1 Chemical additives for concrete; Chemical additives for grouting materials; Chemical additives for use in resins; All the aforementioned goods for use in mitigation of liquefaction and lateral spread during seismic events, consolidation, ground stabilisation and underground engineering, and to increase ground bearing capacity by compacting, densifying and reinforcing foundation soils; Chemical compositions for reinforcing concrete; Hardeners, namely, chemical additives for accelerating hardening of geopolymer resin; Chemical resins, namely, structural geopolymer resins; Resin chemical and cement based injection materials, namely, structural geopolymer resins for subterraneum void-filling, for increasing the bearing capacity of foundation materials by in-situ compaction, and for decreasing ground permeability; All the aforementioned goods for use in mitigation of liquefaction and lateral spread during seismic events and for ground stabilisation; Multi-component mixtures comprising expanding structural geopolymer chemical resins and chemical additives for accelerating hardening of geopolymer resin for use in mitigation of liquefaction and lateral spread during seismic events