1. What is a Liquid Limit Calculator for Travel?

Definition: This calculator estimates the liquid limit of soil based on water content and number of blows from standard testing.

Purpose: It helps geotechnical engineers and construction professionals determine the moisture content at which soil changes from plastic to liquid state.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( LL \) — Liquid limit (dimensionless)
• \( w \) — Water content (%)
• \( N \) — Number of blows (dimensionless)

Explanation: The water content is multiplied by the number of blows and divided by 25 to determine the liquid limit.

3. Importance of Liquid Limit Calculation

Details: Liquid limit is crucial for understanding soil behavior, determining foundation suitability, and assessing slope stability in travel routes.

4. Using the Calculator

Tips: Enter the water content in percentage and the number of blows from standard testing. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the liquid limit test used for?
A: It helps classify soils and predict their engineering behavior under different moisture conditions.

Q2: What's a typical liquid limit range?
A: Clays usually have LL between 40-60, while silts have lower values. Highly plastic clays can exceed 100.

Q3: How is the number of blows determined?
A: Through standardized Casagrande test where blows are counted until soil groove closes.

Q4: Why is 25 used in the formula?
A: It's an empirical constant that correlates blows to moisture content at the liquid limit state.

Q5: How does liquid limit affect travel routes?
A: High LL soils are more prone to weakening when wet, affecting road stability and pavement performance.