| Trencher mixing is a soil improvement method involving cement、 and uses a backhoe as its base machine. The low weight of backhoes removes the need for a sand mat to ensure trafficability、 but the lack of such a mat causes temperatures at the surface of cement-treated ground to become lower than the external temperature、 thus affecting the solidification of the cement. As this is a problem for construction in winter、 the influences of the curing temperature and the strength of cement-treated soil were studied in a laboratory test. Peat was used as the cement-treated material for its characteristics as a soft soil found widely in cold regions. The results indicated that the strength of cement-treated soil decreased with reduced temperatures. The decrease was especially remarkable at sub-zero temperatures. |
