The building industry is a large contributor to greenhouse gas (GHG) emissions and vast consumer of natural resources. It estimated that, in the next 40 years, around 415 Gt CO2 will be released as result global construction activities. Therefore, improvements technologies are essential reduce GHG thereby attain national international goals mitigate climate change. Cross-laminated timber (CLT) has emerged an innovative alternative material steel/concrete construction, given its relatively...

The use of seawater and recycled coarse aggregate (RCA) in concrete mixtures leads to the production a very sustainable concrete. potential risk steel reinforcement corrosion (due chloride seawater) such may be eliminated when considering plain or noncorrosive (e.g., fiber-reinforced polymer). This study investigated fresh hardened properties proposed green mixed using aggregates. Two different were studied, namely conventional (Mix 1) seawater-mixed with RCA 2). Blast furnace slag was used...

The combined use of recycled concrete aggregate (RCA) and glass fiber reinforced polymer (GFRP) reinforcement in (RC) structures is deemed plausible to achieve sustainable construction. This paper aims examine the effect such a combination (RCA + GFRP reinforcement) on shear behavior RC beams. Six medium-scale beams (150 × 260 2200 mm) critical were tested under three-point loading until failure. test variables type (natural/recycled) (steel/GFRP/none). failure modes, cracking patterns,...

Studies with large physical models are a vital link between the theoretical work and field applications provided that these designed to represent real structures where various types levels of uncertainties can be incorporated. While comprehensive analytical laboratory joint studies ongoing at Qatar University, University Central Florida Alberta, this paper presents initial findings dynamic testing University. A stadium structure (grandstand simulator) has been constructed Capable housing...

Abstract Fabric reinforced cementitious matrix (FRCM) is a composite consisted of high‐strength fibers impregnated in cement‐based mortar, and commonly used for strengthening concrete masonry structures. Comprehending the tensile behavior FRCM important to achieve reliable accurate design systems. The current paper reports on results an experimental study characterization FRCM. A total 40 specimens (410 × 50 mm, varied thickness) were prepared tested. tests conducted according AC 434...

This paper investigates the bond between high-strength concrete (HSC) and tensile lap-spliced basalt fiber-reinforced polymer (BFRP) bars. Ten large-scale BFRP-reinforced beams (300 × 450 3900 mm) were fabricated tested under four-point loading until failure. The parameters investigated included BFRP bar diameter (10, 12, 16 mm), splice length (400–1200 mm range), surface texture (sand-coated (SC) helically wrapped (HW)). Test results demonstrated that flexural capacity of reinforced with...

Predictions show that more than half of the world population will lack sufficient freshwater by 2025. Yet, construction industry uses a considerable amount to produce concrete. To save resources fresh water, using seawater seems be valid potential alternative can replace for mixing This paper presents short review performed on existing literature related usage in concrete structures. As summary work presented: (a) It is noticeable current literature, generally, reports little or no negative...

Abstract This paper aims at developing a convolutional neural network (CNN)-based tool that can automatically detect the left-turning vehicles (right-hand traffic rule) signalized intersections and extract their trajectories from recorded video. The proposed uses region-based CNN trained over limited number of video frames to moving vehicles. Kalman filters are then used track detected trajectories. achieved an acceptable accuracy level when verified against manually extracted trajectories,...

Internationally, an annual number of more than a million fatalities are caused by road traffic crashes, with particularly signalized intersections being crash prone locations within the highway system. An accumulation conflicts between drivers is different movements (through and turning) from directions at intersection; hence, studying trajectories turning vehicles important step towards improving safety performance these facilities. In view that, current paper aims providing further insight...

The combined use of seawater and recycled tire aggregate (RTA) in concrete is potentially a way forward towards sustainable construction. It can help control harvesting natural aggregates, manage waste tires, mitigate freshwater consumption desalination impacts. current paper aims at investigating the material performance cost effectiveness mixed with RTA. consists two parts. first part studies characteristics (fresh hardened) Thirteen mixtures, varying mixing water (seawater/freshwater) as...

Textile reinforced mortar (TRM) is applied on the concrete surface with aim of strengthening structures. The performance strengthened structural system directly related to bond between existing substrate and freshly TRM layer. This paper presents results an experimental study carried out investigate significance preparation, performed prior strengthening, bonding behavior system. For this purpose, slabs size (500 mm × 500 100 mm) were prepared using a 10-mm thick After that, layer slab was...

This paper presents the results of an experimental study carried out to examine efficacy Fabric-Reinforced Cementitious Matrix (FRCM) in strengthening RC beams susceptible shear failure. In this paper, seven shear-critical beams, 2,500 mm length, 150 width, and 330 depth, were tested under three-point loading until Two main test variables considered, which are: a) Strengthening material: carbon, polyparaphenylene benzobisoxazole (PBO), or glass FRCM, b) application pattern: a single...

Textile reinforced mortar (TRM) is a composite material consisting of dry fibers embedded in cementitious matrix, commonly used for strengthening masonry and concrete structures. In general, tensile characterization required to identify the TRM mechanical properties, which are considered key parameters needed structural design systems. This paper presents results an experimental study conducted investigate properties TRM. this effort, total 15 coupons 410 mm length, 50 width, 10 thickness...

This paper investigates the effectiveness of fabric reinforced cementitious matrix (FRCM) systems in shear-strengthening concrete beams. Three types FRCM were considered, namely, polyparaphenylene benzobisoxazole (PBO)-FRCM, Carbon-FRCM, and Glass-FRCM. At first, tensile characterization test was performed on 15 coupons with aim identifying properties adopted. After that, seven shear-critical RC beams tested under three-point loading, consideration two parameters: (a) material...

Recently, seawater has emerged as viable mixing water for concrete, especially in the case of non-reinforced concrete applications or with use non-corrosive reinforcement. Previous studies concerning seawater-mixed mostly revealed an initial slight increase its strength performance (i.e., till Day 14 following mixing), followed by a reduction 7–15% after 28 days longer) compared to conventional freshwater-mixed concrete. With attempt explain such observations, this paper aims at comparing...

Fabric-reinforced cementitous matrix (FRCM) composites are usually applied on the concrete surface for purpose of strengthening reinforced structures. However, efficiency FRCM is notably affected by bond between system and substrate. In view that, current paper presents results a preliminary experimental study carried out to investigate characteristics concrete. Six number specimens, each consisted 150-mm cube with double-shear connection an system, were subjected direct-shear loading test....

Given the increasing global concern of freshwater scarcity, use seawater in concrete mixtures appears to be a way forward towards achieving sustainable concrete, especially case non-reinforced applications or with non-corrosive reinforcement. This paper reports on results an experimental study compare freshwater-and seawater-mixed concretes terms their strength, shrinkage and permeability performance. The program included following: (i) compressive strength test (at 3, 7, 28, 56-day ages);...