Engineered Cementitious Concrete Project Preparation

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ENGINEERED CEMENTITIOUS CONCRETE PROJECT PREPARATION
By (Student’s name)
Professor’s Name
Course
City
Submission Date

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Abstract
Drifting from the conventional reinforced concrete, ECC is becoming popular in construction
sites due to its superior mechanical properties. This paper goes through various pieces of
literature, reviewing their contents before evaluating their test results. Additionally, the evaluated
mechanical properties are used in developing better performing ECC design mixes and tests
methods that will help in the project’s design structures enduring earthquake loading.

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1. Introduction
The most common materials in construction both locally and internationally are concrete. There
is a type of concrete that is relatively new known as engineered cementitious composites (ECC).
This type of concrete consist of a mix of cement, fine sand, water, chemical admixtures and
fibres reinforced with high-performance fibre. This fibre is made up of polyvinyl alcohol fibres
(PVA). Engineered cementitious composites work the same way as concrete when compressed
however, ECC consists of superior tensile elements (Jang et al. 2019).
This article is a detailed literature review addressing crucial ECC aspects. This includes
reviewing every aspect in respect to ECC, testing and mixture designs of the materials. The
reviewed literature is thereby evaluated and concluded to create specifications for designing,
finishing and placing of ECC that endure earthquake loading (Arulmurugan 2018).
2. Literature Review
This part outlines a summarized compiled data obtained from a comprehensively reviewed
literature on mixture compositions, mixture designs, and research studies available as well as the
hardened and fresh features of ECC.
2.1. Long-term ECC durable performance
Yin et al. (2018) studied ECC's long-lasting durability in relation to accelerated weathering
exposure, skid resistance, freeze-thaw exposure, longevity tensile strain capacity and fatigue
loading. The aim is to determine ECC's resistance to the environmental impacts for many years.
The table below illustrates the summarized research findings (Liu et al. 2019; Reddy & Ravitheja
2019).

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Properties Findings
Accelerated
weathering
 Tensile strain capacity dropped due to the changes in the matrix or
fibre interface elements with time.
 ECC’s tensile strain reduced to 2.75% from 4.5% after exposure to
accelerated weathering for 26 weeks equivalent to 70 years of
exposure.
Freeze-thaw
resistance
 Concrete samples could not withstand 300 freeze-thaw cycles.
 After 300 cycles of freeze-thaw, the ECC samples attained a 3 %
tensile strain
Skid resistance  Skid resistance studies reveal all the four tested finishing procedures
enabled the ECC samples to gain enough AWI skid resistance.
 The proposed method of finishing was transverse tined groves that
produced AWI tested value of 2.3.
Durable tensile
strain
 An increase in the age of the sample decreased the ECC’s capacity
for tensile strain.
 A mixture of ECC with a strain of 5% in days obtained a strain of 3%
in 180 days.
 The expected constant capacity of tensile strain is 3% after 180 days.
Flexural
Fatigue
 An overlay of ECC showed superior performance than the concrete
overlay.
 ECC overlay exhibited very high deformations, multiple loading
capacity and fatigued life of higher magnitudes than the tested
concrete overlay.
 An ECC overlay proved to undergo no reflective fractures.
Table 1: summarized findings long-lasting durability research.