After seeing some revival during January and February, cement prices came under pressure in March and April. With the monsoons coming and demand remaining sluggish, industry expects further correction. Demand weakened during July-December 2012. However, mid- January saw some recovery as prices increased Rs 5 a bag in Delhi, Rs 21 in Chandigarh, Rs 36 in Kolkata and Rs 7 in Mumbai between December and February. Nevertheless, with no significant demand, prices have come under pressure in March-April, slipping Rs 5-15 a bag in the north and Rs 10-30 in the west. In the south, prices have dropped three-four per cent, said a report. It added the Hyderabad market had seen some volatility in prices. While prices remained in the range of Rs 228-232 a bag till March.