Abstract

Concrete is by far the most widely used construction material now today. Foamed
concrete is light building material with good strength as well as low thermal
conductivity and easy workability; it is produced by either Mix Foam Method or Preformed
Foam Method.
Ultrasonic Pulse Velocity(UPV) is a non destructive technique involve measuring
the speed of sound through concrete in order to predict concrete strength and to detect
the presence of cracking, voids, decay and other damages.
This research includes three main experimental stages:-
The first stage includes the production of foamed concrete and it was divided into
two parts, the first part, mixing design(determination the proportions of the raw
materials) was presented in the second part, the mixing procedure has been illustrated.
The second stage includes preparation of samples,(i.e. molding, finishing surface,
removal from molds, and curing).
The third stage includes several teste to estimate properties the final product and
factors influencing them, these properties include density, compressive strength, and
the ultrasonic pulse velocity.
From the experimental work and at the same test's age, the compressive strength
and the ultrasonic pulse velocity for foamed concrete with 800 kg/m3 density were
respectively (2.38 MPa,1.56 km/s)and the compressive strength and the ultrasonic
pulse velocity for foamed concrete with 1200 kg/m3 density were respectively (3.7
MPa,1.96 km/s) while it were (7.8 MPa and 2.12 km/s) for foamed concrete with
1600 kg/m3 density