One challenge you will face with starting a mini batch plant is getting the correct ratio for the short-load mixes. 

Common ratios we have seen used by mini batch plant operators are 1:3:3, 1:2:3, and 1:2:4. 

To break down the ratio, it goes like this (Cement):(Sand):(Gravel).

So if you were to use a 1:3:3 ratio, it would be one part cement, three-part sand, and three part gravel. The 1:3:3 ratio is one of the best concrete mixing ratios to produce a 3000 PSI mix. The 1:3:3 ratio works well for footings, concrete patios, and foundation walls. 

The 1:2:4 ratio which usually comes out to produce a 2900 PSI mix is used for small-span residential building structures.

The 1:2:3 ratio is best used for foundations, walls, and slabs. It produces on average 4000-4500 PSI after the 28 days curing process. 

Whichever ratio you choose for the job, our wheel loader comes with weight scales to be able to get the correct ratio on each order or if you have a skid steer, we can recommend suppliers of weight scales to put onto a skid steer. 

This ensures that you can get the correct weight for each aggregate before dumping them into the hopper. 

We intentionally wanted to add the weight scales to the loader so it wouldn’t slow yard production per hour. 

Our mixers have optional water attachments that can be either used for cleanout or the mix ratio.