What type of cement is appropriate for lightweight concrete?
Lightweight concrete may be produce with any type of portland cement or portland cement & fly ash mixture. The performance characteristics of type II, type III and specialty cements carry forward into the performance of the lightweight concrete. • Is it appropriate to add fly ash to the cement and water slurry for lightweight concrete? Fly ash added to the cement does not adversely affect the basic hardened state of lightweight concrete. Infusing and supporting the lightweight concrete with the air cell system is a mechanical action and is not problematic with fly ash or admixture concrete chemistry. Note that some fly ash mixes may take longer to set than pure portland cement applications. Mixes with large percentages of fly ash may take an very extended time to set up. High carbon content fly ash such as typical “bottom ash” should be generally avoided in most cellular or plain concrete mixes. • Is it appropriate to reinforce cellular concrete with synthetic fibers? Synthetic fiber r
Lightweight concrete may be produce with any type of portland cement or portland cement & fly ash mixture. The performance characteristics of type II, type III and specialty cements carry forward into the performance of the lightweight concrete. • Is it appropriate to add fly ash to the cement and water slurry for lightweight concrete? Fly ash added to the cement does not adversely affect the basic hardened state of lightweight concrete. Infusing and supporting the lightweight concrete with the air cell system is a mechanical action and is not problematic with fly ash or admixture concrete chemistry. Note that some fly ash mixes may take longer to set than pure portland cement applications. Mixes with large percentages of fly ash may take an very extended time to set up. High carbon content fly ash such as typical “bottom ash” should be generally avoided in most cellular or plain concrete mixes. • Is it appropriate to reinforce cellular concrete with synthetic fibers? Synthetic fiber r
