To decrease the bio toxicity of heavy metals a thiol functionalized nano silica SiO2 SH was adopted to remediate the soil contaminated by lead Pb cadmium Cd and copper Cu The remediation effect of SiO2 SH on contaminated soils was investigated by the uptake of the heavy metals into lettuce and pakchoi in pot experiment
Nano silica is widely utilized as a partial replacement for cement and a lot of research is carried out This paper reviews the past studies in which nano silica is utilized in various building materials such as cement mortars normal concrete and special concretes The fresh concrete properties strength and durability of the material are the
The hydration process of Ca3SiO5 C3S cement is investigated and accelerating effects of adding colloidal silica CS are established CS accelerates dissolution of the C3S phase and renders a more rapid formation
Background Soil contamination with heavy metals poses a significant threat to plant health and human well being This study explores the potential of nano silica as a solution for mitigating heavy metal uptake in Calendula officinalis Results Greenhouse experiments demonstrated 1000 mg•kg− 1 nano silica caused a 6% increase in soil pH compared to the
In the available literature it can be found that with the addition of nano silica in cement or concrete even at small dosages nano silica can significantly improve the mechanical properties of cementitious materials [7] For instance Nazari and Riahi [8] showed that a 70% compressive strength improvement of concrete can be achieved with an addition of 4% by
Materials Ordinary Portland Cement used was OPC 53 as classified by the IS 269 2015 standard IS 12269 2013 Table 1 shows the physical properties of cement Indian Standard IS 4031 5 1988 Methods of Physical Tests for Hydraulic Cement of Indian silica NS particles have an average size of 12 nm
This study evaluates the suitability of superabsorbent polymer SAP concrete modified by nano silica NS for enhancing durability Tests were conducted to analyze chloride impermeability and frost resistance effects on modified SAP concrete The coupling impact of ion erosion and freeze thawing was also evaluated Mercury intrusion
Title Colloidal Nano silica for Low Carbon Self healing Cementitious Materials Author s Su Publication Web Session Volume Issue Appears on pages s Keywords DOI Date 3/28/2022 Abstract The concrete industry is one of the primary sources contributing to the world s carbon dioxide CO2 emissions Therefore the researcher and
Extensive reviews have come up that specified the use of nanomaterials for growth disease protection and mitigation of stress in crop plants Aslani et al 2014; Khan and Rizvi 2014; Khot et al 2012; Prasad et al 2017; Zhao et al 2020 Nanosilica or silica nanoparticles as the name suggests is one of the innovations of nanobiotechnology and their
Nano silica and mineral admixtures both of which can bolster the composition s resilience [12] Notably 11 Nano silica s pozzolanic properties lead to the formation of nely hydrated phases like C S H gel contributing to the densication of microstructure and the enhancement of mechanical characteristics Comparative studies have
The use of 1000 mg/kg nano silica resulted in an % reduction in EX Pb % in EX Cu % in EX Zn % in EX Ni and % in EX Cr compared to the control treatment Overall our study
Nanomaterial composite gel has been successfully applied for enhanced oil recovery EOR However the fatal flaw of using bare SiO 2 nanoparticles in polymer gel systems is their agglomeration and poor dispersion stability In this paper hexadecyl trimethyl ammonium bromide CTAB modified SiO 2 nanoparticles for the reinforcement of PAM/PEI polymer gels
The rapidly rising population is calling for the production of more food yet biotic and abiotic stresses caused by pests and climate change substantially diminish crop yields This issue may be partly solved by applying silica nanoparticles Nanoparticles are small sized particles ranging from 1 to 100 nm that possess enhanced physicochemical properties
It is reported that the hydrophilic nano silica HNS as a low cost and high efficient nano material can mitigate the problems faced by chemicals in chemical flooding which captures the attention of researchers [7] Due to the unique characteristics such as the nano dimension and high surface to volume ratio the HNS is suitable for injection into reservoirs
Achieving the Super Gas Wetting Alteration by Functionalized Nano Silica for Improving Fluid Flowing Capacity in Gas Condensate Reservoirs ACS Applied Materials & Interfaces IF Pub Date 2021 02 26 DOI /
Ultra high performance concrete UHPC integrates cutting edge nano additives fibers and cementitious materials which is a representative heterogeneous material and exhibits distinctive multi
This paper discusses some important aspects related to the addition of nano silica to the oil well cement and alteration in different properties of the cement such as rheological properties porosity permeability and setting time Fig 1 Various discussions have taken place in the past few years as included in this paper regarding the importance of having better
Nano silica is a highly effective pozzolanic material consisting of extremely fine silica that is added to cement slurries for oil field civil engineering and construction applications [30] Nano silica consists of vitreous particles whose size is approximately 1000 times less than the average cement particle size [30] It improves strength
Nano silica particles have been successfully synthesized from Iraqi western region sand Al anbar sand by SOL GEL method the raw materials for this work were sodium hydroxide concd sulfuric acid de ionized water in addn to the Iraqi sand In this method; solid sodium silicate is dissolved in deionized water and then pptd by adding concd
Materials Ordinary Portland Cement used was OPC 53 as classified by the IS 269 2015 standard IS 12269 2013 Table 1 shows the physical properties of cement Indian Standard IS 4031 5 1988 Methods of Physical Tests for Hydraulic Cement of Indian silica NS particles have an average size of 12 nm
