A dry-bulk tanker for the provision of binding agent for soil stabilization for a spreading device, comprising a storage container (10) for binding agent. An intermediate chamber (20) is connected to the storage container and is also connected to a compression chamber (40). A conveying device (22) for conveying of binding agent into the compression chamber (40) is arranged in the intermediate chamber (20). A conveying channel (44) is connected to the compression chamber (40). The conveying channel (44) can be connected to a spreading device (58). Furthermore, a pneumatic line (46) for feeding of conveying compressed air is connected to the compression chamber (40) and/or the conveying channel (44).