Materials Literature
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The nuclei of unhydrated cement particles left in cementitious materials after maturation, can provide a self-healing capability to micro-cracked matrix under favorable conditions. This study is conducted to characterize self-healing efficiency on cracks in cementitious composites from the viewpoint of a geometrical p…
This work deals with the use of dredged marine sand (DMS) in pastes and mortars as construction material. Different materials from two Spanish ports were used: DMS-0 from Sant Carles de la Ràpita and DMS-A, DMS-B and DMS-C from Barcelona. The aim of the study was to assess DMS as addition (its influence on cohesion an…
This paper presents the application of the Integral Masonry System (IMS) to the construction of earthquake resistant houses and its experimental study. To verify the security of this new type of building in seismic areas of the third world two prototypes have been tested, one with adobe and the other with hollow brick…
No abstract available
The blends were successfully prepared by the copolymerization of 2,2-bis [4-(3, 4-dicyanophenoxy) phenyl] propane (BAPh) and epoxy resins E-44 (EP) in the presence of 4,4′-diaminodiphenyl sulfone (DDS) as curing additive. With the loading of BAPh in blends increasing from 10% to 50%, the excellent flame retardancy pro…
The mechanical properties of centrifuged Al-Si-B composites containing aluminum diboride and aluminum dodecaboride particles were studied using optical and scanning electron microscopy (SEM), hardness tests, and nanoindentation. SEM was used to further analyze the Rockwell indentations, while nanoindentation experimen…
Demolition and dismantling have been traditionally considered an obstacle to overcome before starting new constructions, up to the inclusion in the industry of the concept of sustainable development, which implies impacts minimization, recovery maximization and the legislation to warrant such premises. For demolitions…
We performed an archaeometric study of the ceramic materials from the façade of the church of Santa Maria del Carmine in Pavia (Italy). We obtained useful information about the firing temperatures, the provenance of raw materials and the type of oven used. The ceramics used in the façade are mineralogically rich in qu…
This paper shows the results of a laboratory phase for the determination of the 1limits of infrared thermography in detecting internal defects in wood and, furthermore, it analyses how the density of this material can influence the surface temperature displayed in a thermogram. To this end, experimental work is carrie…
A new numerical approach was developed to study the mechanical properties of cementitious granular materials. At first, an ellipsoid based method was developed to generate aggregate particles of arbitrary shape. These aggregate particles were then mixed in a cement paste using the algorithm-based program HADES and an…
Abstract Zinc-aluminum coatings were prepared; parts of them were sealed with an organic coating; and the behavior and mechanism of corrosion were studied by means of in situ plates test, salt spray test, and electrochemical impedance spectroscopy. A scanning electron microscope was used to assess the surface of the z…
Reed is a plant species very similar to common cane which is widespread all over the Earth. It is an ecological and sustainable material which is low-cost, aesthetically attractive, easy to obtain and install, and can be used in different construction systems. This work analyses the acoustic properties of reed panels…
Post earthquake field investigations reveal that frames with inferior detailing are vulnerable to seismic actions. The presence of a large building stock in Turkey, which is vulnerable to an imminent earthquake, entails fast, relatively easy, and feasible alternative strengthening methods. In this paper, the strengthe…
The need to diminish the final amount of waste produced in construction and demolition processes in plants of concrete prefabricated products, has made us analyze the mechanical behaviour of concrete made with recycled aggregate coming from discarded concrete prefabricated units. The aim was to find a possible use for…
The aim of this study was to investigate the effect of montmorillonite as additive on the properties of cement paste and mortar. Montmorillonite was used at 0%, 5%, 10% and 15% additive by weight of cement, and the water/cement ratios of 0.45 and 0.55 are considered for the cement pastes and cement mortars with the sa…
In this study, some mechanical and durability properties of concrete specimens, with a water/cement (w/c) ratio of 0.47 and having a reference slump of 40 mm, produced by addition of steel fibers (SF) and/or polypropylene fibers (PF), were investigated. The additions of SF were 20 kg/m3 and 40 kg/m3 and PF additions w…
Synthesizing topologies of compliant mechanisms are based on rigid-link kinematic designs or completely automated optimization techniques. These designs yield mechanisms that match the kinematic specifications as a whole, but seldom yield user insight on how each constituent member contributes towards the overall mech…
This study aims to investigate the relation of hazard rate in terms of the corresponding reliability for composite laminates under constant-amplitude cyclic stresses when the static strength is described by the Weibull distribution and the S-N curve is given. On the basis of the strength-life equal rank assumption, Ya…