Detection of Small Voids by Impact-Echo and Signal Processing
The Impact-Echo method was used to detect slab thickness, presence of small voids and reinforcement locations in a concrete slab. Studying the frequency response of the slab, it is possible...

Evaluation of High Strength Concrete by the Break-Off Method
The reliability of the Break-Off method to test inplace high-strength concrete is investigated. A total of 188 Break-Off tests and 30 standard cylinder tests are carried out for this project....

Cambering of Steel Beams
Cold cambering with force in the fabrication shop is an effective and economical method of compensating for deflections of composite beams. Typical beams should be cambered for dead load...

Polypropylene FRC In Steel Deck Composite Slabs
Engineers, testing laboratories, universities and metal deck manufacturers have studied polypropylene fiber reinforced concrete (FRC) and compared the results with similar slabs reinforced...

Testing of Reinforced Concrete Bridges for External Reinforcement
Several continuous reinforced concrete slab bridges were constructed in the 1950's with spans ranging from 30 ft. to 60 ft. Longitudinal cracks were observed in the tension...

Early Opening of Concrete Pavements to Traffic
Current practice for opening slab replacements and full-depth repairs to traffic ranges widely from 2 hours to several days. A rational and simple procedure is urgently needed for determining...

Concrete Bridges — State-of-the-Art
The paper reviews the types of concrete bridge decks in most common use today, with particular emphasis on recent developments. Current trends in substructures and foundations are also...

Application Examples of FEM to Concrete Structures
The paper illustrates the practical application of the FEM by means of examples for plain/reinforced/prestressed concrete structures. These examples, including both global and local analyses...

Structural Resistance of Slabs for Blast Loading
Results from a series of static tests on one-way reinforced concrete slabs are summarized. The slabs were loaded with a uniform pressure and tested to large deflections. Parameters varied...

Reevaluation of Reinforced Concrete Slabs Subjected to Blast Effects
Failures in reinforced concrete shallow-buried structures subjected to the effects of severe dynamic loads are reevaluated by employing a modified Timoshenko beam formulation which includes...

Technical Issues Related to Emission Releases from Subslab Radon Mitigation Systems
Surveys of government and private sector radon mitigation activities indicate that subslab radon mitigation systems account for more than 50 percent of all installed systems. Such systems...

Estimating Soil Gas Flow Rates and Identifying Entry Routes in a Dwelling Using Multiple Perfluorocarbon Tracers
Passive monitoring of indoor air and below basement floor (subslab) soil gas for radon and perfluorocarbon tracer (PFT) gas concentration was conducted to investigate the influence of...

Beam-Supported Slabs Subject to Edge Loading
A model is presented which allows a designer to estimate stiffnesses required to provide a given critical buckling load in beam-supported slabs subjected to biaxial edge loading, such...

RCC Storage Pads at Tooele Army Depot, Utah
Two 30. 5 m (100 foot) by 91. 4 m (300 foot) ammunition storage pads, each 381 mm (15 inches) thick, were constructed by the Sacramento District of the U. S. Army Corps of Engineers in...

Bearing Capacity and Settlement Characteristics of GEOWEB-Reinforced Earth Slabs

Highlights of New ASCE Standard on Composite Slabs

Recent and Proposed Developments to BS 5400: Part 5— Code of Practice for Design of Composite Bridges

A Light Gauge Structural Panel for Composite Flooring

Creep in Precast Concrete Composite Girders

Semi-Rigid Composite Construction

 

 

 

 

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