Objectives. The formation of the structure of hardened concrete grouting with two-stage expansion is a complex process that is influenced by many factors. both of a prescriptive nature (composition and additive dosage. mineralogical composition of Portland cement clinker. https://www.roneverhart.com/Plastic-Gift-Boxes-Gold-5X4X3-5-6-Pack-Bakery-Boxes-With-Base-Lid-Ribbon/