The Chinese government will use all of the tools that it has at its disposal to accomplish what it wants to accomplish. In terms of the AIIB, it's incumbent on the other parties participating in the AIIB to make sure that contracts that are going out are not all being taken by Chinese contractors and to ensure that the projects uphold human rights and environmental standards. The onus in some ways is on the participants in the AIIB to make sure that it is not just being used to carry out China's plans.
Regarding the belt and road initiative, there's also some very interesting analysis. Some people think it just isn't going to become everything that China says it going to become, because it doesn't have the money to do it and it has push-back in its own population.