Written in EnglishRead online
|Statement||by James R. Lundy, Suvimol Sujjavanich.|
|Contributions||Sujjavanich, Suvimol., Oregon. Dept. of Transportation. Research Unit., Oregon State University. Dept. of Civil, Construction and Environmental Engineering.|
|The Physical Object|
|Pagination||vi, 18, A-6 p. :|
|Number of Pages||18|
Download Latex and microsilica modified concrete bridge deck overlays in Oregon
Latex and microsilica modified concrete bridge deck overlays in Oregon: Interim report [Lundy, James Ray] on *FREE* shipping on qualifying offers. Latex and microsilica modified concrete bridge deck overlays in Oregon: Interim reportAuthor: James Ray Lundy.
How Latex Modified Concrete Developed. In the s, Dow Chemical developed an overlay material using LMC. Laboratory studies showed potential for the usage of the resulting concrete for bridge decks.
The resulting concrete showed potential to be used in bridge decks when tested a laboratory. Conversely, field testing revealed the conventional delivery systems had underwhelming. LATEX AND MICROSILICA MODIFIED CONCRETE BRIDGE DECK OVERLAYS IN OREGON. INTERIM Latex and microsilica modified concrete bridge deck overlays in Oregon book.
This interim report presents information collected from 24 bridge deck overlays constructed in Oregon between and Decks were placed on a variety of existing structures using hydroblasting, milling and diamond grinding surface by: 5.
Cover deck with plastic to keep clean and to prevent evaporation from occurring. Provide enough people and equipment to do the job right. Through proper bridge deck surface preparation – superior bonding of the overlay will occur – this will lead to the longest lasting Latex Modified Concrete overlays.
Installation of LMC Overlay. latex modified concrete bridge deck overlay standard specifications Description This work shall consist of the final surface preparation and construction of a latex modified concrete (LMC) or very early strength latex modified concrete (VESLMC) overlay, and shall include all labor, materials, and equipment necessary to perform the work in conformity with the plans and specifications.
The three most popular concrete overlay options in the U.S. are latex-modified concrete (LMC), microsilica concrete (MSC) and low-slump concrete (LSC). Latex-modified concrete was developed in the s for bridge deck overlays, and since then o bridges have been successfully rehabilitated.
Buy Latex and microsilica modified concrete bridge deck overlays in Oregon: Interim report by Lundy, James Ray (ISBN:) from Amazon's Book Store. Author: James Ray Lundy. This report summarizes the performance of microsilica concrete (MC) overlays on seven distressed portland cement concrete bridge decks at three sites in Oregon.
This report emphasizes the overlays' condition after four years of use. After four or five years, there was cracking on all seven overlays and delamination on five overlays.
On the two overlays without delaminations, the cracking had not. Lundy J.R. and Sujjavanich S., ―Latex and Microsilica Modified Concrete Bridge Deck Overlays in Oregon,‖ Final Report SPR Project No. Prepared for Oregon Department of Transportation. bridge deck treatments for different deck conditions and deck materials.
The guidelines provided in this report consider current deck conditions and deck materials and provide a means to make general repair.
Latex and microsilica modified concrete bridge deck overlays in Oregon: final report. Published Date: The final report presents information collected by ODOT personnel from bridge deck overlays constructed in Oregon between and Decks were placed on a variety of existing bridge types prepared using hydrodemolition.
Latex and microsilica modified concrete bridge deck overlays in Oregon: final report. Name(s): Lundy, James Ray Sujjavanich, Suvimol Oregon Department of Transportation.
Research Unit United States Federal Highway Administration Oregon State University Department of Civil, Construction, and Environmental Engineering. Abstract. Highway bridge decks are often overlaid to extend service life by reducing the rate of chloride ion ingress and the rate of corrosion of reinforcing steel in the sound chloride-contaminated concrete that is left in-place.
Bridge deck overlays in Virginia are usually either latex-modified concrete or microsilica concrete, and both types of overlay are considered equivalent in terms of performance. Latex modified concrete (LMC) is used for a bridge deck pavement method that was introduced in Korea in the s, and it is currently the concrete pavement method being used for most highway bridges.
It has been recommended that mixing with latex approximately 15% in terms of polymer-cement ratio (P/C ratio) by weight showed no occurrence of cracks with sufficient tensile.
BRIDGE DECK LATEX CONCRETE OVERLAY Effective: Revised: Octo This work shall consist of the preparation of the existing concrete bridge deck and the construction of a latex overlay to the specified thickness. Materials. Materials shall meet the following Articles of Section Item Section (a) Latex/Portland Cement.
Yet, latex modified concrete is a common way to protect the steel through a bridge deck overlay. How Latex Modified Concrete Developed.
In the s, Dow Chemical developed an overlay material using a latex modified concrete. Laboratory studies showed potential for the usage of the resulting concrete for bridge decks.
Bridge Deck Overlays 9/12/ 3 Just Deck Overlays 16 projects $ million 33 projects $ million ranging from 33 projects $ million ranging from $76, to $ million 24 projects $ million Bridge deck overlays may also be a part of other project types like: Bridge Rehabilitation or RepairBridge Rehabilitation or Repair.
Indiana-Purdue University Fort Wayne (IPFW), E Coliseum Blvd, Room # A, Fort Wayne, IN KEYWORDS: Fly Ash, Sustainability, Overlay, Fibers, Bridge Decks ABSTRACT Latex-modified concrete (LMC) and microsilica concrete (MSC) overlays are the two foremost bridge deck concrete overlays used by US transportation agencies.
types of overlays for bridge deck applications, and include: latex modified concrete (LMC), microsilica modified concrete (MMC), microsilica modified concrete with fly-ash (MMC-FA) and polypropylene fiber-reinforced concrete (FRC).
The laboratory mixtures were developed using local aggregates, Type-I cement and commercial admixtures and fibers. An illustration of an open book. Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk.
Investigation on Latex-Modified Bridge Deck Overlay Concrete Item Preview remove-circle Share or Embed This Item.
modified concrete very early strength, LMC-VE, or silica fume modified concrete, SFMC, on an existing or new bridge deck, or it shall consist of patching an existing latex modified portland cement concrete overlay on a bridge deck in accordance with Quality Control.
LMC-VE overlays shall be placed in accordance with the QCP. Latex Modified Concrete (LMC) is considered the “ideal repair material” and is primarily used as a thin bonded overlay to protect bridge decks and parking structures.
As Latex Modified Concrete cures, the polymer forms internal plastic films and provides the following improvements to the concrete surface: Low Permeability. composite materials, since its very first latex-modified con crete (LMC) bridge deck overlay placement in (J). Many PCC composite mix designs-such as low-slump dense con crete (LSDC), superplasticized dense concrete (SDC), and microsilica-modified concrete (MSC)-have been tried with various degrees of success ().
Microsilica modified concrete for bridge deck overlays: Second-year interim report (FHWA experimental features) [Charles P James] on *FREE* shipping on qualifying offers. Placement of latex modified concrete.
Download the brochure. STYROFAN ® STYROFAN is used mainly for modifying concrete mixtures. The most notable applications are concrete for bridge deck and parking garage overlays. The addition of Styrofan to conventional unmodified concrete mixtures reduces the amount of water required for.
Microsilica modified concrete for bridge deck overlays. Name(s): Oregon State Highway Division. Materials and Research Section: Type of Resource: text: Genre: text-txt: Issuance: monographic:.
BRIDGE DECK REPAIR AND OVERLAY WITH CONCRETE USING SCARIFICATION AND CHIPPING AP Description Bridge Decks with No Existing Rigid Concrete Overlay Bridge Decks with an Existing Rigid Concrete Overlay Micro-silica Modified Concrete Materials Latex Modified Concrete Materials.
Marquam Bridge Repair: Latex-Modified Concrete Overlay and Joint Replacement JOHN D. HOWARD The Marguam Bridge in Portland, Oregon, provides a crossing of the Willamette River for the north-south freeway.
After 17 yr of service, the bridge, which was opened to traffic inhad a badly worn deck and numerous deck expansion. Latex Modified Concrete Overlay will be measured and paid for at the Contract unit price per cubic yard for the Latex Modified Concrete Overlay item.
Measurement for the volume of concrete will be based on the meter readings on the mixers dispensing the latex modified concrete excluding the calculated volume of any waste.
Title: Rapid Concrete Bridge Deck Overlays Author(s): M.M. Sprinkel Publication: Symposium Paper Volume: Issue: Appears on pages(s): Keywords: overlays, polymer modified concrete, bridges, decks, latex, silica fume Date: 3/1/ Abstract: Hydraulic cement concrete overlays made with latex-modified concrete (LMC) and silica fume concrete (SFC) are typically used to extend the.
BRIDGE DECK REPAIR AND OVERLAY WITH CONCRETE USING HYDRO-DEMOLITION AP Description Bridge Decks with No Existing Rigid Concrete Overlay Bridge Decks with an Existing Rigid Concrete Overlay Micro-silica Modified Concrete Materials Latex Modified Concrete Materials.
Modified Concrete Suppliers, LLC is approved to supply HP-LMC in the USA. With over years of experience, our knowledgeable and dedicated staff will help you preserve your bridge decks and significantly extend their service life. We have supplied hundreds of thousands of cubic yards of Latex Modified Concrete in over 20 states since our.
to that report, WSDOT used a in (98 mm)-thick modified concrete (either latex or microsilica) as its primary deck overlay, as it considered such overlays more durable than thin polymer.
Steel. Course Aggregate factor of at leastClass of Concrete CO Latex Modified Concrete Overlays – gals/cy of Latex and gals/cy of Water (do not usually need that much water), lb/cy of cement.
Class of Concrete LMC. The microsilica concrete overlay is seen as a possible alternative to the increasingly expensive latex modified concrete. A microsilica modified concrete overlay was placed on Bridge 5/W in Skagit County.
The bridge is a concrete box girder structure with 8, square feet of deck area. The ADT on this bridge is 9, vehicles per day. The minimum overlay thickness was 1½ inches. Wagman Heavy Civil constructed a new Latex Modified Concrete (LMC) overlay on the historic Roebling Bridge in Lackawaxen, PA that connects SR in Pike County, PA to SR 97 in Sullivan County, NY.
The use of latex modified concrete deck overlay systems has become a common practice not only for repairing old bridge overlays but also as a wearing and protective surface of many new bridges in the USA. However, cracks due to diverse reasons have o. BRIDGE DECK MICROSILICA CONCRETE OVERLAY Effective: Revised: March 1, Description.
This work shall consist of the preparation of the existing concrete bridge deck and the construction of a microsilica concrete overlay to the specified thickness. Materials. Concrete rather than asphalt overlays are typically used by the Virginia Department of Transportation (VDOT).
Concrete overlays that have an established history of use and acceptance in Virginia include latex-modified concrete (LMC), first used in (Sprinkel, ), and 7% silica fume. accommodate FRC materials in concrete overlays. Key Words Distribution Statement concrete bridge decks—concrete overlays—fiber-reinforced concrete—FRC deck construction—structural macrofibers No restrictions.
Security Classification (of this report) Security Classification (of this page) No. of Pages Price. The Department routinely rehabilitates concrete bridges decks as part of the Bridge Preservation (P2) Program.
Most P2 deck rehabilitation projects allow the contractor to choose between three different types of modified concrete overlays which include; Latex, Microsilica or Fly-Ash. All of these modified concrete overlays are applied in a. M High Density Concrete Overlay Latex Modified Concrete Overlay M Latex Modified Concrete Overlay Micro-Silica Concrete Overlay M Micro-Silica Concrete Overlay DISAPPROVED SPECIFICATIONS.
The following specifications are superseded and disapproved for use: REINFORCING BAR EXPOSURE. Typical concrete overlay materials include latex-modified concrete, low slump dense concrete, and polyester polymer concrete. However, each of these materials have drawbacks that have lead designers to question the cost effectiveness of using them in overlays.
To increase the service lives of bridge deck overlays, and subsequently the underlying.