Characterization and hardening of concrete with ultrasonic testing

被引:74
作者
del Río, LM
Jiménez, A
López, F
Rosa, FJ
Rufo, MM
Paniagua, JM
机构
[1] Univ Extremadura, Dept Fis, Escuela Politecn, Caceres 10071, Spain
[2] Univ Extremadura, Dept Tecn Medios & Elementos Construcc, Escuela Politecn, Caceres 10071, Spain
关键词
compressive strength; concrete; hardening; NDT; ultrasonic velocity;
D O I
10.1016/j.ultras.2004.01.053
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
In this study, we describe a technique which can be used to characterize some relevant properties of 26 cylindrical samples (15x30 cm(2)) of concrete. The characterization has been performed, according to Spanish regulations in force, by some destructive and ultrasound-based techniques using frequencies of 40 kHz. Samples were manufactured using different water/cement ratios (w/c), ranging from 0.48 to 0.80, in order to simulate different values of compressive strength at each sample. We have correlated the propagation velocity nu of ultrasonic waves through the samples to compressive strength R values. As some other authors remark, there exists an exponential relationship between the two above parameters. We have found that a highly linear relationship is present between R and w/c concentration at the samples. Nevertheless, when the same linear model is adopted to describe the relationship between nu and w/c, the value of r decreases significantly. Thus, we have performed a multiple regression analysis which takes into account the impact of different concrete constituents (water, cement, sand, etc.) on ultrasound propagation speed. One of the most relevant practical issues addressed in our study is the estimation of the hardening curve of concrete, which can be used to quantify the viability of applying the proposed method in a real scenario. Subsequently, we also show a detailed analysis of the temporal evolution of upsilon and R through 61 days, beginning at the date where the samples were manufactured. After analyzing both parameters separately, a double reciprocal relationship is deduced. Using the above parameters, we develop an NDE-based model which can be used to estimate hardening time of concrete samples. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:527 / 530
页数:4
相关论文
共 9 条
[1]  
[Anonymous], 1986, 8330886 UNE
[2]   Three-way ANOVA interaction analysis and ultrasonic testing to evaluate air lime mortars used in cultural heritage conservation projects [J].
Cazalla, O ;
Sebastián, E ;
Cultrone, G ;
Nechar, M ;
Bagur, MG .
CEMENT AND CONCRETE RESEARCH, 1999, 29 (11) :1749-1752
[3]  
DREUX G, 1981, GUIA PRACTICA HORNIG, P74
[4]   Application of micromechanics to the characterization of mortar by ultrasound [J].
Hernández, MG ;
Anaya, JJ ;
Izquierdo, MAG ;
Ullate, LG .
ULTRASONICS, 2002, 40 (1-8) :217-221
[5]  
KREIJGER PC, 1961, BI6154911 TNO I
[6]  
MASSART DL, 1988, CHEMOMETRIC TXB
[7]  
*UNE, 1984, 8330484 UNE
[8]  
*UNE, 1991, 8330191 UNE
[9]  
ZEZZA U, 1990, ADV WORKSHOP ANALYTI