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Early Age Shrinkage and Cracking Potential
Name: Early Age Shrinkage and Cracking Potential
File: Weiss Presentation Final 05-09-12.pdf
Size(MB): 2.38MB
Extension: PDF
Event: 2012 ICSC - SEATTLE
Speaker Name: Weiss, J.
Managed by: sdickens
Date Uploaded: June 6, 2012; 8:01 am
Download Count: 626
Downloads This Month: 626

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Area Code: 0
Your IP: 3.226.251.205



Description:
Recently there has been substantial interest in using ground limestone in cement at levels of up to 15% to improve the sustainability of cement manufacturing. Frequently, these portland limestone cements (PLC) are ground finer to provide comparable performance with ordinary portland cements (OPC). The resulting particle packing from the fine grinding leaves smaller pores. There is a question as to whether the finer nature of these materials results in them having a higher shrinkage and higher potential for cracking. This presentation reports results of a study that assessed the shrinkage and cracking performance of three mortar systems: 1) an OPC, 2) a PLC containing interground limestone, and 3) a PLC-slag blend (interground limestone and blast furnace slag) at a water to powder ratio of 0.39.

 
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