Complex sentence: Stress cracking of exposed facing could occur in low temperatures; low stiffness and strength may lead to significant creep having poor long-term stability (Leshchinsky, et al, 2009).
Split into simpler sentences: Stress cracking of exposed facing could occur in low temperatures. Low; stiffness and strength may lead to significant creep having poor long-term stability (Leshchinsky, et al, 2009).