6Honeycombing in concrete is caused by:AToo much cementBUsing fly ashCPoor compaction or a harsh mixDExcess curingView AnswerDiscussWorkspaceReportSaveEasy
7Accelerators in concrete:AAdd airBDelay settingCReduce strengthDSpeed up setting and early strength gainView AnswerDiscussWorkspaceReportSaveEasy
8Segregation in concrete means:ASetting of cementBMixing of ingredientsCSeparation of coarse aggregate from the mortarDCuringView AnswerDiscussWorkspaceReportSaveEasy
9M20 concrete has a characteristic compressive strength of:A20 N/mm² at 28 daysB20 N/mm² at 7 daysC2 N/mm²D200 N/mm²View AnswerDiscussWorkspaceReportSaveEasy
10The slump test measures concrete's:AWorkabilityBDurabilityCSetting timeDCompressive strengthView AnswerDiscussWorkspaceReportSaveEasy