Water absorption property of cracked concrete and effect of water repellent treatment

2009-2010 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

Reciprocity of Social Influence

Humans seek advice, via social interaction, to improve their decisions. While social interaction is often reciprocal, the role of reciprocity in social influence is unknown. Here, we tested the hypothesis that our influence on others affects how much we are influenced by them. Participants first made a visual perceptual estimate and then shared their estimate with an alleged partner. Then, in alternating trials, the participant either revised their decisions or observed how the partner revised theirs. We systematically manipulated the partner's susceptibility to influence from the participant. We show that participants reciprocated influence with their partner by gravitating toward the susceptible (but not insusceptible) partner's opinion. In further experiments, we showed that reciprocity is both a dynamic process and is abolished when people believed that they interacted with a computer. Reciprocal social influence is a signaling medium for human-to-human communication that goes beyond aggregation of evidence for decision improvement

Durability of SHCC conclusions

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Self-healing of cracks in concrete

Repair of cracks in concrete is an important issue as cracks may endanger durability and reduce service life of reinforced concrete structures; however, large costs are generally involved if cracks are to be repaired and sometimes repair is even impossible due to inaccessibility. Therefore, in this project, we attempt to heal cracks autonomously by embedding an encapsulated healing agent into the matrix. Water sorption measurements demonstrated there is no significant difference between the efficiency of manual and autonomous crack repair. The self-healing efficiency was also proven through visualization of the water flow by means of neutron radiography. It was shown that manually and autonomously healed cracks were water tight as no water ingress into the crack was noticed. For untreated cracks fast ingress of water was noticed along the length of the crack

Durability of strain-hardening cement-based composites (SHCC)

IngenieursweseSiviele IngenieurswesePlease help us populate SUNScholar with the post print version of this article. It can be e-mailed to: [email protected]