Early age cracking - Buildr

Early stage cracking

Different types of early stage cracking can affect your concrete. So it’s helpful to know what they are, how they are caused and how to prevent them. Early stage cracking can be caught and prevented before and during the concrete pour. This post aims to help you identify them.

Plastic cracks are a type of early stage cracking that occur in the first few hours of concrete setting. These types of cracks include plastic settlement and plastic shrinkage cracks.

Plastic settlement cracks

Cause: Heavier aggregates go to the bottom of the concrete mixture. This pushes lighter material such as cement paste and water to the top. Thus causing concrete bleed, where there is a thin layer of water on top of the concrete.

Common locations: Around reinforcement beams, in deep sections, at the tops of columns and in slabs.

Time after placing: These cracks can be found between 10 minutes and 3 hours.

Preventative actions: Choose a mix with a low water cement ratio. Micro-fibres and plasticizers can reduce bleeding and plastic settlement cracks. Air entrainment admixtures also help to reduce these cracks. Curing your concrete correctly is one of most important things you can do. We have another blog post dedicated to this topic alone. We can help you choose the right mix for your job if further help is needed.

Corrective actions: If plastic settlement cracks occur, re-vibrate the surface of the concrete. If the cracks still show when the concrete hardened, dry brush cement powder over the surface. Plastic settlement cracks are not structural, so they don’t affect the integrity of the concrete structure.

Plastic shrinkage cracks

Cause: Rapid early drying caused by weather conditions. Not enough water to complete the chemical reaction between cement and water.

Common locations: Roads, slabs and reinforced concrete slabs.

Time after placing: These cracks can be found within 30 minutes and 6 hours.

Preventative actions: Ensure that the mix has enough water, especially in hot or windy conditions. Wind can cause evaporation even more than heat, so using wind guards or covers can prevent this.

Corrective actions: Good curing is important, it can keep moisture within the concrete.

Terms & Conditions

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec hendrerit ipsum vel fermentum commodo. Vivamus porttitor maximus tempus. Vivamus ac ex sed lorem facilisis ultrices eget vitae quam. Fusce lectus magna, convallis sit amet nisl vel, blandit mattis diam. Etiam eget erat malesuada, hendrerit neque id, pellentesque lorem. Duis aliquet sapien ac diam eleifend semper. In hac habitasse platea dictumst. Vestibulum maximus arcu at ex rhoncus, sit amet vehicula orci sodales.

Suspendisse id vestibulum ipsum, nec tristique tellus. Suspendisse scelerisque quis elit elementum lobortis. Suspendisse lobortis nunc vitae mauris mollis, id ornare odio fringilla. Quisque elementum, sapien at efficitur interdum, orci ante ornare odio, sodales ornare arcu ante sed ante. Praesent scelerisque tortor eget pharetra gravida. Nam rhoncus vitae purus ut hendrerit. Praesent pharetra convallis ornare. Morbi pharetra congue sodales. Nam eget laoreet ipsum. Maecenas egestas non massa et sodales. Donec bibendum dignissim turpis vel consectetur. Curabitur orci enim, ultrices et pretium in, finibus quis magna. Proin rhoncus, mi ac hendrerit fringilla, turpis erat blandit nisl, sed iaculis ex lacus quis est. Aliquam varius ex a congue placerat. Aenean augue felis, lobortis euismod interdum eget, fermentum eget libero. Phasellus faucibus euismod consequat.

Pellentesque scelerisque lacus ac nibh suscipit bibendum. Quisque suscipit ante non elit laoreet, eget tempor dui vulputate. Proin pretium dui sapien, eu maximus urna bibendum posuere. Duis ullamcorper, lacus vel malesuada convallis, tellus lectus eleifend lectus, in pharetra ligula mi ut nunc. Maecenas rhoncus blandit ultrices. Aenean vel iaculis lectus, dignissim vestibulum massa. Aenean at nisl sed purus bibendum sollicitudin volutpat a libero. Nullam condimentum velit justo, sit amet dapibus elit aliquet a. Integer tristique felis ut vulputate feugiat. Phasellus sollicitudin et eros id lobortis. Sed sollicitudin tempor mi, eu sagittis ante interdum non. Phasellus posuere vitae eros nec tempus. Nulla facilisi.

Maecenas maximus aliquet tincidunt. Vivamus ultricies magna in semper placerat. Integer placerat congue enim ut euismod. Proin tristique, quam id maximus placerat, neque metus sollicitudin diam, pretium mollis neque arcu id lorem. Aliquam quis metus tellus. Nam non dignissim turpis. Sed venenatis a felis eu imperdiet. Fusce id metus dui.

Etiam placerat sem a nisi tincidunt accumsan nec sed turpis. Fusce maximus sem auctor semper fringilla. Nam faucibus tortor sapien, gravida auctor velit blandit ut. Sed eu urna arcu. Sed congue, lorem et pharetra ultricies, elit nisi ullamcorper enim, sed tincidunt eros nisl at orci. Suspendisse porta ullamcorper sapien sagittis molestie. Phasellus non leo fringilla, bibendum tortor sit amet, volutpat orci. Aenean facilisis erat et neque tincidunt mollis.

 

You have Successfully Subscribed!

Privacy Policy

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec hendrerit ipsum vel fermentum commodo. Vivamus porttitor maximus tempus. Vivamus ac ex sed lorem facilisis ultrices eget vitae quam. Fusce lectus magna, convallis sit amet nisl vel, blandit mattis diam. Etiam eget erat malesuada, hendrerit neque id, pellentesque lorem. Duis aliquet sapien ac diam eleifend semper. In hac habitasse platea dictumst. Vestibulum maximus arcu at ex rhoncus, sit amet vehicula orci sodales.

Suspendisse id vestibulum ipsum, nec tristique tellus. Suspendisse scelerisque quis elit elementum lobortis. Suspendisse lobortis nunc vitae mauris mollis, id ornare odio fringilla. Quisque elementum, sapien at efficitur interdum, orci ante ornare odio, sodales ornare arcu ante sed ante. Praesent scelerisque tortor eget pharetra gravida. Nam rhoncus vitae purus ut hendrerit. Praesent pharetra convallis ornare. Morbi pharetra congue sodales. Nam eget laoreet ipsum. Maecenas egestas non massa et sodales. Donec bibendum dignissim turpis vel consectetur. Curabitur orci enim, ultrices et pretium in, finibus quis magna. Proin rhoncus, mi ac hendrerit fringilla, turpis erat blandit nisl, sed iaculis ex lacus quis est. Aliquam varius ex a congue placerat. Aenean augue felis, lobortis euismod interdum eget, fermentum eget libero. Phasellus faucibus euismod consequat.

Pellentesque scelerisque lacus ac nibh suscipit bibendum. Quisque suscipit ante non elit laoreet, eget tempor dui vulputate. Proin pretium dui sapien, eu maximus urna bibendum posuere. Duis ullamcorper, lacus vel malesuada convallis, tellus lectus eleifend lectus, in pharetra ligula mi ut nunc. Maecenas rhoncus blandit ultrices. Aenean vel iaculis lectus, dignissim vestibulum massa. Aenean at nisl sed purus bibendum sollicitudin volutpat a libero. Nullam condimentum velit justo, sit amet dapibus elit aliquet a. Integer tristique felis ut vulputate feugiat. Phasellus sollicitudin et eros id lobortis. Sed sollicitudin tempor mi, eu sagittis ante interdum non. Phasellus posuere vitae eros nec tempus. Nulla facilisi.

Maecenas maximus aliquet tincidunt. Vivamus ultricies magna in semper placerat. Integer placerat congue enim ut euismod. Proin tristique, quam id maximus placerat, neque metus sollicitudin diam, pretium mollis neque arcu id lorem. Aliquam quis metus tellus. Nam non dignissim turpis. Sed venenatis a felis eu imperdiet. Fusce id metus dui.

Etiam placerat sem a nisi tincidunt accumsan nec sed turpis. Fusce maximus sem auctor semper fringilla. Nam faucibus tortor sapien, gravida auctor velit blandit ut. Sed eu urna arcu. Sed congue, lorem et pharetra ultricies, elit nisi ullamcorper enim, sed tincidunt eros nisl at orci. Suspendisse porta ullamcorper sapien sagittis molestie. Phasellus non leo fringilla, bibendum tortor sit amet, volutpat orci. Aenean facilisis erat et neque tincidunt mollis.

 

You have Successfully Subscribed!