Stone Aggregate Research Articles

Kuat Lentur Beton Menggunakan Agregat Batu Petangis dan Pasir Semboja dengan Penambahan Botol Plastik

Utilizing local materials is a strategic step in optimizing concrete production in East Kalimantan. There's an example supply of petangis stone and semboja sand aggregates. Apart from that, using various wastes, including plastic waste, in concrete production is also a current issue. This study aims to investigate the potential substitution of fine aggregates with PET and combine them with local materials, to understand their impact on the bending strength of concrete. The study tested concrete bending strength using 15x15x60 cm blocks with PET plastic substitutions at 0.30%, 0.45%, and 0.60% of sand weight, comparing them with PET-free concrete. The research results show that adding 0.30 and 0.45% PET plastic bottles causes a decrease in the flexural strength of concrete. This is related to the influence of changes in the composition of the concrete mix, including factors such as uneven aggregate distribution and less-than-optimal material binding. Flexural strength increases at a percentage of 0.60% by 3.7% or 3.3 MPa and shows better results than normal concrete. So the PET percentage can be used as a recommendation in making concrete using local materials such as petangis stone aggregate and semboja sand.

Effect of curing conditions and formulation on the adhesive strength of stone-siporex mortar composite

Background: Adhesive strength is one of the most important properties of the hardened mortar, and influenced by mortar workability (i.e. mortar water content), and substrate roughness surface degree. Objective: This study aims to measure the adhesion strength between three different hydrated aerial lime mortars, and the two most common building units in old and modern building in Loire valley in France: Tuffeau and Siporex, under different relative humidity (12,66,98%) and curing periods (7,28,90 days). Materials and Methods: These mortars include: B/F (1:5.6: Moisture=46 %, aggregate stone powder pass sieve NO.2mm), B/W (1:5.6: Moisture=44 %, aggregate stone powder pass sieveNO.2mm and retained on sieve NO. 0.16mm), and B/F/M (1:5.6: Moisture=35%: superplasticizer water reducer Melment F10 (2.5% of lime amount), aggregate stone powder pass sieve NO.2mm). Numerous complementary techniques have been used to achieve this study, such as: x-ray diffraction, coupled plasma optical emission spectrometry, mercury intrusion porosimetry, mortars axial expansion by consolidation apparatus, and Proceq-DY-215 apparatus for adhesive strength measurement. Results: The results showed that expansion of B/F, B/W, and B/F/M has little effect on their adhesion strength with Tuffeau /Siporex substrates. Also, the adopted relative humidity variations had a limited effect on the adhesion strength of B/W along the curing periods (7, 28, and 90 days), with noticeable effect for the other mortars. Conclusions: The conclusions referred to the important impact of the degree of substrate surface roughness on the adhesive strength of all used mortars, where the use of Siporex as substrate recorded a clear advantage compared to Tuffeau under all used relative humidity and curing periods.

Study on Controlled Low-Strength Materials Using Ultra-Rapid-Hardening Cement and Stone Sludge for Backfill and Subbase Application in Road Excavation and Restoration Work

A significant amount of stone sludge is generated as a by-product during the production of crushed stone aggregate, and most of it is disposed of in landfill as waste. In order to recycle this stone sludge, this study evaluated a controlled low-strength material (CLSM) using ultra-rapid-hardening cement and stone sludge for application as backfill and subbase material for road excavation and restoration work. In addition, considering the limited construction time of excavation and restoration work in urban areas, backfill and subbase materials must simultaneously satisfy conditions of fluidity, workability, quick curing time, and certain levels of strength. Therefore, in this study, CLSM was manufactured according to various mixing ratios and flow, slump, and compressive strength tests with age were evaluated. Additionally, the change trend in the microstructure of the CLSM with age was analyzed. Through indoor experiments, the optimal mixing ratios for backfill and subbase CLSM were determined, and field applicability and performance of field samples were evaluated through small-scale field construction. It was concluded that CLSM, which contains a large amount of stone sludge, can be sufficiently applied as a backfill and subbase material for excavation and restoration work if appropriate admixtures are adjusted according to the weather conditions at sites.

Evaluation of The Density of Class A Aggregate Foundation Layer Work With The Sand Cone Method On The Road Improvement Project of The East Tombatu Sub-District, Kapleng Road

Road foundation is the main structural layer above the foundation, which can be a single-layer subgrade or ready-made subgrade, with delivery, preparation, transportation, distribution, irrigation and compaction of selected natural stone or gravel aggregates. Therefore, for Kapleng Road, East Tombatu Subdistrict, it is necessary to use the sand cone method to assess the compaction of class "A" base aggregate in order to achieve a density level in accordance with predetermined specifications. One of the problems that can cause poor quality is improper compaction. As a result, one of the roads may deteriorate, due to the compaction of aggregates that do not meet the specifications that have been input. Therefore, to test the aggregate density, the sandcone method is used to test the aggregate density. In this case on the foundation layer of class A aggregate. The location of this study is in East Tombatu Subdistrict, Jln Kapleng de it is clear that all points meet the minimum depth requirements of 10-15 cm for sand dune test pits. Implementation of Class A Aggregate Foundation Layer on Road Improvement project of East Tombatu sub-district Jalan Kapleng The desired density level for Class A aggregate layer is at least 100% during field inspection, all of them meet the requirements. In the type A aggregate layer, the moisture content is an optimum of 6.5% with a range of 6.5% - 10.5%, for testing the moisture content of the Class A Aggregate Foundation Layer has met the existing requirements If the water level in the field exceeds the air reserve level or maximum, the material must be dried.

Analysis and evaluation of dimension stone and crushed stone aggregate of Herzegovina (and beyond)

Analysis and evaluation of dimension stone and crushed stone aggregate of Herzegovina (and beyond)

Using cross-linked polyethylene (XLPE) waste in production of concrete: An experimental study

This paper investigates the feasibility of using cross-linked polyethylene (XLPE) waste as a partial replacement of conventional stone aggregates to produce concrete. Specifically, the effects of XLPE waste content (0, 5, 10, and 15 vol% of coarse and fine aggregates) and water-to-cement (W/C) ratio (0.45, 0.50, and 0.55) on the fresh properties (slump, unit weight, and air content) and hardened properties (bulk unit weight, ultrasonic pulse velocity, uniaxial compressive strength (UCS), split tensile strength (T), and flexural strength (F)) of concrete were investigated. Moreover, scanning electron microscopy (SEM) analysis was performed to study the interfacial transition zones (ITZs) at the different conditions. The results show that the addition of more XLPE improves the workability or slump (by 8% to 51%), decreases the unit weight (by 0.16% to 2.20%), but does not noticeably affect the air content of the fresh concrete (all ∼1.5%). Increasing the XLPE content results in a decrease of the UCS (by 23% to 60%) but improves the ductility and increases the T/UCS (by 19% to 144%) and F/UCS (by 22% to 174%) ratios of the concrete. The decrease of the UCS with a higher XLPE content is mainly due to the weaker ITZ between the XLPE and the binder. The study clearly indicates that the XLPE waste can partially replace the conventional stone aggregates to produce concrete for different applications specified by industry.

Separability of cement stone and aggregates in concrete recycling

AbstractBased on a growing demand for mineral aggregates and high CO2‐emissions of the cement industry, an entire separation of cement stone and original aggregates from concrete waste is desirable. As described in literature, aggregates can be reused e.g. in ready‐mixed concrete and ground cement stone can substitute limestone for clinker production. Thus, extensive test series were carried out to determine specific energies needed to crush concrete waste aggregates. Concrete mixtures with different compressive strengths and maximum grain sizes were thermally damaged using different temperature levels and numbers of thermal cycles. To evaluate the separability quantitatively, different properties from impact‐tests and static tests were derived and compared. An increasing number of thermal cycles, increasing temperature level, low compressive strength and small max. grain size enhance separability. It is found, that parameters from impact‐tests and static tests can be used equally good, even if the both tests include different deterioration mechanisms. From the knowledge of the specific crushing energy a model to estimate ball‐sizes for mills is proposed. Finally, grinding/milling of small grain fractions (e.g. 2/4 or 8/16) improves the quality of recovered aggregates and cement stone.

Evaluating the Weathering Effect on Granite, Limestone and Uncrushed River Stone Aggregates for Road Constructions

The lack of excellent aggregate materials has become a major issue in Sarawak. River stone, abundant in many places of Sarawak, can be used as an alternative aggregate material, minimising the reliance on high-quality aggregates like granite in the production of an affordable and sustainable road pavement. Weathering also deteriorates aggregate materials. This project aims to investigate the durability of granite, limestone, and uncrushed river stone aggregates with regards to weathering effects. The aggregates are subjected to two conditions, i.e., normal condition (without wetting and drying cycles) and wet-dry condition (with wetting and drying cycles). The physical properties of aggregates are determined by the Flakiness Index, Elongation Index, and Specific Gravity. Weathering effects on aggregates are determined using laboratory tests such as Aggregate Impact Value (AIV), Aggregate Crushing Value (ACV), and Los Angeles Abrasion (LAA). Weathering cycles have been found to have a minor impact on aggregates in the short term. Overall, the test results indicate that wetting and drying circumstances have a negligible effect on aggregates over a short period of time. The materials' physical attributes all meet JKR requirements. The Aggregate Impact Value (AIV), Aggregate Crushing Value (ACV), and Los Angeles Abrasion (LAA) values are nearly constant across the wet-dry state for all aggregate kinds. Despite the wet-dry situation, the AIV, ACV, and LAA tests demonstrate that specific aggregate materials retain their durability when compared to other aggregate materials. As a result, granite is the most durable aggregate in terms of AIV and LAA when compared to limestone and uncrushed river stone, while uncrushed river stone is more durable in terms of ACV when compared to granite and limestone.

Impact of the Portland Cement Activation Method on the Properties of Cement Stone and Fine-Grained Concrete

Statement of the problem. In the article the experience of scientific research in the field of cement activation is summarized. It is noted that concretes modified with activated binder are characterized by increased chemical contracture, which leads to cracking in the contact zone of cement stone and coarse aggregate. To obtain high-quality structure of such concretes requires the use of additives, compensating for the contracting. Results. In the experimental part of the work two ways of cement activation are considered: mechanical one in the disintegrator and hydro-mechanical one in the rotary-pulsation apparatus. Cement activation has been performed both without additives and in combination with the expanding additive which was introduced into a composition of fine-grained concrete with the purpose of compensation of contractility deformations. Conclusions. Based on the analysis of the influence of cement activation and extending additive on strength properties, water absorption and contracture of fine-grained concrete preliminary conclusions about the possibility of the production of concretes with increased indices of durability by means of using of mechanically and hydromechanically activated cement have been made.

Reseaching properties of the roller compacted concrete using steel slag as coarse aggregates in constructing the pavement structure of the road

Aggregates form the skeleton structure of concrete and significantly affect its mechanical properties. When aggregates are used in roller-compacted concrete (RCC), steel slag with a rough grain surface and honeycomb structure produces higher friction between particles and more difficulty in achieving the required compaction than traditional crushed stone aggregates. This study investigated the strength of RCC using steel slag (SSA) to replace traditional aggregates with replaced volume contents of 0%, 50%, and 100% in constructing road pavement structures. The results showed that the higher the volume content of SSA used, the lower the strength of the RCC achieved. The flexural strength of RCC using steel slag with replaced volume contents of 50% and 100% decreased by 5.5% and 8.7%, respectively, compared to that of RCC using traditional crushed stone aggregate at the same curing time of 28 d. RCC using steel slag with a replaced volume content of 50% was qualified to construct a road with category IV and below.

Experimental Investigation on the Influence of Superplasticizer on Mechanical Behavior of Recycled Aggregate Concrete

Needs for renovation and efficient use of available land space have led to the destruction of numerous deteriorated civil structures. Consequently, a huge amount of concrete demolished waste is generated annually worldwide. This demolished concrete waste has created an extra burden on the environment and landfills, making the development projects unsustainable. Demolished waste can be recycled and reused for sustainable development and to reduce the demand for fresh natural aggregates (NA). However, the poor performance of recycled aggregate concrete (RAC) compared to natural aggregate concrete (NAC) may be a significant drawback in the recycling and reusing of demolished concrete wastes. This limitation can be overcome by using a superplasticizer, which has the ability to improve different mechanical properties of concrete. The objective of this paper is to assess the effects of the superplasticizer on the mechanical characteristics of RAC. Concrete specimens were prepared to have replacement ratios (0%, 25%, 50%, and 100%) of fresh NA by recycled stone aggregates (RSA) and recycled brick aggregates (RBA). Half of the prepared concrete specimens were admixed with the superplasticizer, having 15% water reduction for concrete mixes. The obtained test results encourage the use of superplasticizers for improving the mechanical properties of RAC. It is observed that fresh, natural coarse aggregates in a concrete mix can be replaced with 50% RSA and 25% RBA with the addition of the superplasticizer without compromising the mechanical performance.

Wear resistance analysis of steel slag aggregates based on morphology characteristics

Steel slag can be utilized in the wearing course of highway asphalt pavement. However, further research is needed to explore the impact of steel slag on the wear resistance of asphalt pavement. This study aimed to evaluate the wear resistance of two steel slag samples and compare them with three stone aggregates based on morphological characteristics. The Los Angeles abrasion test was conducted at different revolution levels, and the micro-morphology characteristics of the aggregates were analyzed through image analysis using six morphology parameters. The results showed that the steel slag samples had the lowest Los Angeles abrasion rates, indicating their superior hardness and wear resistance compared to limestone and granite aggregates. The steel slag aggregates also exhibited higher values in morphological indices of arithmetic mean height Sa, peak apex density Spd, and arithmetic mean curvature of peak apex Spc, indicating a rougher surface, more contact points and more durable wear resistance. Fluctuations were observed on variation curves of the maximum height Sz, surface skewness Ssk, and surface sharpness Sku of the steel slag during the abrasion process, suggesting the presence of numerous pits and spikes that contribute to the skid resistance of the steel slag asphalt mixture. The arithmetic mean height Sa, peak density Spd, and arithmetic mean curvature of peak apex Spc showed a consistent decrease over the number of revolutions, making them reliable indices for future research on the wear resistance of steel slag asphalt mixtures. Overall, this study provides a basis for further research on investigation the correlation between the morphology changes of steel slag aggregates and the anti-skid performance of pavement wearing courses.

Experimental Torsional Capacity of Plain Concrete Beams Made from Crushed Clay Brick and Recycled Brick Concrete as Coarse Aggregate

Concrete was made with four different types of coarse aggregate, i.e., natural stone aggregate concrete (NSAC), crushed virgin clay brick aggregate concrete (VBAC), crushed recycled brick concrete aggregate concrete (RBAC), and crushed recycled stone concrete aggregate concrete (RSAC). Beam specimens prepared from these four types of concrete were subjected to pure torsional moment up to failure. From this experimental procedure, ultimate torque at failure along with twisting angle were observed. From the torque vs. twisting angle curves, torsional stiffness and torsional toughness were also evaluated for these four types of concrete. It was observed that ultimate torque of VBAC and RBAC was 95% and 90% of that of NSAC, respectively. The torsional toughness of VBAC was found to be 68%–72% of that of NSAC. In addition, experimental torques were compared with predictions of torsional strength as per five commonly used models. For VBAC, the ultimate torque prediction made by skew bending theory was found to be the closest to the experimental findings.

Innovative Use of Waste PET-Derived Additive to Enhance Application Potentials of Recycled Concrete Aggregates in Asphalt Rubber.

Polyethylene terephthalate (PET) drinking bottles, rubber tires, and concrete are the very common municipal solid wastes, which are usually disposed of at landfills and stockpiles and cause continuous damage to the environment. Some studies have indicated that waste PET can be chemically converted into an additive for improving the overall properties of asphalt pavement incorporating natural aggregates, especially the moisture-induced damage resistance. However, it is not clear whether this PET additive still works for asphalt rubber containing recycled concrete aggregates (RCA). To well reveal this issue, this study first adopted a similar way to chemically recycle waste PET into the additive for modifying crumb rubber modified asphalt (CRMA) binder and then mixed the binder with the 13 mm maximum aggregate stone matrix asphalt containing 100% coarse RCA for preparing the mixtures. After a series of physicochemical characterizations of the PET additive, the moisture resistance, rutting resistance, low-temperature cracking resistance, and fatigue resistance of the mixture were systematically evaluated. The results showed that the PET additive is capable of improving the resistance to moisture and high-temperature deformation of asphalt rubber and helps greatly reduce the moisture-induced damage to the interfacial bonding layer. To be more detailed, the residual Marshall stability (RMS) value of RCA-CRMAM/1PET after 72 h of immersion is higher than 85% by contrast to that of RCA-CRMAM (77.1%), while the tensile strength ratio (TSR) value of RCA-CRMAM/1PET shows more than 80% compared to that of 65.2%. In addition, only 1% PET additive can enhance the high-temperature resistance of asphalt rubber containing RCA to rut and allow it to maintain higher resistance to rut after moisture-induced damage. 1% PET additive can help improve the bearing capacity of RCA-CRMAM under a low-temperature environment and delay its fatigue life at small stresses. Generally, with the successful introduction of PET additives to asphalt rubber containing RCA, more durable and sustainable highway pavement can be produced and applied in practice to alleviate the negative impacts caused by waste PET, waste tire rubber, and waste concrete.

Utilization of glass powder and precious slag balls as a partial replacement of cement and fine aggregates

Cement manufacture on a large scale affects the environment negatively and depletes natural resources. Waste glass is disposed off in landfills after it becomes waste, which is unsustainable because glass does not disintegrate in the environment. Use of waste glass powder in concrete as a partialreplacement of cement can be a practical policy in reducing cement usage. Concrete’s most frequently used aggregates are crushed stone, rock, etc. and their excavation has a higher negative influence on the environment and causes an ecological imbalance. Thus, a suitable alternative material must be used in place of the natural stone aggregate. Precious Slag (PS) Ball is a novel environmentally friendly material that can be created by rapid cooling of slag which generated from steel making process by means of Slag Atomizing Technology (SAT). This study aims to examine the combined effect of two industrial wastes, namely glass powder (GP) and precious slag (PS) balls, as substitute materials for cement and fine aggregate on the performance of concrete. In this study, both cement and fine aggregates in concrete has been substituted for glass powder and PS Balls respectively to varying degrees (0%, 10%,15%, 20%,25%). Together with tests to analyze mechanical properties, durability tests were also conducted. The outcome demonstrates that glass powder and PS Balls can serve as an acceptable substitute for cement and fine aggregate respectively with 20% substitution dosage being the optimum for both glass powder and PS Balls.

Evaluation of the crushing characteristics of industrial waste aggregates as construction materials

Overexploitation of natural resources like sand and stone aggregates for construction purposes, and on the other hand, the generation of huge quantities of different industrial wastes in recent years pose a threat to the environment. One of the promising solutions to both of these problems could be bulk utilization of industrial waste aggregates in civil and construction industries. In order to check the utilization prospects of any industrial waste aggregate, its crushing characteristics is one of the important parameters that needs to be evaluated. This is due to the fact that the engineering behaviour and integrity of any granular media is highly dependent on the breakage potential or the crushing characteristics of the materials. In the present study, some of the industrial waste aggregates viz., Blast furnace slag (BFS), Quarry waste (Q-Waste), Marble waste (M−Waste), and Overburden sand (OB-Sand) are selected for evaluation of their crushing characteristics. Various parameters such as mineralogy, grain morphology, gradation, mean grain size, the initial state of compaction, and stress levels which play an important role in deciding the crushing strength of a granular material are considered in the present study. A series of one-dimensional compression tests are performed at different stress levels (i.e., 5, 10, 20, 30, 40 MPa) after compacting the industrial waste aggregates to different compaction states. Based upon the experimental results, BFS and OB-sand were found to be the most and least crushable materials, respectively. Mathematical equations are also proposed in this paper for the prediction of relative breakage. These are found to be very suitable for industrial waste aggregates. It is highly believed that the results obtained from the present study can be used as a pre-reference while selecting any of the mentioned materials for construction purposes.

Experimental Examination on Use of Recycled Materials in Stone Matrix Asphalt

SMA (stone matrix asphalt or stone mastic asphalt) was initially discovered in German & European and countries as impermeable or highly resilient wearing surface for bridge decks. Generally, it consists of two parts, a binder rich mortar and a coarse aggregate. It is made by a mixture of crushed fine and coarse aggregates, stabilizer such as polymers or fibres, cement & mineral filler. In present work, an effort has been made to study the properties of Stone Matrix Asphalt mixes with cellulose fibre and using recycled pavement material as well as slag in partial replacement of stone aggregates as coarse and fine aggregate grades. This research project was done to check the usage of recycled pavement material in Stone Matrix Asphalt mixture by conducting Marshall test in the lab in which flow & stability value was examined along with other properties of mixtures. Here IRC -SP-79 specification, aggregate gradation is taken for stone matrix asphalt. Binder used is 60/70 penetration grade bitumen. Binder content is varied as 4%, 5%, 5.5%, 6%, and 7% by weight of aggregates and fibre used is optimum fibre content at 0.3% by the weight of aggregate. Key Words: SMA (Stone Matrix Asphalt), RAP (Recycled Asphalt Pavement)

Evaluation of recycled concrete aggregate in reinforced concrete elements under simulated corrosion conditions utilising diverse non-destructive methods

ABSTRACT In this study, the performance of recycled concrete aggregate (RCA/RSA) available in Agartala, Tripura (north-eastern regions of India), was studied in reinforced concrete members subjected to a severe artificially induced corrosive environment. The performance test was based on the non-destructive and destructive parameters of concrete. Due to the scarcity of normal stone aggregate (NSA) in this region, studying the effect of using such type of aggregate in reinforced concrete members help not only to mitigate the demand but also assists in waste management. The study also presents an innovative application of micro-bend opticalfibre sensors for corrosion monitoring and validated using other non-destructive instruments. The study presents an effective application of the micro-bend optical fibre sensor to predict the initiation of corrosion (de-passivation) and initiation of cracking (critical stress) due to corrosion in reinforced concrete specimens. Later, the results were validated using half-cell potentiometer and electrical strain gauge values. The specimen also presented different mechanical and durability properties with varying RCA percentages. A regression model to predict mechanical properties and corrosion amount (hoop strain) in reinforcement for different RCA-replaced concrete has been presented. The sorptivity and other porosity-related results were also presented for different RCA replacement percentage specimens.

Research on two-dimensional digital characterization of crushed stone aggregates in the SCC filling layer of the CRTS III slab ballastless track

Through the actual situation of on-site construction and building, it could be found that the filling quality of the SCC filling layer had a large correlation with the apparent morphology of crushed stone aggregates. This paper investigated the two-dimensional digital characterization of crushed stone aggregates in the SCC filling layer of the CRTS III slab ballastless track through field experiments and compared them with pebble aggregates from three perspectives. Two-dimensional feature data of crushed stone and pebble aggregates in the top view, front view, and left view were obtained using the 3D scanning equipment. The sphericity (or flatness, or circularity) of both crushed stone and pebble aggregates did not directly reflect a uniform pattern of variation in the three views. Pebble aggregates exhibited higher concentration of the sphericity (or flatness, or circularity), while crushed stone aggregates showed more dispersed values. Furthermore, the fractal dimension of crushed stone aggregates was greater than that of pebble aggregates in the corresponding view, with the fractal dimension of crushed stone aggregates tending towards larger values. Regarding the characteristic indices of crushed stone and pebble aggregates, including the sphericity, flatness, and circularity, significant differences were observed between the different characteristic indices. This research provided effective suggestions for the preparation of the SCC with excellent flow characteristics at the construction site.

MATLAB image analysis approach for adhesion and moisture susceptibility assessment of modified asphalt concrete

This research aimed to examine the adhesion and moisture susceptibility of asphalt concrete, which are crucial for its durability. Three types of asphalt (40–50, 60–70 and 80–100 penetration grade asphalt) were modified with low-density polyethylene (LDPE), hydrated lime (HL) and paraffin wax (PW). These modified asphalts were mixed with lime stone aggregate at optimum dosage. The Rolling Bottle Tests (RBT) were performed to quantify the moisture susceptibility of the asphalt concrete while pneumatic adhesion tensile testing instrument (PATTI) was used to perform the bitumen bond strength (BBS) tests. The images of virgin and modified asphalt concrete samples were taken before and after performing RBT and BBS tests using high resolution cameras. The analysis of images was carried out using MATLAB software. The RBT and BBS tests standards recommend using visual assessment of asphalt area coverage on aggregate surface. Image analysis using MATLAB gives more precise and accurate asphalt coverage area on aggregate. The LDPE modified concrete showed more asphalt area on aggregate surface than others. The results showed that the 40–50 pen asphalt modified with LDPE and HL had higher bond strength (66%) and less moisture susceptibility (19%) compared to the softer grade (60–70 and 80–100 pen) asphalt. The PW-modified asphalt concrete showed less (4%) bond strength and more moisture susceptibility (5%) compared to the virgin asphalt concrete. Asphalt coverage area from visual and MATLAB image analysis were found in variation of frequency distribution from −4% to 16%. Based on the findings of the research it is proposed to use MATLAB image analysis in place of visual inspection for the determination of asphalt coverage on aggregate surface.