Table of Contents February 2004

Let the Sunshine In

Building Better Blocks

Coming Clean on Truck Washing

It's a Small World After All

It's All in the Details

Bringing New Life to Your Mix

A Clean Slate

Smoothing the Burrs for a Better Fit

Maturity and Strength

A GPS Primer

Diagnosing Problems with Decorative Concrete

What are integral water repellents?

I've heard a lot about integral water repellents for block. What are they and what is their purpose? Do I need to specify them in the mortar as well as the block?

Working with hard and soft water

We are working with two water sources. One is treated soft water. The other is hard water from a well with a hardness of about 450. Using the same mix, we have to add 6 to 7 liters more of hard water per cubic meter of concrete to obtain the same workability we get with the lesser amount of soft...