These data serve as a basis for comparing the evolution of excess pore water pressure in different materials (natural sands, mixtures of glass beads and crushed sand), as well as various influencing factors and specimen preparation methods, obtained using the newly developed simplified undrained cyclic shear test, the PWP Tester. Additionally, the data for the determination of grain shape parameters of several materials are included. These files support the publication: https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-945638.