Optimum mix parameters of high-strength self-compacting concrete with ultrapulverized fly ash

2002 ◽  
Vol 32 (3) ◽  
pp. 477-480 ◽  
Author(s):  
Youjun Xie ◽  
Baoju Liu ◽  
Jian Yin ◽  
Shiqiong Zhou
Keyword(s):  
Fly Ash ◽  
High Strength ◽  
Self Compacting Concrete

scholarly journals Kajian Karakteristik Beton Memadat Sendiri yang Menggunakan Serat Ijuk (Hal. 54-65)

2018 ◽  
Vol 4 (4) ◽  
pp. 54
Author(s):  
Iis Nurjamilah ◽  
Abinhot Sihotang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Coarse Aggregate ◽  
Fresh Concrete ◽  
High Strength ◽  
Self Compacting Concrete ◽  
Palm Fiber ◽  
Fiber Concrete ◽  
Dilute Mixture

ABSTRAKKajian karakteristik beton memadat sendiri yang menggunakan serat ijuk merupakan sebuah kajian yang dilakukan untuk mengetahui pengaruh penambahan serat ijuk terhadap karakteristik beton memadat sendiri (SCC). Beton memadat sendiri yang menggunakan serat ijuk (PFSCC) didesain memiliki campuran yang encer, bermutu tinggi (= 40 MPa) dan memiliki persentase kekuatan lentur yang lebih baik. PFSCC  didapatkan dari hasil pencampuran antara semen sebanyak 85%, fly ash 15%, superplastizicer 1,5%, serat ijuk 0%, 0,5%; 1%; 1,5%; 2% dan 3% dari berat binder (semen + fly ash), kadar air 190 kg/m3, agregat kasar 552,47 kg/m3 dan pasir 1.063 kg/m3. Semakin banyak persentase penambahan serat ijuk ke dalam campuran berdampak terhadap menurunnya workability beton segar. Penambahan serat ijuk yang paling baik adalah sebanyak 1%, penambahan tersebut dapat meningkatkan kekuatan tekan beton sebesar 13% dan lentur sebesar 1,8%.Kata kunci: beton memadat sendiri (SCC), beton berserat, beton memadat sendiri yang menggunakan serat ijuk (PFSCC), serat ijuk ABSTRACTThe study of characteristics self compacting concrete using palm fibers is a study conducted to determine the effect of adding palm fibers to characteristics of self compacting concrete (SCC). palm fibers self compacting concrete (PFSCC) is designed to have a dilute mixture, high strength (= 40 MPa), and have better precentage flexural strength. PFSCC was obtained from mixing of 85% cement, 15% fly ash, 1.5% superplastizicer, 0%, 0.5%, 1%, 1.5%, 2% and 3% palm fibers from the weight of binder  (cement + fly ash), water content 190 kg/m3, coarse aggregate 552.47 kg/m3 and sand 1,063 kg/m3. The more persentage palm fibers content added to the mixture makes workability of fresh concrete decreases. The best addition of palm fiber is 1%, this addition can increases the compressive strength 13% and flexural strength 1.8%.Keywords: self compacting concrete (SCC), fiber concrete, Palm fiber self compacting concrete (PFSCC), palm fiber

Studies on Durability Factors of Self Compacting Concrete

2021 ◽  
pp. 29-31
Author(s):  
Seshadri Sekhar Tirumala
Keyword(s):  
Fly Ash ◽  
Transition Zone ◽  
High Strength ◽  
Growing Up ◽  
Micro Structure ◽  
Self Compacting Concrete ◽  
High Rise ◽  
Durability Properties ◽  
The Matrix ◽  
Two Phases

The demand for high strength self compacting concrete is growing up today due to the increase of high rise structures across the globe because of its durability and ease of its place ability. It is very important to study its durability properties as it effects on economy, serviceability and maintenance. it is well known that the properties of concrete are affected by cementitious matrix, aggregate and the transition zone between the two phases. Reducing water powder ratio and addition of pozollona admixtures like Fly ash and Microsilica are often used to modify the micro structure of the matrix and to optimize the transition zone. An attempt was made to study the durability factors of High Strength Self Compacting Concrete Mixes. Durability properties have been established by exposing the concrete to Acidic and Suplhate medium.

scholarly journals An Experimental Investigation on the Properties of High Volume Flyash Glass Fibre Reinforced Self Compacting Concrete

2019 ◽  
pp. 650-657
Author(s):  
Chikluru Arifa ◽  
K. Mohammed Rasheed ◽  
C. Ramachandrudu
Keyword(s):  
Fly Ash ◽  
High Strength ◽  
High Volume ◽  
The Self ◽  
Fibre Reinforcement ◽  
Self Compacting Concrete ◽  
Engineering Discipline ◽  
Binder Ratio ◽  
Glass Fibre Reinforced ◽  
Water To Binder Ratio

Civil engineering is a professional engineering discipline that deals with the designing and construction. In construction one of the main resource is concrete in the world. The concrete is day-to-day have many changes like strength, durability, shrinkage. This project deals with the self-compaction concrete with use of fibre reinforcement. The self-compacting in concrete is achieved by adding super plasticizers and glass fibres are used as reinforcement. The influence of including fly ash on the properties of self-compacting concrete is investigated. Fly ash is introduced by 50% in the total weight of cement. The water to binder ratio was maintained at 0.38%. Properties included workability, compressive strength, split tensile test, modulus of elasticity and shrinkage. The results indicate the high volume FA can be used in SCC to produce the high strength and low shrinkage. Increasing the admixture content beyond the certain level leads to a reduction in strength and increasing in absorption. Making concrete structure without compaction has been done in the past. Like placement of concrete under water by the use of term without compaction. Inaccessible areas were concrete using such a techniques. The production of such mixes use expensive admixtures ad large amount of cement but such type of concrete is low strength. To eliminate such issues lead to the development of self-compacting concrete (SCC). Usage of fibres makes the mixing of concrete complex. Self-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compaction.

scholarly journals Mix proportioning of M80 grade Self-Compacting Concrete based on Nan Su Mix design method principles

2018 ◽  
Vol 7 (3.35) ◽  
pp. 52
Author(s):  
S Shrihari ◽  
M V Seshagiri Rao ◽  
V Srinivasa Reddy ◽  
Venkat Sai
Keyword(s):  
Fly Ash ◽  
High Performance ◽  
Design Method ◽  
High Strength ◽  
Mix Design ◽  
Fine Aggregate ◽  
Self Compacting Concrete ◽  
Mix Proportioning ◽  
Major Factors ◽  
Powder Content

The quest for the development of high strength and high performance concretes has increased considerably in recent times because of the demands from the construction industry. High-performance concretes can be produced at lower water/powder ratios by incorporating these supplementary materials. Fly ash addition proves most economical among these choices, even though addition of fly ash may lead to slower concrete hardening. However, when high strength is desired, use of silica fume is more useful. This paper proposes a mix proportions for M80 grade Self-compacting concrete (SCC) based on Nan Su mix design principles. First, the amount of aggregates required is determined, and the paste of binders is then filled into the voids of aggregates to ensure that the concrete thus obtained has flowability, self-compacting ability and other desired SCC properties. The amount of aggregates, binders and mixing water, as well as type and dosage of superplasticizer (SP) to be used are the major factors influencing the properties of SCC. Slump flow, V-funnel, L-flow, U-box and compressive strength tests were carried out to examine the performance of SCC, and the results indicate that the Nan Su method could produce successfully SCC of high strength. Based on Nan Su mix design method, material quantities such as powder content ( Cement + Pozzolan ), fine aggregate, coarse aggregate, water and dosages of SP and VMA,  required for 1 cu.m,  are evaluated for High strength grade (M80) of Self Compacting Concrete (SCC) are estimated. Final quantities, of M80 grade SCC mix, is assumed after several trial mixes on material quantities computed using Nan Su mix design method subjected to satisfaction of EFNARC flow properties. 

scholarly journals Effect of Electrically Precipitated Fly Ash(EPFA) On Fresh and Hardened Properties of High Strength Self- Compacting Concrete

2021 ◽  
Author(s):  
Sambangi Arunchaitanya ◽  
E. Arunakanthi
Keyword(s):  
Fly Ash ◽  
Heterogeneous Material ◽  
High Strength ◽  
Partial Replacement ◽  
Self Compacting Concrete ◽  
Split Tensile Strength ◽  
Conventional Concrete ◽  
Filling Ability ◽  
Chemical Admixture ◽  
Passing Ability

Abstract Concrete is the most common heterogeneous material in the construction industry. Admixtures have gained wide use in modern constructions, which are having congested reinforcement with ambitious casting conditions. For such applications, self-compacting concrete (SCC) is the only special concrete, which can have high cohesiveness and fluidity. This paper shows the study on the fresh properties, compressive, flexural and split tensile strength in addition to RCPT, sorptivity of SCC with partially replaced electrically precipitated fly ash (EPFA) from 0 to 30% at 5% interval in cement and polycarboxylate ether-based superplasticizer as a chemical admixture. Compared the results with conventional SCC mix the fresh concrete performance was studied through the measurement of passing ability, filling ability and flowing ability by using L-Box, U-Box, V-Funnel and slump flow. The results showed that 20% EPFA as partial replacement to SCC gives better results than the conventional concrete, thereby leading to economical profits as well as ecological benefits.

Study on Strength Development of High Strength Concrete Containing Alccofine and Fly-Ash

2012 ◽  
Vol 2 (3) ◽  
pp. 102-104 ◽  
Author(s):  
Suthar Sunil B ◽  
◽  
Dr. (Smt.) B. K. Shah Dr. (Smt.) B. K. Shah
Keyword(s):  
Fly Ash ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Development ◽  
Strength Concrete
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