Home › B.Tech Civil › civilengineering › Concrete Mix Design › Per §10.6, methods listed in the source for blen…
Per §10.6, methods listed in the source for blending different aggregates to match a standard grading curve include all the following EXCEPT:
A{'text': 'Analytical Method using simultaneous equations', 'label': 'A'}
B{'text': 'Graphical Method using percent-passing plots', 'label': 'B'}
C{'text': 'Lateritic-Soil Replacement Method using sub-grade soil', 'label': 'C'}
D{'text': 'Trial and Error Method with iterative test mixes', 'label': 'D'}
Answer & Solution
Correct answer: C. {'text': 'Lateritic-Soil Replacement Method using sub-grade soil', 'label': 'C'}
1. §10.6 names exactly three methods of blending aggregate: (i) Analytical Method, (ii) Graphical Method, (iii) Trial and Error Method.
2. There is no 'Lateritic-soil replacement' method in the source — that option is the distractor.
_Source: IGNOU ET-522 Block-3 Unit-10 Concrete Mix Design, §10.6, p. 11_
Related questions
Per §10.8 (Step 8), the correction applied to mix proportions when site aggregates are fouPer §10.10 (High Strength Concrete Mix), the addition of Condensed Silica Fume (CSF) at abPer §10.10 (High Strength Concrete Mix), the use of a SUPERPLASTICIZER allows the water coPer the worked illustrative example in §10.9 (M 20, 20 mm angular, 0.90 CF, good control, Per §10.8 (Step 9, Trial Mix), the calculated mix proportions are verified by casting at lPer Table 10.5 (durability in mix design), the MINIMUM cement content for REINFORCED concrPer §10.8 (Step 5, Table 10.9), the correction for using ROUNDED aggregate (instead of thePer §10.8 (Step 5, Table 10.9), if the actual compacting factor is 0.1 HIGHER than the ref