Expert Guide

Babu

Concrete Calculators

Concrete Shrinkage Calculator – Drying Shrinkage

Quality Inspector

Kaka

Calculate the approximate linear shrinkage of concrete over time to help in determining joint spacing.

📐 Formula & Method

Shrinkage is Length × Shrinkage Coefficient. It is typically expressed in microstrain (10^-6).

ΔL = L × ε

📋 Worked Example

For 10m length with 500με:
• ΔL = 10 × 500 × 10^-6 = 0.005m = 5mm

❓ Frequently Asked Questions

What causes concrete shrinkage?

The primary cause is the loss of excess water as the concrete dries. Other factors include carbonation and thermal contraction.