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Pick up the correct statement from the following:

A.  The maximum size of a coarse aggregate, is mm and minimum4. mm

B.  The maximum size of the fine aggregate, is4. mm and minimum0. mm

C.  The material having particles of size varying from0. mm to0. mm, is known as silt

D.  The material having particles of size less than0. mm, is known as clay

E.  All the above

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Question added by Ksenija Kancelak , Construction Project Manager , City of Koprivnica, Koprivnica (Croatia)
Date Posted: 2016/07/14
Yaqoub Alomar
by Yaqoub Alomar , Civil Engineer , Al-Zubeir municipality

Agree with Mr.Fuad's answer.

فؤاد أحمد حسين
by فؤاد أحمد حسين , مدير , حكومي

I think we have tow answer for this question , the first going with question for the choice A&B , but about the others C&D , sorry Ms ksenija , I do'nt know what the question mean by the siz 0 ,,, if we return back to the explanation of the AASHTO  classification  of soils and soil - aggregate mixtures for highway construction purposes M 145 table 2 which is maintained that the general classification of the silt-clay materials those which are contained percent passing from Sieve analysis No.200 (0.075 mm ) more than 35% and at least 36%  and the characteristics of fraction passing 0.425mm(No.40) of laquid limit for the group A4 must be 40max & 41 min for group A5 , and the plasticity index are 10max for A4 & A5 , those are usual types of significant constituent as ,,, Silty soils ,,, . And the other group classification A6 & A7 with the sub group A-7-5 & A-7-6 , also have 36min percent passing ( No. 200) 0.075mm , and the characteristics of fraction passing 0.425mm(No.40) ,of LIQUID LIMIT for group A - 6 must be 40max, and for group A-7 with subgroups A-7-5 & A -7-6 must be 41 min ,,, and the PLASTICITY INDEX for all A-6 and A-7wlth the subgroups All must be 11min ,,, those are usual types of significant constituent as ,,,, Clayey Soil ,,, .Sorry if I go with more details but I think its necessary for us to discuss this with the specification ,,,,, tanks

Hrvoje Kancelak
by Hrvoje Kancelak , Certificated Traffic Engineer , Office of independent engineer

The right answer is under E.  All the above

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