Unfortunately, reinforced concrete is not the most environmentally sustainable material. The concrete industry is working to develop products that are more environmentally friendly in response to consumer demands. Products like Grancrete and Hycrete are becoming more readily available. They claim to be environmentally friendly and either reduce or eliminate the need for additional waterproofing. However, these have not been extensively used in earth shelter construction yet.
unfoRtUnatEly, rEInfoRceD CoNCrete Is NoT tHE most EnViRonmeNtalLy sustAInABle matERIAL. thE ConCreTE iNdustrY Is woRkInG TO DeVeloP proDucTs thAT are MOre envIronMeNTAlly frIeNdlY in ResPoNSe to cOnsumer DEmaNdS. PRoducts LIkE granCreTE And HycRetE are becoming morE reAdily AvailaBle. THeY claIm To be eNviROnmeNtAlLy FrIeNdly ANd eIthEr reduCe or ELimInAte thE Need FOr AdditiOnaL wAtErprooFING. HOwevEr, THEse haVe NoT BeEn eXtenSively uSed In eArth ShElter COnstRuCTioN yEt.