NDE ultrasonic methods to characterise the porosity of mortar
NDE ultrasonic methods to characterise the porosity of mortar
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DOI：
10.1016/s0963-8695(01)00020-2
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发表时间：
2001-12-01
影响因子：
4.2
通讯作者：
Izquierdo, MAG
中科院分区：
文献类型：
--
作者：
Vergara, L;Miralles, R;Izquierdo, MAG
由于环境作用，砂浆和混凝土结构的过早损坏需要评估这类部件的耐久性。砂浆或混凝土成分（如粒度、砂的类型和百分比）可能对耐久性有一定影响，但主要与孔隙率有关，孔隙率决定了侵蚀剂与材料之间的相互作用。本文介绍并评价了几种用于砂浆孔隙度估算的DDE超声方法。在这些方法中，孔隙率与(1)材料结构噪声、(2)声速和(3)超声衰减有关。在所有这些方法中，砂浆被认为只由两个阶段形成：固体和孔隙。2001爱思唯尔科学有限公司版权所有。
Premature damage of mortar and concrete structures, due to environmental action, demands procedures to estimate durability of this type of components. Mortar or concrete composition (e.g. grain size, type and percentage of sand) may have some influence in the durability, but it is mainly related to porosity, which determines the interaction between aggressive agents and material. In this work, several DDE ultrasonic methods to estimate porosity of mortar are presented and evaluated. In these methods, porosity is related to (1) the material structural noise, (2) sound velocity and (3) ultrasonic attenuation. In all these methods, mortar is consider to be formed by only two phases: solid and pores. (C) 2001 Elsevier Science Ltd. All rights reserved.