Question

In soil-cement lining the Portland cement is added to the soil up to the extent of ____________

(a) 4% to 5%

(b) 2% to 8%

(c) 0.1% to 5%

(d) > 10%

I got this question in my homework.

My question is from Earth Type Linings topic in section Lining of Irrigation Canals and its Economics of Irrigation Engineering

Answer 1

Right option is (b) 2% to 8%

The best I can explain: Portland cement up to the extent of 2% to 8% is added to the locally available soil. Water is then added and thoroughly mixed so as to bring the soil to its optimum moisture content. The material is then placed and compacted at the site.