Bureau of Indian Standards (BIS), Madurai, conducted Manak Manthan – Discussion on Indian Standard for IS 19058:2024 – Ultrafine Fly Ash, at BIS, Madurai office on 28 January 2025. 42 participants attended this meeting in virtual mode through Video conference. Representatives from various cement and cement related products manufacturers, Representative of Ready Mix Concrete Manufacturers Association, Member Secretary of the Technical committee from BIS Headquarters, New Delhi, participated in the Discussion.
Ultrafine fly ash (UFFA) is a very fine pozzolanic material (pulverized fuel ash) consisting of ultrafine, glassy, spherical particles of average size 3 micron to 5 micron. Due to the fine size of ultrafine fly ash particles, it has more reactive surface area, which helps to achieve higher early strength and lower permeability to the concrete mix due to mechanical packing effect of well graded fine particles. The ultrafine slag as well as ultrafine fly ash, both are indigenously produced in India while majority of silica fume is imported. The performance of these ultrafine materials when used as part replacement of cement in concrete or mortar in the range of 5 percent to 10 percent is comparable and found to enhance the properties and durability of concrete especially its permeability.
IS 19058:2024 contributes to the following Sustainable Development Goal: Goal 9 ‘Industry, innovation and infrastructure’ towards building resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation’, Goal 11 ‘Sustainable cities and communities’ and Goal 13 ‘Climate action’.
Shri S D Dayanand, Senior Director & Head of the BIS Madurai Branch Office, delivered the welcome address and outlined the program objectives. He also invited comments on this important Indian Standard which was published in December 2024. An in-depth presentation on the salient features of IS 19058:2024 – ULTRAFINE FLY ASH was presented by Shri A.K Jain, Representative of Ready Mixed Concrete Manufacturers Association, Mumbai and Member of Cement and Concrete Sectional Committee, CED 02, Civil Engineering products Divisional Council (CED). His expertise provided a deeper understanding about the uses, benefits and performance properties of Ultrafine fly ash, general features of IS 19058:2024 and advantages of Ultrafine fly ash over other Ultrafine materials.
Comments on IS 19058:2024 was raised by representatives of Ramco Cements Ltd, Ariyalur unit. A detailed open house discussion was held, and queries regarding the Indian Standard were clarified by Shri A.K Jain and Shri Jitendra Kumar Chaudhary, Asst Director, and Member Secretary of Cement and Concrete Sectional Committee, CED 02, BIS HQ, New Delhi. People are invited to comment on Indian Standards through BIS CARE App.