effect of mixing time on concrete strength
effect of mixing time on concrete strength
(OP)
Does anyone know of a widely recognized reference(ACI,PCA,etc.) that discusses the effect that prolonged mixing time has on concrete strength? I know most specs. limit mix time to about 1.5 hours but I believe this is primarily to avoid having to add additional water to maintain workability. I have a situation where a truck had to wait a longer than anticipated time due to problems with the pumper. After it became apparant that the pump was not going to work, the truck was sent to another site where the concrete was placed without the use of a pump. By this time more than 1.5 hours had elapsed. My question is, if no additional water was added to the mix, should this extended mixing time result in lower concrete strengths??






RE: effect of mixing time on concrete strength
Carl Bauer
www.bauerconsultbotswana.com
RE: effect of mixing time on concrete strength
RE: effect of mixing time on concrete strength
RE: effect of mixing time on concrete strength