Effect of Ultra-Fine Cement on the Strength and Microstructure of Humic Acid Containing Cemented Soil

The peat soil in the Dianchi Lake area of Yunnan, China, is widely distributed, bringing many problems to engineering. foundation usually treated by cement mixing method, and reinforcement effect cemented mainly affected humic acid (HA). Ultra-fine (UFC) can improve performance reduce consumption, decreasing CO2 emissions impact human activities on environment. Simulated soils different environments are prepared with HA reagent cohesive soil, reinforced composite curing agent mixed ultrafine (UFC). relationship among UFC proportion, content, soaking time, sample strength was studied. unconfined compressive test (UCS), scanning electron microscope (SEM), PCAS microscopic quantitative techniques were used explore mechanism HA-containing soil. increasing proportion gradually increased soil’s strength. significantly reduced percentage macropores made microstructure denser. qu most when from 0% 10%. solidification always stronger than that OPC. a 10% practical. Cement still an important building material current construction industry, provides new method for reducing environmental engineering construction.