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What if we found shear slump instead of true one? Should we reject the materials or we have any remedies?

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Question added by Iftikhar Hussain , Project Civil Engineer , Strong Worth LTD. Business Development Associate
Date Posted: 2015/10/17
Praful Naicken
by Praful Naicken , Projects Manager , Verdi Alliance Group of Companies

SHEAR Slump values should never ever be taken for any purposes. A fresh sample has to be tested.

Adesoji Adewumi
by Adesoji Adewumi , Sales Executive , Globacom

If it is possible to get true one in another location, then it is advisable to reject the materials, but if not it's better to go for remedy by thorough washing which requires more time as well as adding more additives to increase cohesion

Sarmad Ali
by Sarmad Ali , Project Engineer , MITTAL Contracting LLC

we will re test for slum if again same then reject

Joem Mendoza
by Joem Mendoza , QA/QC Engineer/ Materials Engineer , Manila North Tollways Corporation/NLEX Corporation

Slump can affect the workability, strength and durability of concrete. Some remedies like adding water can be done as long as it is within the specifications.

Theo Bester
by Theo Bester , Construction Manager , Exxaro

Shear slump indicates that the concrete lacks cohesion. It may undergo segregation and bleeding and thus is undesirable for the durability of concrete. Test materials and use of possible additives.

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