The I-5 Willamette River Bridge project team uses 17 unique concrete mixes.
Superplasticizers are not just water reducers anymore.
Q: I'm a quality control manager for a mid-size ready-mix producer and am dealing with several quality issues which need resolution. I am having difficulties convincing the owner that he needs to increase funding for the quality system in order to produce more consistent concrete. How can I...
TCP has published an excerpt from the book, Self-Consolidating Concrete: Applying what we Know, by Joseph Daczko, published by CRC Press, 2012. This portion examines the importance of controlling moisture in the aggregate that will be used for producing self-consolidating concrete.
Optimism Returns to the Big Show.
There are several strategies for finding truck mechanics.
Q: We are experiencing low compressive strength test results on some concrete we supplied to a job. We know it is due to poor testing of the cylinders. How do we convince the contractor and engineer where the issue is?
World of Concrete Returns to Las Vegas, Jan. 23-27
Ten years after NRMCA introduced its Prescription to Performance Initiative (P2P), the concrete industry continues to fine-tune how the program can enhance the relationship between producers and other members of the construction community, all in the name of developing better projects.
A unique concrete mix wins ASCE innovation award.
D. Gene Daniel watches out for the interests of the little guy.
Q: We received a request to submit proof that our aggregates are not alkali-silica reactive. We've never seen this type of request before in our area. They required ASTM C1260 testing, which we completed and failed. What do we do now?
Producers must not only develop mix designs that provide excellent hardened properties such as durability and smooth surface appearance, they must provide fresh concretes that are flowable, consistently uniform, and achieve consistent set times.
2011 World of Concrete attracts crowds worldwide.
Chemical admixtures are helping concrete meet today's toughest construction challenges and shaping the future.
Q: We will be supplying ready mixed concrete for a commercial floor project. The engineer of record has added fibers to the project specification. The concrete contractor is now concerned that with this job change, the fibers may slow his placement procedures and has submitted a change order...
-
World of Concrete will be an ideal place to learn about this material.
-
We are about to bid on a project calling for controlled low-strength materials (CLSM) for backfilling sewers and other underground utilities. The designer is hoping to use this material to earn LEED credits. We have been asked to verify the density of CLSM we plan to provide. Does CLSM's density...