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Comparison of technical properties of cement pastes with different activated recycled powder from construction and demolition waste

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 120 ()

Hybrid Recycled Powder (HRP), which was collected from construction and demolition waste (C&DW), normally possessed potential activity due to it c......

Effect of superabsorbent polymers and expansive additives on the shrinkage of alkali-activated slag

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

In this study, superabsorbent polymers (SAPs) and two expansive additives (a MgO-based expansion agent and gypsum) were studied to possibly mitigate t......

Influences of different admixtures on the properties of oil well cement systems at HPHT conditions

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

Four series of cement slurries were cured for a period of 14 days under high temperature and high pressure condition (200 degrees C, 20 MPa) to invest......

Evaluation of concrete creep properties based on indentation test and multiscale homogenization method

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

This paper aims to quantitatively evaluate the creep properties of concrete through microscopic tests with a multiscale mechanical homogenization meth......

Self-monitoring of flexural fatigue damage in large-scale steel-reinforced cementitious composite beams

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

Self-sensing in cementitious materials is a topic of great interest to many. However, to date, the subject has been mainly investigated by using small......

Effects of polycarboxylate superplasticizer on rheological properties and early hydration of natural hydraulic lime

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 122 ()

As one of the main materials for grouting repair, the workability of natural hydraulic lime (NHL) has been concerned widely. In this paper, effects of......

Prediction of fiber orientation and flexural performance of UHPC based on suspending mortar rheology and casting method

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 122 ()

Fiber orientation is an important parameter to model flexural performance of ultra-high-performance concrete (UHPC). This study proposes a novel appro......

Real-time localization of micro-damage in concrete beams using DIC technology and wavelet packet analysis

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

As the service time of large civil engineering structures increases, structural health monitoring providing early warning information becomes increasi......

Mechanisms underlying the strength enhancement of UHPC modified with nano-SiO2 and nano-CaCO3

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 119 ()

The unique physical and chemical properties of nano-particles can enhance the nature of cement-based materials at the micro-scale and nano-scale level......

Evolutionary trace for ductile fracture performance of rubber-cement composites

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 121 ()

In order to improve the plasticity of composites, rubber is usually incorporated in cement composites, but the rubber greatly increases complexity in ......

Ambient temperature cured 'just-add-water' geopolymer for 3D concrete printing applications

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 121 ()

This paper aims to enhance the printability performance (namely open time and buildability) and mechanical properties (namely compressive strength) of......

Numerical simulation on slump test of fresh concrete based on lattice Boltzmann method

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 122 ()

In this paper, the rheological mechanism of fresh concrete material was investigated and the method of evaluating its rheological property was optimiz......

Ex-situ micro X-ray computed tomography tests and image-based simulation of UHPFRC beams under bending

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

Micro-structures of fibre reinforced composites play a pivotal role in their damage, fracture and failure mechanisms. This study first carried out ex-......

Investigation of matrix cracking properties of engineered cementitious composites (ECCs) incorporating river sands

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 123 ()

Typical ECC mix design omits normal aggregates and adopts only fine micro silica sands. Few studies report the possibility of using river sands in ECC......

Electrical resistivity of partially-saturated alkali-activated slag containing sodium nitrite admixture

期刊: CEMENT & CONCRETE COMPOSITES, 2021; 120 ()

Electrical resistivity is a key durability indicator for evaluating the mass transport properties of cementitious materials particularly in partially-......

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