Compressive strength, water absorption, sorptivity, abrasion resistance and permeability of self-compacting concrete containing coal bottom ash

Bottom ash is a solid residue produced through combustion process in a coal-fired power plant. It has been catogarized as a waste and usually disposed in the utility disposed site. With higher demand on the power energy, more coal-power plant are constructed and abundance of bottom ash are produced. Recently, the utilization of bottom ash in the construction industry has gained the interest of researches. Since it has similiar particle size distribution as normal sand, many attempt has been made in studying it potential use in mortar and concrete. In complementary to that, this paper presents the effect of bottom ash on fresh and hardened properties of self-compacting concrete (SCC). Bottom ash is used as fine aggregate replacing sand with replacement ratio range from 0% to 30% by volume. The effects of bottom ash on the SCC were investigated by comparing the test result of SCC mixed bottom ash with control specimens (0% of bottom ash). The test result on fresh properties of the concrete mixture revealed that, as the replacement level of bottom ash increased, the slump flow, L-box passing ratio and segregation resistance ratio (SR) decreased. Nevertheless, the slump flow time (T500) result increased with the increased of bottom ash content. The results show that the porosity and the irregular shape of the bottom ash particle has great influence on workability and viscosity of the fresh concete. The compressive strength and water absorption test are carried out on the sample at curing time of 7 and 28days. In terms of strength, the use of bottom ash in the production of SCC has increased the compressive strength of the concrete up to 15% replacement level. The increase in strength show the presence of the pozzolanic reactivity in a concrete with bottom ash particle. The water absorption rate was observed to be lower with a sample which having 10% and 15% replacement level.

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Mechanical Properties of Concrete Block Reinforced with Recycle HDPE and Coal Bottom Ash

Materials Science Forum ◽

10.4028/www.scientific.net/msf.961.51 ◽

2019 ◽

Vol 961 ◽

pp. 51-56 ◽

Cited By ~ 1

Author(s):

Agus Dwi Anggono ◽

Zaennal Muttaqiem ◽

Agung Setyo Darmawan ◽

Tri Widodo Besar Riyadi ◽

Agus Yulianto ◽

...

Keyword(s):

Compressive Strength ◽

Water Absorption ◽

Volume Fraction ◽

Bottom Ash ◽

Concrete Block ◽

National Standard ◽

Coal Bottom Ash ◽

Plastic Metal ◽

Water Absorption Test ◽

Inorganic Waste

Garbage is a serious problem if it is not managed properly, both organic and non-organic. Inorganic waste, for example, plastic, metal, glass, and charcoal from coal combustion are difficult to decompose in the soil. HDPE (high-density polyethylene) plastic is one type of inorganic waste that is difficult to decompose, but this plastic can be recycled. The objective of the study is to develop light cement blocks by using the waste of HDPE, coal bottom ash and cement. The research guide was referred to SNI (Indonesian National Standard). The SNI-03-6825-2002 is for testing of the compressive strength and SNI 03-0349-1989 for the testing of the water absorption. The size of the specimen was 5 x 5 x 5 cm. In this study, the compositions of HDPE: coal bottom ash were varied by 70%: 0%, 60%: 10%, 50%: 20%, and 40%: 30%. The Holcim cement was 30% of the volume fraction. Testing was conducted after the specimens stay in 7 and 28 days. For the 7 days old of specimens, the highest compressive strength has resulted from 50%:20% composition with the value of 5.88 N/mm2. For the 28 days old specimens, the highest compressive strength was 8.34 N/mm2. The lowest water absorption test was delivered by the more coal bottom ash in the composition of 40%:30%. It was 16.971%. The more coal bottom ash, the less water absorption. The mean of specimens density was 1.076 gr/cm3. The result of the research shows that recycles HDPE and coal bottom ash as concrete block meet the required strength.

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Carbonation and strength of self-compacting concrete with coal bottom ash exposed to seawater by wetting-drying cycle

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/476/1/012032 ◽

2020 ◽

Vol 476 ◽

pp. 012032

Author(s):

A F Hamzah ◽

M H Wan Ibrahim ◽

E A Manan

Keyword(s):

Bottom Ash ◽

Self Compacting Concrete ◽

Coal Bottom Ash

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Fresh Properties of Self-Compacting Concrete Integrating Coal Bottom Ash as a Replacement of Fine Aggregates

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1125.370 ◽

2015 ◽

Vol 1125 ◽

pp. 370-376

Author(s):

Ahmad Farhan Hamzah ◽

Mohd Haziman Wan Ibrahim ◽

Norwati Jamaluddin ◽

Ramadhansyah Putra Jaya ◽

Norul Ernida Zainal Abidin

Keyword(s):

Bottom Ash ◽

Resistance Index ◽

Ash Content ◽

Fresh Properties ◽

Self Compacting Concrete ◽

Segregation Index ◽

Coal Bottom Ash ◽

Slump Flow ◽

Fine Aggregates ◽

The Stability

The influence of coal bottom ash on fresh properties of self-compacting concrete (SCC) were presented in this paper. Self-compacting concrete mixtures were produced by 0.40 water/powder ratio and coal bottom ash as a replacement of fine aggregates in varying percentages of 0%, 10%, 15%, 20%, 25% and 30%. The fresh concretes were tested for the key workability belongings of self-compacting concrete such as passing and filling abilities and segregation resistance. The fresh properties were investigated by slump flow; T500 spread time, sieve segregation and L-box test. It was found that the slump flow decreased whereas the T500 spread time increased with higher coal bottom ash content. The L-box blocking ratios changed from 0.92 to 0.65 and were mostly showed satisfactory blocking ratio. The presence of coal bottom ash improved the stability of SCC mixture and the segregation index obtained from sieve test reduced with greater bottom ash content. It can be concluding that the filling and passing ability of SCC decreased when the amount of coal bottom ash content increased. In addition, the segregation resistance index decreased with higher coal bottom ash content.

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Characteristics of Eco-Friendly Metakaolin Based Geopolymer Concrete Pavement Bricks

Engineering and Technology Journal ◽

10.30684/etj.v38i11a.1699 ◽

2020 ◽

Vol 38 (11A) ◽

pp. 1706-1716

Author(s):

Wasan I. Khalil ◽

Qias J. Frayyeh ◽

Mahmood F. Ahmed

Keyword(s):

Compressive Strength ◽

Water Absorption ◽

Abrasion Resistance ◽

Coarse Aggregate ◽

Partial Replacement ◽

Geopolymer Concrete ◽

Clay Brick ◽

Waste Plastic ◽

Wide Range ◽

Geopolymer Binder

The purpose of this work is to investigate the possibility to recycled and reused of waste clay brick and waste plastic as constituents in the production of green Geopolymer concrete paving bricks. Powder of clay brick waste (WBP) was used as a partial replacement of Metakaolin (MK) in Geopolymer binder. Moreover, recycled clay brick waste aggregate (BA) and plastic waste aggregate (PL) were incorporated as coarse aggregate in mixtures of Metakaolin based Geopolymer concrete (MK-GPC) pavement bricks. Six types of mixtures were prepared and cast as pavement bricks with dimensions of 150×150×100 mm. All samples have been tested for compressive strength, water absorption and abrasion resistance at age of 28 days; and compared the results with the requirements of Iraqi specification No.1606-2006. The MK-GPC pavement bricks present a compressive strength of 31-47MPa, water absorption of 3.66% to5.32% and abrasion resistance with groove length between 21.78mm to 18.91 mm. These types of pavement bricks are classified as a medium to light capacity for weight loading, and it is possible to be used in wide range of paving applications, especially in aggressive wearing environment.

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Recycling of waste incineration bottom ash in the production of interlocking concrete bricks

Journal of Science and Technology in Civil Engineering (STCE) - NUCE ◽

10.31814/stce.nuce2021-15(2)-09 ◽

2021 ◽

Vol 15 (2) ◽

pp. 101-112

Author(s):

Nguyen Huu May ◽

Huynh Trong Phuoc ◽

Le Thanh Phieu ◽

Ngo Van Anh ◽

Chau Minh Khai ◽

...

Keyword(s):

Compressive Strength ◽

Water Absorption ◽

Bending Strength ◽

Bottom Ash ◽

Waste Incineration ◽

Engineering Properties ◽

Fine Aggregate ◽

Test Results ◽

Toxic Material ◽

Visible Defect

This study presents an experimental investigation on the recycling of waste incineration bottom ash (IBA) as a fine aggregate in the production of interlocking concrete bricks (ICB). Before being used, the concentration of heavy metal in IBA was determined to confirm it is a non-toxic material. In this study, the IBA was used to replace crushed sand (CSA) in the brick mixtures at different replacement levels of 0%, 25%, 50%, 75%, and 100% (by volume). The ICB samples were checked for dimensions, visible defects, compressive strength, bending strength, water absorption, and surface abrasion in accordance with the related Vietnamese standards. The test results demonstrated that the IBA used in this study was a non-toxic material, which can be widely used for construction activities. All of the ICB samples prepared for this study exhibited a nice shape with consistent dimensions and without any visible defects. The incorporation of IBA in the brick mixtures affected engineering properties of the ICB samples such as a reduction in the compressive strength and bending strength and an increment in water absorption and surface abrasion of the brick samples. As a result, the compressive strength, bending strength, water absorption, and surface abrasion values of ICB samples at 28 days were in the ranges of 20.6 – 34.9 MPa, 3.95 – 6.62 MPa, 3.8 – 7.2%, and 0.132 – 0.187 g/cm2, respectively. Therefore, either partial or full replacement of CSA by IBA, the ICB with grades of M200 – M300 could be produced with satisfying the TCVN 6476:1999 standard in terms of dimensions, visible defects, compressive strength, water absorption, and surface abrasion. These results demonstrated the high applicability of the local IBA in the production of the ICB for various construction application purposes. Keywords: interlocking concrete brick; waste incineration bottom ash; visible defect; compressive strength; bending strength; water absorption; surface abrasion.

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