Abstract In this work, samples of fine-grained concrete were made with the addition TiO 2 powder in a range 1-3 wt% relative to cement. The photocatalytic properties for degradation pyrene solutions sodium dioctyl sulfosuccinate under UV irradiation investigated. To evaluate efficiency photodegradation, method luminescence analysis was used. It found that degree using reaches 25% after 120 minu...

In pavement structures that are often submerged by water, the damage to is caused loss of bonds or adhesions between aggregate and asphalt, type occurs due adhesion asphalt exfoliation granules so road cracked corrugated. To reduce release improve bond aggregates can be made with addition anti-exfoliating additives antistripping agent additives. This study aims analyze performance wear-coated c...

Waters’ variant of the Boneh-Boyen IBE scheme is attractive because of its efficency, applications, and security attributes, but suffers from a relatively complex proof with poor concrete security. This is due in part to the proof’s “artificial abort” step, which has then been inherited by numerous derivative works. It has often been asked whether this step is necessary. We show that it is not,...

In the field of construction, sustainable building materials are currently undergoing a process of technological development. This study aims to contribute to understanding the behavior of the fundamental properties of concretes prepared with recycled coarse aggregates that incorporate a polyethylene terephthalate (PET)-based additive in their matrix (produced by synthesis and glycolysis of rec...

In this study, 10–50% of porcelain tile polishing residue (PPR) was used as an additive or partial replacement cement in concrete. The consumption kept constant by correcting the amount sand for each mixture. Concrete workability (slump) reduced up to 88.72% when PPR replaced 30%, while it only 4.10% added concrete at same levels. Compressive strength 28 days increased 92.22% with 50% additive,...

In this note, we describe an error in the proof for CLRW2 given by Landecker et al. in their paper at CRYPTO 2012 on the beyond-birthday-bound security for tweakable block ciphers. We are able to resolve the issue, give a new bound for the security of CLRW2, and identify a potential limitation of this proof technique when looking to extend the scheme to provide asymptotic security.

M. Naor (Ed.): TCC 2004, LCNS 2951, pages 336 352, February 2004. c © Springer-Verlag Berlin Heidelberg 2004. Abstract. We consider compositional properties of reactive systems that are secure in a cryptographic sense. We follow the well-known simulatability approach of modern cryptography, i.e., the specification is an ideal system and a real system should in some sense simulate this ideal one...