A Review on the Life Cycle Assessment Phases of …
The prime objective of life cycle impact assessment (LCIA) is to unite life cycle inventory results to the equivalent environmental effects. There is a large number of …
The impact of using rice husk ash as a replacement material in concrete …
In this study, the impact of adding RHA in different ratios (0%, 7%, and 14%) as a replacement of ordinary Portland cement with different water–cement ratios (0.3, 0.5, and 0.7) and cured in water for different periods (10, 20, and 30 days) both on the durability and strength of the concrete and on its corrosion was investigated.
Experimental Study on the Compressive Strength and …
This study employed a comprehensive experimental design to investigate cement concrete specimens subjected to typical temperature variations (20-60 °C) and different numbers of temperature differential cycling (0, 60, 120, 180, 240, 300). Axial compressive strength tests, ultrasonic tests, and compressive fatigue tests were …
A comprehensive review of partial replacement of …
This study demonstrates that when cement is replaced by FA in concrete, the sorptivity of concrete increases with the replacement level. But in case of concrete …
Manufacture of full-scale geopolymer cement concrete …
scale geopolymer cement concrete components. This paper discusses mechanical characteristics of geopolymer cement concrete, quality of form finishes, strategies for curing, and challenges to full-scale production. Manufacture of full-scale geopolymer cement concrete components: A case study to highlight opportunities and challenges
A REVIEW PAPER ON STUDY OF EFFECT OF COARSE …
In present study pre-coating of RCA using cement slurry with various percentages(0,2,4,6,8,10) have been used to improve the strength characteristics of Concrete made using RCA. It is concluded that precoating technique using cement slurry on RCA is effective in improving the mechanical properties of concrete.
MIT Concrete Sustainability Hub – Concrete and …
Why study concrete sustainability? More concrete is produced than any other material on Earth. In the foreseeable future, there is no other material that can replace concrete to meet our societies' needs for housing, …
A review of X-ray computed tomography of concrete and …
Fig. 2 demonstrates a simplified method of porosity analysis in a small concrete sample with a roughly disk-shaped geometry and diameter of 8 mm. The Fig. 2 (a) shows a CT slice image in greyscale, with a large spherical pore shown in the bottom right of the sample, and various smaller irregular shaped pores (black). Also clear are the …
Hot mixing: Mechanistic insights into the durability …
In this work, we successfully demonstrate that these ancient concrete design practices could be applied for the development of modern OPC-based formulations, thus showing far-reaching implications for extended …
Environmental impacts and decarbonization …
Published: 22 September 2020. Environmental impacts and decarbonization strategies in the cement and concrete industries. G. Habert, S. A. Miller, V. M. John, J. L. Provis, A. …
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Our publications will provide you with information and knowledge 24/7, keeping you informed of what is happening in the South African cement and concrete industry. Secure your future with a solid foundation and study with The School of Concrete Technology, offering internationally recognized courses for anyone interested in mastering concrete.
An experimental study on cement concrete with …
The experimental findings include compressive strength (CS), flexural strength (FS) and split tensile. strength (STS) by partially cement replacement with Industrial IFA and PG employing 0 %, 5 ...
Manufacture of full-scale geopolymer cement concrete …
This paper presents a case study of the manufacture of full-scale geopolymer cement concrete components. Mechanical characteristics of geopolymer cement concrete produced at the plant, quality of form finishes, and strategies for curing are described. Challenges to full-scale production, as identified by plant personnel and the research …
(PDF) Manufacture of full-scale geopolymer cement concrete components
As an alternative building material to ordinary Portland cement, geopolymer has been extensively studied because of the reduced amount of CO 2 emission during its production process (Oyebisi et al ...
Cement and concrete flow analysis in a rapidly expanding …
In dMFA studies, material intensity has also been used to assess building material stocks, such as concrete, cement, and timber. 33,85, 93 Cumulatively, the dwelling intensity effect is the most ...
Cement and Concrete
In its simplest form, concrete is a mixture of paste and aggregates. The paste, composed of portland cement and water, coats the surface of the fine and coarse aggregates. Through a chemical reaction called hydration, the paste hardens and gains strength to form the rock-like mass known as concrete. Within this process lies the key to a ...
Experimental investigation on mechanical properties of concrete …
1. Introduction. Concrete is a composite construction material made up of water, cement, aggregates (fine and coarse), and sometimes extra materials called admixtures and is widely used in civil engineering works [1], [2], [3], [4].This is because concrete is by far the most durable construction material, robust, and performs well …
A Case Study of Pavement Foundation Support and …
Surface cracks and joint deteriorations are typical premature failures of urban cement concrete pavement. However, traffic loads on the urban pavement are much lower than those on highways. Limited research has been conducted to investigate the causes of accelerated damage in urban cement concrete roads. To investigate the …
Cement and Concrete as an engineering material: an historic appraisal
To conduct our study, we prepared concrete specimens in the form of both cylinders and cubes. These specimens were produced using two primary types of aggregates: coarse aggregate and ...
Environmental impacts and decarbonization strategies in the cement …
A national study in Brazil showed that the waste material produced by concrete construction activities can be as high 50– of the mass of concrete used in the building, and highlighted that ...
Study on the shear strength and damage constitutive model …
In the past 100 years, concrete primarily composed of cement, sand, gravel, and water, has been the most commonly used man-made building material by virtue of its high strength, low cost, easily obtained raw materials [1], [2].One of the representative applications of concrete structures is the concrete drainage pipes.
Reduction of CO2 environmental pollution from concrete, …
Cement industries are one of the biggest sources of CO 2 emissions. Considering the high consumption of cement in the construction industry, replacing materials with cement properties in order to reduce CO 2 pollution is one of the priorities. In this article, a natural pozzolan from Iran with suitable specifications to replace part of …
A Review on the Life Cycle Assessment Phases of Cement and Concrete …
8.2.1 Goal and Scope of Cement and Concrete Manufacturing LCA. The goal of carrying out an LCA study of concrete is to state the prophesied use and the reasons for conducting the study. Scope of concrete manufacturing LCA consists of the production systems that are to be studied, the functional unit, system boundaries, and the allocation …
Cement and concrete as an engineering material: An …
Second only to water, concrete is the most consumed material in the world. The historic development of cements and concrete are reviewed. Mechanical response …
Role of red mud as a cementing material in concrete: a
Red mud (RM), a semi-solid residual of the alumina refinery process, has higher alkalinity, and its disposal leads to environmental imbalance. To overcome this issue, RM is partially replaced with cement in the range of 0% to 20% at an interval of 5%. The present research work majorly focused on durability and micro-level concrete studies …
Effect of recycled seashells on concrete properties: A …
The aim of this study is to results obtained from the literature that uses seashell wastes as cement replacement and their effect on the properties of cement concrete. Also, this review study the potential use of seashells to replace cement and to maintain the natural materials from depletion, thus achieving sustainability in eco-friendly ...
Manufacture of full-scale geopolymer cement concrete …
Carbon dioxide emissions from geopolymer cement concrete are low compared with portland cement concrete, and the binder incorporates high volumes of the recycled material fly ash. The typical strength of the resulting materials ranges from 4000 to 10,000 psi (28 to 69 MPa) depending on mixture proportions, aggregates, and curing.
CONCRETE MANUAL WORKBOOK
This workbook is intended to provide practical learning assignments for independent study of the Concrete Manual. The independent study format provides a method for the student to complete the study program ... the role of admixtures and the water-cement ratio, define "good, durable concrete" and the causes of distress or failure, and ...
A systematic review and assessment of concrete strength …
1. Introduction. Concrete is a widely consumed construction material second to water in the world, accounting for nearly 30 billion tons per year due to its low price and ease of preparation [1], [2], although it is a complex and multi-phase material [3].When cement reacts with water, chemical reactions called 'hydration' occur slowly and …
Cement and Concrete Research | Journal
The aim of Cement and Concrete Research is to publish the best research on the materials science and engineering of cement, cement composites, mortars, concrete and other …