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ABSTRACT The use of fibre reinforced polymer (FRP) in civil construction applications with near-surface mounted (NSM) method has gained considerable popularity worldwide and can produce confident strengthening and repairing systems [...]

ABSTRACT 3D printing techniques are being researched extensively in the construction sector. However, the key issue lies in the development of cementitious materials with both favorable printability and enough mechanical [...]

ABSTRACTThermal shock resistivity is one of the most important characteristics of the concrete. There are numerous research papers, which investigate the reduction of fundamental engineering properties after Ordinary Portland cement [...]

ABSTRACT The extrusion-based 3D concrete printing is a new technology under development for construction of buildings and structures of complex geometries without the use of expensive formwork. The weak inter-layer [...]

ABSTRACT Graphene oxide (GO) is a novel class of two-dimensional nanoscale sheet material due to its excellent dispersibility in water, high aspect ratio and good intrinsic strengths. In order to [...]

ABSTRACT Cement mixture with the properties of early strength and low hydrating thermal dissipation is necessary to cementing the shallow natural gas hydrate formation in deep water area. The research [...]

ABSTRACT In this paper, alkali-activated fly ash (geopolymer) samples were microstructurally analysed after thermal shock. The prepared samples were heated at 1000[degrees]C, and then quenched in water to room temperature. [...]

ABSTRACT In this paper, the influence of boron ions on the strength development and microstructure variations of fly ash-based geopolymers and alkali-activated slag (AAS) was investigated through utilizing borax-based alkali-activators. [...]

ABSTRACT In this study, the effects of graphene oxide (GO) agglomerates on the workability, hydration, microstructure, and compressive strength of cement paste were addressed. The workability of cement paste was [...]

ABSTRACT Additive manufacturing is a common technique used to produce 3D printed structures. These techniques have been used as precise application geometry in different fields such as architecture and medicine, [...]

ABSTRACT This study presents an investigation of the effect of hydrocarbon fire exposure on the residual compressive strength properties of geopolymer concrete panels and cylinders. Gladstone flyash was utilized as [...]

ABSTRACT This paper investigates binary and ternary binders of ordinary Portland cement, metakaolin and limestone as a possible solution to reduce the amount of cement content in mortar mixes. Furthermore, [...]

ABSTRACT Geopolymer composite research is aimed to make sustainable alternatives to Portland cement-based composites. However, the two main obstacles for commercialization are the use of large quantities of user-hostile liquid [...]

ABSTRACT In this study, the carbonation resistance of two geopolymer concretes exposed to outdoor field conditions for eight years was investigated. Core specimens were used to determine the in-situ carbonation [...]

ABSTRACT As a 2D nanomaterial, graphene oxide (GO) has attracted considerable attentions for reinforcing cementitious materials. However, special attention must be paid to the dispersion of GO in the matrix, [...]

ABSTRACT The research objectives were designed to investigate polyacrylamide superabsorbent polymers as internal curing agent to mitigate autogenous shrinkage of well cement. Results show that poly acrylamide superabsorbent polymer hydrolyzes [...]

ABSTRACT Fly ash sourced from Sarawak, Borneo was alkali-activated by a combination of alkali hydroxides (i.e. NaOH, KOH or Ca[(OH).sub.2]) and sodium silicate (i.e. industrial or commercial grade [Na.sub.2]Si[O.sub.3]O) in [...]

ABSTRACT The research objectives in this paper are designed to use gypsum microsphere to achieve low elastic modulus and expansive well cement system. Results show that gypsum microsphere has the [...]

ABSTRACT The research objectives are designed to realize the application of superabsorbent polymer (SAP) in well cement to plug microcrack. Gypsum-chitosan-gypsum coated SAP is proposed. Percolation theory is used to [...]

ABSTRACT A major challenge in the specification of geopolymer mix designs is the variability in the fly ash used and the impact of that variability on the performance of the [...]

ABSTRACT In this study, it is going to investigate properties of lightweight geopolymer specimens aerated by aluminium powder. It has been established well that aluminium powder can be appropriately used [...]

ABSTRACT In the present work, flexural strength of plain and fibre-reinforced boroaluminosilicate geopolymers is studied. Traditional aluminosilicate geopolymers are produced by alkali activation of an aluminosilicate source. Alkali activator is [...]

ABSTRACT The research objectives were to investigate the influence of chitosan on strength and thickening properties of oil well cement under the downhole temperature condition. The results showed that the [...]

ABSTRACT In the present paper, compressive strength of functionally graded geopolymeric (FGG) specimens was studied. FGG samples were prepared by casting two different geopolymeric mixes. Several FGG structures were made [...]

ABSTRACT Progress in the field of nanomaterials presents an invaluable opportunity to develop cementitious composites at the nanoscale. Engineered nanomaterials exist in three principal shapes, namely 0D nanoparticle, ID nanofiber [...]

ABSTRACT Compressive strength of six types of geopolymer pastes made from different fly ash sources were studied. Alkali activation was performed by a mixture of sodium silicate and sodium hydroxide [...]

ABSTRACT Alkali-activated slag can totally disintegrate when exposed to 50 °C. This paper presents a study of possible solutions to avoid this disintegration by using silica fume (SF) and fly [...]

ABSTRACT This study evaluates the behavior of a recently developed ductile fiber reinforced geopolymer composite (DFRGC) exhibiting deflection hardening and multiple cracking behavior in flexure employing four different activator combinations [...]

ABSTRACT In the current paper, fracture strength of a functionally graded geopolymer was analytically modelled for crack propagation in two possible perpendicular situations with respect to the functionally graded region. [...]

ABSTRACT This paper presents a study on the effect of aggregate size on spalling of concrete in fire. Three concretes with completely different chemical compositions and strengths were investigated, namely, [...]

ABSTRACT in this paper, a construction application of a technique to improve the fire resistance of high strength concrete is presented. Before the construction application, fire tests of three hours [...]

The authors regret that the SEM image of GO (Fig. 1) should be replaced by a more representative one, which is provided by the material supplier, as given below. The [...]