Geofoam (GEOFOAM) yog cov khoom yas foamed ua los ntawm EPS ua raw khoom. Nws muaj cov yam ntxwv ntawm ultra-lub teeb yuag, ruaj khov zoo, elasticity, compression tsis kam, thiab thermal conductivity tsawg. Raws li cov xwm txheej ib txwm muaj, EPS cov khoom lag luam muaj cov tshuaj lom neeg ruaj khov, tsis muaj dej tsis zoo, tsis yooj yim rau hnub nyoog, yog corrosion-resistant, resistant rau kab mob, thiab tsis cuam tshuam los ntawm kev hloov huab cua. Lawv tau siv los tiv thaiv thiab tswj kev puas tsuaj ntawm txoj kab hauv qab, txo txoj kev sib haum xeeb, thiab txo qis kev txav mus rau sab nraud. Ua lub luag haujlwm tseem ceeb.
Geofoam tau siv nyob rau hauv lub ntiaj teb no rau ze li ntawm 50 xyoo. Xyoo 1972, Norwegian National Road Research Laboratory yog thawj zaug siv EPS thev naus laus zis rau kev kho ntawm txoj hauv kev ntawm cov hauv paus hauv av hauv thaj tsam ntawm Oslo. Xyoo 1990, peb lub teb chaws tau ua EPS board thermal rwb thaiv tsev txoj kev sim nyob rau hauv Kunlun Roob hla ntu ntawm Qinghai-Tibet Txoj Kev Loj thiab siv nws mus rau Chuma River txoj kev, tus choj Hongliang River mus txog txoj kev thiab thaj chaw qub kub kub. Thaum lub Kaum Ib Hlis 1994, Zhejiang Provincial Transportation Design Institute tau tsim EPS embankment kev tshawb fawb pab pawg, uas tau siv rau lub embankment ntawm Wangtong crossover bridgehead hauv Ningbo thawj zaug. Niaj hnub no, geotechnical ua npuas ncauj tau dav siv nyob rau hauv engineering tej yaam num xws li Ningbo-Taiwan-WenzhouExpressway, Hangzhou-NanjingExpressway, Shanghai-Nanjing Expressway, Shanghai F1, Disneyland, thiab Pudong Century Avenue reconstruction.