scholarly journals Workability, strength, and microstructure of high strength sustainable concrete incorporating recycled clay brick aggregate and calcined clay

2021 ◽  
pp. 100123
Author(s):  
Oluwarotimi Olofinnade ◽  
Joshua Ogara
Keyword(s):  
High Strength ◽  
Clay Brick ◽  
Calcined Clay ◽  
Sustainable Concrete

Blended cement binders containing bamboo leaf ash and ground clay brick waste for sustainable concrete

Materialia ◽  
2021 ◽  
Vol 15 ◽  
pp. 101045 ◽  
Author(s):  
John Temitope Kolawole ◽  
Kolapo Olubunmi Olusola ◽  
Adewumi John Babafemi ◽  
Oladimeji Benedict Olalusi ◽  
Ebenezer Fanijo
Keyword(s):  
Blended Cement ◽  
Clay Brick ◽  
Sustainable Concrete ◽  
Bamboo Leaf Ash

scholarly journals Application of the C-S-H Phase Nucleating Agents to Improve the Performance of Sustainable Concrete Composites Containing Fly Ash for Use in the Precast Concrete Industry

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6514
Author(s):  
Grzegorz Ludwik Golewski ◽  
Bartosz Szostak
Keyword(s):  
Fly Ash ◽  
Industrial Waste ◽  
Precast Concrete ◽  
High Strength ◽  
Nucleating Agents ◽  
Negative Effects ◽  
Sustainable Concrete ◽  
Wide Range ◽  
Time Periods ◽  
Positive Effect

Siliceous fly ash (FA) is the main additive to currently produced concretes. The utilization of this industrial waste carries an evident pro-ecological factor. In addition, such actions have a positive effect on the structure and mechanical parameters of mature concrete. Unfortunately, the problem of using FA as a Portland cement replacement is that it significantly reduces the performance of concretes in the early stages of their curing. This limits the possibility of using this type of concrete, e.g., in prefabrication, where it is required to obtain high-strength composites after short periods of curing. In order to minimize these negative effects, this research was undertaken to increase the early strength of concretes with FA through the application of a specifically formulated chemical nano-admixture (NA) in the form of seeds of the C-S-H phase. The NA was used to accelerate the strength growth in concretes. Therefore, this paper presents results of tests of modified concretes both with the addition of FA and with innovative NA. The analyses were carried out based on the results of the macroscopic and microstructural tests in five time periods, i.e., after 4, 8, 12, 24 and 72 h. The results of tests carried out with the use of NA clearly indicate the possibility of using FA in a wide range of management areas in sustainable concrete prefabrication.

scholarly journals Some Properties of High Strength Sustainable Concrete Containing Glass Powder Waste

2018 ◽  
Vol 11 (2) ◽  
pp. 42-32
Author(s):  
Wasan I. Khalil ◽  
Nazar F. Al-Obeidy
Keyword(s):  
Modulus Of Elasticity ◽  
Electrochemical Techniques ◽  
Low Carbon Steel ◽  
High Strength ◽  
Partial Replacement ◽  
Low Carbon ◽  
Natural Pozzolan ◽  
Glass Waste ◽  
Sustainable Concrete ◽  
Glass Wastes

This investigation includes the use of glass wastes after recycling to produce high strength sustainable concrete. The glass waste used is prepared to be a natural Pozzolan class (N) according to ASTM C618 with fineness of about 7340 cm2/gm. Many concrete mixes with different percentages of glass waste powder as a partial replacement by weight of cement (10%, 15%, 20%, 25%, and 30%) were prepared to study some properties of concrete (compressive strength, splitting tensile strength, flexural strength, and modulus of elasticity at 60 day age). The test results indicate that the mechanical properties of concrete are improved with the increase of glass waste powder up to 15%, and then decreased. The maximum percentages of increase for compressive, splitting tensile, flexural strengths, and modulus of elasticity are 13.29%, 36.27%, 34.68%, and 8.2% respectively relative to the reference for concrete specimens containing 15% glass waste powder as a replacement by weight of cement.Corrosion inhibition of low carbon steel, stainless steel types 316 and 304 in hydrochloric acid by potassium iodide was investigated at different temperatures using weight loss and polarization electrochemical techniques

scholarly journals Mechanical properties of high strength eco-concrete containing crushed waste clay brick aggregates as replacement for sand

2019 ◽  
Vol 640 ◽  
pp. 012046
Author(s):  
O M Olofinnade ◽  
J I Ogara ◽  
I T Oyawoye ◽  
A N Ede ◽  
J M Ndambuki ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Strength ◽  
Clay Brick

Potential for use of crushed waste calcined-clay brick as a supplementary cementitious material in Brazil

2007 ◽  
Vol 37 (9) ◽  
pp. 1357-1365 ◽  
Author(s):  
R.D. Toledo Filho ◽  
J.P. Gonçalves ◽  
B.B. Americano ◽  
E.M.R. Fairbairn
Keyword(s):  
Cementitious Material ◽  
Clay Brick ◽  
Supplementary Cementitious Material ◽  
Calcined Clay

Characterization of eco-substituted cement containing waste ground calcined clay brick

2017 ◽  
Vol 44 (11) ◽  
pp. 956-961 ◽  
Author(s):  
Ghania Nigri ◽  
Yacine Cherait ◽  
Soraya Nigri
Keyword(s):  
Cement Hydration ◽  
Blended Cement ◽  
Pozzolanic Reaction ◽  
Partial Replacement ◽  
Optimal Composition ◽  
Clay Brick ◽  
Calcined Clay ◽  
Blended Cements ◽  
Setting Times

This paper discusses the potentialities of using waste bricks as a partial replacement of clinker in blended cement. The blended cements are produced by grinding and mixing clinker, waste brick and gypsum. Eight mixtures containing 0 to 35% of bricks as a clinker replacement are prepared and characterized. Partially replacing clinker by brick results in early strength, but are lower than that of the reference. However, at 90 days, the strengths are greater than that reference. The setting times and the shrinkages were reduced. Blended cement has been formulated with optimal composition of 10% of waste brick. The microstructure of the paste was studied using scanning electron microscopy and the evolution of cement hydration was studied by Fourier transform infrared spectroscopy. It was concluded that the binder with 10% of brick shows a dense and homogeneous particles distribution. The pozzolanic reaction occurs through the decreases of the amorphous silica during hydration.

scholarly journals Utilisation of Dune Sand and Clay Brick Waste in the Production of Sustainable Concrete

2021 ◽  
Vol 1067 (1) ◽  
pp. 012023
Author(s):  
Sajid Kamil Zemam ◽  
Musab Sabah Abed ◽  
Sa’ad Fahad Resan
Keyword(s):  
Clay Brick ◽  
Dune Sand ◽  
Sustainable Concrete
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