ACC and Ambuja Cements, both Holcim group of Indian companies, have beaten the Street expectations in terms of a sharp increase in its profitability for the April-June quarter. Rise in realisation, coupled up with higher sales volumes, helped the sister companies post gains between 25 per cent and 35 per cent in their profits, against brokerages’ estimates, which were as low as 3.4-11 per cent.ACC, India’s second-largest cement producer, posted a 26.3 per cent rise in its consolidated net profit at Rs 414.5 crore, against Rs 328.1 crore in the previous corresponding quarter.Consolidated net sales grew 15 per cent to Rs 2,919 crore, compared to Rs 2,539.4 crore in the year-ago period. It sold 6.05 million tonne of building material during the quarter, up two per cent against 5.93 million tonne in the same quarter last year.