Efficient Slurry Management on Large Power Trowel Polishing Job

With the rising trends of wet polishing, due to not only preference but also the new OSHA Silica Standard, and trowel machine polishing, which must be run wet, the need for a streamlined slurry management process is key. While there is no “one answer” for how to most efficiently and economically dispose of slurry, our manufacturers and our own outside sales reps strive to help provide solutions for concrete polishing contractors facing this dilemma. Here’s an example of one customer who teamed up with our rep Mark Critchfield from Slurry Solutions to achieve just that. Read on to see how…

This project involved a 30,000 square-foot warehouse utilizing Runyon’s new MPS Magnetic Preload System, ride-on trowel polishing technology, with very high production rates. Slurry was collected with a floor scrubber and deposited into a low profile slurry containment tray for easy unloading. 1 cup of SlurrySep was then added and mixed with a trash pump until the flocculant is activated. After the particle size was ready, it was then pumped into the big dog slurry bin with a dewatering filter bag mounted inside. As the clean water passed through the filter, it was pumped from the outside of the bag back onto the floor for reuse. This significantly reduced the overall water usage on the project. 6000 square-feet used only 300 gallons of water. If preferred, the slurry can also go directly to solidification and disposal.

Slurry Solutions provides sustainable solutions for job site pollution. Slurry Solutions works hard to bring the concrete industry new ideas, solutions and technology to the age old problem of wastewater treatment and concrete silt management. Slurry Solutions is the market leader for decades in wastewater treatment chemistry; it’s designed to protect the environment and contractors from EPA fines.

Runyon Surface Prep Rental & Supply is a full-service sales and rental facility uniquely dedicated to the concrete polishing industry. Our uniqueness comes from providing our customers with a diverse equipment, product and supply portfolio. We offer training and support, such as technique workshops on prep, polishing or removal, and maintain a well-stocked inventory of consumables ready for your projects at a moment’s notice. Rather than perform contract work ourselves, we consult on job sites when necessary. With the backing of our vendors, Runyon Surface Prep offers support at any level, to assist in helping you get things done. We can deliver or ship wherever you need, or you can pick up from our facility.

Advertisements

RSP Hand Polishing Pads – Making Quick Work of Edges

Runyon Surface Prep’s Hand Polishing Drift Drys and Whip Wets go where larger grinding/polishing equipment cannot go and supply the quality finish level that clients demand.

Edges and Corners – No Match for RSP Hand Polishing Pads

Edge polishing work is always labor consuming and troublesome, but the RSP hand pads, Drifts for dry work, and Whips for wet work, make honing and polishing edges as efficient and economical as possible. Both styles are available in 5” and 7”, so they will fit all popular models of hand grinders and both are available in grits from 50 to 3,000, so you can achieve the desired level of refinement with ease.

Wet, Dry or Both?

With the OSHA silica regulations in full effect, more contractors are electing to work wet, especially in the early grinding and honing stages where the most material is removed from the floor. Wet grinding and honing is also typically more aggressive than dry work at the same grit level. However, dry polishing typically yields higher aesthetic values at the same grit level as compared to wet work, and airborne silica levels can be kept in check with the appropriately sized and maintained dust extraction system. While both methods have their pros and cons, either way one goes, Runyon has their customers covered with the Drift Dry and Whip Wet pads.

Floor Edges Looking a Little Rough?

Do the edges of your latest flooring project have you edgy? Are you not getting the fullest potential out of your hand-held grinder/polisher? It might be the pads you are using. See how our quality RSP Drift Drys and RSP Whip Wets can give you the look you need. Runyon Surface Prep has the knowledgeable staff to help you tackle a challenging project. Stop by for a consultation or have us consult on the job site. We are happy to assist.

Runyon Surface Prep Rental & Supply is a full-service sales and rental facility uniquely dedicated to the concrete polishing industry. Our uniqueness comes from providing our customers with a diverse equipment, product and supply portfolio. We offer training and support, such as technique workshops on prep, polishing or removal, and maintain a well-stocked inventory of consumables ready for your projects at a moment’s notice. Rather than perform contract work ourselves, we consult on job sites when necessary. With the backing of our vendors, Runyon Surface Prep offers support at any level, to assist in helping you get things done. We can deliver or ship wherever you need, or you can pick up from our facility.

Protecting Polished Concrete Floors with Sealers

Protecting Polished Concrete Floors with SealersStain protectors, guards and sealers are vital for ongoing polished concrete floor maintenance.

The final step in the concrete polishing process involves the application of a stain
protector. Stain protection is vital to the long term aesthetics of polished concrete, providing protection from discoloring penetrating stains and chemical etches. There are three main categories of stain protectors for polished concrete; penetrating, semi-penetrating guards and topical sealers. Each has its own features and benefits and its own required upkeep schedule.

3 Types of Polished Concrete Sealers

  1. Penetrating sealers: Made from a variety of silicones (silane, siloxane, silicate and siliconate) that penetrate deep into the surface. By sealing the access channels into the interior of the concrete, they shield against infiltration of liquids. Because they allow the concrete to breathe, these products are a good option for outdoor surfaces. Ideal for industrial facilities that want to avoid frequent applications, they provide invisible protection to the flooring. Since these sealers are not a topical layer, they do not alter the surface appearance by creating additional gloss or sheen and they also are not subject to being abraded away by foot traffic. However, they can breakdown over time and will need reapplication periodically. Use a sprayer and microfiber to apply this type of sealer.
  2. Semi-penetrating sealers: Often known as guard products, these have a topical aspect that will increase a floor’s surface sheen while also providing stain resistance and repelling water. Ideal for both indoor and outdoor concrete, these sealers (applied with a sprayer and microfiber) wear faster than polyurethanes and epoxies and need to be re-applied depending on the amount of foot traffic.
  3. Topical sealers: Give the concrete a high glossy shine while forming a protective film on the surface, like polyurethane and epoxy. They are economical and easy to apply by spray or roller. These sealants repel water and provide a durable chemical and abrasive resistant surface. Ideal for retail spaces where the vibrant color and high sheen of the flooring is an essential part of the design. They need to be re-applied periodically due to traffic wear and some may yellow due to UV exposure. Regular maintenance to prevent stains and scuffs is required to keep the surface looking its best.

Regular Maintenance

The type of sealer you select determines the frequency and extent of routine maintenance. For industrial floors, penetrating stain protectors offer better protection and liquid repellency than topical sealers. Because they are not a coating like topical products, stains and spills need to be removed promptly to prevent damage. Diamond impregnated pads can be used to mechanically clean and maintain floors. They come in a variety of grits for a variety of needs.

Use Diamond Pads to:

  • enhance the natural gloss and shine
  • deep scrub or strip a floor before recoating
  • repair damage from stains and etching
  • apply a light honing
  • prepare a floor for sealer application

Burnishing

If you over-apply a sealer and need to remove a leftover haze or film, you can burnish with a high grit polishing pad to enhance gloss after reapplying the sealer or guard. Use a diamond impregnated pad in conjunction with a burnisher to eliminate the excess.

Runyon Surface Prep Rental & Supply is a full-service sales and rental facility uniquely dedicated to the concrete polishing industry. Our uniqueness comes from providing our customers with a diverse equipment, product and supply portfolio. We offer training and support, such as technique workshops on prep, polishing or removal, and maintain a well-stocked inventory of consumables ready for your projects at a moment’s notice. Rather than perform contract work ourselves, we consult on job sites when necessary. With the backing of our vendors, Runyon Surface Prep offers support at any level, to assist in helping you get things done. We can deliver or ship wherever you need, or you can pick up from our facility.

Restoring Polished Concrete After Spills & Stains

Restoring Polished Concrete After Spills & Stains

Polished concrete is a fantastic flooring choice for industrial facilities, commercial spaces and retail stores. Though durable and low-maintenance, it is possible to damage this type of flooring. Liquids left on a polished surface can stain or etch, especially if it is citric, acidic or caustic in nature. Stain protectors are added as a final layer to prevent damage.

Removing Scratches and Stains

If an etch happens, use diamond impregnated pads and specially formulated cleaners to restore the concrete. The condition of the floor determines which grit to start at to remove scratches and stains. Always start with the least aggressive grit that will effectively remediate the etch. They can lighten a surface and remove dyes.

Polished concrete cleaners are formulated to remove dirt without damaging the
refinement or aesthetic values of the floor. They work with stain protectors to retain color and prevent further damage. The source of a spill will determine how to clean it. We compiled a list of substances that can stain when spilled and the appropriate way to clean them.

  • Acidic Substances (e.g. cola, milk, pickles, mustard): Acids will etch if not removed quickly. Clean immediately with fresh water or a concrete cleaner like Prosoco DailyKlean.
  • Adhesives: Remove the tape with a razor blade, being careful not to scratch the floor surface. Use Prosoco Wax & Cure Remover or acetone to eliminate the gummy residue.
  • Alkaline Substances (e.g. laundry soap, ammonia): Clean spills quickly and minimize stains by using a concrete cleaner like Prosoco DailyKlean. Refresh the gloss with a stain guard such as Prosoco LSGuard.
  • Candy: Remove the substance from the floor and clean any sticky residue with a concrete cleaner. Prosoco DailyKlean works well for this.
  • Chocolate: To get rid of most stains, dilute Prosoco Cleaner/Degreaser in a 1:10 ratio and light scrub.
  • De-Icing Salts: Use a concrete cleaner like Prosoco DailyKlean to remove the deposits.
  • Grease, Oil, Brake Fluid: Following a spill, clean with Prosoco Cleaner/Degreaser diluted to a 1:10 ratio with water.
  • Set-in Stains: Use Prosoco Oil & Grease Stain Remover to pull out tough stains. For deep stains, you may need to apply more than once.
  • Gum: Remove quickly to avoid staining and gently scrape up the remains. Eliminate leftover residue with Prosoco Wax & Cure Remover.
  • Heel Marks: Rub scuff marks with a concrete cleaner like Prosoco DailyKlean.
  • Mildew – For biological staining, treat the area with Prosoco EnviroKlean ReVive.
  • Tire Marks – Scrub smudges with Prosoco Cleaner/Degreaser.
  • Water Spots – Use of a high-speed rotary burnishing machine gets rid of most water spots quickly. On stubborn spots, dilute Prosoco LSGuard in a 1:10 ratio with water and lightly mist the surface before burnishing. The product creates a wet-looking shine.

Runyon Surface Prep Rental and Supply – Dedicated to the Surface Prep Industry

Runyon Surface Prep is a full-service sales and rental facility uniquely dedicated to the concrete polishing industry. Our uniqueness comes from providing our customers with a diverse equipment, product and supply portfolio. We offer training and support, such as technique workshops on prep, polishing or removal, and maintain a well-stocked inventory of consumables ready for your projects at a moment’s notice. Rather than perform contract work ourselves, we consult on job sites when necessary. With the backing of our vendors, Runyon Surface Prep offers support at any level, to assist in helping you get things done. We can deliver or ship wherever you need, or you can pick up from our facility.

The Benefits of Polished Concrete & How to Maintain It

The Benefits of Polished Concrete & How to Maintain It

Polished concrete is a cost-effective alternative to traditional flooring. Ideal for use in industrial and commercial spaces, polished concrete is most often used in large warehouses, retail stores, office buildings or private residences. By treating an existing concrete subfloor with a multi-step polishing process, no other materials are needed.

The Benefits of Polished Concrete

  • Ecologically Efficient: installation requires no other flooring materials
  • Cost Effective: it has a long life span
  • Environmentally-Friendly: it releases no toxic fumes or VOCs
  • Easy-to-Maintain: low up-keep
  • Durable: it does not rip or scuff – can withstand heavy foot traffic
  • Allergen-Free: does not harbor dust mites, pet dander or mold
  • Versatile: it comes in a variety of colors, finishes and sheens
  • Reflectivity: the high-shine cuts down on the need for artificial lighting

The Polished Concrete Process

Thorough prepping of the concrete beforehand, to remove stains and moisture, helps to achieve quality results. The grinding stage removes imperfections and flattens the concrete surface by refining with a progressive sequence of diamond tooling, starting with lower grit metal bond tools (e.g. 30s then 70s), hybrid coppers and finally with resins. Depending on the porosity of the concrete, densify after 200 or 400 grit to harden the floor. Then continue on with resins to polish the floor up to whatever level of shine your job requires (e.g. 400, 800, 1500). As a best practice: protect the floor with a topical guard or penetrating stain resistor. Guards/sealers are preferable for retail or commercial floors that require an aesthetic appearance. However, keep in mind that they are topical, so will scratch, scuff and walk off over time depending on level of foot traffic. Penetrating stain resistors help to tighten up the floor at a sub-surface level, protecting against spills, water, etc. These are ideal for industrial floors or floors that don’t require as shiny of an appearance, but need the stain resistance.

Properly Maintaining a Polished Concrete Floor

Although polished concrete flooring is relatively low-maintenance, it is not maintenance-free. Polished concrete typically does not require frequent sealing. Abrasive dirt and grime can result in the top coat sealant, wearing down and losing its luster. As a result, proper cleaning is needed to keep the high gloss shine from dulling.

  • Dust Mop Daily: this will remove dirt and grime accumulation
  • Frequent Wet Mopping: use water with an appropriate cleaner – avoid harsh chemicals that can break down the sealant
  • Use a pH Neutral Cleaner: solvents with too much acidity or alkalinity can dissolve the concrete and dull the shine
  • Work in Small Sections: keep the cleaner from drying and leaving a haze by tackling small sections
  • Correct Floor Pads: use softer (higher grit) cleaning pads to prevent scratching and etching e.g. white pads
  • Automatic Floor Scrubber: use non-abrasive attachments to clean large areas i.e. soft brushes, not coarse black brushes
  • Wipe Up Spills: prevent stains by cleaning them up immediately

Runyon Surface Prep Rental & Supply is a full-service sales and rental facility uniquely dedicated to the concrete polishing industry. Our uniqueness comes from providing our customers with a diverse equipment, product and supply portfolio. We offer training and support, such as technique workshops on prep, polishing or removal, and maintain a well-stocked inventory of consumables ready for your projects at a moment’s notice. Rather than perform contract work ourselves, we consult on job sites when necessary. With the backing of our vendors, Runyon Surface Prep offers support at any level, to assist in helping you get things done. We can deliver or ship wherever you need, or you can pick up from our facility.

Properly Place Decorative Concrete Overlays in Extreme Weather Conditions

TRU PC Floor by National Concrete Polishing

Indoors and out, decorative concrete overlays permanently cover up surface imperfections in existing concrete, giving them any new look imaginable at a much lower cost than removal and replacement.

Today’s cement-based overlays combine polymer resins with cement, sand, acrylics or acrylic blends and other additives to improve performance, wear resistance, beauty and shine. They adhere well to existing concrete and resist damage from salt, chemicals, UV exposure, freeze-thaw conditions and abrasion.

The most popular types of decorative concrete overlays include stamped and stained concrete, and the popularity of other types varies in different areas of the country:

  • Exterior knock-down finishes are popular in the Sunbelt regions
  • Hard-troweled interior microtoppings are popular in metropolitan regions

With many options available, you’re sure to find at least one system that offers the most variety in color and finish while meeting your requirements for durability, appearance, maintenance and cost. Contractors must pay critical attention to adequate surface preparation, the most critical factor to long-term performance. For this reason, they prefer mechanical surface preparation, which does a more thorough job with the same grinding equipment and diamond tooling used for polishing concrete.

How to Concrete for Decorative Overlays in Extreme Weather Conditions

Concrete experts like the Portland Cement Association suggest contractors employ hot weather concreting procedures if the ambient temperature is forecast to exceed 77°F. Hot weather, high wind velocity and low relative humidity force higher concrete temperatures, which in turn increase the water-cementitious materials ratio, resulting in lower strength and reduced durability. Concrete will not only set quicker; the high rate of evaporation can cause early-age shrinkage and cracking before concrete sets. Thermal cracking can occur from rapid temperature changes such as those from a hot day to a cool night.

4 Key Temperatures to Check

  1. Air or Ambient Temperature
  2. Concrete Substrate Temperature
  3. Materials Temperature
  4. Water Temperature

Knowing these temperatures and employing the installation guidelines described below will help ensure the desired results are achieved.

10 Installation Guidelines for Hot Weather Concreting

  1. Store materials in a cool, dry place, rather than on-site underneath a tarp, which can get very warm.
  2. Plan the installation early in the day, when both air and substrate temperatures will be at their lowest.
  3. Substrate temperature is most important. Use a surface thermometer to determine the deployment of hot weather concreting procedures. Tenting or shading the installation area can help control substrate temperature.
  4. Work the materials more quickly and in smaller areas. It is critical to use the right tools, including heavy-duty drills for mixing, to maximize efficiency. Providing sufficient labor will minimize the amount of time required to place and finish the materials.
  5. Make modifications to concrete mixtures. Adding retarders, water reducers, extended set-control admixtures, slag cement or synthetic fibers can reduce slump loss, setting time and plastic shrinkage cracking.
  6. For exterior applications, erect temporary wind breaks to prevent rapid evaporation due to air movement over the surface. Use sunscreens, mist fogging or evaporation retardants.
  7. Chill mix water and store aggregate in a cool, dry place. Blocks or bags of ice in a 55-gallon drum of water will chill the water to increase working time. In the case of a pump installation of a self-leveling material, sections of copper tubing or coiled garden hose packed in a drum of ice will chill the water on its way to the pump, also allowing for a longer working time.
  8. The mixing bucket or barrel must be cleaned before mixing a fresh batch of material. Leftover material on the sides of the mixing bucket or barrel can accelerate the set times of the materials.
  9. Consider using accelerators to expedite finishing operations and avoid plastic shrinkage cracking.
  10. Where possible, halt concrete work until the temperature is more conducive to a successful installation.

Runyon Surface Prep is a full-service stocking distributor for all your concrete prep, polishing, decorative, repair, restoration and maintenance needs. We carry the following:

CTS RAPID SET 50 POUND TRU SELF-LEVELING CEMENT – Use CTS Rapid Set TRU Floor Self-Leveling Cement for high performance floor topping, underlayment and resurfacing projects. TRU Self-Leveling is ideal for projects that require long life and working time. It settles to a light off-white color ideal for stained, dyed or decorative aggregate flooring. Not only can TRU grind, but it can also be used to polish, making it ideal for those shiny decorative floors.

CTS RAPID SET 50 POUND TRU GRAY SELF-LEVELING – Use Rapid Set TRU Gray Self-Leveling when you need a high quality, fast, cement gray topping that can be polished. TRU Gray is a high performance, architectural topping and resurfacer that can be used indoors and outdoors, in wet or dry environments. It is ideal for projects that need long flow life and working time while achieving high early strength. A customized appearance can be achieved by adding decorative aggregate.

CTS RAPID SET 60 POUND TRU PC POLISHED CONCRETE TOPPING – Use Rapid Set TRU PC Polished Concrete Topping when you need your floor ready for foot traffic in 2 to 3 hours. It is a professional grade, hydraulic cement-based, self-leveling topping that can be ground and polished to expose the aggregate and simulate the appearance of polished concrete. TRU PC levels rapidly, maintains workability for up to 20 minutes, produces a dense surface, and has high bond strength. As an interior and exterior product, TRU PC is durable in wet or dry conditions.

The Time is Now to be OSHA-Ready for New Crystalline Silica Rule

The Occupational Safety and Health Administration (OSHA) has issued a final rule to curb lung cancer, silicosis, chronic obstructive pulmonary disease and kidney disease in America’s workers by limiting their exposure to respirable crystalline silica.

The new OSHA regulation, Respirable crystalline silica, Section 29 CFR 1926.1153, took effect on June 23, 2016. Industries have one to five years to comply with most requirements, based on the following schedule:

Construction – June 23, 2017, one year after the effective date.

General Industry and Maritime – June 23, 2018, two years after the effective date.

Employers who fully and properly implement the engineering controls, work practices and respiratory protections are not required to measure respirable silica exposures to verify levels at or below the PEL for workers.

For contractors, this means now is the time to make sure your equipment will comply.

OSHA Enforcement Table

(Fine information supplied from Contractor Supply Magazine)

About 2.3 million workers are exposed to respirable crystalline silica in their workplaces. This includes 2 million construction workers who drill, cut, crush or grind silica-containing materials such as concrete and stone, and 300,000 workers in brick manufacturing, foundries and hydraulic fracturing.

Who Is Affected?

Anyone working on a construction site who creates or is exposed to silica dust in the course of performing work, including, but not limited to:

  • Grinding
  • Drilling
  • Barrel mixing
  • Edging
  • Cutting block
  • Sweeping
  • Shot blasting
  • Hand Grinding
  • Scarifying
  • Drywall sanding
  • Demolition
  • Precasting
  • Bricklaying
  • Broom sweeping

Key Provisions of the New Crystalline Silica Rule

  • Reduces the permissible exposure limit (PEL) for respirable crystalline silica to 50 micrograms per cubic meter of air, averaged over an 8-hour shift.
  • Requires employers to use engineering controls (such as water or ventilation) to limit worker exposure to the PEL; provide respirators when engineering controls cannot adequately limit exposure; limit worker access to high exposure areas; develop a written exposure control plan, offer medical exams to highly exposed workers, and train workers on silica risks and how to limit exposures.
  • Provides medical exams to monitor highly exposed workers and gives them information about their lung health.
  • Provides flexibility to help employers — especially small businesses — protect workers from silica exposure.

New Exposure Limits

New Silica Exposure LimitsChanges to the Permissible Exposure Level (PEL) of respirable crystalline silica is 50 micrograms per cubic meter of air (50μg/m3) at an 8-hour, time-weighted average (TWA) under any foreseeable conditions. The Action Level (AL) is 25 ug/m3 (0.025 mg/m3). You are at risk if the dust you breathe during an eight-plus-hour shift contains more RCS than the accessible amount, which is much smaller than a penny. 

How to Choose a HEPA Vacuum

  • High quality HEPA filters that are tested and certified, with a rating of at least 99.99 at 0.3 micron
  • 25 CFM per blade is required for hand grinders
  • High CFM & Water Lift for proper matching to equipment
  • Must have a mechanical filter cleaning method that is contained and allows no dust to escape
  • Multi levels of filtration, including a cyclonic chamber, pre-filters, HEPA’s and pre-separators
  • Drop down bagging containment systems, no dust can or tray
  • Availability to attach tools for collection at the source
  • Wet and dry availability when needed

For an in-depth look at the new regulation, read our blog, The New Crystalline Silica Rule – Are You OSHA-Ready?

Runyon Surface Prep is a full service stocking distributor for all your concrete prep, polishing, decorative, repair, restoration and maintenance needs. We carry the full line of Ermator vacuums and pre-separators, as well as grinders, removal equipmentoverlay productscolor products, densifiersmixersdiamond toolingpolyasparticsjoint fillers and much more. You name it, we have it!