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Influence of precast concrete panel surface condition on

Influence of precast concrete panel surface condition on

Influence of precast concrete panel surface condition on ...

The surface condition of the PCP was specified to have a “broom finish” and the panel was to have a saturated surface dry (SSD) condition so that PCP units would not leach moisture from the CIP topping slab. Neither of these conditions was satisfied in the two panels that failed prematurely.

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Copyright By Kristen Shawn Donnelly 2009

Influence of Precast Concrete Panel Surface Condition on Behavior of Composite Bridge Decks at Skewed Expansion Joints Kristen Shawn Donnelly, M.S.E. The University of Texas at Austin, 2009 Supervisor: James O. Jirsa Following development of rectangular prestressed, precast concrete panels

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INFLUENCE OF VISUAL CONDITION ON RESIDUAL FLEXURAL ...

This paper reports an experimental study of 14 precast non-prestressed concrete ribbed panels of mark PKZH-2 and 32 prestressed concrete panels of mark PNS-3, PNS-12 and PNS-14. The first objective of the research is to find the residual flexural strength of the existing precast concrete ribbed panels.

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ARCHITECTURAL PRECAST CONCRETE WALL PANELS

Precast concrete shear wall panels provide a lateral load-resisting system when combined with the diaphragm action of the floor construction. The effectiveness of precast concrete shear walls is largely dependent on the panel-to-panel connections. In some cases, precast panels are used as formwork for cast-in-place concrete.

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Clay Product-Faced Precast Concrete Panels

product facings may cover the entire exposed panel surface or only part of the concrete face, serving as an accent band. The use of clay product-faced precast concrete panels began in the early to middle 1960s. Examples of two early projects which are in excellent condition today are

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Evaluating and Diagnosing Formed Surface ... - Precast

Additionally, variations with precast product vibration, form stripping time and curing conditions can lead to reduced uniform color conditions on the concrete surface. As described in ACI 309R-05, “The formed concrete finish should be observed when the form is stripped so that appropriate corrective measures can be expeditiously implemented.”

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Designing with Precast and Prestressed Concrete

precast concrete will be used, such as the strong light and shadows of natural daylight. Surface texture influences color. The building’s appearance is a function of the architect’s use of light, shadow, texture, and color. Cement combined with a coloring agent exerts the primary color influence on

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ARCHITECTURAL PRECAST CONCRETE WALL PANELS

Precast concrete shear wall panels provide a lateral load-resisting system when combined with the diaphragm action of the floor construction. The effectiveness of precast concrete shear walls is largely dependent on the panel-to-panel connections. In some cases, precast panels are used as formwork for cast-in-place concrete.

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Design Factors Affecting Aesthetics of - Gate Precast

panel finishes. Precast concrete provides the freedom and flexibility of shaping ... aggregate can influence the color of concrete. A substantial change in aggregate color ... paste may erode from the surface depending on environmental conditions, such as acid .

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INSULATED WALL Precast Concrete

• Precast concrete sandwich wall panels used as an interior surface can save materials by eliminating the need for interior framing and drywall. • The raw materials used in precast concrete manufacturing are generally sourced locally. Precast panels are usually shipped locally as well. • Precast concrete walls can be designed to be

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Numerical and experimental investigation of precast ...

Nov 01, 2019  Thermal and electrical performance of precast concrete façade integrated with photovoltaic is investigated. • The system could generate 62.56 kWh/m 2 and save 64.34 kWh/m 2 electricity every year. • Influence of some key parameters on the performance of precast concrete façade integrated with photovoltaic is analyzed.

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Revised Zone Method R-Value Calculation for Precast ... - PCI

the thermal R-values for precast concrete sandwich wall panels that contain both metal wythe connectors and solid concrete regions. Figure 1. The diagram depicts a typical precast concrete sandwich panel. Note: 3-2-3 is in inches. 1 in. = 25.4 mm; 1 ft = 0.3048 m. Concrete Insulation t 323 12 connector 12 12 Figure 2.

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Types and Causes of Concrete Deterioration

Concrete can deteriorate for a variety of reasons, and concrete damage is often the result of a combination of factors. The following summary discusses potential causes of concrete deterioration and the factors that influence them. CORROSION OF EMBEDDED METALS Fig. 1. Corrosion of reinforcing steel is the most common cause of concrete ...

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Stone Veneer-Faced Precast - Clark Pacific

sections are more economically assembled as veneer units on precast concrete panels (Fig. 1). 3. Precast concrete backup systems permit faster enclosure, allowing earlier work by other trades and subsequent earlier occupancy, because each of the larger panels incorporate a number of veneer pieces. 4. Veneered precast concrete pan-

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Effect of Galvanization on the Fatigue Strength of High ...

May 02, 2011  ← Influence of Precast Concrete Panel Surface Condition on Behavior of Composite Bridge Decks at Skewed Expansion Joints (2009) NEW LABORATORY TEST PROCEDURE FOR THE ENHANCED CALIBRATION OF CONSTITUTIVE MODELS (2006) →

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Wall Panel Design Data - precast.cn

Total Panel Thickness (including concrete and insulation) 2” 2 1/2” 3” 3 1/2” 4” 10” panel 12.25 14.91 17.58 20.24 12” panel 12.40 15.06 17.73 20.39 23.05 Wall Panel fIre ratIngs Fire endurances of concrete wall panels are governed by the ASTM criteria for temperature rise of the unexposed surface (heat transmission).

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Technical terms to the topic precast concrete elements

Precast concrete walls and floors are produced on beds with a length of 50 to 100 meters and a width of 2.80 meters. The compacting of the concrete is either done by vibrators installed under the beds or by a vibration car pushed under the beds or a vibration arm fastened to the concrete spreader.

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Precast Solutions - Canadian Precast Prestressed Concrete ...

Insulated architectural wall panels contribute substantially to the overall thermal efficiency of a building. Since the thermal resistance of glass is less than that of concrete, reducing window areas minimizes heat gains and losses. In suitable environments, properly designed precast sunscreens help to reduce air conditioning loads.

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(PDF) Service-Life Assessment of Existing Precast Concrete ...

Service-Life Assessment of Existing Precast Concrete Structure Exposed to Severe Marine Conditions. Download. Related Papers. ACI 224R-01 supersedes ACI 224R-90 and became effective. By Durga Panday. 224R 01. By Asad Kadhum. Ultra High Performance Concrete (UHPC) By Hai Hoang Viet.

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Precast concrete - Wikipedia

Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and lifted into place ("tilt up"). In contrast, cast-in-place concrete is poured into site-specific forms and cured on site. Precast stone is distinguished from precast concrete using a fine aggregate in the ...

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Precast Concrete in Winter Conditions Nitterhouse Concrete

Precast concrete is the best all-weather process for architectural wall panels, double T beams, hollow core planks, floor panels, beams and many more applications. You can find precast in parking structures, office buildings , apartment and multi-housing condominium projects, schools, and almost any other large scale project.

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Design Factors Affecting Aesthetics of - Gate Precast

panel finishes. Precast concrete provides the freedom and flexibility of shaping ... aggregate can influence the color of concrete. A substantial change in aggregate color ... paste may erode from the surface depending on environmental conditions, such as acid .

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Precast Concrete in Winter Conditions Nitterhouse Concrete

Precast concrete is the best all-weather process for architectural wall panels, double T beams, hollow core planks, floor panels, beams and many more applications. You can find precast in parking structures, office buildings , apartment and multi-housing condominium projects, schools, and almost any other large scale project.

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Inspection of the Precast Concrete Surface Preparation and ...

Mar 19, 2021  Precast concrete is cleaned and painted for both beautification and protection. Painting may involve the use of protective coatings, stains, or water repellents. For the materials to adhere and provide the desired service life, the quality of surface preparation and application must be assured. This can be accomplished by thoroughly inspecting each phase of the work.

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(PDF) Service-Life Assessment of Existing Precast Concrete ...

Service-Life Assessment of Existing Precast Concrete Structure Exposed to Severe Marine Conditions. Download. Related Papers. ACI 224R-01 supersedes ACI 224R-90 and became effective. By Durga Panday. 224R 01. By Asad Kadhum. Ultra High Performance Concrete (UHPC) By Hai Hoang Viet.

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Stone Veneer-Faced Precast - Clark Pacific

sections are more economically assembled as veneer units on precast concrete panels (Fig. 1). 3. Precast concrete backup systems permit faster enclosure, allowing earlier work by other trades and subsequent earlier occupancy, because each of the larger panels incorporate a number of veneer pieces. 4. Veneered precast concrete pan-

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Designers Notebook - Stone Veneer-Faced Precast part 1

precast concrete panels (Fig. 1). 3. Precast concrete backup systems permit faster enclosure, allowing earlier work by other trades and subsequent earlier occupancy, because each of the larger panels incorporate a number of veneer pieces. 4. Veneered precast concrete panels can be used to span column-to-column, thereby

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SECTION 034500 - PRECAST ARCHITECTURAL CONCRETE

10. Indicate location of each architectural precast concrete unit by same identification mark placed on panel. 11. Indicate relationship of architectural precast concrete units to adjacent materials. 12. Indicate locations, dimensions, and details of thinbrick units, including corner units and -

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Moisture behavior of external insulated precast concrete ...

Jun 16, 2020  In the study with no self-desiccation where a precast sandwich panel was modeled (w/b = 0.5) (Ojanen, 2017), relative humidity remained at a level of over 90%–95% on the exterior surface of the inner concrete panel for over a year, whereas in our measurements, the

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Technical terms to the topic precast concrete elements

Precast concrete walls and floors are produced on beds with a length of 50 to 100 meters and a width of 2.80 meters. The compacting of the concrete is either done by vibrators installed under the beds or by a vibration car pushed under the beds or a vibration arm fastened to the concrete spreader.

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CSE reactive Concrete Surface Deactivator

SE® Deactivator is a range of so-called surface deactivators for the production of exposed and micro- exposed concrete surfaces, e.g. precast architectural concrete wall panels, prefabricated concrete for landscaping/city furniture, GR, cast stone and decorative cast-in-place concrete paving.

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Control of Concrete Cracking in Bridges

Aug 17, 2017  Full-Depth Precast Concrete Panels In the full-depth, precast concrete deck system, panels span across several bridge beams. The panels generally are pretensioned in the transverse direction and may be post-tensioned in the longitudinal direction. Erection of full-depth, full-width, precast concrete panels (ENTRAN PLC and Aspire Magazine)

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GM-1301: High Performing Precast Concrete Building ...

Mar 11, 2013  The appearance and operation of the enclosure has a major influence on the interior environment and on factors such as comfort, energy efficiency, durability, and occupant productivity, satisfaction and health. Figure 1: Attention to detail will ensure precast concrete wall panels provide high-performance enclosures.

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Acceptance of Architectural Precast and Architectural Cast ...

The color of any concrete product can be expected to change to some degree over time. Atmospheric pollution and any accumulated grime or soot will darken the surface. These effects can be controlled by producing well-detailed precast concrete units with high-quality concrete. Just like all material surfaces left in the open, precast concrete

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Chapter Two - Types and Causes of Concrete Cracking in ...

Research is needed to identify the primary factors causing the reflective cracking and ways to reduce or eliminate it. full-depth, Precast concrete Panels In the full-depth, precast concrete deck system, panels span transversely across several bridge beams, as shown in Figure 5. The length of a panel along the roadway is usually 8 to 12 ft.

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