Radically polymerizable resin composition

Provided is a radically polymerizable resin composition capable of suppressing a change in the strength of a cured product due to exposure to a high-temperature environment. The radically polymerizable resin composition of the present invention contains a radically polymerizable resin (A), an ethylenically unsaturated compound (B), a hindered phenol compound (C), and a hindered amine compound (D). 本发明提供可以抑制暴露于高温环境下所带来的固化物强度变化的可自由基聚合的树脂组合物。本发明的可自由基聚合的树脂组合物包含可自由基聚合的树脂(A)、烯属不饱和化合物(B)、受阻酚化合物(C)和受阻胺化合物(D)。