More stories about Water

  • Does New Standard Carry Water?

    As a producer, how can I use the recent changes in ASTM standards to use process water in my concrete? Promoting using process water in concrete is a tedious effort. We turned to three experts to answer this important question. The answer below is supplied by Richard S. Szecsy, PhD, PE, vice...

  • 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...

  • Concrete Too Salty?

    Does the water for concrete have to be completely void of salt (from seawater)? What happens if it is not?

  • Reducing Washout Water Quantities

    The drivers at one of our plants have been using about 800 to 850 gallons of fresh water to wash out their mixers at the end of their shift. The amount of wash water often becomes a problem when we’re busy in the summer. Is there any way to reduce this quantity? I've heard that some producers are...

  • Gray-Water Recycling Basics

  • Gray-Water Compensation

  • How to Stay in Cold Water

  • Algae in Mix Water Can Affect Air, Strength

    We recently supplied a house slab where the bleedwater had a greenish tint. We discovered that the water retention pond we used for water collection had green algae that had formed on the surface and was used for concrete production. The concrete met and gained strength normally, however. Is there...

  • Overcoming Ornamental Obstacles with Admixtures