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Laser system for testing early shrinkage of concrete elements in conjuction with the deterioration of the setting time

机译:激光系统,用于测试混凝土构件的早期收缩以及凝固时间的延长

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摘要

The paper presents a method for testing the shrinkage of concrete beams with dimensions of 10x10x50cm. Measurements followed from setting into the form until 24 hours after setting. It was used modified TLS system, which originally was meant for the determination of changes in the length of thin-mortar. Simultanously measured were the changes of speed propagation of sound waves by Vikasonic, what allows to specify the setting time of binders. It could be a base for determining the scratch resistance of the concrete in the first 24 hours after casting.
机译:本文提出了一种测试尺寸为10x10x50cm的混凝土梁收缩率的方法。从设置表格到设置后24小时,再进行测量。它使用改良的TLS系统,最初是用于确定薄砂浆长度变化的。同时测量的是Vikasonic声波传播速度的变化,这可以指定粘合剂的凝固时间。它可以作为确定浇铸后最初24小时内混凝土抗划伤性的基础。

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