Abstract

In the present paper the errors in compressive strength estimation when the ultrasonic method is applied to conventional and recycled concretes are evaluated. Tests were performed on laboratory prototypes made with conventional concretes containing natural coarse aggregates and on recycled concretes containing 75% of recycled coarse aggregates (crushed concretes) by volume. In both types of concrete the strength was estimated by employing previously obtained correlation equations between the ultrasonic pulse velocity and compressive strength measured on concretes made with the same materials. The results from both types of concrete indicate that the errors in the estimated strength can be considered technologically acceptable.

References

1.
Khan
,
R.
and
Khan
,
A.
, “
Recycled Concrete — A Source for New Aggregate
,”
Cement, Concrete, and Aggregates
, Vol.
6
, No. 1,
ASTM International
,
West Conshohocken, PA
,
1984
, pp.
17
-
27
.
2.
Buyle-Bodin
,
F.
and
Hadjieva-Zaharieva
,
R.
, “
Influence of Industrially Produced Recycled Aggregates on flow Properties of Concrete
,”
Materials and Structures
, Vol.
35
,
France
,
2002
, pp.
504
-
509
.
3.
Gómez-Soberón
,
J. M. V.
, “
Porosity of Recycled Concrete with Substitution of Recycled Concrete Aggregate — An Experimental Study
,”
Cement and Concrete Research
,
32
,
USA
,
2002
, pp.
1301
-
1311
.
4.
Grübl
,
P.
and
Rühl
,
M.
, “
Sustainable Construction: Use of Recycled Concrete Aggregates
,”
German Committee for Reinforced Concrete (DafStb) — Code: Concrete with Recycled Aggregates
,
Proc. Int. Symposium University of Dundee
,
London
,
1998
.
5.
Di Maio
,
A. A.
,
Traversa
,
L.
, and
Giovambattista
,
A.
, “
Non-Destructive Combined Methods Applied to Structural Concrete Members
,”
Cement, Concrete, and Aggregates
, Vol.
7
, No. 2,
ASTM International
,
West Conshohocken, PA
,
1985
, pp.
89
-
94
.
6.
Di Maio
,
A. A.
,
Giaccio
,
G.
, and
Zerbino
,
R.
, “
Hormigones con Agregados Reciclados
,”
Ciencia y Tecnologia del Hormigón
, No.
9
,
Argentina
,
2002
, pp.
5
-
10
. (Only available in Spanish).
7.
ACI 318,
1995
,
Building Code Requirements for Structural Concrete
,
Portland Cement Association
,
USA
.
8.
CIRSOC 201, “
Reglamento Argentino de Estructuras de Hormigón
,”
Instituto Nacional de Tecnología Industrial
,
Argentina
,
2002
.
9.
Di Maio
,
A. A.
,
Traversa
,
L.
, “
Evaluation of Recycled Concrete by Means of Non Destructive Tests
,”
Materiales de Construcción
, Vol.
53
, Nos. 271-272,
España
,
2003
, pp.
37
-
46
.
This content is only available via PDF.
You do not currently have access to this content.