scholarly journals Performance of Porous Slabs Using Recycled Ash

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3319
Author(s):  
Taha El-Sayed
Keyword(s):  
Phase I ◽  
Wheat Straw ◽  
Rice Straw ◽  
Lightweight Concrete ◽  
Spherical Shape ◽  
Element Model ◽  
Pervious Concrete ◽  
Partial Replacement ◽  
Hardened Concrete ◽  
Straw Ash

Permeable concrete is an environmentally friendly material that improves water permeability and slip resistance. The manuscript describes a new study aimed at improving the strength of permeable concrete obtained using local materials for the partial replacement of cement with rice and wheat straw ash due to the high amount of silica and pozzolanic characteristics present in the ash. For this purpose, nine concrete mixes were made (Phase I). The mixes were classified into four groups: Group A, with cement/aggregate ratios of 0.23, 0.34, and 0.44 for Mixes 1, 2, and 3, respectively; Group B, with sand added at 10% and 15% to the coarse aggregate for Mixes 4 and 5; Group C, with rice straw ash replacement ratios of 10% and 15% in the cement for Mixes 6 and 7; and, finally, Group D with wheat straw ash replacement ratios of 10% and 15% in the cement for Mixes 8 and 9. For Groups B to D, the water/binder ratio was 0.238. Fresh and hardened concrete tests were conducted. The results showed that Mixes C and D, which contained rice and wheat straw ash, increased the compaction factor due to their spherical shape and higher surface area compared with traditional pervious concrete. Additionally, permeability and porosity increased slightly for the mixes using rice and wheat straw ash. This could be attributed to increasing the interconnected voids. Optimum porosity was reached with 15% rice straw ash. The optimum mix design from Phase I was used in Phase II. Therefore, six pervious concrete slabs, reinforced with different types of reinforcement, were tested under flexural load. With the help of ANSYS, a finite element model was created to verify the results of experiments. The results of the numerical simulation are consistent with the results of the experiment. This article represents a definite step to new knowledge in the field of research of permeable concrete obtained using the partial replacement of cement with rice and wheat straw ash. Hence, this form of concrete can be used for parking lot paving, sludge beds for sewage plants, swimming pool surfaces, bridge walkways, zoo area floors, and animal barns. This concrete can also be used in applications requiring lightweight concrete.

Mechanical performance of concrete incorporating wheat straw ash as partial replacement of cement

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Naraindas Bheel ◽  
Mohd Haziman Wan Ibrahim ◽  
Adeyemi Adesina ◽  
Charles Kennedy ◽  
Irfan Ali Shar
Keyword(s):  
Wheat Straw ◽  
Mechanical Performance ◽  
Partial Replacement ◽  
Straw Ash

scholarly journals Effect of Wheat Straw Ash on Fresh and Hardened Concrete Reinforced with Jute Fiber

2021 ◽  
Vol 2021 ◽  
pp. 1-11 ◽  
Author(s):  
Naraindas Bheel ◽  
Samiullah Sohu ◽  
Paul Awoyera ◽  
Ashok Kumar ◽  
Suhail Ahmed Abbasi ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Raw Materials ◽  
Research Work ◽  
Jute Fiber ◽  
Hardened Concrete ◽  
Waste Products ◽  
Sustainable Environment ◽  
Mix Proportion ◽  
Basic Source ◽  
Straw Ash

In the present era, a number of researchers are using either industrial or agricultural priceless products as a basic source of raw materials for the construction industry. These waste products are economical and helpful in producing a sustainable environment and reducing environmental pollution, which is called handling waste products. However, this research work was conducted on concrete containing 0.25%, 0.50%, 0.75%, and 1% of jute fiber as reinforcement material and 10%, 20%, 30%, and 40% of wheat straw ash (WSA) as replacement for fine aggregates. Moreover, the separate and combined effect of jute fiber and WSA as a replacement for sand ingredient in concrete is to determine the fresh and hardened properties of concrete. In this research, a number of concrete samples were prepared with 1 : 1.5 : 3 mix proportion at 0.54 water-cement ratio and cured at 28 days. The experimental outcomes displayed that the compressive, splitting tensile, and flexural strengths improved by 32.88 MPa, 3.80 MPa, and 5.30 MPa at 0.50% of jute fiber along with 30% of WSA at 28 days consistently. Similarly, the modulus of elasticity was developed while the dosages of jute fiber and WSA increased together in concrete. Moreover, the permeability and workability of concrete were reduced while utilized jute fiber and WSA increased together in concrete.

scholarly journals Rice Straw and Eggshell Ash as Partial Replacements of Cement in Concrete

2020 ◽  
Vol 10 (6) ◽  
pp. 6481-6487
Author(s):  
C. Oliko ◽  
C. K. Kabubo ◽  
J. N. Mwero
Keyword(s):  
Compressive Strength ◽  
Rice Straw ◽  
Chemical Properties ◽  
Partial Replacement ◽  
Acid Attack ◽  
Establishment Method ◽  
Hardened Properties ◽  
Physical And Chemical ◽  
British Research ◽  
Straw Ash

This paper presents the properties of concrete made with cement partially replaced with rice straw ash and eggshell ash. The rice straws and eggshells were incinerated, sieved, and ground, and the physical and chemical properties of the resultant ash and the other materials incorporated in the concrete mixes were determined. A class 35 concrete mix with no partial replacement of cement with rice straw ash designed with the British Research Establishment method with a water/cement ratio of 0.5 was considered as the control mix. The cement in concrete was partially replaced with rice straw ash by 5% to 30% and its compressive and splitting tensile strength was determined after 7, 14, 28, 56, and 90 days of curing. Durability, resistance to acid attack, and other wet and hardened properties of concrete with cement partially replaced with rice straw ash were also determined. An increase in compressive strength above the control mix was observed for concrete with 5% and 10% partial replacement of cement with rice straw ash. When eggshell ash was added to concrete mixes made with cement partially replaced with rice straw ash at 15% and 20%, the 28, 56, and 90-day compressive strength was found to increase. It can be concluded that rice straw and eggshell ash can be used to partially replace cement in concrete and result in a concrete whose properties compare favorably with control

scholarly journals Incorporation of Wheat Straw Ash as Partial Sand Replacement for Production of Eco-Friendly Concrete

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2078
Author(s):  
Shazim Ali Memon ◽  
Usman Javed ◽  
Muhammad Haris ◽  
Rao Arsalan Khushnood ◽  
Jong Kim
Keyword(s):  
Compressive Strength ◽  
Wheat Straw ◽  
Agricultural Waste ◽  
Pulse Velocity ◽  
Hardened Concrete ◽  
Fine Aggregate ◽  
Natural Sand ◽  
Suitable Alternative ◽  
Concrete Production ◽  
Straw Ash

The depletion of natural sand resources occurs due to excessive consumption of aggregate for concrete production. Continuous extraction of sand from riverbeds permanently depletes fine aggregate resources. At the same time, a major ecological challenge is the disposal of agricultural waste ash from biomass burning. In this study, an environmental friendly solution is proposed to investigate the incorporation of wheat straw ash (WSA) by replacing 0, 5, 10, 15, and 20% of sand in concrete. Characterization results of WSA revealed that it was well-graded, free from organic impurities, and characterized by perforated and highly porous tubules attributed to its porous morphology. A decrease in fresh concrete density and an increase in slump values were attained by an increase in WSA replacement percentage. An increasing trend in compressive strength, hardened concrete density, and ultrasonic pulse velocity was observed, while a decrease was noticed in the values of water absorption with the increase in WSA replacement percentages and the curing age. The WSA incorporation at all replacement percentages yielded concrete compressive strength values over 21 MPa, which complies with the minimum strength requirement of structural concrete as specified in ACI 318-19. Acid resistance of WSA incorporated concrete improved due to the formation of pozzolanic hydrates as evident in Chappelle activity and thermogravimetric analysis (TGA) results of WSA modified composites. Thus, the incorporation of WSA provides an environmentally friendly solution for its disposal. It helps in conserving natural aggregate resources by providing a suitable alternative to fine aggregate for the construction industry.

The Influence of the Properties of the Material Used for Obtaining Geopolymers on Their Structure and Compressive Strength

2017 ◽  
Vol 68 (6) ◽  
pp. 1182-1187
Author(s):  
Ilenuta Severin ◽  
Maria Vlad
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Wheat Straw ◽  
Red Mud ◽  
Blast Furnace Slag ◽  
Complex Structure ◽  
Point Of View ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag ◽  
Straw Ash

This article presents the influence of the properties of the materials in the geopolymeric mixture, ground granulated blast furnace slag (GGBFS) + wheat straw ash (WSA) + uncalcined red mud (RMu), and ground granulated blast furnace slag + wheat straw ash + calcined red mud (RMc), over the microstructure and mechanical properties of the synthesised geopolymers. The activation solutions used were a NaOH solution with 8M concentration, and a solution realised from 50%wt NaOH and 50%wt Na2SiO3. The samples were analysed: from the microstructural point of view through SEM microscopy; the chemical composition was determined through EDX analysis; and the compressive strength tests was done for samples tested at 7 and 28 days, respectively. The SEM micrographies of the geopolymers have highlighted a complex structure and an variable compressive strength. Compressive strength varied from 24 MPa in the case of the same recipe obtained from 70% of GGBFS + 25% WSA +5% RMu, alkaline activated with NaOH 8M (7 days testing) to 85 MPa in the case of the recipe but replacing RMu with RMc with calcined red mud, alkaline activated with the 50%wt NaOH and 50%wt Na2SiO3 solution (28 days testing). This variation in the sense of the rise in compressive strength can be attributed to the difference in reactivity of the materials used in the recipes, the curing period, the geopolymers structure, and the presence of a lower or higher rate of pores, as well as the alkalinity and the nature of the activation solutions used.

Water Extract of Rice Straw Ash: Experimental Design and Evaluation of Their Activity in the Hydrothiolation Reaction

2021 ◽  
Author(s):  
Marcia Victória Silveira ◽  
Giovani Zandoná ◽  
Andrielli Leitemberger ◽  
Lucas M. C. Böhs ◽  
Toni J. Lopes ◽  
...  
Keyword(s):  
Experimental Design ◽  
Rice Straw ◽  
Water Extract ◽  
Straw Ash

scholarly journals Consistency and mechanical properties of sustainable concrete blended with brick dust waste cementitious materials

2021 ◽  
Vol 3 (4) ◽  
Author(s):  
S. Y. Amakye ◽  
S. J. Abbey ◽  
A. O. Olubanwo
Keyword(s):  
Tensile Strength ◽  
Fresh Concrete ◽  
Environmental Benefits ◽  
Partial Replacement ◽  
Target Range ◽  
Hardened Concrete ◽  
Index Test ◽  
Demolition Waste ◽  
Concrete Mix ◽  
Brick Dust

AbstractThe reuse of waste materials in civil engineering projects has become the topic for many researchers due to their economic and environmental benefits. In this study, brick dust waste (BDW) derived from cutting of masonry bricks and demolition waste which are normally dumped as land fill is used as partial replacement of cement in a concrete mix at 10%, 20% and 30% respectively, with the aim of achieving high strength in concrete using less cement due to the environmental problems associated with the cement production. To ascertain the effects of BDW on the consistency and mechanical performance of concrete mix, laboratory investigations on the workability of fresh concrete and the strength of hardened concrete were carried out. Slump and compaction index test were carried out on fresh concrete mix and unconfined compressive strength (UCS) test and tensile strength test were conducted on hardened concrete specimen after 7, 14 and 28 days of curing. The results showed high UCS and tensile strength with the addition of 10% BDW to the concrete mix, hence achieving the set target in accordance with the relevant British standards. A gradual reduction in strength was observed as BDW content increases, however, recording good workability as slump and compaction index results fell within the set target range in accordance with relevant British standards. Findings from this study concluded that BDW can partially replace cement in a concrete mix to up to 30% igniting the path to a cleaner production of novel concrete using BDW in construction work.

Review on fermentative biohydrogen production from water hyacinth, wheat straw and rice straw with focus on recent perspectives

2017 ◽  
Vol 42 (33) ◽  
pp. 20955-20969 ◽  
Author(s):  
Shahabaldin Rezania ◽  
Mohd Fadhil Md Din ◽  
Shazwin Mat Taib ◽  
Johan Sohaili ◽  
Shreeshivadasan Chelliapan ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Rice Straw ◽  
Water Hyacinth ◽  
Biohydrogen Production
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