What is the difference between nominal mix and design mix?
- 13 Answers
- 76797 Views
- I also Faced
- E-Mail Answers
Answer Posted / er. bikash kumar deo ,civil en
Nominal mixes are those proportioned by the volume of the main ingredients and usually written in order of the ingredients thus Cement:Sand: Coarse aggregate (stone, chippings). So a 1:3:6 is a nominal mix containing 1 volume of cement, 3 volumes of sand and 6 volumes of coarse aggregate.
Gauge boxes are generally used to batch the ingredients. The problem with these types of mixes is that the quality of the concrete is entirely dependant on the quality of the materials. In other words, if you use the same gauge boxes to weigh ingredients from different sources, you will most likely have different concrete qualities.
Designed mixes on the other hand are specified as a grade the producer of the concrete has to achieve usually in terms of compressive strength but may include other criteria (size of the stone, minimum amount of cement, flexural strength, air content etc). So a grade 30 concrete will be the same whether batched in Kansas City, Karachi, Kingston-Upon-Hull or Kinshasa
| Is This Answer Correct ? | 7 Yes | 8 No |
Post New Answer View All Answers
Anyone have sample questions for bhel interview.please send me as Iam appearing for the interview on 19th sep2008. Kindly send this to my e-mail: arun_prasath_n@yahoo.co.in
i want to ecil (Electronics Corporation of India Limited Hyderabad) previous civil engineering question papers immediately please.............
kindly mail me by attaching files , formats for quality checks of common building materials like cement , concrete , bricks , sand and aggregates plz send my email id- VMANDAL91@gmail.com
water leak detection system question & answer
Technical Question of Civil Engineering
While calculating the weight of the steel per running meter, the formula used is [(dxd)/162]. Why 162 is used in denominator & how it is derived?
What is Density of cement, sand & aggregate ?
Please send me the qunty. of mason/labour required in each day for different type of civil construction work?please send me ans. in my mail.my mail id is (parthamitra086@gmail.com) or here.
what is the difference between replacement of cement by groundnut shell ash
Kindly post me previous year interview questions with answer for post of DY. Manager (civil engg.) for GAIL, NTPC, IOC, OIL and ONGC etc.
can i get civil engineering test papers.......?????
Sir, Iam Applied in rrb for the posts of Junior Engineer.I want to know about the or question previews to study well.Pl send it to shukla_varun1985@yahoo.com.
plz.show development and anchorage length in simple diagram.
pls send me interview question paper with answer of EIL/AAI/UPSC/RPSC because i am doing prepration of compitation exam of UPSC for the Asst. Executive Engineer
minimum number of bars in a beam? minimum and maximum column size and beam size ? minimum and maximum aggregate size used in multistorey residential building for columns,beams,slabs?
