To predict the structural behaviour of ancient stone masonry walls is still a challenging task due to their strong heterogeneity. A rubble-stone modeling methodology using 2D particle model (2D-PM), based on discrete element method proposed given its ability crack propagation by taking directly into account material structure at grain scale. Rubble-stone (ancient) tested experimentally under un...

Abstract Rockfill dams with stone pitching are specific hydraulic structures generally built in the early XXth century where stones used to be hand‐placed without mortar constitute upward and downward dam faces. Few studies have been carried out quantify critical role of stability against both static seismic forces. Herein, a numerical model is proposed pseudo‐static tests performed on four dif...

The modulus of elasticity of dam concrete is difficult to determine directly from tests due to the necessity for large specimens and testing machines. In order to study the applicability of simple elastic models for predicting the modulus from standard size specimens, tests were conducted on prisms of 45×45×90 cm fabricated with dam concrete (maximum aggregate of 120 mm). The tests on standard ...

A common decay scenario in old and new buildings was simulated: the effects on masonry structures of salt efflorescence or subefflorescence produced by the rise of saline solution. Eight different types of masonry wall each made up of a combination of different construction materials (brick, calcarenite and four types of mortar were combined as follows: pure lime mortar, mortar + air entraining...

Mortars with mud, gypsum and lime as binder have, since ancient times, been used for very different applications. The characterisation of these historic mortars was until 1970–1980 mostly based on traditional wet chemical analyses but the interpretation of these results is difficult and often impossible without a good knowledge of the nature of the different mortar components. More recently dev...

The mechanical response of stone masonry depends on the properties of the components and also on the typology created by the stone units and the mortar joints. While the influence of the component strength on masonry is relatively well studied, mainly due to the difficulty of varying the masonry typology systematically, few research studies have been devoted to its influence on masonry properti...

In this study, the researchers investigated the potential use of locally available waste materials from the lime stone quarry and the granite industry as a partial replacement of cement. Quarry sites and granite industry in the eastern province of Saudi Arabia produces tons of powder wastes in the form of quarry dust (QD) and granite sludge (GS), respectively, causing serious environmental prob...

The amount of ground olive stone available in Spain surpasses the needs construction industry for lightweight aggregate. objective herein is to generate a material, mortar, with different percentages stone, and then evaluate mechanical performance viability these materials manufacture elements used sector. To this end, an experiment was designed nine dosages three types cement. In all, 378 test...

As a result of intrastratal and interlayer flows produced water varying intensity, 25% oil gas wells are water-encroached in the world. Due to behind casing flow during operation generally reduces field's development efficiency. In study, 1-6% (weight) polyethylene polyamine (PEPA) was added which cement mixture will be prepared. The temperature dependence beginning end setting time obtained mo...