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Misamis University

Ozamis City

College of engineering and technology

NEW TECHNOLOGY IN REINFORCED CONCRETE

A Requirement in REINFORCED CONCRETE

BORNALES, MARK G.

STUDENT

ENGR. MHARIE BIE TUBONGBANUA

INSTRUCTOR

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Polyaspartic Coating Technology

The chemistry of polyaspartic coatings was first introduced in the early 1990s. It is based on the reaction

of an aliphatic polyisocyanate and a polyaspartic ester, which is an aliphatic diamine. This technology was

initially used in conventional two-component polyurethane solvent-borne coating formulations because the

polyaspartic esters are excellent reactive diluents for high solids polyurethane coatings.

More recent developments in polyaspartic coating technology have concentrated on achieving low or near-zero

VOC coatings where the polyaspartic ester is the main component of the co-reactant for reaction with apolyisocyanate. The unique and adjustable reactivity of the polyaspartic esters allows for the design of fast-curing coatings tailored to the needs of the application. The fast curing feature of these coatings can provide

significant, money-saving productivity improvements, along with high-build, low-temperature curing, and

abrasion and corrosion resistance.

The name polyaspartics has recently become popular among formulators in the industry due to the need to

differentiate it from polyureas and polyurethanes. By definition, a polyaspartic is an aliphatic polyurea becauseit is the reaction of an aliphatic polyisocyanate with a polyaspartic ester - which is an aliphatic diamine.However, polyaspartic coatings are very different in both application and coating performance properties from

conventional polyureas. For example, polyaspartics allow the formulator to control the rate of reaction and cure,

thus, potlife of the two-component mixture can range from five minutes to two hours. While spray applicationtechniques include the use of plural component spray equipment, many applications can be applied with

conventional sprayers, making application much less complicated and less prone to error.

Polyaspartic technology is closer in its applications and performance characteristics to 2-component aliphatic

polyurethane coatings. It is often used as a topcoat due to its non-yellowing nature. But, here too, there are

noteworthy differences. The polyaspartic coatings, for example, can be formulated to very high solids (70-100%solids) and applied at higher film builds (up to 15 mils WFT in a single coat) than typical two-component

aliphatic polyurethanes. Because polyaspartics are much faster drying than typical aliphatic polyurethanes, they

are often used in applications where fast cure means improved productivity in the painting operation

Supercap System

The LATICRETE SUPERCAP Systemis a time-saving, cost-effective method in finishing new

concrete or capping existing slabs. This proven lean tool provides benefits right from the start of concrete

placement in division 3 and flows through to division 9. It's what gives LATICRETE SUPERCAP the

confidence to say, "We Own The Floor".

The LATICRETE SUPERCAP System combines a LEED contributing, GREENGUARD certified, low alkali,

self leveling cement-based technology with a computer controlled mobile blending unit (the pump truck).

This revolutionary system benefits the entire project from design to completion by providing predicable results

that save time, money, and improve overall quality. We call it .... The Next Generation Slab.

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ThermaEZE thermal insulation

Works with poured concrete wallsincluding foundation wallsfor better insulation than conventional

poured concrete, according to the manufacturer. The system consists of panels of expanded polystyrene foam,

placed within the wall forms before the pour and held in place by a patented web structure that becomes

embedded in the concrete. The resulting walls thus consist of a concrete layer and an attached insulation panel,

with fastening strips on the exposed face to facilitate application of drywall or other finish materials. Depending

on the thickness of the concrete, R-values range from 9.6 to 11.7. Panels are termite-resistant, odor-free, and

contain no CFCs, HCFCs, HFCs, or formaldehyde. The UL-approved system is IECC code-compliant for

foundation walls, and meets ASTM C578 Type 1 and ICC-ES EG239 requirements for below-grade use. North

American Specialty Products

Green Sense optimization service

One World Trade Center in New York City was designed to be an example of sustainability. The Port

Authority of New York/New Jersey imposed strict requirements, including replacing a high percentage ofportland cement with recycled materials. BASF Construction ChemicalsGreen Sense optimization

service helped the Building Team, including concrete contractor Collavino Construction and concrete producer

Eastern Concrete Materials, create mixes with appropriate compressive strength for the 1,776-foot skyscraper.

The mix replaced 71% of the portland cement that would have been required in a conventional mix with

recycled materials, non-cementitious fillers, and specialized admixtures to exceed performance targets specified

by the stakeholders. The first 40 floors required 38,000 cubic yards of a special mix, providing compressive

strength of at least 12,000 psi. BASF estimates that 25.4 million in kWh savings will be produced over the

projects life cycle in connection with the mix, as well as reductions in fossil fuel and greenhouse gasproduction, rain acidification potential, water, and solid waste. BASF Corporation

Tradical Hemcrete

developed in the U.K. by Lime Technology, incorporates hemp shiv (the woody core of industrial hemp) and a

lime-based binder, Tradical HB. The resulting composite exhibits good thermal insulation and excellent thermal

inertia, according to the manufacturer, creating environments that need minimal heating or cooling. The

material has negative embodied carbon because CO2 that is captured by hemp as it grows is ultimately

sequestered within the Hemcrete. Several design and construction methods are appropriate, including direct

application to timber-framed structures and use with a rainscreen system. Because proper on-site drying can be

tricky, the company recently developed systems that incorporate the material in factory-made panels, including

Hembuild (for low-rise buildings) and Hemclad (for large-scale buildings with a primary structural

frame). American Lime Technology

http://www.naspecialtyproducts.com/_filelib/FileCabinet/ThermaEZ____TRoc/ThermaEZE_General_Brochure_40-96-02D.pdfhttp://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.americanlimetechnology.com/tradical-hemcrete/http://www.americanlimetechnology.com/tradical-hemcrete/http://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.basf-admixtures.com/en/products/greensense/Pages/default.aspxhttp://www.naspecialtyproducts.com/_filelib/FileCabinet/ThermaEZ____TRoc/ThermaEZE_General_Brochure_40-96-02D.pdf

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Rapid-curing polyaspartic coatings

using raw materials from Bayer MaterialScience are designed for faster productivity without sacrificing high

performance or durability. Usable for both metal and concrete surfaces, the coatings resist damage from

ultraviolet light, chemical spills, and abrasion. They have ultra-low VOC emissions and high color stability andcleanability, according to the manufacturer. Formulations offer a fast curing time, with a typical start-to-finish

cycle that fits within an eight-hour work day. Coatings made with polyaspartic esters can be applied at

temperatures below 50F and in high-humidity environments, extending the application season. The coatings

can be applied over stains for attractive effects. Appropriate commercial projects include hotels, restaurants,

retail space, healthcare, and other facilities with concrete floors. Bayer MaterialScience

BoralPure Smog-Eating Tile

ecipient ofPopular Mechanics Breakthrough Award, removes nitrogen oxides from the atmosphere to improve

environmental quality. The tiles include the photocatalyst titanium dioxide, which oxidizes with vehicle-emittedNOx and removes it from the atmosphere. The benign precipitate resulting from the chemical reaction washes

away in the rain. The technology also uses naturally occurring UV light to help break down organic substances

that can occur on roofs, such as mold and algae. Additional benefits cited by the manufacturer include high

thermal mass, emissivity, and reflectivity, and an insulating air space between the tile and the roof deck. At the

end of their service life, the tiles can be recycled for new structures or roadways. Boral Roofing

ProSpec Level Set Epoxy Primer

uburn Universitys Jordan-Hare stadium, home of the football Tigers, needed repairs recently when settling of

precast concrete risers caused cyclical flooding. Water pooled on the floors of the risers every time it rained,

increasing the risk of concrete damage and forcing fans to cope with the puddles. Contractor Southeast

Restoration & Fireproofing appliedProSpec Level Set Epoxy Primer with sand broadcast to address the water

problem in hard-to-bond areas where the existing coating could not be removed. This created a strong bonding

surface for a mix of ProSpec Vinyl Concrete Patch and B-730 Mortar/Acrylic Additive. The product was

feather-edge sloped over the concrete flooring to fill in areas where pooling had typically occurred. The fix will

help improve the longevity of the stadium and keep patrons feet drier during games.ProSpec / Bonsal

American

PROSOCOs Consolideck line

designed to improve the density and surface appearance of concrete. Consolideck LS features a lower viscosityand more highly reactive silicates than conventional sodium or potassium silicate hardeners. These

characteristics help the formula penetrate more deeply into the surface. Higher reactivity aids hardening without

the aggressive scrubbing and rinsing needed with conventional hardeners, according to the manufacturer.

Consolideck LSGuard is a high-gloss sealer, hardener, and densifier that further increases sheen, hardness, and

stain resistance of floors treated with Consolideck LS. It produces a high-gloss finish that maximizes light

reflectance, eliminating the need for floor waxes, liquid polishers, and conventional resin

coatings. PROSOCO(Image: Chris Robertson Photography)

http://www.bayermaterialsciencenafta.com/processing/cas/polyaspartic/definition.htmlhttp://www.boralna.com/rooftiles/smog-eating-tile.asphttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.prosoco.com/Content/Documents/General/714a8fe4-325c-4ee2-a0fe-39412e638b2d.pdfhttp://www.prosoco.com/Content/Documents/General/714a8fe4-325c-4ee2-a0fe-39412e638b2d.pdfhttp://www.prosoco.com/Content/Documents/General/714a8fe4-325c-4ee2-a0fe-39412e638b2d.pdfhttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.prospec.com/product-details/levelsetepoxyprimerhttp://www.boralna.com/rooftiles/smog-eating-tile.asphttp://www.bayermaterialsciencenafta.com/processing/cas/polyaspartic/definition.html