NPTEL :: Civil Engineering - Concrete Technology

Sl.No Chapter Name MP4 Download; 1: Production and Composition: Download: 2: Structure and Hydration: Download: 3: Structure and Hydration. Download: 4: Properties ...

Learn More

Underwater Concrete - an overview | ScienceDirect Topics

Underwater concrete technology has developed dramatically in recent years, so that the mix can be proportioned to ensure high fluidity as well as high resistance of washout and segregation. The construction of a wide range of structures including bridge piers, harbors, sea and river defences over many decades, and the development of offshore oilfields, has required placement of concrete underwater.

Learn More

MARINE WATER EFFECT ON COMPRESSIVE STRENGTH OF CONCRETE: A ...

corrosion resistant reinforcements and inhibitors sea water can be satisfactorily used in concrete production [6-11]. However, in some communities where seawater abound, it is virtual impossible to produce concrete without seawater. This necessitates this work. 2. DESIGN OF CONCRETE MIX The concrete materials which will be used for the

Learn More

[PDF] Concrete Technology Books Collection Free Download ...

Concrete is a construction material composed of cement, fine aggregates (sand) and coarse aggregates mixed with water which hardens with time. Portland cement is the commonly used type of cement for production of concrete. Concrete technology deals with study of properties of concrete and its practical applications. In a building construction, concrete is used for the construction of ...

Learn More

(PDF) Advanced-Concrete-Technology-2 | Vat Lieu k51 ...

Academia.edu is a platform for academics to share research papers.

Learn More

PDF Possibility of Sea Water as Mixing Water in Concrete

Possibility of Sea Water as Mixing Water in Concrete Nobuaki Otsuki1, Tsuyoshi Saito2 and Yutaka Tadokoro3 1. Department of International Development Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan 2. Department of Civil Engineering and Architecture, Niigata University, Niigata 950-2185, Japan ...

Learn More

effect of sea water on the compression strength of concrete

To design a concrete, which can withstand the attack of sea water, a coal ... of high performance concrete”, Journal of Construction Building Materials, 23 (2), 878-888. ... Mehran University Research Journal of Engineering & Technology, Vol. by K AMBIGA · ‎2017 · ‎Related articles

Learn More

Concrete Technology 2 Concrete Seawater - peakedness

2017-6-3 · concrete, it still remains an area requiring further study and research for the use of structural concrete in marine environment. 1.2 SEA WATER Sea ...

Learn More

A Review on Strength of Concrete in Seawater - IJERT

Falah M. Wegian (2010) investigated the effects of mixing & curing of concrete with sea water on the compressive, tensile, flexural, and bond strengths and showed that there were increase of strengths of concrete when mixed & cured in sea water at early ages and a decrease for ages more than 28 days and up to 90 days.

Learn More

The Secret Ingredient in Ancient Roman Concrete is Seawater ...

Jul 03, 2017 · The Romans made concrete by mixing volcanic ash with lime and seawater to make a mortar, and then incorporating into that mortar chunks of volcanic rock, the "aggregate" in the concrete. The combination of ash, water, and quicklime produces what is called a pozzolanic reaction, named after the city of Pozzuoli in the Bay of Naples.

Learn More

Concrete Technology 2 | Concrete | Seawater - Scribd

May 4, 2012 — By Dr. Kamaran Gardy. Concrete Technology II References: 1-Concrete technology (theory and practice) by M.S.SHETTY New Delhi India2010 ...

Learn More

The Effect of Sea Water on Compressive Strength of Concrete

Cement concrete cubes of 150mm x 150mm x 150mm were cast using fresh water and sea water with mix ratio 1:2:4. All the mixes were prepared using constant water cement ratio (w/c) of 0.6 by weight.

Learn More

New Technology Development to Utilize CO2 by Converting it ...

This project will work on the development of a technology that reacts CO2 with the magnesium contained in seawater, producing a resource that can be used as a building material such as the aggregate in concrete. If this technology is established and commercialized, it is expected to lead to a significant reduction in CO2 emissions while ...

Learn More

Concrete Technology - Government Polytechnic Asthawan ...

Concrete Technology. Subject Code: ... of Cement. Introduction to Concrete Technology and detailed ... 2. Hydration of Cement; Physical properties of. Ordinary Portland cement (OPC), ... water retaining structure & in sea water construction,.

Learn More

TOP 175+ Concrete Technology Multiple choice Questions ...

Concrete Technology Objective type Questions and Answers. Dear Readers, Welcome to Concrete Technology Objective Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of Concrete Technology MCQs.These objective type Concrete Technology questions are very important for campus placement …

Learn More

Concrete Technology 2 | Concrete | Seawater

By Dr. Kamaran Gardy. Concrete Technology II References: 1-Concrete technology (theory and practice) by M.S.SHETTY New Delhi India2010. 2-Concrete technology by A.M. Neville, Second edition. 3-Properties of Concrete by A.M. Neville, Fourth edition. 4-Advanced concrete technology by Jon Newman. Ban Seng Choo. 5-Concrete Technology , by B.L. GUPTA, 3rd edition, 2004 Content: 1- Quality of Water ...

Learn More

Concrete in Marine Environments| Concrete Construction ...

Concrete has had extensive use as construction material for seawalls, jetties, groins, breakwaters, bulkheads, and other structures exposed to sea water. The performance record has generally been good. Cases of comparatively rapid deterioration have usually resulted from failure to consider and ...

Learn More

Durability of seawater and sea sand concrete and seawater ...

Jul 27, 2020 — Seawater sea sand concrete–filled stainless steel tubes did not show any ... Shenzhen, China: Southern University of Science and Technology. ... on the behaviour of cement pastes and concrete Part 2: properties of cement ... by YL Li

Learn More

Marine Concrete Technology - jstor

This paper deals with the early development of concrete technology and the structural ... ADDITIONAL INDEX WORDS: Concrete, sea water, exposure, climate, ... 2. Temp casting of a cyl concrete was h in order to ma first six hours. 15?C. In. by GM Idorn · ‎1991 · ‎Cited by 9 · ‎Related articles

Learn More

Concrete Technology in Focus - BASF

2. Move right to concrete temperature 3. Move down to wind velocity 4. Move left; read approx. rate of evaporation In ACI 305R [2], it is recommended that precautions against plastic shrinkage cracking should be taken if the evaporation rate from the exposed concrete surface is expected to approach 0.2 Ib/ft2/h (1.0 kg/ m2/h). The evaporation ...

Learn More

Advanced Concrete Technology 2: Concrete Properties by ...

Advanced Concrete Technology 2: Concrete Properties - Ebook written by John Newman, B S Choo. Read this book using Google Play Books app on your PC, android, iOS devices. Download for offline reading, highlight, bookmark or take notes while you read Advanced Concrete Technology 2: Concrete Properties.

Learn More

Advanced Concrete Technology

developments, and new innovations in concrete technology. The unique ... 2. Chapter 1 Introduction to Concrete and is then further reacted with CO2 to form limestone again: ... At the other extreme, seawater, which contains about 34,000ppm.

Learn More

Effect on concrete properties of mixing and curing with ...

Concrete constitutes of mainly, cement, water and aggregates. It is common practice to use potable water for concrete, however in South Africa a shortage of water has become an issue of concern. Other sources of water should hence be investigated. Seawater as a source of water to produce concrete is to be investigated.

Learn More

(pdf) strength development of fly ash concrete using sea water ...

Oct 11, 2020 — PDF | This study reports on the effect of sea water, used as mixing water, ... The amount of Ca(OH)2 in the concrete matrix decreased when concrete age increased. ... Cement Science and Concrete Technology, Vol.68.

Learn More

Influence of Seawater in Strengths of Concrete Mix Design ...

In this paper, the effect of seawater on concrete mix was studied. Seawater was fetched from the Red Sea near Port Sudan. Forty eight concrete cubes were prepared using constant water/cement ratio. The first two groups were both mixed with fresh water then cured in fresh water and seawater, respectively.

Learn More

A Comprehensive Review on Effects of Seawater on ...

10/21/2020 · The concrete and natural seawater have a complex relationship between them, which requires special attention. Therefore, various studies have been conducted to consider the effects of natural seawater on the properties of concrete. However, this study aimed to summarize and analyze the previous findings and recommendations. It was noticed that the natural seawater has both positive …

Learn More

Concrete Technology CPD Stage 2

This concrete training software provides up to date information for specifiers, producers and contractors. Click here to download the software free on Windows 10. Reduce your CO2 emissions. Candidates can optionally use this content to gain a qualification in "Concrete Technology & Construction Stage 2" awarded by the ICT, UK.

Learn More

SEACON: Redefining Sustainable Concrete - Civil ...

Aug 11, 2016 — a concrete made from seawater and/or salt-contaminated aggregates (natural or ... alternative noncorrosive reinforcement material technologies, such as ... ii) Durability properties: GFRP rebars were embedded in concrete ...

Learn More

CEMENT and CONCRETE TECHNOLOGY

hydration, tests of cement, paste and mortar (lecture 1, 2 and 3) (5 hours). ❖ Water: mixing ... Sea Water. • Seawater containing up to 35,000 ppm of dissolved. by EA Al Kourd · ‎Cited by 2

Learn More

Research team recreates ancient underwater concrete technology

Apr 07, 2005 · Roman seawater concrete holds the secret to cutting carbon emissions. Jun 04, 2013. ... Research team recreates ancient underwater concrete technology. Your friend's email. Your email.

Learn More