Comparative assessment of pervious concrete mixtures containing fly ash and nanomaterials for compressive strength, physical durability, permeability, water quality performance and production cost

2017 ◽  
Vol 139 ◽  
pp. 148-158 ◽  
Author(s):  
Valerie López-Carrasquillo ◽  
Sangchul Hwang
Keyword(s):  
Water Quality ◽  
Compressive Strength ◽  
Fly Ash ◽  
Production Cost ◽  
Comparative Assessment ◽  
Pervious Concrete ◽  
Quality Performance ◽  
Concrete Mixtures

scholarly journals Strength Time–Varying and Freeze–Thaw Durability of Sustainable Pervious Concrete Pavement Material Containing Waste Fly Ash

2018 ◽  
Vol 11 (1) ◽  
pp. 176 ◽  
Author(s):  
Hanbing Liu ◽  
Guobao Luo ◽  
Longhui Wang ◽  
Yafeng Gong
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Flexural Strength ◽  
Pervious Concrete ◽  
Early Age ◽  
Pavement Materials ◽  
Freeze Thaw ◽  
Replacement Method ◽  
Porosity And Permeability ◽  
Volume Method

Pervious concretes, as sustainable pavement materials, have great advantages in addressing a number of environmental issues. Fly ash, as the industrial by-product waste, is the most commonly used as cement substitute in concrete. The objective of this paper is to study the effects of waste fly ash on properties of pervious concrete. Fly ash was used to replace cement with equivalent volume method at different levels (3%, 6%, 9%, and 12%). The control pervious concrete and fly ash modified pervious concrete were prepared in the laboratory. The porosity, permeability, compressive strength, flexural strength, and freeze–thaw resistance of all mixtures were tested. The results indicated that the addition of fly ash decreased the early-age (28 d) compressive strength and flexural strength, but the long-term (150 d) compressive strength and flexural strength of fly ash modified pervious concrete were higher than that of the early-age. The adverse effect of fly ash on freeze–thaw resistance of pervious concrete was observed when the fly ash was added. The porosity and permeability of all pervious concrete mixtures changed little with the content of fly ash due to the use of equal volume replacement method. Although fly ash is not positive to the properties of pervious concrete, it is still feasible to apply fly ash as a substitute for cement in pervious concrete.

scholarly journals The Use of Fly Ash as Additive Material to High Strength Concrete

2018 ◽  
Vol 20 (2) ◽  
pp. 65-70
Author(s):  
Endah Kanti Pangestuti ◽  
Sri Handayani ◽  
Mego Purnomo ◽  
Desi Christine Silitonga ◽  
M. Hilmy Fathoni
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
High Strength Concrete ◽  
Building Materials ◽  
High Strength ◽  
Coal Waste ◽  
Normal Concrete ◽  
Strength Concrete ◽  
Concrete Mixtures ◽  
Compressive Strength Of Concrete

Abstract. The use of coal waste (Fly Ash) is currently being developed in building materials technology, as a high-strength concrete mix material. This study aims to determine the strength of concrete by adding fly ash as a substitute for cement in high-strength concrete mixtures. This research was conducted with an experimental method to obtain results and data that would confirm the variables studied. The total number of specimens used in this study were 36 pieces with different sizes of cube tests which were 15 cm x 15 cm x 15 cm. A total of 36 concrete samples were used to test the compressive strength of concrete with a percentage of Fly Ash in  0% (normal concrete), 20%, 25% and 30% with a concrete treatment age of 7 days, 21 days and 28 days. A total of 12 more samples were used to test water absorption in concrete at 28 days of maintenance. Each percentage percentage of Fly Ash uses 3 concrete test samples. The increase in compressive strength occurs at 7, 21 and 28 days in concrete. However, the compressive strength of concrete produced by concrete using the percentage of Fly Ash is always lower than the value of normal concrete compressive strength. From testing the compressive strength of concrete at 28 days of treatment with content of 0%, 20%, 25% and 30% Fly Ash obtained results of 45.87 MPa, 42.67 MPa, 40.89 MPa, and 35.27 MPa respectively

The Influence of Fly Ash and Aggregates Composition on Pervious Concrete Characteristics

2018 ◽  
Vol 917 ◽  
pp. 297-302
Author(s):  
Jul Endawati ◽  
R. Utami ◽  
Rochaeti
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Research Result ◽  
Strength Test ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Fine Aggregates ◽  
Compressive Strength Test ◽  
Binder Composition ◽  
Permeability Rate

Fly ash as a pozzolanic waste material can be utilized to substitute part of Portland cement in concrete mixture. The concrete paving industry utilizes the fly ash up to 50% (by weight) of the total binder. This study aims to obtain the characteristics of fly ash applications for pervious concrete. The composition of the binder developed based on the optimal proportion of fly ash from the previous study and the maximum of fly ash percentage used by the local paving industry in general. Other mix variations were made of the same binder composition with the addition of 6% of fine aggregates. The compressive strength of pervious concrete which binder composed of 63% portland cemet composite-25% fly ash-12% silica fume gained at 28 days, was not much different from the compressive strength of the pervious concrete without fine aggregate and with the binder composition of 50% FA-50% PCC and 0% SF. The value of the compressive strength test of the pervious concrete without fine aggregate is still within the range of compressive strength values ​​according to the ACI 522 R-10. The permeability rate of the pervious concrete is in the range of permeability research result of Chopra, 2013 (0.97 ÷ 1.90 cm/sec), but still higher compared to permeability rate gained by Dewoolkar, 2009 (0.83 ÷ 0.98 cm/sec).

scholarly journals Influence of Temperature on Workability and Compressive Strength of Ordinary Concrete with High Calcium Fly Ash

2017 ◽  
Vol 17 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Jacek Gołaszewski ◽  
Tomasz Ponikiewski ◽  
Grzegorz Cygan
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Portland Cement ◽  
Fresh Concrete ◽  
Influence Of Temperature ◽  
Ordinary Concrete ◽  
Concrete Mixtures ◽  
High Calcium ◽  
High Calcium Fly Ash ◽  
Influence Of Temperature On

Abstract The rheological properties of fresh ordinary concrete are closely affected by temperature and time. The paper presents the study of consistency of fresh concrete mixtures made with Portland cement and cement with calcareous fly ash. Two types of admixtures were used. It was proven that the temperature has a clear effect on workability and compressive strength concrete. Influence on workability can be reduced by selecting the appropriate superplasticizer and cement.

Effects of different size of fly ash as cement replacement on self-compacting concrete properties

2019 ◽  
Vol 1 (2) ◽  
pp. 180-186
Author(s):  
Dilan Rantung ◽  
Steve W.M. Supit ◽  
Seska Nicolaas
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Fly Ash ◽  
Building Construction ◽  
Particle Sizes ◽  
Self Compacting Concrete ◽  
Cement Replacement ◽  
Concrete Mixtures ◽  
Water Curing ◽  
Passing Ability

This paper aims to investigate experimentally the influence of replacing cement with different fineness of fly ash based on flowability, passing ability, compressive strength, tensile strength (splitting). Concretes with 15% fly ash (passed a number 100 sieve) and fine fly ash (passed a number 200 sieve) as cement replacement were cast and tested at 7, 14, 28 days after water curing. A superplasticizer in the form of viscocrete 3115 N was constantly used for each concrete mixtures as much as 1% by weight of cement. The results show that the use of fly ash does not significantly increased the compressive strength and tensile strength of SCC mixtures. However, concrete with 15% fine fly ash its self and combined 7.5% fly ash with 7.5% fine fly ash show better flowability and passing ability when compared to concrete with cement only indicating the performance of using smaller particle sizes of fly ash could lead better properties of SCC that can be potentially used for building construction application.

Rheological Characteristics of Alkali Activated Fly-Ash Concrete Mixtures

2016 ◽  
Vol 677 ◽  
pp. 86-92
Author(s):  
Tomáš Váchal ◽  
Rostislav Šulc ◽  
Pavel Svoboda
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Fresh Concrete ◽  
Rheological Characteristics ◽  
Fresh Mixture ◽  
Fly Ash Concrete ◽  
Concrete Mixtures ◽  
Alkali Activated Concrete ◽  
Alkali Activated

This paper describes rheological characteristics of concrete mixtures based on alkali-activated fly ash. There are shown relationships between workability of fly-ash fresh concrete mixtures and water–fly-ash ratio in fresh alkali-activated concrete. In addition, there is described relationship between workability in fresh mixture on compressive strength of alkali-activated concrete.

Influences of Mineral Admixture on Properties of Porous Pervious Concrete Made of Recycled Aggregates

2014 ◽  
Vol 919-921 ◽  
pp. 1934-1938
Author(s):  
Ping Gong ◽  
Yu Zhou
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Silica Fume ◽  
Permeability Coefficient ◽  
Mineral Admixture ◽  
Pervious Concrete ◽  
Recycled Aggregates

In this study,silica fume and fly ash were used to replace part of cement, the 28-days compressive strength and the permeability coefficient were tested to study influences of mineral admixture on properties of porous pervious concrete made of recycled aggregates.The results show the best effect is to multiplexed mix with fly ash and silica fume, the 28-day compressive strengths of concrete is higher than those single mixed or doesn’t mix any mineral admixture.

Properties of GGBFS-Based Pervious Concrete Containing Fly Ash and Silica Fume

2017 ◽  
Vol 266 ◽  
pp. 278-282 ◽  
Author(s):  
Jul Endawati
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Fly Ash ◽  
Flexural Strength ◽  
Silica Fume ◽  
Blast Furnace Slag ◽  
Aggregate Size ◽  
Pervious Concrete ◽  
Fine Aggregate ◽  
Furnace Slag

Pervious concrete primarily is used as a means of storm water management. Taking into consideration the environment issues, the binder can also be formed by partially replaced Portland cement by cementitious materials, such as blast furnace slag fine powder, fly ash and silica fume. The combination of the binder materials was determined based on previous work, which composed of 56% Portland Composite Cement, 15% fly ash Type F, 26% air-cooled blast furnace slag from a local steel Industry and 3% condensed silica fume. The compressive strength of specimens with coarser aggregate was lower compared with the control pervious concrete, but still within the range of the requirement compressive strength according to ACI 522R-2010. The difference of the aggregate size affected the enhancement of the compressive strength. The flexural strength of pervious concrete with aggregate size of 9.5mm-12.5mm tend to be higher compared with that of pervious concrete with smaller aggregate size. Furthermore, the addition of 6% natural fine aggregate while applying higher water/cement ratio could be a contribution to the enhancement of the compressive and the flexural strength.

scholarly journals Compressive strength of pervious concrete paving blocks for pavement with the addition of fly ash

2021 ◽  
Vol 1098 (2) ◽  
pp. 022046
Author(s):  
E Septiandini ◽  
I Widiasanti ◽  
C A Pamungkas ◽  
A S S Putri ◽  
T Mulyono ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Pervious Concrete

scholarly journals Studi Mengenai Kadar Maksimum Abu Terbang Sebagai Subtitusi Semen pada Campuran Beton dengan Kuat Tekan Tetap. (Hal. 42-51)

2019 ◽  
Vol 5 (3) ◽  
pp. 42
Author(s):  
Dewindha Putri Dewanti ◽  
Abinhot Sihotang
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Construction Projects ◽  
Blended Cement ◽  
Maximum Size ◽  
Concrete Compressive Strength ◽  
Current Effort ◽  
Fly Ash Concrete ◽  
Substitution Level ◽  
Concrete Mixtures

ABSTRAKPenggunaan beton dalam proyek konstruksi yang semakin besar, menuntut penggunaan semen yang semakin tinggi. Upaya yang banyak dilakukan adalah melakukan substitusi semen dengan suatu bahan yang sifatnya sama dengan semen. Abu terbang (fly ash) menjadi salah satu alternatif dalam pengurangan penggunaan semen. Pembuatan campuran beton normal digunakan cara SNI, dan untuk campuran beton abu terbang digunakan perancangan campuran beton metode Dreux dengan permodelan blended cement. Kuat tekan rencana yang dirancang sebesar 40 MPa dengan substitusi semen oleh abu terbang sebesar 0% sampai dengan 50%, dengan nilai pertambahan 5%. Ukuran maksimum agregat kasar yang digunakan adalah 20 mm, dan pengujian berupa kuat tekan beton dilakukakan saat umur beton mencapai 7 hari, 14 hari, dan 28 hari. Hasil kuat tekan beton umur 28 hari menunjukkan kadar maksimum substitusi semen oleh abu terbang menggunakan cara Dreux Gorrise dengan permodelan blended cement hanya mencampai kadar 20% abu terbang.Kata kunci: beton abu terbang, Dreux Gorrise, kuat tekan, semen blended ABSTRACTThe use of concrete in construction projects is getting bigger, demanding the use of cement which is increasingly high. The current effort is to do cement substitution with a material that has the same properties of cement. Fly ash is an alternative in reducing the use of cement. The preparation of normal concrete mixtures is used by SNI method, and for fly ash concrete mixtures, the Dreux method as a blended cement modeling concrete mixture design is used. The planned compressive strength of 40 MPa with cement substitution by fly ash is 0% to 50%, with a 5% increase. The maximum size of coarse aggregate used is 20 mm, and testing in the form of concrete compressive strength is done when the concrete reaches 7 days, 14 days, and 28 days. The results of 28 days old concrete compressive strength showed the maximum cement substitution level by fly ash using the Dreux Gorrise method with blended cement modeling only reaching 20% fly ash content.Keywords: fly ash concrete, Dreux Gorrise, compressive strength, blended cement

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