Feasibility of Developing Engineered Cementitious Composite with High Volumes of Fly Ash Using Cost-Effective PVA Fiber

2018 ◽  
Vol 48 (2) ◽  
pp. 20170596
Author(s):  
Jing Ji ◽  
Shilong Zhang ◽  
Liangqin Jiang ◽  
Lijian Zhou ◽  
Zhichao Xu ◽  
...  
Keyword(s):  
Fly Ash ◽  
Cost Effective ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Pva Fiber

Mechanical performance of engineered cementitious composites incorporating recycled glass powder

2020 ◽  
Vol 47 (12) ◽  
pp. 1311-1319 ◽  
Author(s):  
Adeyemi Adesina ◽  
Sreekanta Das
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Glass Powder ◽  
Mechanical Performance ◽  
Partial Replacement ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Recycled Glass ◽  
Alternative Materials ◽  
Coal Power Plants

Engineered cementitious composite (ECC) is conventionally made up of high content fly ash (FA) combined with Portland cement (PC) as a binder. However, the growing call for sustainability is leading to continuous decommissioning of various coal power plants around the world thereby limiting the supply of fly ash available for ECC production. Therefore, it is of high importance to find alternative materials that can be incorporated into ECC as a partial replacement of the conventional binders. This experimental investigation was carried out to investigate the feasibility of incorporating glass powder (GP) as binder into ECC mixtures. The mechanical performance in terms of its compressive, tensile, and flexural properties was evaluated. Results from this study showed that 25% FA can be replaced with GP without any significant reduction in the mechanical performance of ECC mixtures. Microstructural investigations of the mixtures incorporating GP show good bonding between the cementitious matrix and the fibres.

scholarly journals Fresh/Mechanical/Durability Properties and Structural Performance of Enginnered Cementitious Composite (ECC)

2021 ◽  
Author(s):  
Maulin Bipinchandra Mavani
Keyword(s):  
Fly Ash ◽  
Experimental Studies ◽  
Cost Effective ◽  
Cementitious Materials ◽  
Supplementary Cementitious Materials ◽  
Small Scale ◽  
Cementitious Composite ◽  
Durability Properties ◽  
Bridge Structures ◽  
Stud Shear Connector

Engineered Cementitious Composite (ECC) is an ultra ductile concrete with strain-hardening and multiple-cracking behaviour in tension and flexure. Fresh, mechanical and durability properties of different ECC mixtures are evaluated by incorporating supplementary cementitious materials (class F, CI fly ash and slag) and different aggregate type. Experimental studies demonstrated viability of producing greener, sustainable and cost-effective ECC using locally available aggregates (crushed sand) instead of microsilica sand and fly ash (Class CI or F) of up to 70% cement replacement having similar or better fresh, mechanical and durability properties. Structural validation by small scale tests on bridge decks with ECC link slab and by push out tests to evaluate stud shear connector-ECC interaction compared with self-consolidating concrete (SCC) proved feasibility and advantages of these ECC mixes. Based on research, recommendations are made for ECC mix design and their application in link slab construction in bridge structures.

scholarly journals Cost-Effective ECC with Low Fiber Content for Pavement Application

2019 ◽  
Vol 271 ◽  
pp. 07001
Author(s):  
Gabriel Arce ◽  
Hassan Noorvand ◽  
Marwa Hassan ◽  
Tyson Rupnow ◽  
Ricardo Hungria
Keyword(s):  
Compressive Strength ◽  
Volume Fraction ◽  
Tensile Ductility ◽  
Cost Effective ◽  
Fiber Content ◽  
Cementitious Composite ◽  
Flexural Fatigue ◽  
Engineered Cementitious Composite ◽  
Experimental Findings ◽  
The Cost

The objective of this study was to evaluate the feasibility of a cost-effective Engineered Cementitious Composite (ECC) with low fiber content (1.5% volume fraction) for pavement application. The ECC material studied was evaluated in compression, uniaxial tension and bending. In addition, flexural fatigue performance was evaluated. The cost-effective ECC material evaluated in this study exhibited a compressive strength of 37.6 MPa, a tensile ductility of 2.61%, and a flexural strength of 9.58 MPa. Moreover, the ECC material exhibited an equivalent flexural fatigue life to that of concrete at approximately two times the applied stress. Based on the experimental findings, it was shown that the cost-effective ECC materials with low fiber content can be promising for pavement application.

scholarly journals Preliminary Analysis of the Ductility and Crack-Control Ability of Engineered Cementitious Composite with Superfine Sand and Polypropylene Fiber (SSPP-ECC)

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2609
Author(s):  
Zhiqing Zhu ◽  
Guojin Tan ◽  
Weiguang Zhang ◽  
Chunli Wu
Keyword(s):  
Crack Width ◽  
Large Scale ◽  
Bending Strength ◽  
Flexural Modulus ◽  
Silica Sand ◽  
Surface Model ◽  
Cementitious Composite ◽  
Crack Control ◽  
Engineered Cementitious Composite ◽  
Pva Fiber

Engineered cementitious composite (ECC) is a potential cement-based material with the abilities of large deformation and crack width control. However, ECC is difficult to popularize in many developing countries because the costs of silica sand and polyvinyl alcohol (PVA) fiber with a surface coating are too high for practical engineering. Therefore, we proposed an economical ECC with superfine river sand and polypropylene (PP) fiber (SSPP-ECC) to replace PVA fiber and silica sand. The SSPP-ECC proposed in this paper is a sustainable material using local material ingredients, which has considerable adaptability for large-scale engineering applications. The 16 groups of specimens were prepared through a factorial design method, curing for four-point bending tests. The bending strength, deflection, flexural modulus of elasticity, and crack width were measured and calculated during the test. The factor analysis of the test results shows that the contents of fiber and fly ash had significant effects on the ductility of SSPP-ECC with an extra combined effect at the same time, and a response surface model with high accuracy was fitted to predict the yield length of SSPP-ECC. The ductility of SSPP-ECC was positively related to its crack-control ability and it was shown that the crack width of SSPP-ECC increased significantly with a high content of superfine sand. This paper proposed a reasonable way to utilize superfine sand and provided the mix proportion of SSPP-ECC with characteristics of deformation hardening and multi-cracking, which may cater to the demands of many concrete components on ductility and crack resistance.

scholarly journals Shear Load-Displacement Curves of PVA Fiber-Reinforced Engineered Cementitious Composite Expansion Joints in Steel Bridges

2019 ◽  
Vol 9 (24) ◽  
pp. 5275
Author(s):  
Liqiang Yin ◽  
Shuguang Liu ◽  
Changwang Yan ◽  
Ju Zhang ◽  
Xiaoxiao Wang
Keyword(s):  
Composite Structure ◽  
Composite Structures ◽  
Shear Load ◽  
Cementitious Composite ◽  
Fiber Reinforced ◽  
Expansion Joints ◽  
Failure Characteristics ◽  
Engineered Cementitious Composite ◽  
Load Displacement ◽  
Pva Fiber

The concrete in the transition strips of expansion joints can become damaged prematurely during the service period. Polyvinyl alcohol (PVA) fiber-reinforced engineered cementitious composite (ECC) is a kind of high ductility concrete material, and its ultimate uniaxial tensile strain is more than 3%. It can be used to improve the damage status of expansion joints. Based on previous research results, ECCs were used in the pilot project of bridge expansion joints. Under this engineering background, the shear load-displacement curves of ECC expansion joints were studied through 27 groups of compression-shear tests of ECC/steel composite structures. The shear failure characteristics of ECC expansion joints were analyzed by the digital image correlation method. A shear load-displacement curve model of the composite structures was proposed based on the equivalent strain assumption and Weibull distribution theory. The results show that the failure mode of the composite structure specimens was ECC shear cracking. Stress and strain field nephograms were used to explain the failure characteristics of the composite structure specimens. The calculated curves of the shear load-displacement model of the composite structures were in good agreement with the experimental curves. The work is of great importance to the shear design of ECC expansion joints and their further engineering applications.

scholarly journals Study on Evaluation Method for PVA Fiber Distribution in Engineered Cementitious Composite

2003 ◽  
Vol 1 (3) ◽  
pp. 265-268 ◽  
Author(s):  
Shin-ichi Torigoe ◽  
Tetsuo Horikoshi ◽  
Atsuhisa Ogawa ◽  
Tadashi Saito ◽  
Toshihiro Hamada
Keyword(s):  
Evaluation Method ◽  
Fiber Distribution ◽  
Cementitious Composite ◽  
Engineered Cementitious Composite ◽  
Pva Fiber

Development of Green Engineered Cementitious Composites

2014 ◽  
Vol 1020 ◽  
pp. 3-8 ◽  
Author(s):  
Marek Jašek ◽  
Jiri Brozovsky ◽  
Lucie Mynarzová ◽  
Jan Hurta
Keyword(s):  
Fly Ash ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Partial Replacement ◽  
Cement Composites ◽  
Green Composites ◽  
Cementitious Composite ◽  
Fly Ashes ◽  
Natural Sources ◽  
Green Materials

A development of fiber-cement composites is often focused on cost-effective and environmentally friendly materials (so-called green materials). Production of this material should produce less waste and it also should use less energy and less natural sources. There are numerous approaches to the development of green composites. One of the possible ways is a utilization of fly ashes instead of the cement part of composite. The paper discusses a development of green cementitious composite which incorporated fly ash materials produced in the Moravian-Silesian region as a partial replacement of the cement part of the composite.

scholarly journals Experimental Analysis on Tensile Behavior of Engineered Cementitious Composite (ECC) using Polypropylene Fiber

2018 ◽  
Vol 4 (8) ◽  
pp. 1799 ◽  
Author(s):  
Ali Raza Khoso ◽  
Muhammad Fahim ◽  
Shanker Lal Mehgwar ◽  
Muhammad Akram Akhund
Keyword(s):  
Tensile Strength ◽  
Fly Ash ◽  
Testing Machine ◽  
Polypropylene Fiber ◽  
Critical Issue ◽  
Cementitious Composite ◽  
Normal Concrete ◽  
Strain Capacity ◽  
Engineered Cementitious Composite ◽  
Coarse Aggregates

The high demand of tensile strength in concrete is always a critical issue for engineers, as 10% of the compressive strength is not sufficient to withstand higher loadings. Lesser ductility and strain capacity is another major issue of normal concrete. In the queue of modern researches, this paper is an attempt to study Engineered Cementitious Composite (ECC) from research of Professor Victor Li, the University of Michigan. ECC is an ultra-ductile cementitious composite which is highly crack resistant, with a high tensile strain capacity over that of normal concrete. The composite replaces coarse aggregates and fine aggregates by sand and fly ash respectively. ECC is made up of OPC, sand (passing from 250 µm and retained on 150µm), Fly Ash (Class F) with addition of Polypropylene fiber on different percentages i.e. 0%, 0.25%, 0.5%, 0.75%, 1.0% were studied. Tensile Strength of ECC was measured by casting & testing cylinders of 4”x 8” in Universal Testing Machine (UTM). The experimental results revealed that 111.40% increment in tensile strength was found at 0.5% PP fiber at ECC 1:1:1 and an increment of 74.74% was observed at ECC 1:0.8:1.2 at 1% PP fiber. The study concludes that this composite could substitute the normal concrete where high tension is the ultimate requirement with higher strain capacity.

Mechanical Properties of Engineered Cementitious Composites Mixture

2014 ◽  
Vol 567 ◽  
pp. 428-433 ◽  
Author(s):  
Bashar S. Mohammed ◽  
Muhammad Hafiz Baharun ◽  
Muhd Fadhil Nuruddin ◽  
Odu Paul Duku Erikol ◽  
Nadhir Abdulwahab Murshed
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Flexural Strength ◽  
The Self ◽  
Cementitious Composite ◽  
Fresh Properties ◽  
Self Compacting Concrete ◽  
Engineered Cementitious Composite ◽  
Hardened Properties ◽  
Pva Fiber

The aim of the research is to develop engineered cementitious composite mixtures satisfying the self-compacting concrete requirements and to evaluate the hardened properties of self-compacted ECC mixtures. To enhance the concrete performance, PVA is used. The PVA improved some characteristics and properties of the concrete. Ten mixes with different Polyvinyl Alcohol (PVA) fiber contents (0.0%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5% and 5.0%) have been prepared. Three cubes (100mm x 100mm x 100mm), three beams (100mm x 100mm x 500mm) and three cylinders (150mm diameter and 300mm height) have been cast for each mix and tested at the age of 7 and 28 days for compressive strength and at age of 28 days for splitting and flexural strength. The V-funnel, L-box and slump test also have been conducted to access the fresh properties like workability and flowability of the concrete. The results indicated the increase in the strength of the concrete and the formulas for predicting the compressive, splitting and flexural strength from PVA (%) has been developed.

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