Experiment Study on High Water Material with Fly Ash Backfill Material
Ma Ling-ji
Abstract：A high water material as a backfill material would have many advantages ,but would be high in cost.In order to reduce the cost ,a backfill grout could be prepared with the fly ash in the high water pure grout rapid setting material. With a fine study on the mixing ratio of each component in the grout and the application of the special function additive ,a new material grout suitable for the backfill of the goaf was developed.With the test and measurement ,the grout could have excellent pumping perfor-mances ,short setting time ,high hardness ,surface densification and other features and the cost of the grout would be lower. The grout would be very suitable for the goaf backfill with high strength re‐quirement.
Keywords：high water materialfly ashbackfill materialgoaf backfill
Publication Date：2015-05-17
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 40-42 )