This standard specifies requirements for mixtures of the mix group mastic asphalt. It deals also with the selection of the constituent materials. Mastic asphalt is a voidless asphalt consisting of mineral aggregate, filler and bitumen. The mineral aggregate in the mixture is graded to be of low void content. The binder content is so adjusted to the void content in the mineral aggregate that the voids are completely filled. A slight excess of binder may be acceptable. Mastic asphalt is pourable when hot and requires no compaction.#,,#