Mix Design: Page 12

Restoring America's First National Recreational Area

VSS International helps the FHWA restore Lake Mead's National Park assets through microsurfacing, chip seals and open grade overlays

Over 65 different crew members played a part to accomplish each step of the project from sweeping, milling, crack sealing, microsurfacing, chip sealing, paving and striping.

Holcombe Mixers Joins $1.3 Billion Border Wall Project In Yuma, Arizona

Holcombe Mixers

The new alliance between Holcombe Mixers, Fisher Sand and Gravel Co. and Caterpillar Inc. is the latest strategic collaboration to accelerate completion of the border wall.

Holcombe Mixers

Recycled Asphalt 101: Scratching the Surface

Asphalt’s ability to make meaningful economic and sustainable impacts makes the material ripe for opportunity and contractors should become familiar with how to properly use the recycled material

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The Importance of Screed Maintenance

A clean, level and well-adjusted screed helps ensure a quality mat

Screed maintenance is just like any other type of maintenance: if you ignore it, you pay in the long run. If the crew takes a little time in the morning to ‘zero’ out the screed adjustments and make a visual inspection of the screed condition, you start out the day giving your crew the best chance for success.

New Texas DOT Rule Allows for Concrete Automation

GCP Applied Technologies Inc.

Spec update enables GCP Applied Technologies' VERIFI in-transit concrete management system to provide breakthrough automation to TxDOT projects, advancing efficiency.

GCP's VERIFI

MIT Researchers Say Stiffer Roads Could Mean Better Fuel Efficiency

MIT researchers suggest that small changes in roadway paving practices could reduce fuel efficiency loss, potentially eliminating a half-percent of the total greenhouse gas emissions from the transportation sector.

MIT Stiffer Roads Fuel Efficiency

Josh Leftwich Named President and CEO of the Texas Aggregates & Concrete Association

Texas Aggregates & Concrete Association

Texas Aggregates & Concrete Association (TACA) has named a new president.

Josh Leftwich

State DOTs Would Get $15B in House Phase 4 COVID-19 Bill

American Association of State Highway and Transportation Officials (AASHTO)

AASHTO projects DOTs will need nearly $50B to continue operations in the face of drastic falloffs in motor fuel tax revenues, toll road receipts, and other funding sources resulting from coronavirus response

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Handling Rust in Asphalt Prior to Sealcoating

Why rust forms in asphalt pavement and how to treat it

Rust 1

Sealant protects longitudinal joints prior to paving

Longitudinal joint sealants -- also called void-reducing asphalt membranes -- are sprayed prior to paving to extend the life of longitudinal joints

What’s unique about a void-reducing asphalt membrane is that it is applied beneath the asphalt mat before the mat is placed. It is sprayed beneath where the longitudinal joint will be.

Paving Asphalt 'Thinlays' to Preserve Pavement

Asphalt lifts thinner than 1-1/2 in. becoming more common preservation option

Because of the rapid cooling of thinlays, warm mix asphalt (WMA) technology can be used to aid in proper compaction.

Causes & Cures for Segregation in Asphalt Pavements

By identifying where segregation can occur, asphalt producers and paving professionals can work to prevent this problem

Segregation in asphalt has detrimental effects on the final performance of a roadway. The pavement will have reduced fatigue life, rutting, raveling and moisture damage. These effects can cause a severe reduction in pavement life. While there are many of causes for segregation, there are also many way to avoid it.

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