Self-cured concrete is a type of cement-based material that has the unique ability to mitigate the loss rate of water and increase the capacity of concrete to retain water compared to conventional concrete. The technique allows a water-filled internal curing agent to be added to the concrete mixture and then slowly releases water during the hydration process. Many researchers have studied the composition of self-curing concrete using different materials such as artificial lightweight aggregate (LWA), porous superfine powders, superabsorbent polymers (SAP), polyethylene glycol (PEG), natural fibers, and artificial normal-weight aggregate (ANWA) as curing agents. Likewise, physical, mechanical, and microstructure properties, including the mechanisms of curing agents toward self-curing cement-based, were discussed. It was suggested that adopting self-curing agents in concrete has a beneficial effect on hydration, improving the mechanical properties, durability, cracking susceptibility behavior, and mitigating autogenous and drying shrinkage. The interfacial transition zone (ITZ) between the curing agent and the cement paste matrix also improved, and the permeability is reduced.
Psychomotor domain involves physical movement, coordination and applied motor-skill areas, where substantial practices are needed in order to develop these skills overtime. Assessment of psychomotor domain can be carried out in aspects of speed, precision, distance, procedures. The attainment for program outcomes under psychomotor domain can be measured by using direct and explicit assessment. Majority of the lecturers lack the necessary practical experience to relate with fundamentals in order to practice and to give examples resulted in the students not being able to relate theory with practice and apply their knowledge to solve practical problems. This paper identifies the important attributes of students in attaining psychomotor skills in laboratory courses using a program outcome (PO) related to investigation aspects. Majority of the respondents indicated that they have acquired the necessary skills under psychomotor domain related to problem identification, procedure determination, apparatus usage, data collection, results interpretation and proposition of viable solutions. Direct attainment shows that the students passed the PO designed for the laboratory courses. Using relative important index (RII), important factors influencing students' attainment on psychomotor skills are the condition of equipment in the laboratories, lecturers' clear instructions before the student conduct experiment and the conducive environment to conduct experiment. A conducive environment with adequate equipment and supported by lecturers to carry out effective investigation give opportunity to the students to acquire and improve their psychomotor skills. This study is important to understand psychomotor elements attained by the students and how assessment is carried out effectively.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.