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Showing 1 to 20 of 31 for “"Cementitious composites"”.
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Mechanics of fiber reinforced cementitious composites
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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Ductility enhancement of high performance cementitious composites and structures
High performance cementitious composites (HP2C) are a new generation of fiber reinforced cementitious composites (FRCC) with substantial improvements in mechanical behavior. The most important development in these HP2C materials may be the nearly elasto-plastic ductile behavior, which allows safe …
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Performance of phase change cementitious composites with self-heating capacity
… on the performance of shape-stabilised PCM composites (SSPCM). The first research emphasises the structural variation of supporting materials, ceramsite as coarse aggregate, and its impact on PCM loading, leakage prevention, and strength. Ceramsite with interconnected small pores are …
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Multi-functional applications of graphene related materials in cementitious composites
Cementitious composites are the most widely used construction materials with 4.1 billion tonnes of cement being produced globally in 2017. However, cement production is associated with ~7% of the total global anthropogenic CO2 emissions. Moreover, concrete structures suffer from poor durability, …
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Self-healing strain-hardening cementitious composites (SH2CC) for cyclic loading environments
… with fibre-reinforced strain-hardening cementitious composites (SHCC); the former enables cementitious materials to heal cracks without human intervention, and the latter features much higher ductility than traditional concrete due to effective fibre bridging based on micromechanical …
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An Approach Towards Sustainable Synthesis of MXene and High-Performance Cementitious Composites
… methods for synthesizing MXenes and enhancing cementitious materials to meet the critical need for sustainable manufacturing and improved mechanical properties in structural materials. Central to this research is the advancement in material science across two key areas: the development of …
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Graphite-enabled Cementitious Composites: A Smart and Resilient Solution for Future Infrastructure
… testing and numerical modelling, self-sensing cementitious composites for resilient smart infrastructure by embedding graphite into cementitious materials. Material characterisation experiments were firstly systematically conducted to determine the optimal material proportion and investigate …
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SYNERGISTIC EFFECT OF SHRINKAGE MITIGATING STRATEGIES ON PERFORMANCE OF FIBER-REINFORCED CEMENTITIOUS COMPOSITES
… to promote the properties of high-performance cementitious composites (HPC) designated for infrastructural construction, repair, and 3D printing applications. HPC mixtures were prepared with steel and synthetic macro and microfibers, expansive agent (EA), and shrinkage reducing admixture (SRA) …
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Understanding and predicting transient material behaviors associated with mechanical resonance in cementitious composites
Cementitious composite materials provide a foundation for civilized life, from underlying structural bedrock to the tallest concrete structures in the world. These infrastructure materials (e.g., concrete and rock) are challenging to inspect and characterize, in part because of their heterogeneous …
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Behaviour and Analysis of Strain Hardening Fiber Reinforced Cementitious Composites Under Shear and Flexure
… of concrete members. By introduction of novel cementitious material, a much greater need to develop a standard to treat the concrete in a systematic manner is felt. In this thesis, an alternative framework of analysis to interpret the shear failure and the corresponding strength of the failure …
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Characterization of Quarry By-Products as a Partial Replacement of Cement in Cementitious Composites
… properties (e.g., mineralogy and reactivity in a cementitious system). The quarry by-products were classified as four granites, two limestones, and one greenstone. These quarry by-products were found to be non-pozzolanic and non-hydraulic. However, there are indications that there may be reactions …
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Structural behavior and modeling of high-performance fiber-reinforced cementitious composites for earthquake-resistant design
… modeling of High Performance Fiber-Reinforced Cementitious Composites (HPFRCC) for use in key shear and/or moment regions of damage-critical structural concrete elements has been investigated. An experimental program was conducted to further understand the behavior of HPFRCC under general …
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Design and Performance of Intrinsic Self-sensing Cementitious Composites for Smart Structural Health Monitoring of Civil Infrastructure
Intrinsic self-sensing cementitious composites which simultaneously own the load bearing capacity and self-sensing capacity, have attracted increasing research interests in recent years to fulfil the multifunctional requirements for the next generation of biomimetic, intelligent and resilient …
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Functionally Graded Fiber-Reinforced Cementitious Composites---Manufacturing and Extraction of Cohesive Fracture Properties Using Finite Elements and Digital Image Correlation
… four-layer functionally graded fiber-reinforced cementitious composite (FGFRCC) as a beam component has been fabricated using extrusion and pressing techniques. The FGFRCC features a linear gradation of fiber volume fraction through the beam depth. The bending test shows the enhanced bending …
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Experimental and theoretical investigation of self-sensing CNTs-based cementitious composites [Indagine sperimentale e teorica sui compositi cementizi self-sensing a base di CNTs]
L’incorporazione dei nanotubi di carbonio (CNT) nelle matrici cementizie rappresenta una strategia promettente per lo sviluppo di materiali da costruzione multifunzionali dotati di capacità auto-rilevanti, in grado di consentire un monitoraggio autonomo dello stato di salute strutturale. Tuttavia, …
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Fresh Mix Properties and Flexural Analysis with Digital Image Correlation of Additively Manufactured Cementitious Materials
… civil infrastructure applications, particularly cementitious materials. To ensure the safety, health, and welfare of the public, quality assurance and quality control (QA/QC) methods via standardized testing procedures are of the upmost importance. However, QA/QC methods for these applications …
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Modelling of ECC and SMA-Reinforced Concrete Members
… as Shape Memory Alloys (SMAs) and Engineered Cementitious Composites (ECC). This work looks to model the response of ECC at both small-and large-scale sizes based on experimental data of ECC flexural prisms and shear walls reinforced with ECC. Modelling was conducted using VecTor2, a FEA …
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Model-based design of an ultra high performance concrete support structure for a wind turbine
… a new constitutive model for fiber reinforced cementitious composite materials, which is particularly suitable for high performance cementitious composites including UHPC. On the basis of UHPC material model and the load requirements for wind turbines, the objective of this work is to carry out …
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Evaluation of mechanical properties of textile concrete subjected to different environmental exposures
… referred to as High Performance Fibre Reinforced Cementitious Composites (HPFRCC) has been developed. As a subset in this new field, additions of polypropylene (PP) fibres, in the form of woven textile fabrics, have proved most successful as reinforcement to cementitious matrices, leading to the …
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