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On Demand

Presenters:
John Zhang
Duration:
45 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
Shotcrete has been used widely for rehabilitation and retrofit of concrete structures. More and more large infrastructures, in particular, in the hydro power industry, is using shotcrete for major rehabilitation and retrofit. Recently, the US Army Corps of Engineers has been engaged in structural modifications to reinforced concrete draft tube exits from the turbines in the Ice Harbor Lock and Dam located on the Snake River, Washington. This presentation details the structural modification to the draft tube which was successfully completed using wet-mix shotcrete.
Price:
$15.00 - $25.00

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On Demand

Presenters:
Farhad Habibi, PhD |  Justin Breg, PhD
Duration:
36 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
Alkali-Silica Reaction (ASR) can cause significant damage to concrete structures including bridges, roadways, airport runways, and nuclear power plants. When reactive aggregates are included in a mix, the presence of moisture initiates a reaction between the alkaline cement paste and reactive amorphous silica. The result is a gel that continues to dilate, which may cause cracks in the concrete mass. A research program was undertaken at the University of Toronto to investigate the effects of ASR on large-scale and small-scale concrete specimens. Several specimens were constructed using reactive (ASR) concrete and non-reactive (regular) concrete, and their short-term and long-term structural and mechanical behavior were compared. In this presentation, we will discuss the results of the research program, will offer best practices to minimize the risk of ASR in concrete during placement, and will propose several strategies for repair of structures that have been degraded due to ASR.
Price:
$15.00 - $25.00

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On Demand

Presenters:
Charles Hanskat, P.E. |  Marcus Von der Hofen
Duration:
1 hour
Format:
Audio and Video
License:
Short Description:
Galvanized corrugated metal and concrete underground culverts are common infrastructure in North American highways and stormwater management. A shotcrete lining is a cost-effective and efficient method to strengthen and significantly extend their useful life.
Price:
$25.00 - $40.00

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On Demand

Presenters:
Rick Edelson, P.E.
Duration:
30 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
The ACI 562-16 Repair Code is primarily intended for the Licensed Design Professional for providing the requirements necessary for assessing and designing repairs and rehabilitation of existing concrete structures.
Price:
$0.00 - Base Price

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On Demand

Presenters:
Keith Kesner, P.E., S.E.
Duration:
39 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
In June 2016, ACI published ACI 562-16,” Code Requirements for Assessment, Repair and Rehabilitation of Existing Concrete Structures and Commentary”. ACI 562-16 replaces ACI 562-13 as a standard for the repair of existing concrete structures. Significant changes to ACI 562-16 include improvements in terminology for consistency with ISO, ASCE and other documents, inclusion of requirements for level of repair based upon extent of damage present, and revisions to the interface bond provisions. The video will describe the concrete repair code, focusing on key changes made to the code and describe how the code is to be used on concrete repair projects.
Price:
$0.00 - Base Price

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On Demand

Presenters:
Kip Gatto, P.E.
Duration:
29 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
This video will illustrate an example of how various sections of ACI 562 are applied in the execution of a complex repair project, the repurposing of a historic train deck into a transportation hub for light rail trains and busses. Methods of evaluation and analysis, as guided by ACI 562, will be presented with a discussion of how these provisions lead to various repair approaches presented to the owner.
Price:
$0.00 - Base Price

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On Demand

Presenters:
Pat Martin, P.E.
Duration:
26 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
This video will discuss how the requirements of ACI 562-16 are used in the evaluation and repair of parking structures. It will take participants through a representative garage project, utilizing Design Example 1 from the Guide to the Use of ACI 562 as the basis. Evaluation and design considerations will be discussed relative to the Repair Code as well as QA/QC and the Engineers' Role during construction.
Price:
$0.00 - Base Price

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Not Found
On Demand

Presenters:
Chuck Larosche, P.E.
Duration:
23 Minutes
Format:
Audio and Video
License:
Access for 6 month(s) after purchase.
Short Description:
This video will illustrate an example of how various sections of ACI 562 are applied in the execution of a Precast/Prestressed Double-Tee repair project. Methods of evaluation and analysis, as guided by ACI 562, will be presented with a discussion of how these provisions can lead to various repair approaches.
Price:
$0.00 - Base Price

Not Found
On Demand

Presenters:
Karl Rickert, P.E.
Duration:
1 Hour, 2 Minutes
Format:
Audio and Video
License:
Short Description:
This webinar will review issues that should be addressed when preparing a specification for concrete repair. ICRI developed an editable specification titled “Guide Specification for Structural Concrete Repairs” that can be used by design professionals. The webinar reviews the specification and discusses decisions that should be considered when developing a concrete repair specification.
Price:
$10.00 - $40.00

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On Demand

Presenters:
Mr. Matthew Sherman
Duration:
1 hour
Format:
Audio and Video
License:
Short Description:
This session will explore the differences between bonded and unbonded topping slabs, discuss materials- and installation-related causes of failures, and provide guidelines to properly implement each type of topping slab.
Price:
$25.00 - $40.00

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