Twining Inc.

Long Beach, CA 90806

Company Details
2883 East Spring Street, Suite 300
Long Beach, CA 90806
https://www.twininginc.com/

Twining, Inc., based in Long Beach, is the leading provider of construction quality control and engineering services in California. Through its statewide network of offices, Twining provides concrete applied engineering and consulting services; geotechnical engineering; construction materials testing and special inspection; condition forensic investigation of existing structures and pavements; stormwater management; specialty testing; and asphalt pavement quality assurance, design, and materials evaluations.

To learn more about Twining, Inc. visit www.twininginc.com.    

Articles & News
Figure 2. Photograph of a fluorescent thin section in UV light, which makes the concrete glow.
New Developments in Quality Assurance for Concrete Pavement Mix Design
New developments in concrete pavement quality assurance can provide important information on the quality, durability, and compliance with mix design specifications.
March 3, 2021
Photograph of polished surface from a concrete core removed from a poorly cured slab on ground showing layer of dark paste at the top of the core. Scale in millimeters. The loss of material at the top is due to poor hydration.
The How's and Why's of Concrete Curing
Discover ways concrete petrographers evaluate how well (or not) curing operations are done in concrete construction.
March 2, 2017
Figure 1: Reflected light photomicrograph of the polished surface of a core removed from a scaled sidewalk. The red arrows highlight microcracks subjacent to the scaled surface. This is an example of distress typical of classic freeze-thaw scaling.
Using Petrography to Understand and Resolve Scaling Issues
December 22, 2014
Figure 1: Reflected light photomicrograph of polished surface showing dark, low w/cm mortars (green bars) coating aggregate particles. These are typical indicators of retempering.
Hot Weather Effects on Concrete
High temperatures. Low humidity. High winds. These conditions typify hot weather and present many challenges to the concrete contractor. Here are some of the ways concrete petrographers look at concrete affected by hot weather conditions.
May 27, 2014
Figure 1. Stereomicroscope image. Reflected light photomicrograph of the polished surface of a concrete core. The image was taken at 10x magnification. The red arrows highlight mortar with darker color than surrounding concrete matrix. Features such as these often form when concrete is retempered.
Petrography: What It Can & Cannot Do
This valuable concrete testing method will help determine whether issues will affect concrete performance or are just skin deep.
January 8, 2014
Avoid Surface Defects on Interior Slabs
Avoid Surface Defects on Interior Slabs
Following the basic finishing rules will help you avoid blisters and delaminations, dusting, crazing, crusting and reduced resistance to surface wear on interior, steel troweled floors.
June 13, 2011
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More from Twining Inc.
Figure 2. Photograph of a fluorescent thin section in UV light, which makes the concrete glow.
New Developments in Quality Assurance for Concrete Pavement Mix Design
New developments in concrete pavement quality assurance can provide important information on the quality, durability, and compliance with mix design specifications.
March 3, 2021
Photograph of polished surface from a concrete core removed from a poorly cured slab on ground showing layer of dark paste at the top of the core. Scale in millimeters. The loss of material at the top is due to poor hydration.
The How's and Why's of Concrete Curing
Discover ways concrete petrographers evaluate how well (or not) curing operations are done in concrete construction.
March 2, 2017
Figure 1: Reflected light photomicrograph of the polished surface of a core removed from a scaled sidewalk. The red arrows highlight microcracks subjacent to the scaled surface. This is an example of distress typical of classic freeze-thaw scaling.
Using Petrography to Understand and Resolve Scaling Issues
December 22, 2014
Figure 1: Reflected light photomicrograph of polished surface showing dark, low w/cm mortars (green bars) coating aggregate particles. These are typical indicators of retempering.
Hot Weather Effects on Concrete
High temperatures. Low humidity. High winds. These conditions typify hot weather and present many challenges to the concrete contractor. Here are some of the ways concrete petrographers look at concrete affected by hot weather conditions.
May 27, 2014
Figure 1. Stereomicroscope image. Reflected light photomicrograph of the polished surface of a concrete core. The image was taken at 10x magnification. The red arrows highlight mortar with darker color than surrounding concrete matrix. Features such as these often form when concrete is retempered.
Petrography: What It Can & Cannot Do
This valuable concrete testing method will help determine whether issues will affect concrete performance or are just skin deep.
January 8, 2014
Davidrothsteinphoto 10284187
David Rothstein, Ph.D., P.G., FACI
June 21, 2011
Avoid Surface Defects on Interior Slabs
Avoid Surface Defects on Interior Slabs
Following the basic finishing rules will help you avoid blisters and delaminations, dusting, crazing, crusting and reduced resistance to surface wear on interior, steel troweled floors.
June 13, 2011
Scaling, above, and premature surface wear typically occur when contractors mix bleedwater into the surface or trap bleedwater and air directly beneath the surface.
Avoid Surface Defects on Exterior Slabs
The proper finishing techniques will help you avoid defects like premature wear, scaling, mortar flaking and plastic-shrinkage cracking.
April 21, 2011