Concrete Leveling Solutions - Learning Center

Learn more about what can cause your concrete to sink and become damaged.

Three Reasons Your Concrete Has Cracked

Three Reasons Your Concrete Has Cracked

Our team at Concrete Leveling Solutions has years of experience helping homeowners level and fix cracked and sinking concrete slabs. There is a number of reasons why your concrete slabs may have cracked including temperature and moisture fluctuation and soil settlement.

When it comes to cracked concrete there are two main types active and dormant. Active cracks are cracks that expand or deepen over time. Dormant cracks do not change over time unless they are affected by moisture expansion or impact. If you find a crack in your concrete, it is important that you have it sealed right away before it gets worse.

Why Did My Concrete Crack?

There are many different types of cracks that can occur in concrete slabs including plastic shrinkage, settlement, and pressure cracks. These cracks can all occur quickly and must be repaired to maintain the structural integrity of the concrete slab.

Plastic Shrinkage Cracks

The earliest crack that will form is because of a process known as plastic shrinkage. Plastic shrinkage can occur if the mixture of water and cement is too watery. Too much water will take up space, causing the solid ingredients in the mix to separate. When the water evaporates, the spaces in the mix remain, leaving cracks sometimes only a hair thin.

Settlement Cracks

Cracks caused by settling are usually identified by concrete sinking or settlement. If the soil underneath the concrete begins to settle or plant materials begin to decompose the lack of supporting material can cause your concrete to crack under stress. Other common reasons concrete may crack due to settling is from underground wiring or plumbing. Even minor movements underneath concrete can cause cracking over time.

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What Causes Concrete To Sink? | Concrete Lifting In Nebraska, Iowa, Missouri, and South Dakota

What causes concrete to sink or become uneven?

There are many reasons that can cause your concrete to sink and often times it can be hard to identify some of the problem areas. You will come across it in the form of uneven, cracked, or sunken concrete slabs. You will hear some companies refer to this as slab settlement. What is slab settlement you ask? Well, slab settlement refers to the sinking or movement of a concrete slab when the soil below the slab can no longer support the weight of it. This happens on driveways, patios, sidewalks, pool decks, stairs, garage floors, and foundations around the country.

The Three Main Reasons Your Concrete Is Sinking

When it comes to slab settlement and concrete sinking, changing soil conditions underneath your concrete is generally the main culprit. While there are many reasons that can cause this, there are three main causes.

Soil Washout underneath your concrete slab

Poorly compacted fill soil

Soil moisture content fluctuation

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