Blog
Filter by:
Technical Bulletin – 20210118
Deformation Rate & Sprocket Arrangement Pine slowed the specimen deformation rate of the Pine AF850 Test Press by installing the same size sprockets on the motor and the jack to achieve a 1:1 ratio between the motor and the jack because it was found not to comply with the specimen deformation rate of 50 ±…
Read MorePine Recommends Line Conditioner
Pine recommends using a line conditioner with all 120 volt variants of the AFG1 and AFG2 gyratory compactors. These include AFG1A, AFG1AS, AFG2A, and AFG2AS. What is a Line Conditioner? A line conditioner is an electrical device that automatically responds to limited over- and under-voltages that would otherwise adversely affect operation of your machine. Approximately…
Read MoreWelcome Tammy Mysliwiec
It is with great excitement that we announce and welcome Tammy Mysliwiec as a temporary addition to the Pine Test Equipment Team. Tammy joined our sister company, Pine Electronics, Inc., as a New-Business Development Manager in 2017. In her role with Pine’s PCBA contract manufacturing entity, she focuses on customer retention and new customer development. While maintaining…
Read MoreClarification: Peak Stability & Flow
Technical Bulletin 20201026 Clarification of Peak Load and Flow Purpose: The purpose of this technical bulletin is to clarify the Marshall Test results reported by the Pine 850 Marshall Test Press outfitted with a digital recorder. This bulletin does not apply to a Test Press outfitted with a paper recorder. The Standard Applied: AASHTO T…
Read MoreBent GB1 Brovold Lift Screw?
Did you bend the lift screw on your GB1? Take heart. You’re not alone. A Common Problem on AFGB1’s: Bent Lift Screws The Pine AFGB1 is designed with a screw system to lift the gyratory head off the compaction chamber and rotate it out of the way. Unfortunately, the lift screw that forms the cornerstone…
Read MoreClean Molds & End Plates Matter
“My boss is always on my case to keep the molds clean. They’re a pain! Does it really matter?” Yes, clean molds and end plates matter. If your molds look like the ones below, you have some work to do. Required for Certification A proper annual verification/calibration of a gyratory compactor includes checking the mold…
Read MoreTest Press Data Analysis Help
Pine provides Excel® workbooks with some of its equipment as a way to help users handle and analyze data. Occasionally workbooks are updated to improve them and we want you to have the most recent version. The current Excel® workbooks available for the Pine AF850TD Test Press or Pine AF850T test presses upgraded with a…
Read MoreGB1 Brovold Angle of Gyration
“What does the angle information on my AFGB1 calibration sticker tell me? This is confusing!” Sound like you? Keep reading. This article is an attempt to bring some clarity to subject. Angle of Gyration Defined AASHTO T344 provides the following definitions (See Figure 2), Section 3.1. external angle – the angle formed between the external…
Read MoreClean Your AFGB1’s Compaction Chamber
“I’m told I need to keep the compaction chamber of my AFGB1 free of asphalt. It’s a real pain digging the asphalt out of the bottom of the chamber. Is it really such a big deal?” Yes, keeping the bottom of your AFGB1 compaction chamber free of asphalt is important. Frequently, our field service technicians…
Read More