2 edition of Studies of bond between concrete and steel and related factors found in the catalog.
Studies of bond between concrete and steel and related factors
Carl A. Menzel
by Portland Cement Association, Research and Development Laboratories in Chicago
Written in English
Fifth paper also by William M. Woods.
|Statement||by Carl A. Menzel.|
|Contributions||Woods, William M., Portland Cement Association. Research and Development Laboratories.|
|The Physical Object|
|Pagination||284 p. in various pagings :|
|Number of Pages||284|
Breccolotti and Materazzi used mixes with 0%, 50%, % of recycled coarse aggregates to study the bond between the steel and concrete by pull out tests. Their test results showed that the normalized bond strength is only slightly affected by the replacement of normal aggregate with recycled aggregates. Experimental studies on corrugated steel-concrete composite slab. Composite deck slabs are composed of normal concrete and corrugated steel. sheet. The strength of composite slabs is governed by shear interaction between the concrete and the steel deck. This interaction depends on several factors and.
Adequate bond between concrete and steel bar is essential for the performance and durability of RC structures. During the long term service life of RC structures the deterioration of bond often takes place. Due to the chloride contamination or carbonation the steel bar embedded in the concrete can corrode. Bond between Concrete and Steel – To increase the bond, projections called deformations are rolled on the bar surface as shown in Fig. 1. Reinforcing Bars (rebars) – The specifications for steel reinforcement published by the American Society for Testing and Materials (ASTM) are generally accepted for steel used in reinforced concrete.
a preliminary experimental study on the bond characteristics between concrete and the reinforcing bar. Tests were performed to verify the performance of steel and GFRP reinforcements taking the compressive strength of concrete and the bond length as test variables. For the steel rebar, tensile failure of the reinforcement occurred. The influence of corrosion on bond between the reinforcing steel and concrete was studied using a preliminary series of tests on 14 tension specimens, each mm in diameter and 1 m long, and reinforced with one No. 20 bar. The specimens were subjected to accelerated corrosion by immersion in a 5% NaCl solution and subjected to a voltage of 5 v.
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Some factors influencing results of pull-out bond testsA proposed standard deformed bar for reinforcing concreteSome factors influencing the strength of concrete containing admixtures of powdered aluminumEffect of settlement of concrete on results of pull-out bond testsAn investigaiton of bond, anchorage and related factors in.
The study on bond properties between prestressing steel and bitumen-based materials is of importance for post-tensioning structures grouted with bitumen-based materials.
A bond. CONCLUSIONS 20 VII. REFERENCES 21 Helot A STUDY OP BON]) STRESS BETWEEN CONCRETE AND STEEL by Cheng-Yee Wang 1 SYNOPSIS The bond strength between concrete and steel is an im- portant factor from which to determine a sound design for the reinforced concrete.
This problem was introduced as early as by Mr. Thaddeus. The evaluation of bond between steel and concrete, but also for the development of alkali-activated or hybrid cement based steel-fibre concretes .
The. In this study, the transfer of bond stress in concrete surrounding the reinforcing steel is thoroughly analyzed experimentally and on the Finite Element (FE) platform of ANSYS The surface roughness of NSC substrate is one of main factors affecting the interfacial bond between concrete substrate and repair material [34, 35].
In this study, the effect of five types of. greatly enhance the steel concrete bond capacity. Three main components determine the bond strength between the adjacent ribs of a reinforcement bar.
The three main reasons which will contribute the bond strength between the adjacent ri bs of a reinforcement bar are shear stresses due to adhesion along the bar surface, the bearing stresses.
bond linking concrete and steel when the structural member is loaded. The behaviour of reinforced concrete elements depends on the steel-concrete bond, and the strength capacity of these elements is directly related with the bond.
For a reinforced concrete member to act as designed there must be no slipping between. If corrosion is allowed to propagate over a sufficiently long period of time and proper interventions are not made, loss of the bond between the corroded steel bar and the surrounding contaminated concrete may also lead to impaired structural performance and safety of the affected structures.
Paragraph "Concrete Foundation (Tremie) Seal" states that "the allowable service load bond stress between the steel pile and the seal concrete should be taken as kPa" (kPa = 36 PSI) Here is the link.
The bond resistance in reinforced concrete is obtained by following mechanisms: Chemical adhesion: It is due to gum like property of the substances, formed after setting of concrete.
Frictional resistance: It is due to friction between steel and concrete. Gripping action: It is due to gripping of steel by the concrete on drying.
Mechanical. CONCRETE-STEEL BOND MODEL Introduction The utility of reinforced concrete as a structural material is derived from the combi-nation of concrete that is strong and relatively durable in compression with reinforcing steel that is strong and ductile in tension.
Maintaining composite action requires transfer of load between the concrete and steel. The bond between hybrid cement based concrete and steel is very hard to evaluate. The results are important not only for the evaluation of bond between steel and concrete, but also for the development of alkali-activated or hybrid cement based steel-fibre concretes.
Â© The Authors. An investigation was conducted to determine the bond strength between reinforcing steel and concrete loaded at early ages. Bond tests were conducted using a. The bond between reinforcing steel and the surrounding concrete can be deteriorated by corrosion.
Pullout tests were carried out to evaluate the effects of corrosion on bond and bond–slip behavior, for a series of specimens with varying reinforcement corrosion levels between 0% and 9%, and for specimens with and without stirrups that provide. examined. The compressive strength of the concrete was kept constant throughout the study.
Factors that cause the bond strength to be lower include; reduction in cover depth, increasing bar diameter and location near the top of a section. Comparisons were drawn between the design bond stress used for. Highlights A mechanical model of bonding at elevated temperatures is proposed. The relationship between the bond strength and the crack radius is established.
Parametric studies are conducted and compared with the previous studies. If the concrete cover is small, the strength of the previous studies may be unconservative.
The computed strength degradation can be used as a guideline for bond. Steel fiber reinforced concrete is a composite, whose usage improves the ductility of the concrete.
When the steel fiber reinforced concrete is used as a repairing material on an old concrete, bond between the old concrete and repairing material assumes importance. In this investigation an attempt has been made to study the bond. This numerical method is based on the slip and the bond stress distributions through the anchored length of the bar in the concrete block.
The work refers, especially to the implementation of reinforcing bars and bond-slip models between steel and concrete in the developed finite element program. A critical professional question which may arise with the commercial availability of expanding concrete concerns the ability to reinforce the concrete with steel bars.
In particular the bond phenomena are open to conjecture. These phenomena are studied here by means of tests which have previously indicated the characteristics of bond failure in. The bond ensures that there is little or no slip of the steel bars relative to the concrete and the means by which stress is transferred across the steel-concrete.
Bond resistance is made up of chemical adhesion, friction and mechanical interlock between the bar and surrounding concrete. A loss of bond between the concrete and reinforcement.
I have a " sched 40 pipe embedded into the ground 6'-0" and a 12" diameter concrete collar poured around it at the surface (12" deep) I'm trying to figure out what the bond strength is between the steel pipe and the concrete for vertical force resistance. Bond Between Steel and Steel Fiber-Reinforced Concrete Under Normal and Elevated Temperature.
by Akanshu Sharma. Bond Strength of Diaphragm—Shotcrete Interface in Vertical Direction for AWWA D, Type III Tanks. by Sanjay S. Mehta. Bond-slip Behavior Between Geopolymer Concrete and Deformed Steel Bar. by Maria Antonietta Aiello.