Per §10.8 (Step 5, Table 10.9), the correction for using ROUNDED aggre…

Question

Per §10.8 (Step 5, Table 10.9), the correction for using ROUNDED aggregate (instead of the standard angular reference) is:

Accepted Answer

C. {'text': '-15 kg/m³ to water, -7 percent to sand content', 'label': 'C'}

1. Table 10.9 lists: 'For rounded aggregate: Water Content -15 kg/m², Sand% -7%.'
2. Rounded shape gives more workability with less paste, so both water and sand can be cut at the same target compacting factor.
_Source: IGNOU ET-522 Block-3 Unit-10 Concrete Mix Design, Table 10.9, §10.8 Step 5, p. 18_

Answer

{'text': '+15 kg/m³ to water, +7 percent to sand content', 'label': 'A'}

Answer

{'text': 'Zero change in water content or sand%', 'label': 'B'}

Answer

{'text': '+50 kg/m³ to water only, with no sand% change', 'label': 'D'}