Yeah, I get a horrible reaction from beans too. Totally understand the cement feeling. I would recommend that if people are on 811 and have a cooked craving, have more fruit, eat some greens, have root vegetables... but STAY AWAY from beans.
Many beans are toxic to humans in their raw form.
In their cooked form, we just do not digest them optimally, farts anyone? This is a signal that something is wrong in the body.
Then beans are high in protein, and high protein diets may increase ones risk of cancer, arthritis, and kidney stones.
I would say avoid them except as an emergency food. Rice might be a better emergency option.