of 24%, what will be its dry density?  Ans. - W

Moment redistribution, how to draw the shear diagram after redistribution o...

how to draw the shear diagram after redistribution of moments

Raft and beam foundation, why is weight of raft not considered in structura...

why is weight of raft not considered in structural design of raft and beam

Slope protection, what is the type of slope protection that use rocks and p...

what is the type of slope protection that use rocks and put cements between those rocks??the concept is same as brick layer

Determine the expected extension at the jack, A cylindrical concrete tank,...

A cylindrical concrete tank, 30 m external diameter, is to be prestressed circumferentially by means of  high-strength steel wire (E, = 2 x  10 5   N/mm 2 )  jacked  at 4 points, 9

Traditional granular sub-base, Question For rigid pavement, what is rec...

Question For rigid pavement, what is recompense of using lean concrete sub-base instead of traditional granular sub-base? Answer There are some shortcomings of using

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