Crossover Effect in Cement-Based Materials: A Review

Applied Sciences

Mohammad Panjehpour¹  Payam Shafigh²  Sumra Yousuf³  Huzaifa Hashim³  Zainah Ibrahim³ 

[1] Centre for Advanced Concrete Technology (CACT), INTI International University, Nilai 71800, Malaysia;Department of Building Surveying, Faculty of Built Environment, University of Malaya, Kuala Lumpur 50603, Malaysia;Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia;

关键词: crossover effect;    cementitious materials;    compressive strength;    accelerated curing;    concrete;    mortar;   

DOI  :  10.3390/app9142776

来源: DOAJ

【 摘 要 】

Cement-based materials (CBMs) such as pastes, mortars and concretes are the most frequently used building materials in the present construction industry. Cement hydration, along with the resulting compressive strength in these materials, is dependent on curing temperature, methods and duration. A concrete subjected to an initial higher curing temperature undergoes accelerated hydration by resulting in non-uniform scattering of the hydration products and consequently creating a great porosity at later ages. This phenomenon is called crossover effect (COE). The COE may occur even at early ages between seven to 10 days for Portland cements with various mineral compositions. Compressive strength and other mechanical properties are important for the long life of concrete structures, so any reduction in these properties is of great concern to engineers. This study aims to review existing information on COE phenomenon in CBMs and provide recommendations for future research.

【 授权许可】

Unknown