Assessment of compressive strength, durability, and erodibility of quarry dust-based geopolymer cement stabilized expansive soil

2021 ◽  
Author(s):  
Kennedy Chibuzor Onyelowe ◽  
Michael E. Onyia ◽  
Frank I. Aneke ◽  
Duc Bui-Van ◽  
Kyle M. Rollins
Keyword(s):  
Compressive Strength ◽  
Expansive Soil ◽  
Geopolymer Cement ◽  
Quarry Dust

scholarly journals Compression and Split Tensile Characteristics of Concrete Containing Quarry Residues

2019 ◽  
Vol 5 (5) ◽  
pp. 1-5
Keyword(s):  
Tensile Strength ◽  
Compressive Strength ◽  
Research Facility ◽  
River Sand ◽  
Split Tensile Strength ◽  
Fine Aggregates ◽  
Concrete Production ◽  
The World ◽  
Substitute Material ◽  
Quarry Dust

Waterway sand and pit sand are the most normally utilized fine aggregates for concrete creation in many parts of the world. Huge scale extraction of these materials presents genuine ecological risk in numerous parts of the nation. Aside from the ecological danger, there still exists the issue of intense lack in many regions. In this way, substitute material in place of river sand for concrete production should be considered. The paper means to examine the compressive and split tensile qualities of concrete produced using quarry residue, sand, and a blend of sand and quarry dust. The experimentation is absolutely research facility based. A total of 60 concrete cubes of size 150 mm x 150 mm x 150 mm, and 60 cylinders 150 mm in diameter and 300 mm deep, conforming to M50 grade were casted. All the samples were cured and tested with a steady water/concrete proportion of 0.31. Out of the 60 blocks cast, 20 each were made out of natural river sand, quarry dust and an equivalent blend of sand and quarry dust. It was discovered that the compressive strength and split tensile strength of concrete produced using the blend of quarry residue and sand was higher than the compressive qualities of concrete produced using 100% sand and 100% quarry dust.

scholarly journals Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Sheng-quan Zhou ◽  
Da-wei Zhou ◽  
Yong-fei Zhang ◽  
Wei-jian Wang ◽  
Dongwei Li
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Fly Ash ◽  
Expansive Soil ◽  
Dynamic Mechanical Properties ◽  
Test Results ◽  
Absorbed Energy ◽  
Dynamic Mechanical ◽  
Stabilized Soil ◽  
Dynamic Compressive Strength

To probe into the dynamic mechanical properties of expansive soil stabilized by fly ash and lime under impact load, the split-Hopkinson pressure bar (SHPB) test was carried out in this study. An analysis was made on the dynamic mechanical property and final fracture morphology of stabilized soil, and the failure mechanism was also explored from the perspective of energy dissipation. According to the test results, under the impact pressure of 0.2 MPa, plain soil and pure fly ash-stabilized soil exhibit strong plasticity. After the addition of lime, the stabilized soil shows obvious brittle failure. The dynamic compressive strength and absorbed energy of stabilized soil first increase and then decrease with the change of mix proportions. Both the dynamic compressive strength and the absorbed energy reach the peak value at the content of 20% fly ash and 5% lime (20% F + 5% L). In the process of the test, most of the incident energy is reflected back to the incident bar. The absorbed energy of stabilized soil increases linearly with the rise of dynamic compressive strength, while the absorbed energy is negatively correlated with the fractal dimension. The fractal dimension of pore morphology of the plain soil is lower than that of the fly ash-lime combined stabilized soil when it comes to the two different magnification ratios. The test results indicate that the modifier content of 20% F + 5% L can significantly improve the dynamic mechanical properties of the expansive soil.

scholarly journals Study on Compressive Strength of Quarry Dust as Fine Aggregate in Concrete

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
K. Shyam Prakash ◽  
Ch. Hanumantha Rao
Keyword(s):  
Compressive Strength ◽  
Environmental Pollution ◽  
Low Cost ◽  
Experimental Investigations ◽  
Fine Aggregate ◽  
Normal Concrete ◽  
Natural Sand ◽  
Alternative Material ◽  
Quarry Dust

The concept of replacement of natural fine aggregate by quarry dust which is highlighted in the study could boost the consumption of quarry dust generated from quarries. By replacement of quarry dust, the requirement of land fill area can be reduced and can also solve the problem of natural sand scarcity. The availability of sand at low cost as a fine aggregate in concrete is not suitable and that is the reason to search for an alternative material. Quarry dust satisfies the reason behind the alternative material as a substitute for sand at very low cost. It even causes burden to dump the crusher dust at one place which causes environmental pollution. From the results of experimental investigations conducted, it is concluded that the quarry dust can be used as a replacement for fine aggregate. It is found that 40% replacement of fine aggregate by quarry dust gives maximum result in strength than normal concrete and then decreases from 50%. The compressive strength is quantified for varying percentage and grades of concrete by replacement of sand with quarry dust.

Compressive Strength and Water Absorption Characteristics of Brick Using Quarry Dust

InCIEC 2014 ◽  
2015 ◽  
pp. 51-64
Author(s):  
Maureena Jurliel Abdullah ◽  
Zakiah Ahmad ◽  
Atikah Fatma Md. Daud ◽  
Nur Kamaliah Mustaffa
Keyword(s):  
Compressive Strength ◽  
Water Absorption ◽  
Quarry Dust ◽  
Absorption Characteristics

scholarly journals Experimental Investigation of NaOH and KOH Mixture in SCBA-Based Geopolymer Cement Composite

Materials ◽  
2020 ◽  
Vol 13 (15) ◽  
pp. 3437 ◽  
Author(s):  
Sardar Kashif Ur Rehman ◽  
Lahiba Imtiaz ◽  
Fahid Aslam ◽  
Muhammad Khizar Khan ◽  
Muhammad Haseeb ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Cement Paste ◽  
Cement Composite ◽  
Sem Analysis ◽  
Molar Ratio ◽  
Geopolymer Concrete ◽  
Concrete Durability ◽  
Geopolymer Cement ◽  
Ash Disposal ◽  
Durability Performance

This research aimed at exploring the effects of a mixture of sodium hydroxide (NaOH) and potassium hydroxide (KOH) activators in a sugar cane bagasse ash (SCBA)-based geopolymer cement paste. Bagasse ash replacement was 20% of cement by weight. The mixture of NaOH and KOH comprised 4, 8, and 12 M solutions with mixing percentages of 0%, 20%, 40%, 60%, 80%, and 100% for all possible combinations. A pH test was performed on each possible combination of solutions. A Chapelle’s test, XRD, X-ray fluorescence (XRF), and SEM analysis were used to check whether the SCBA exhibited pozzolanic reactivity. Subsequently, the SCBA geopolymer cement paste was tested for compressive strength, water absorption, permeable porosity, and sorptivity. It was estimated that the geopolymer cement paste exhibited higher absorption and sorptivity values than control mixtures when molarity increased. However, the samples prepared with combinations of the 8 M activator solution exhibited consistent absorption, sorptivity, and compressive strength values when compared to the control and other geopolymer mixtures with 4 and 12 M activator solutions. Thus, the two activator solutions G8N408K60 and G8N208K80—where GxNayKb represents the geopolymer concrete sample prepared by adding solutions of two bases, i.e., ‘xNayKb’ showing an ‘a’ percentage of ‘x’ molar NaOH and a ‘b’ percentage of ‘y’ molar KOH—were obtained as the optimum molar ratio of the activator in geopolymer concrete. The geopolymer cement pastes, along with the optimum and control samples, were further tested for concrete durability, SEM, and TGA tests. The G8N208K80 sample exhibited a better mechanical and durability performance than the G8N408K60 sample. The durability performance of the geopolymer concrete was also superior to ordinary concrete. Moreover, the geopolymer concrete achieved a 21% reduction in global warming potential compared to the control mixture. Thus, it can be concluded that the use of SCBA in geopolymer concrete can address the ash disposal and CO2 emission problems with enhanced durability.

Properties of steel fiber self-compacting concrete incorporating quarry dust fine powder

2020 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
Joseph Abah Apeh ◽  
Juliet Eyum Ameh
Keyword(s):  
Compressive Strength ◽  
Energy Absorption ◽  
Steel Fiber ◽  
Fine Powder ◽  
Absorption Capacity ◽  
Strength Development ◽  
Self Compacting Concrete ◽  
Energy Absorption Capacity ◽  
Hardened Properties ◽  
Quarry Dust

Self-compacting concrete (SCC) has great potentials as it offers several environmental, economic and technical benefits. Moreover, the use of fibers extends its possibilities since fibers arrest cracks and retard their propagation. Incorporation of Quarry Dust (QD) in SCC help to reduce environmental hazards during the production of QD. This study evaluated the fresh and hardened properties of steel fiber self-compacting concrete (SFSCC) incorporating QD. The optimum fiber and QD contents with no adverse effects on fresh and hardened properties were determined. A comparative study on behavior of SCC and SFSCC mixtures in terms of workability, compressive strength, compressive strength development ratio, tensile, flexural and energy absorption capacity was carried out. Test results showed that compressive strength increased with increase in QD contents at fixed fiber content by mass of Portland cement (PC) and then decreased. Strength development ratio (C28/C7) for SCC was 1.13, while it was 1.06, 1.08, 1.10 and 1.01 after reinforcing with 0.10, 0.20 and 0.30 contents of fiber. The compressive, tensile, flexural and energy absorption capacity or Toughness of SFSCC increased with the inclusion of the aforementioned contents of steel fiber up to 0.20 % volume of total binder at constant QD content and then decreased when compared with control SCC values. From these results, optimum value for the variables studied was obtained from mix QD20 + 0.2fr. Hence, steel fiber and QD could be successfully used in SCC production not minding the slight draw back on workability of SCC caused by inclusion of steel fiber, but with a modified dosage of super-plasticizer (SP), fresh and hardened properties, in accordance with specifications in relevant code(s) can be achieved.

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