Showing papers in "Construction and Building Materials in 2016"

TL;DR: In this article, the authors present a comprehensive source of reported literature involving dynamic mechanical properties of natural fiber reinforced polymer composites, hybrid and nano composites and its applications and provide a perfect data to explore its industrial application primarily as cheaper construction and building materials for doing further research in this topic.

TL;DR: In this paper, the effects of three shaped steel fibers (straight, corrugated, and hooked-end) with different fiber contents by volume on mechanical properties of ultra high performance concrete (UHPC) were investigated.

TL;DR: In this paper, a review of ground granulated blast furnace slag (GGBFS) utilization and efficiency on the properties of mortar/concrete is presented, including workability, setting time, bleeding, rheological properties, slump loss, segregation resistance and early age cracking potential and finishability.

TL;DR: In this article, a review summarises the state of the art regarding the understanding and consequences of carbonation of cement paste and summarises recent efforts regarding active use of carbonations as a tool for manipulating certain properties of cement based materials.

TL;DR: In this article, the authors present the process of crack healing phenomenon in concrete by microbial activity of bacteria, Bacillus subtilis, which is introduced in concrete via direct incorporation, and thorough various carrier compounds namely light weight aggregate and graphite nano platelets.

TL;DR: In this paper, the authors investigated the use of coal ash in concrete to replace sand with bottom ash waste and cement with fly ash and concluded that those experimental concrete mixes can be used in several structures (foundations, subbases, pavements, etc.) which will minimize the cost, energy and environmental problems to a great extent.

TL;DR: In this article, the authors summarized the existing knowledge regarding the carbonation of cement-based materials and identified the areas which require further investigations, including the potential of CO 2 storage in concrete and the newly developed carbonate binders.

TL;DR: In this article, the use of waste glass powder obtained from grinding of crushed containers and building demolition to produce glass powder blended cement as concrete additives was evaluated in terms of physical and mechanical properties.

TL;DR: In this paper, the authors evaluated the relative merits of two types of basalt fiber (bundle dispersion fibres and minibars) in enhancing the mechanical behaviour of concrete.

TL;DR: In this paper, the contribution of expanded polystyrene (EPS) particles on fire resistance, thermal conductivity and compressive strength of foamed concrete has been investigated for densities ranging from 1200 to 150 kg/m3 with an EPS volume range of 0 −82.22% and water-cement ratio of 0.33.

TL;DR: In this article, a review of the state of the art of research on the influence of these various natural and renewable resources in unfired earth materials such as compressed earth blocks, plasters, and extruded and stabilized blocks is presented.

TL;DR: NDT methods applicable to concrete bridges are reviewed in this paper, where a flow chart based on damage level along with NDT methods and potential remedial measures are proposed for periodic health monitoring of structures.

TL;DR: In this paper, the use of pervious concrete as a pavement material in low-volume road applications has gained importance due to its positive environmental aspects, which will make it a promising sustainable roadway material in future.

TL;DR: In this article, the effect of the healing agent when incorporated into the mortar matrix and the evaluation of the recovery of liquid tightness after cracking and exposure to two different healing regimes (water immersion and wet-dry cycles) through water permeability tests was investigated.

TL;DR: In this article, the authors present a concise review of various studies that have indicated the utilization of various industrial waste products in the synthesis of geopolymers, which can be used effectively as source material for geopolymerization.

TL;DR: In this paper, the effect of coir fibres for use as reinforcement materials for polymer and cementitious composites was investigated, and the results showed that the treatment improved the tensile and flexural properties of composites.

TL;DR: In this article, a holistic review of current research on the mechanical properties of alkali-activated concretes including research on its compressive strength, tensile strength, elastic modulus, Poisson's ratio, stress-strain relationship under uniaxial compression, fracture properties, bond mechanism with steel reinforcement, dynamic mechanical properties, and high-temperature performance.

TL;DR: In this paper, the authors evaluated IOT as a replacement for river sand in concrete and compared with the result of conventional concrete using a statistical fitted linear regression analysis on compressive strength to evaluate the significant level of concretes containing IOT.

TL;DR: In this paper, the dispersion of graphene oxide (GO) in simulated pore solution and cement paste was investigated, and it was found that severe GO aggregation occurred in presence of divalent calcium ions.

TL;DR: In this paper, the effect of colloidal nanosilica on the properties of High Performance Concrete with copper slag as fine aggregate at a constant replacement level of 40% was investigated.

TL;DR: In this paper, the compressive strength of the examined mixes was found to be in the range of 40-50 MPa for 40% and 50% ground granulated blast furnace slag replacement mixtures respectively.

TL;DR: In this paper, a new method of analysis based on the characteristic relaxation angular frequency, w, of each phenomenon and the association of typical capacitances and frequencies was proposed for the analysis of EIS results from samples of concrete.

TL;DR: In this paper, the compressive strength of High Performance Concrete containing nano silica and copper slag as partial cement and fine aggregate replacement respectively was determined using MRA and ANN models.

TL;DR: In this paper, a one-part geopolymer was synthesized from alkali-thermal activated Bayer red mud (RM) with addition of silica to optimize its composition, but the longterm strength of the binder with only RM was poor because of the unstable polymerization due to the low SiO 2 /Al 2 O 3 molar ratio.

TL;DR: In this article, the authors analyzed the self-healing properties of early-age concretes, engineered using a crystalline admixture (4% by the weight of cement), by measuring the permeability of cracked specimens and their crack width.

TL;DR: In this paper, a fracture energy and flexibility index (FI) was proposed to screen asphalt concrete mixtures' cracking resistance using the semi-circular bending test geometry, and the results indicated positive correlation between SCB test results and other independent fatigue tests.

TL;DR: In this article, a review of key parameters that influence measurement and modeling of skid resistance of asphalt pavements is provided, and the current harmonization method of friction measurements questioned.

TL;DR: In this article, the effects of coal fly ash additions, foaming time, heating rate and sintering temperature on the bulk density, porosity, mechanical properties and thermal conductivity of glass ceramic foams were systematically investigated.

TL;DR: In this article, the nano-scale characterization is carried out with a focus on the microstructure of the cement paste around the graphene nano-particles, and atomistic models of the graphene-reinforced C-S-H gels are constructed and the freeze-and-thaw process is simulated.

TL;DR: In this article, three methods to improve and then assess the mechanical performance of CRC have been examined namely, rubber pre-treatment using sodium hydroxide (NaOH) solution, using silica fume additives, and increasing concrete cement content.