Siliceous Aggregates Research Articles

Service life prediction model for biogenic acid corrosion: Advancement of life factor method for concrete sewer design

Current service life prediction models for concrete sewer design, including the widely used Life Factor Method (LFM), do not efficiently incorporate certain key corrosion contributing factors, such as material selection, concrete mix design, and sewer environment. This paper describes an advancement of the LFM model to cover these factors, broaden its usage, and improve concrete sewer design and applications. By integrating the first principles of the original LFM model, advanced knowledge from the literature, and results from field performance studies of various sewer concretes, a practical and relatively simple LFM model was advanced. With concrete mix design, oxide composition of all concrete ingredients, and sewer environmental and hydraulic conditions, the so-called ‘advanced LFM model’ could predict the corrosion rate of various concrete mixes. The model emphasised the influence of various modern binders, including calcium aluminate and calcium sulpho-aluminate cements, and various aggregate types including siliceous, calcareous, and alumina-based aggregates, when subjected to different sewer environments.

Moisture susceptibility of HMA containing high siliceous quartzite aggregates: a comparative study of different hydrated lime addition methods

ABSTRACT Hydrated lime (HL) has been used in asphalt mixtures to enhance the resistance to moisture damage in three ways, viz, as a filler, bitumen additive, and coating to aggregates. Quartzite aggregates are weaker in adhesion to asphalt binder due to higher silica content in chemical composition. This study compared three HL addition mechanisms to improve moisture-induced damage in hot mix asphalt made with high siliceous quartzite aggregates. Extensive experimental investigations were carried out, such as indirect tensile strength (ITS), tensile strength ratio (TSR), and fracture energy (FE), to compare the effects of HL addition with respect to conventional mixes. The ITS and TSR results found that HL-additive and HL-coating methods improved the resistance to moisture damage. Compared to control mixtures, HL-treated mixtures showed 20–25 percent higher TSR values. Meanwhile, the HL-filler method showed better resistance to fracture than the other two methods, offering better resistance to fracture in the field.

Investigating the potential of electrostatic charging to separate cementitious binder and sand

The environmental footprint of concrete is largely influenced by the binder. It is therefore of high interest to investigate the potential reuse of the binder retrieved by modern separation techniques. However, studies found that the recycled cement fraction (RCF) still contained a certain amount of siliceous concrete aggregates, which forms an obstacle in the upcycling of RCF. In this study, the potential of electrostatic separation as a method to separate cementitious binder (hydrated and unhydrated) and sand (silica) is evaluated. Different cementitious powders and silica (sand) were prepared, resulting in a total of 9 powders and 8 mixtures. The mixtures consisted of a combination of silica and one of the cementitious powders (50/50 wt%) with a particle size of the components <125 μm. The potential of the studied technique was evaluated through charging measurements and x-ray fluorescence (XRF). Silica was assumed to contain no CaO and the detected CaO was therefore assigned to the cementitious powders. Results showed that silica and silica-rich fly ash (FA) particles became negatively charged, blast furnace slag (BFS) particles remained largely charge neutral and all other cementitious particles obtained a positive charge. Through electrostatic separation an enrichment of the cementitious binder fraction for all mixtures was obtained at the negative electrode. FA-Silica achieved the highest enrichment (89.9%), CEM III/B-Silica the lowest (4.7%) and the hydrates were enriched ranging from 28.0 to 31.8%.

Low-Temperature Mixed Mode (I/II) Fracture Characterization of Polymerized Sulfur Modified AC Mixtures

In this study, asphalt concrete (AC) mixtures were modified with polymerized sulfur, using PG58-22 bitumen, and crushed siliceous aggregate. Modifications involved replacing the base binder with 20%, 30%, and 50% polymerized sulfur, compared to a control mix with no replacement. The mixtures were subjected to Single Edge Notched-Beam (SE(B)) fracture tests under mixed mode (I/II) conditions with notch offset value of 48 mm, with temperatures ranging from 0 °C to -20 °C. These tests, focusing on the mixtures' response to mixed mode loading, provided load-displacement curves, enabling the determination of fracture energy. Results indicated an increase in fracture energy for 20% and 30% sulfur-modified mixtures. However, a trend towards increased embrittlement was also observed, as fractures occurred at lower displacements. Significantly, higher sulfur content correlated with similar or decreased mixed-mode (I/II) fracture energy, suggesting an improved resistance to low-temperature cracking for lower replacement percentages.

Enhancing the Physical, Antimicrobial, and Osteo/Odontogenic Properties of a Sol-Gel-Derived Tricalcium Silicate by Graphene Oxide for Vital Pulp Therapies.

This study developed a sol-gel tricalcium silicate/graphene oxide (TCS-GO) composite and examined its physicochemical properties, antimicrobial activity, and osteo/odontogenic effect on dental pulp stem cells. Tricalcium silicate was synthesized and combined with graphene oxide at three different concentrations, namely 0.02%, 0.04%, and 0.08% w/w, while tricalcium silicate and mineral trioxide aggregate served as controls. The setting time, compressive strength, pH, and calcium ion release of the composites were evaluated, as well as antimicrobial properties against Streptococcus mutans and Lactobacillus acidophilus. Additionally, the viability of dental pulp stem cells; apatite forming ability; and the gene expression of Alkaline phosphatase, Dentin sialophosphoprotein, and Runt-related transcription factor 2 were assessed. TCS-GO (0.08%) showed a significantly shorter setting time and higher compressive strength when compared to MTA (p < 0.05). Additionally, tricalcium silicate and TCS-GO groups showed a higher release of Ca ions than MTA, with no significant difference in pH values among the different groups. TCS-GO (0.08%) also demonstrated a significantly stronger antimicrobial effect against Lactobacillus acidophilus compared to MTA (p < 0.05). ALP expression was higher in TCS-GO (0.08%) than MTA on days 3 and 7, while DSPP expression was higher in TCS-GO (0.08%) than MTA on day 3 but reversed on day 7. There was no significant difference in RUNX2 expression between TCS-GO (0.08%) and MTA on days 3 and 7. The TCS-GO (0.08%) composite demonstrated superior physicochemical characteristics and antimicrobial properties compared to MTA. Moreover, the early upregulation of ALP and DSPP markers in TCS-GO (0.08%) indicates that it has the potential to promote and enhance the osteo/odontogenic differentiation of DPSCs.

Effect of aggregate type on strength and deformation properties of high-strength concrete during heating

Introduction. High-strength concrete is widely used in contemporary construction. Expanded introduction of high-strength concrete necessitates the need for studying its behavior at high temperatures (in case of fire) in order to ensure the required fire resistance of load-bearing reinforced concrete structures made of high-strength concrete in terms of fire safety of buildings and structures.Aim. To determine the effect of aggregate types on strength and deformation characteristics of high-strength B100 concrete when heated to temperatures from 100 °C to 800 °C with a step of 100 °C.Materials and methods. Laboratory tests of prism strength and elastic modulus of basalt and granite high-strength concrete were carried out on prism samples in a heated state according to standard methods using special heating equipment combined with laboratory pressure equipment.Results. The authors determined structure behavior factors of basalt and granite high-strength concrete during heating, specifying the decrease in compressive strength and elastic modulus. Deformation diagrams during axial compression of high-strength granite and basalt concretes under heating were drawn.Conclusions. The dynamics of reduction in strength and deformation properties is similar for granite and basalt high-strength concrete under heating and is specific for silicate aggregate concretes. The elastic moduli of basalt high-strength concrete are higher than those of granite high-strength concrete, both at 20 °C and when heated, thereby determining the dependence of high-strength concrete deformation properties on the types of aggregates. Deformation diagrams during the axial compression of high-strength granite and basalt concretes showed specific character: unilinear – when heated to temperatures of about 300–400 °C, bilinear – at higher heating temperatures, therefore differing from traditional ideas and theoretical recommendations.

Assessing the influence of nano graphene oxide application in mitigating the adverse effects of runoff pH on the moisture susceptibility of asphalt concretes

The specifications of runoff entered the pavement has an essential role in the severity of moisture damage of asphalt concretes. Changing the pH of runoff has a negative impact on moisture damage and intensifies this damage in asphalt concretes. Accordingly, in this study, the impact of nanographene oxide (NGO) as a contaminant adsorbent and bitumen modified to decrease the destructive impacts of acidity changes in runoff has been investigated. For this purpose, limestone and siliceous aggregates, PG 64–16 bitumen, and NGO in two different contents (0.3 % and 0.5 % of the weight of bitumen) were utilized. To asses the strength of asphalt concretes with different runoff pH conditions, hydrochloric acid and sodium oxide were used to simulate acidic and basic runoffs, respectively. The indirect tensile strength (ITS) of asphalt concretes in different environmental states was tested to compare the severity of moisture sensitivity. Moreover, the surface free energy (SFE) elements of bitumen and aggregates were calculated utilizing the Wilhelmy Plate (WP) and the Universal Sorption Device (USD), respectively. The parameters of SFE theory were used to assess the mechanisms of water damage potential. The SFE results showed that NGO decreased the debonding energy (DE) of the mixtures. Changes in DE in neutral environments were minor, but with the polarization of environmental conditions, especially in basic states, these changes intensified. The application of NGO improved the total bitumen SFE, which reduced the possibility of moisture sensitivity as a cohesive failure. The results of mechanical methods indicated that the use of NGO in specimens with limestone and siliceous aggregate increased the indirect tensile strength ratio (TSR) in moisture conditions with different degrees of acidity. The mechanical experiment results also confirmed the SFE method's results that the effect of using NGO on increasing the TSR index at pH equal to 7 was minor, and it was intensified in acidic and basic waters.

Fly Ash-Based Geopolymer Concrete

This paper investigates the properties and applications of fly ash-based geopolymer concrete (GPC) using sodium hydroxide (NaOH), sodium silicate (Na2SiO3), and coarse and fine aggregates. The focus is on understanding the chemical interactions, mechanical properties, and durability of this sustainable construction material. Additionally, results from a rebound hammer test are discussed to evaluate the in-situ strength over time. Keywords : - Fly Ash, Geopolymer Concrete, Sodium Silicate, Sodium Hydroxide, Sustainable Construction, Mechanical Properties, Durability

Size of icy grains after a heating event in a protoplanetary disk

A heating event in a protoplanetary disk could sublimate H2O ice from icy aggregates. After the heating event, the temperature decreased, and the H2O vapor recondensed to form pure H2O grains through homogeneous nucleation or to form H2O ice layer covering the silicate aggregates left behind during the heating event. As a result, the size of the pure H2O ice grains could change from the commonly assumed value of 0.1μm of the aggregate composing ice-covered grains. Here, we numerically determined the final radii of the grains and the thickness of the H2O ice layer on the aggregates after the cooling. We also estimated the maximum radius of the aggregate consisting of the processed grains. If the size of the silicate aggregate left behind in the heating event was smaller than 0.073μm, continuous collisional growth of the aggregates of the processed grains was possible. If the size was larger than 0.073μm, a short cooling time depending on the heliocentric distance was required to achieve high mechanical strengths of the aggregates for the collisional growth.

Evolutionary Algorithms for Strength Prediction of Geopolymer Concrete

Geopolymer concrete (GPC) serves as a sustainable substitute for conventional concrete by employing alternative cementitious materials such as fly ash (FA) instead of ordinary Portland cement (OPC), contributing to environmental and durability benefits. To increase the rate of utilization of FA in the construction industry, distinctive characteristics of two machine learning (ML) methods, namely, gene expression programming (GEP) and multi-expression programming (MEP), were utilized in this study to propose precise prediction models for the compressive strength and split tensile strength of GPC comprising FA as a binder. A comprehensive database was collated, which comprised 301 compressive strength and 96 split tensile strength results. Seven distinct input variables were employed for the modeling purpose, i.e., FA, sodium hydroxide, sodium silicate, water, superplasticizer, and fine and coarse aggregates contents. The performance of the developed models was assessed via numerous statistical metrics and absolute error plots. In addition, a parametric analysis of the finalized models was performed to validate the prediction ability and accuracy of the finalized models. The GEP-based prediction models exhibited better performance, accuracy, and generalization capability compared with the MEP-based models in this study. The GEP-based models demonstrated higher correlation coefficients (R) for predicting the compressive and split tensile strengths, with the values of 0.89 and 0.87, respectively, compared with the MEP-based models, which yielded the R values of 0.76 and 0.73, respectively. The mean absolute errors for the GEP- and MEP-based models for predicting the compressive strength were 5.09 MPa and 6.78 MPa, respectively, while those for the split tensile strengths were 0.42 MPa and 0.51 MPa, respectively. The finalized models offered simple mathematical formulations using the GEP and Python code-based formulations from MEP for predicting the compressive and tensile strengths of GPC. The developed models indicated practical application potential in optimizing geopolymer mix designs. This research work contributes to the ongoing efforts in advancing ML applications in the construction industry, highlighting the importance of sustainable materials for the future.

Influence of porosity on the Umov effect in silicate and organic refractory aggregates

This study investigates the influence of porosity on the Umov effect, a phenomenon observed in the scattering of light from celestial objects. The Umov effect describes an inverse relationship between the degree of linear polarization and the object’s reflectance (geometric albedo). To study the dependence of porosity on the Umov effect, a wide range of porosity (i.e., from 0.64 to 0.99) is considered. Four types of aggregates, ballistic cluster–cluster aggregate (BCCA), ballistic particle cluster aggregate (BPCA) or ballistic agglomeration (BA), ballistic agglomeration with one migration (BAM1), and ballistic agglomeration with two migrations (BAM2) each having porosity 0.99, 0.87, 0.74, and 0.64 are considered in this study. The multi-sphere T-matrix code is utilized to calculate the linear polarization and geometric albedo (A) considering silicate and organic refractory compositions for monodisperse aggregates. The results are reported for six different wavelengths, ranging from near-ultraviolet to the visible spectrum. When the polarization maximum (Pmax) is plotted against the geometric albedo (A) on a logarithmic scale, an inverse relation is observed. This relation exhibits non-linear changes, fitted by a second-degree polynomial equation, as the porosity changes from 0.64 to 0.99. This finding constitutes one of the interesting results of our study. In addition, the study explores the effect of porosity (P) on the ratio between log(Pmax) and log(A), showing a non-linear relationship. A comparison is drawn between the results obtained from organic refractory compositions and amorphous silicate compositions, emphasizing the importance of porosity and wavelength in regulating the Umov effect. In addition, the research investigates how mixing affects the results at different wavelengths, assuming the aggregates are blends of organic refractory and amorphous silicate compositions. The computations have also been performed for polydisperse aggregates (considering BCCA, BA, BAM1, and BAM2 structures) at a wavelength of 0.45 μm for silicate compositions, which also showed a non-linear dependence as observed in the case of monodisperse aggregates.

Effects of surfactants on the physical properties of silicate binders and the mechanical properties of silicate-bonded foundry sand cores

In the foundry industry, casting sand cores require high and low peak and residual strengths, respectively, to achieve comprehensive optimal mechanical performance. The peak and residual strengths of sand cores are positively related, highlighting the criticality of balancing them. Thus, an innovative approach comprising the incorporation of anionic surfactants into the silicate binder was introduced to balance both factors. Additionally, the investigation of the effects of the anionic surfactants on the physical properties of the silicate binder, including its colloidal stability, surface tension and adhesion, revealed that four different anionic surfactants reduced the surface tension and adhesion of the silicate binders and reduced the residual strength of the silicate-bonded sand cores. Among them, 0.10 wt% lauryl ether phosphate reduced the surface tension and adhesion of the adhesive by 49.64 and 112 mN/m, respectively, and reduced the residual strength of the sand core by 0.035 MPa. However, increasing the dosage did not further reduce the residual strength of the sand core, although it continued to reduce its peak strength. Therefore, during silicate binder modification with anionic surfactants, the dosage of the anionic surfactant must be kept at ≤0.10 wt%, as this dosage exerted the most comprehensive optimal modification effect, which was attributable to the adsorption of anionic polymers onto the surface of the silicate aggregates. This adsorption weakened the network structure of the silicate aggregates and imparted the sand cores with appropriate mechanical properties during casting.

Development and performance evaluation of a novel high-ductility fiber-reinforced lime-pozzolana matrix for textile reinforced mortar (TRM) masonry strengthening applications

This paper discusses the development of a high ductility fiber reinforced lime mortar with deflection hardening behavior. In this study, polypropylene fibers have been incorporated in a cementless reference matrix comprising of Natural Hydraulic Lime, silica fume, siliceous aggregates and workability aid admixtures. The properties of the reference and fiber reinforced mortar compositions were assessed by means of standardized laboratory tests and scanning electron microscopy. The reference composition gave an average compressive strength of 12 MPa, rendering it suitable for structural applications. Fiber addition at a dosage of 0.76% by wt. of solids led to a reduction of the compressive strength; however, sufficient load bearing capacity was still achieved (8 MPa). More importantly, the fibers enabled the mortar to sustain useful load after damage initiation, improving post-peak ductility under compression and allowing the material to reach bending stresses up to 20% higher than the first-crack strength. To evaluate the practical application of the proposed materials, their use as matrices in textile reinforced mortar (TRM) strengthening systems was investigated through pilot applications on stone masonry. Diagonal compression tests were performed on 9 ashlar masonry wallettes, including both un-retrofitted and TRM-retrofitted specimens. Single-sided TRMs consisting of alkali resistant glass textiles embedded in either the reference or the fiber reinforced mortar were considered. Specimens retrofitted with TRM constructed using the fiber reinforced mortar, exhibited a remarkable ~ 270% increase in shear strength and > 50% higher deformation capacity, compared to un-retrofitted ones. The strength increment achieved with the reference mortar as the TRM matrix was 80%, with minimal impact on ductility. The TRM comprising the fiber reinforced mortar also showed superior performance in terms of ability to retain integrity at high levels of shear deformation. Overall, the results indicate that the use of fiber reinforced lime matrices in TRM systems applied to masonry substrates has the potential to substantially enhance mechanical performance under in-plane loading, even in cases where only single-sided retrofitting can be realized.

Automating the determination of low-temperature fracture resistance curves of normal and rubberized asphalt concrete in single-edge notched beam tests using convolutional neural networks

As materials undergo large-scale yielding or exhibit large sizes of fracture process zone in the crack tip region, multi-parameter fracture concepts should be employed to describe the complex crack-tip stress-strain fields. Fracture resistance curves (R-curves) are an established tool in characterizing the entire fracture process of such materials. However, for complex materials such as bituminous mixtures, the development of these curves is subject to experimental and computational intricacies. In this research, a framework is developed to automate the construction of R-curves for normal and rubberized asphalt concrete (AC) mixtures. AC mixtures are produced using PG58–22 and PG58–28 binders. Limestone and siliceous aggregates are used, and three binder contents are considered for the mixtures. Single-edge notched beam (SE(B)) fracture testing is conducted on AC beams with two different notch patterns. A convolutional neural network (CNN) model is developed and trained over 1260 test images with varying temperatures, notch geometries, and setups. The CNN model was used to detect the growing crack on the beam surface and each crack-detected image was sent to an image processing framework to measure the crack length. Crack extension increments were calculated and synchronized with test time and magnitude of load, load-line displacement, and cumulative fracture energy, and the R-curve could be constructed. A training accuracy of 0.91 was obtained for the model and a loss of below 0.10 as a result of a hyperparameter tuning indicating reliable classifications by the CNN architecture. The R-curves showed desirable agreement for control mixtures at temperatures of 0 °C and −15 °C. As the mixtures are rubberized, the R-curves showed favorable agreement in the crack blunting phase, transition zone, as well as the unstable propagation phase at −20 °C. Cohesive energy magnitudes were compared for the two methods with a Pearson coefficient of 0.81 while fracture rate and fracture energy magnitudes showed favorably close magnitudes with coefficients of 0.89 and 0.98 respectively.

The effect of eco-friendly functionalised acid sludge on thermo-rheological characteristics of bituminous composites

Used engine oil recycling produces acid sludge as a by-product of the acid-clay treatment. It is classified as hazardous waste material. This paper introduces a novel material named PS (powdery sludge) by functionalising the acid sludge. PS was used in a dry method to replace fine aggregates of the asphalt mixture. The effect of adding PS was investigated on the rheological behaviour of asphalt mastics by using dynamic shear rheometer for performing frequency sweep and multiple stress creep and recovery tests, bending beam rheometer, differential scanning calorimetry, and Fourier transforms infrared spectroscopy tests. Adding PS makes the mastic softer at low temperatures and stiffer at high temperatures, causing it up to 5 and 1.38 times more resistant to rutting and fatigue, respectively. Also, PS reduces temperature sensitivity, aging potential, and moisture sensitivity. Therefore, using PS as a replacement for siliceous aggregates in cold, moderate, and tropical regions is recommended.

Effect of coarse calcareous aggregates on corrosion of steel reinforcement in marine concretes

Finely ground limestone, perhaps as part cement replacement, has been shown to reduce concrete permeability and enhance strength. Whether this holds also for coarse limestone aggregates is of both practical and environmental interest, particularly the effect on corrosion of steel reinforcement. This is confirmed herein with exposure tests over 14 years for a range of concretes exposed to a high chloride environment. Importantly, these concretes also showed delayed initiation of reinforcement corrosion and lower long-term corrosion losses compared with similar concretes made with coarse igneous or siliceous aggregates. The observations are attributed to enhanced bonding between cement-hydration products and the limestone aggregate surfaces. These findings are important both for reducing environmental impacts and greenhouse gasses and for extending the durability of reinforced concrete structures.

Investigating the effects of ageing condition and type of aggregates on the properties of asphalt mixtures

In this study, asphalt mixtures made by steel slag (SSA), copper slag (CSA), limestone (LA) and siliceous (SA) aggregates were subjected to different aging conditions; and were evaluated using Marshall, indirect tensile strength (ITS), Cantabro abrasion loss and semi-circular bending (SCB) tests. Results reveal that the moisture damage, raveling and fracture resistance of asphalt mixture decrease with aging and the ITS and Marshall properties improve with aging. After 7-day long-term aging, the TSR of the mixtures made by LA, SA, SSA and CSA, decreases, 28.8%, 48.5%, 8.8% and 15%, respectively, while, the ITS in dry condition increases, 61.9%, 33%, 62% and 81%, respectively. The fracture properties and moisture damage resistance of asphalt concrete made by SSA and CSA are less affected by aging than those made by LA and SA. Statistical analysis revealed that the effect of aggregate type, aging condition and their interaction on the mixture properties is significant.

Análise paramétrica do comportamento termomecânico de lajes de concreto armado com diferentes agregados expostas ao fogo

Abstract Reinforced concrete structures, when subjected to fire, have their mechanical resistance reduced related to the behavioral change of the material. Many experimental and numerical research on the behavior of concrete exposed to fire have been carried out on beams and columns, with slabs being studied less frequently, mainly due to its size and consequently higher research costs. This paper carried out a numerical analysis of the thermomechanical behavior of reinforced concrete slabs exposed to fire, using finite element modeling. The parametric analysis carried out changing the aggregate type of concrete showed that when exposed to ISO834 fire curve, the displacement in the center of slab with siliceous aggregate was 47% higher than the slab with calcareous aggregate. Analyzing the crack opening, for slabs exposed to ISO834 fire curve, the first 1mm-cracks were noticed at 18min when using calcareous aggregate, while the slabs with siliceous aggregate started at 13min.

Decoding of lime-based binder materials of ancient vernacular Chettinad constructions in Southern India through microanalytical characterization

Vernacular Chettinad lime binder is widely popular in Southern India because of its quality in terms of durability over centuries and the fine glossy finishes attainable. However, its manufacturing technique concerning raw materials, the application process, and resultant characteristics are not explored or documented. The present study attempts to explore the mix compositions and application strategies of Chettinad lime plaster and mortar by characterizing samples collected from two ancient structures approximately 100 years old and in intact condition. Like any Chettinad constructions, the plaster in both buildings constitutes a base coat (coarser as observed) and a superior smooth glossy appearance finishing layer. The plaster samples collected from various locations from the two sites were thoroughly characterized for their physicochemical properties, microstructural characteristics, surface properties, mineralogical compositions, porosity, and pore size distribution. Analyses of the plaster samples suggest that the air lime and locally available, river-based siliceous aggregates were utilized as binder and aggregate, respectively, in ratios ranging from 1:1.51 and 1:2.57 in each of the buildings studied and correlated the ratio to their durability performance as well. Shell lime and organics such as curd and egg white were utilized to obtain the glossy plaster finish. The art of manufacturing and application of such a durable indigenous binder system is lost, not continued, and undocumented. The present study would act as (i) documentation that aids the continuation of the technique of the traditional binder production, as well as (ii) decoding the compositional differences of the plaster and mortar at various locations/applications, which would help in properly maintaining and restoring degraded portions of building structures by reproducing similar and compatible material.

Moisture susceptibility of chemically treated quartzite aggregates in hot mix asphalt

ABSTRACT Quartzite aggregates are widely available siliceous aggregates that are weak in adhesion with asphalt binder. This study focused on improving the moisture susceptibility of hot mix asphalt (HMA) using chemical treatments to quartzite aggregates. Hydrated lime (HL), nano-organosilane additive (NOS), and two silane coupling agents (SCA) were used to treat aggregates. Moisture susceptibility was investigated using different tests such as retained stability, indirect tensile strength (ITS), and fracture energy. Scanning electron microscope (SEM) analysis was conducted to identify surface modifications and the treatment mechanisms, it was observed that HL treatment forms the rough surface over the aggregate by precipitating CaCO3, on the other hand, SCA treatments make perfect hydrophobic nano-layer over the surface of the aggregates. After the boil test, Coating retention was quantified with image processing, and coating retention was increased to greater than 95 percent compared to control mixes (i.e. 40–45 percent). The tensile strength ratio (TSR) of HMA with treated aggregates was increased by 20–25 percent to control mixes. HL and SCA-1 showed better TSR and fracture energy ratio (FER). Based upon the study results, it was concluded that chemical treatment methods can able to reduce the moisture induce damage of HMA with quartzite aggregates.