Investigation the effect of different nano materials on the compressive strength of cement mortar

Investigation the Influence of adding Nano –Yttria Partially Stabilized Zirconia (NZrO2-5wt%YPSZ) on the Physical and Mechanical Properties of Concrete

“…The absence of these products is due to the non-displacement of nanosized particles (20-45 nm) in the cement matrix due to agglomeration, which results in voids [20]. As a result, the porosity of the concrete increased, which led to a higher rate of absorption, and this phenomenon is supported by the analysis of Field Emission scanning electron microscopy (FE-SEM) shown in Figures (8,9) The microstructure comparison between the reference sample and the sample containing (NZY) is illustrated in Figure (10) and Figure (11) shows the distribution of nanozirconia particles in the concrete sample through an image Energy dispersive x-ray test (MAPING EDX).…”

“…The main cause of the use of nanoparticles in traditional building materials, It is to obtain strong and lightweight compounds that improve the physical and mechanical properties of cement when adding in appropriate quantities with a slight decrease in the ability of concrete, the most widely used materials are nano-zirconia and nano-alumina, which improve the mechanical and physical properties of concrete [6]. In various studies, it has been documented that incorporating zirconia oxide nanoparticles in ordinary portland cement (O.P.C) as partial replacement leads to a substantial increase in split tensile strength, and overall concrete strength, This enhancement is attributed to the rapid consumption and release of Ca(OH)2 during cement hydration, facilitated by the high reactivity of zirconia particles ZrO2Consequently, cement hydration is accelerated, resulting in the generation of abundant hydration products, improved packing density of cement particles, and a reduction in the volume of large pores within the cementing paste [7] Several studies have evaluated the effect of adding different types of nanomaterials, such a s ZrO2, SiO2, Al2O3, and CaCO3, at varying ratios (1%, 1.5%, 3%, and 5%) as partial substitutes for ordinary Portland cement to enhance the compressive strength of concrete, According to the findings of these studies, the addition of nanoparticles to cement increases the compressive strength of concrete compared to ordinary concrete [8]. The properties of concrete can be enhanced through various methods, including the use of concrete nanomaterials (NM), which can improve concrete pore structures, accelerate the formation of C-S-H gel, and enhance mechanical properties.…”

Preparation and characterization of indoor heat blockage panel composites made of polyurethane-hybrid-foam-concrete and rice-husk-ash

“…The samples were then put to the test for heat absorption. To prepare the samples for the mechanical properties to test using ASTM C-109-02, a mold of 50 × 50 × 50 mm was employed [ 38 , 39 ].…”

Improvements of mechanical and physical features of cement mortar by nano Al2O3and CaCO3 as additives

“…Since poor dispersion and the agglomeration phenomena of the nanoparticles in the slurry and the cement matrix." Jawad et al [29] determined the impact of various nanomaterials on the CS of cement mortar. Four amounts of 𝐴𝐿 2 𝑂 3 with nanoparticles were utilized as a partial substitution of 1, 1.5, 3, and 5 percent by cement's weight.…”