With the accelerating growth of infrastructure construction, carbon emission and environmental pollution problems have become increasingly severe. In order to promote sustainable development construction industry, using rice husk ash (RHA) in recycled aggregate concrete has aroused extensive interest. This study aims investigate impact partial replacement (0%, 10%, 20%, 30% binder) ordinary Por...

This research studies the properties of mortars incorporating waste materials including red mud (RM), ground granulated blast furnace slag (GGBFS), and electric arc dust (EAFD). Ordinary Portland cement (OPC) was partially replaced with equal contents RM, GGBFS, EAFD at different ratios by weight (0, 5, 10, 15, 20, 30, 40, 50%). Slump, compressive strength, splitting tensile electrical resistiv...

Construction and demolition (C&D) waste has become a research hotspot due to the need for environmental sustainability strength enhancement of cementitious materials. However, wider applications C&D are limited, as its non-homogeneous surface nature limits workability. This evaluated feasible utilization aggregates in polypropylene-fiber-reinforced cement-stabilized soil (CSS) under sul...

Strain hardening cementitious composite (SHCC) is a special class of ultra-ductile material which has autogenous self-healing capability due to its intrinsic tight crack widths. To further improve healing ability, agent (HA) can be incorporated in SHCC, enabling it also the autonomous mechanism. In this study, effects adding bacteria-embedded polylactic acid (PLA) capsules on mechanical propert...

Abstract The paper presents research into the changes of properties in cement-bonded particleboards caused by moisture saturation over course 504 h. Three particleboard variants were tested, all at age 18 months. first is a standard production-line board manufactured CIDEM Hranice, a.s. (identified as CP-R). other two modified by-products manufacturing process—dust (CP-D) and particulate mixtur...

The present paper offers a meso-scale numerical model to investigate the effects of random distribution of aggregate particles and steel fibers on the elastic modulus of Steel Fiber Reinforced Concrete (SFRC). Meso-scale model distinctively models coarse aggregate, cementitious mortar, and Interfacial Transition Zone (ITZ) between aggregate, mortar, and steel fibers with their respective materi...

This paper presents an experimental study on use of hot-melt polyamide (HMP) to prepare mortar specimens with improved crack healing and engineering properties. The role of HMP in the crack repairing of cement mortar subjected to several rounds of heat treatment was investigated. Compatibility between HMP and hydraulic cement was investigated through X-ray diffraction (XRD) and Fourier transfor...

Paracoccidioidomycosis (PCM) is a fungal disease, chronic and endemic, especially in Latin America.1 Aiming to acquire more information about the effectiveness of the treatment employed, this study aimed to describe the profiles of patients with paracoccidioidomycosis and compare treatments used in patients with PCM cared for at the Clinic of Tropical Medicine of the “Conjunto Hospitalar de Sor...

Within odonates, male mating patterns range from active mate search to long-term territorial defence of oviposition sites. In territorial species, males may use three mating tactics or strategies that may be determined environmentally or genetically: territoriality, non-territoriality, or reversible switches between the two. The tactic exhibited by a male in any given case is determined by the ...