It will take you through every step of your concrete project, from choosing the concrete and admixtures to finishing it.We recommend that you print it out, read it over a few times and keep it handy while you work.
this is more of a reminder for those threads that are buried deep in pages that never get seen anymore. when you do a search, you can actually find threads where i've passed along quick and dirty ways to prove it to yourself.
#57 stone (or any other aggregate) is NOT self compacting..is far from it. your techs, engineers and company will appreciate the fact that you're not exposing them to ridiculous mistakes.
i have plenty of data to prove that it is not and will put up my pay check in a bet any day of the week. In the old days, compaction of sand was often specified to be done by "flooding". the water lubes up the sand particle and imparts just enough pressure to allow it to move around and fill the voids.
if you think that your project may utilize crushed aggregate, please do a search of threads on eng-tips and read up...there has been many discussions on the topic. I never actually witnessed it, but wondered how effective it was. you can 'always' improve compaction depending on the effort put in to the system..higher the compaction, the more effort you have to put in to see is not self compacting though so don't misinterpret the term...it's basically liquefaction.
We are pleased to provide resources so that you feel confident in your concrete project, whether you’re a rookie homeowner or an experienced contractor.
This do-it-yourself guide is intended to thoroughly prepare you for the work ahead.Uses - for filling holes and, in combination with reinforcement rods, for structural repair of timber and masonry, including concrete.Self leveling, self degassing (bubbles of air, trapped during mixing, will rise to the surface and escape)A two part, (two gels) thick injection resin. I had done several regular pours, renting the forms and all, thinking these new light weight forms would be simple and cost effective. The only part off the walls that remained straight were the parts where I ran out of rental bracing and finished with 2x4s. I tied my corners together with 1/8 " cable to keep the tops of the forms from pushing out as we poured .Concrete was 6 sack grout (pumped) with low slump (about 9) and went smoothly.this topic always manages to come back around and i'm always lost for words at how many people blurt out "it's self compacting and has been for the 15 years i've been doing this". 75% of all forensic investigations i've done related to foundation problems involved #57 stone..anyone has formal references, papers, articles, etc that discusses this topic, i surely would appreciate if you could pass along the link. maybe i'll write an article for publication backed up with field examples and lab data.