RoadCem (RC) is an additive produced based on nanotechnology and comprises of synthetic zeolites and alkali earth metals as some of its components. The geotechnical properties of a soil stabilized by adding RC to partly replaced cementitious materials are studied. Various combinations of the additives were investigated with the objective of reducing the amount of OPC by 50% by an inclusion of RC and ground granulated blast furnace slag (GGBS) in the stabilized soil. Laboratory studies involving index property testing, oedometer swell-deformation, unconfined compression tests and microstructural examinations were carried out on both the natural and 7-& 28- day cured samples of the stabilized soil. The influence of RC on the mechanical properties of the stabilized soil was examined by comparing the performance of the stabilized soil mixtures that contain the RC and the mixtures without the RC added. Results indicated the positive effect of RC as noticed by the tremendous strength gain in 7 days with the OPC reduced by 50% in the stabilized soil. Swelling decreased significantly to 0% after 28 days curing with the settlement also reasonably reduced for nearly all the percentages of the OPC substituted. The stabilized soil’s microstructure revealed the mechanism of cementation observed as an encapsulation or “wrapping effect” as a result of the presence of RC. A comparison of the RC-modified soil containing the by-products GGBS and PFA indicated that GGBS was more effective in the enhancement of engineering properties than PFA. Overall, as well as meeting some of the standards set for road pavement applications, the results obtained from this research are very promising for the ongoing discussions on reducing carbon foot-printing by OPC replacement.

RoadCem（RC）是基于纳米技术生产的添加剂，由合成沸石和碱土金属作为其某些成分。研究了通过在部分替代的胶结材料中添加RC来稳定的土壤的岩土特性。研究了添加剂的各种组合，目的是通过在稳定的土壤中加入RC和磨碎的高炉矿渣（GGBS）将OPC的量减少50％。对稳定土壤的天然和7天和28天固化样品进行了包括指数特性测试，里程表膨胀变形，无边压缩测试和微观结构检查在内的实验室研究。通过比较含有RC的稳定土混合物与不添加RC的混合物的性能，研究了RC对稳定土力学性能的影响。结果表明了RC的积极作用，在稳定的土壤中，OPC降低了50％，在7天的巨大强度增长中就可以看出。固化28天后，溶胀率显着下降至0％，并且几乎所有百分比的OPC替代物的沉降量也都得到了合理降低。稳定的土壤微观结构揭示了由于存在RC而观察到的胶结机制，即是一种包封或“包裹效应”。包含副产物GGBS和PFA的RC改性土壤的比较表明，GGBS在增强工程特性方面比PFA更有效。总体，