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In this research, an experimental study of the properties of self-compacting mortar with Nano blast furnace slag has been done. Nano blast furnace slag was prepared and used as an additive to the self-compacting mortar in (1, 2, 3, 4, 5) % by weights cementitious sustainable materials. Blast furnace slag was crushed and milled until achieving to Nano particle size, Nano particle size was provided and checked by Laser Particle Size Analysis, AFM, and FESEM. Self-compacting mortar was tested at 7, 28, and 90 days’ age. Fresh properties of self-compacting mortar were determined by using mini flow table test and mini v-funnel test. The experimental results of self-compacting mortar shown that the mechanical properties include compressive strength, flexural strength, and direct tensile strength were increased as Nano powder percentage increases. The physical properties such as total water absorption and porosity was decreased as a Nano powder percentage was increased. While the density of self-compacting mortar increased as Nano powder percentage increase. The microstructure homogeneity and Nano powder distributions of self-compacting mortar were explained by using FESEM.

In this paper, the properties of high performance concretes modified by polymer were studied. Liquid synthetic styrene-butadiene rubber (SBR) was added (5%, 10% and 15%) by weight of cement to high performance concrete (HPC) to elucidate the effect of the polymer additive to their properties. The compressive strength, splitting tensile strength, flexural strength, porosity, dry density and total water absorption were measured. Thermal conductivity, thermal diffusivity and specific heat of HPC is also measured. In addition, SEM micrographs are compared reference and polymer modified HPC. The results show that there is an improvement in the workability for HPC after the addition of the polymer. Furthermore, the density of the set concrete was increased and both the porosity, total water absorption was decreased. Thermal conductivity, thermal diffusivity, and specific heat show improvement after polymer addition, which indicate better endurance. The SBR modified HPC, exhibits a significant improvement in splitting tensile strength and flexural strength, although it was at the expense of the compressive strength to some extent. The HPC has shown balanced microstructure before and after the addition of polymer, although they noticed improved on the ductile properties.

This paper aims to investigate the influence of utilization micro cement kiln dust as a sustainable materials additive in order to reduce the voids and micro cracks in the cementitious mortar materials which cause a drastic reduction in the load carrying capacity of the element. Its therefore very important to decrease the pores and enhance the mechanical strength of the cementitious composite materials. In this article, the properties of self-compacting mortar containing micro cement dust additive was experimentally assessed. Micro cement dust powder was added to the self-compacting mortar in (1, 2, 3, 4 and 5 %) percentage by weight of cement to be used as cementitious sustainable materials. The experimental results indicated that the modification and enhancement of the workability of fresh mixture and the mechanical strengths of self-compacting mortar were increased as micro cement dust additives increases. Also; the water absorption and total porosity were decreased with increases of micro cement dust powder.

The goal of modern industries is to use low-cost and environmentally friendly materials, whether natural or industrial, especially for engineering and medical applications. The present work includes the manufacture of a composite material of lamination resin reinforced with two types of particles, an organic type (animal horn particles and bamboo particles) and the second type inorganic (zinc oxide particles), according to the selected weight ratios (2,4,6, and 8) %wt. and all the particles were at a granular size (5 µm). The organic particles were prepared manually according to special steps to obtain the best results. The prepared particles were checked manually by examining the particulate size by the vibrating sieve and the shape of the particles through the (SEM) test. As for the mechanical behavior of the composite material, it was studied through (tensile, shock, and hardness) tests. The results of the examination showed that the best addition of particulate matter was for the inorganic particles (zinc oxide) and all tests if compared to the organic particles. The best ratio of zinc oxide particles is (6%wt.) as the results of the tensile, shock, and hardness tests were (59 Mpa, 4.4 J, and 95) respectively. Therefore, this ratio is suitable for use in various engineering and medical applications such as foot prosthetics.