# Effects of Time Content on Road Performance of Low Liquid Limit Clay
## 1 Introduction
[PERSON] [17] conducted triaxial tests, including the Afterberg limit, standard invigilation compaction, unconfined compressive strength, and unconsolidated undrained strength, to assess the impacts of the stabilizer type, variable curing duration, and different lime-sludge ratio. The results of the tests indicate that sludge and lime can improve the maximum strength. The fundamental interactions between lime and clay during the stabilization process have also been extensively researched and elucidated. They contend that the four reactions listed below--cation exchange, flocculation and agglomeration, lime carbonization, and finally, volcanic ash reaction--are responsible for the improved performance of lime-stabilized soil [18; 19; 20; 21; 22; 23; 24; 25; 26]. The strength of lime soil is produced through a pozzolanic reaction, which is the most important process. There are only a few studies on low liquid limit clay, and the majority of them are about new roadbeds, while a small number of them are about road reconstruction and expansion. The aforementioned studies primarily concentrate on the mechanism of the lime improvement of poor soil, and the research objects are primarily expansive soil and saline soil, etc. The effectiveness of lime as a stabilizer has also been thoroughly researched by academics. [PERSON] et al. [27] stabilized lime with 5-25% lime content utilizing laterite as the test object. Compressed stabilized earth blocks (CSEB) were stabilized with lime by [PERSON] et al. [28], and the ideal lime concentration was 28%. Lime was employed as a stabilizer by [PERSON] al. [29] to alter the proportion of clay to sand, and they found that 8% was the best dosage. Lime is another stabilizer used by [PERSON] [30], and the ideal dosage is 15%. Lime is used by [PERSON] [31] as a stabilizer to provide the best lime content in various material proportions. According to a review of earlier studies by [PERSON] et al. [32], the optimal lime level is between 6% and 12%. The findings of the pertinent research that the aforementioned academics conducted on lime as a stabilizer are displayed in Table 1. The ideal lime content range is often between 6% and 15%, however there is no precise and optimum value of lime content for diverse uses and types of improved soil. In conclusion, lime has a wide variety of applications and has a good application effect in improving expansive soil, red clay, and other soils. Relevant studies have also produced fruitful outcomes, but there are still some limitations. For example, the studies mentioned above mostly concentrate on the research mechanism, while there is a dearth of study on low liquid limit clay, new roadbeds, and rehabilitation and expansion. In order to identify the representative low liquid limit clay, this paper analyzes its natural moisture content, particle gradation composition, boundary moisture content, compaction test results, and California bearing ratio (CBR value) as specific research indicators. It then modifies this clay by adding digestion lime to study its basic performance indicators. The optimum lime content of subgrade filling provides a reference and guidance for construction. It provides a feasible disposal idea for road construction.