Engineers Discover New Concrete Additives
According to the release from MIT, when ordinary Portland cement (OPC) is mixed with water, sand and gravel material during the production of concrete, it becomes highly alkaline, creating an environment for the sequestration and long-term storage of carbon dioxide in the form of carbonate materials, or a process known as carbonation.
Despite this, the study notes, when these reactions occur they can weaken the material and lower the internal alkalinity, which accelerates the corrosion of the reinforcing rebar. These processes ultimately destroy the load-bearing capacity of the building and negatively impact its long-term mechanical performance.
“The problem with these postcuring carbonation reactions,” Masic said, “is that you disrupt the structure and chemistry of the cementing matrix that is very effective in preventing steel corrosion, which leads to degradation.” Learn more: https://www.paintsquare.com/news/view/?26260
Anchors and Bits
Need answers about the exact type of concrete anchor and bits required for use in an application? Information and a brief description about the different types of concrete anchors and bits is now available. Click on any picture to be redirected to a page that will contain in-depth information about the anchor and bit.
A 6-Day Process for Successfully Onboarding New Construction Hires
Using this step-by-step framework from Leaf Home’s Chris Counahan can help position new employees up to excel from the first day on the job.
DEWALT Concrete Surface Grinder Kit, 5-Inch (DWE46253)
About this item
- Brushless motor requires no brush changes
- The Electronic kickback brake engages when a pinch, stall, or bind-up event is sensed, engaging with maximum force to quickly stop the wheel, reduce the movement of the grinder, And shut the motor off
- POWER-LOSS RESET® – The ON/OFF trigger switch has a no-volt release function. In the event of a power outage or other unexpected shut down, the trigger switch will need to be cycled (turned off and then on) to restart tool.
- Variable speed functionality lets the user change wheel speed for applications as needed
- DWE46005 bail handle (included) offers multiple positions for user preferred configuration
- Order now: https://amzn.to/3KBKpmO
Concrete joke of the week…Some sort of UNTOAD story behind this.