Curing temperature has been reported to have significant effect on the early and long-term strength development of cementitious systems such as concrete, mortar, cement-stabilised granular soil, and cement-stabilised clay. For cement-stabilised clays, elevated curing temperature is reported to enhance both early and long-term strength, which is different from that of concrete, mortar, and cemented granular soil. Presently, long-term physio-chemical studies were limited in the literature to fully explain this behaviour. At the same time, sand impurities in clay, which are commonly encountered in the field, have not been considered thoroughly in previous studies. Discussion on methodologies to evaluate temperature sensitivity and its consequence on strength development of cement-stabilised soil is limited. This paper aims to address these knowledge gaps by conducting unconfined compressive and physio-chemical tests on Portland blast furnace cement (CEM III/C) and ordinary Portland cement (CEM I)-stabilised kaolin clay with and without sand impurities cured at different temperatures (cement classification is based on BS EN 197-1 (BSI 2011). It is found that the distinct temperature effects on long-term strength behaviour are mainly attributed to both increased strength-enhancing materials in the cement-soil system and the presence of fine-grained clay particles. A generic method of evaluating temperature sensitivity on cementitious systems with a novel approach to incorporate temperature effect on strength development of cement-stabilised clayey soil is proposed and validated with data obtained from published literature on similar materials.

据报道，固化温度对水泥体系（如混凝土、砂浆、水泥稳定颗粒土和水泥稳定粘土）的早期和长期强度发展有显着影响。对于水泥稳定粘土，据报道，提高固化温度可提高早期和长期强度，这与混凝土、砂浆和胶结颗粒土不同。目前，文献中的长期物理化学研究有限，无法充分解释这种行为。同时，以往的研究并未充分考虑现场常见的粘土中的砂杂质。关于评估温度敏感性的方法及其对水泥稳定土强度发展的影响的讨论是有限的。