Influence of waste clay bricks as fine aggregate on the mechanical and microstructural properties of concrete

Dang, Juntao; Zhao, Jun

doi:10.1016/j.conbuildmat.2019.116757

Cited by 74 publications

(35 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was concluded that clay brick powders in the mix provide additional pozzolanic activity, increasing the strength. A similar trend of higher strength than the control at lower brick powder content (5–20%) was also reported [ 15 , 16 ]. At a higher replacement level, brick powder adversely affects mechanical strength.…”

Section: Introductionsupporting

confidence: 84%

See 1 more Smart Citation

Strength Properties of Sustainable Mortar Containing Waste Steel Slag and Waste Clay Brick: Effect of Temperature

et al. 2021

View full text Add to dashboard Cite

The use of waste streams for the production of sustainable cement-based materials cannot be overemphasized. This study investigates the feasibility of reusing waste steel slag (WSS) and waste clay brick (WCB) as a replacement for natural sand (NS) in mortar. Numerous studies have reported mainly the compressive strength of concrete/mortar, while limited research is available that focuses on the tensile and flexural strength of mortar, and especially the performance at elevated temperature. Hence, this study investigates the tensile and flexural strength of mortar with three different replacement percentages (0, 50 and 100% by volume of NS) of NS by WSS and WCB at normal temperature (without thermal treatment) and after exposure to elevated temperatures (250, 400 and 600 °C). At ambient condition, both tensile and flexural strength were enhanced as the WSS content increased (76 and 68%, respectively, at 100% WSS). In comparison, the strength increased at 50% WCB (25 and 37%, accordingly) and decreased at 100% WCB (23 and 20%, respectively) compared to 100% NS. At elevated temperatures, both the tensile and flexural strength of mortar mixes decreased significantly at 600 °C.

show abstract

Section: Introductionsupporting

confidence: 84%

“…At a higher replacement level, brick powder adversely affects mechanical strength. Generally, brick aggregates are porous, and at a higher replacement level, the total pore volume and porosity of the sample increase, thus degrading the strength [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Strength Properties of Sustainable Mortar Containing Waste Steel Slag and Waste Clay Brick: Effect of Temperature

et al. 2021

View full text Add to dashboard Cite

show abstract

“…There were also small channels of about 1-2 µm at the aggregate/cement matrix interface for the BSR50 concrete, which were less commonly observed on the BSR0 concrete. This difference may be due to the removal of paste during the preliminary processing of the sample or due to slightly dislodged sand grains during the polishing step [27]. This is an area with progressive change in the microstructure [23].…”

Section: Pore Structure and Microcrackingmentioning

confidence: 99%

Microstructure and Mechanical Behavior of Concrete Based on Crushed Sand Combined with Alluvial Sand

et al. 2020

View full text Add to dashboard Cite

The aim of this work is to reduce the overexploitation of river sand by proposing a combination of crushed sand and river sand to develop an optimal mix design for concrete. The approach used consisted of a physical, chemical, and mineralogical characterization of aggregates from three quarries located in Yaoundé (Cameroon), followed by the formulation of concrete by substituting 100%, 90%, 80%, 70%, 50%, and 0% of the river sand with crushed sand. A physical and mechanical characterization of the concrete was carried out, as well as a microstructural characterization using SEM/EDS. The results showed that the concrete made of crushed sand only had a higher drying shrinkage at a young age compared to the river sand concrete. Compared to conventional concrete (made using 100% of river sand), the concrete with 50% crushed sand reduces its slump value, has a lower porosity, and has a compressive strength value of 26.3 MPa at 28 days, which is very similar to that of conventional concrete (26.7 MPa). Moreover, it was found that the strength of the concrete increased by 14.4% and 20.6%, respectively, for concrete without crushed sand (BSR0) and concrete with 50% crushed sand (BSR50) by increasing the curing age from 28 to 90 days. The static modulus of elasticity for conventional concrete BSR0 and BSR50 concrete with 50% crushed sand at 90 days was 23.7 and 21.8 GPa, respectively. Thus, combining crushed sand with alluvial sand is a good method to reduce the depletion of alluvial sands in Cameroon.

show abstract

“…These impacts also promote sustainable construction towards waste manipulation. To reduce the consumption of the natural construction material and increase the exploitations of waste by-products, the natural aggregate and the cement can be efficiently replaced by the waste by-products such as copper slag (Siddique et al, 2020), granulated blast-furnace slag (Maghool et al, 2020), brick waste (Dang & Zhao, 2019), and fly ash (Chindaprasirt et al, 2020;Klimek et al, 2020;Shakir et al, 2020;Siddique et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Sustainable mortar and concrete made from palm oil boiler clinker aggregate comprising rice husk ash and calcium bentonite: Compressive strength and durability assessment

Kueaket¹,

Tonnayopas²

2021

j.appsci

View full text Add to dashboard Cite

This research was conducted to assess the performances of mortars and concretes made from palm oil boiler clinker aggregate (POBC) blending with rice husk ash (RHA) and calcium bentonite (CB). These blends were used to substitute of ordinary Portland cement (OPC) in the combined proportions of 5wt%CB+5wt%RHA, 5wt%CB+15wt%RHA, 15wt%CB+5wt%RHA, 10wt%CB+20wt%RHA, and 20wt%B+10wt%RHA. The POBC mortars were examined for compressive strength, water absorption, sulfuric acid resistance, and microstructural characterization at the age of 7, 28, and 56 days. Subsequently, the POBC concretes were tested for rapid chloride ion permeability and capillary absorption at 28 and 56 days of curing ages. As a result, the 56-day POBC mortar with the optimum blending of 5% CB and 15% RHA provided the greatest compressive strength of 48 MPa as well as revealed denser microstructure observed under scanning electron microscope (SEM) and greater durability against sulfuric acid attack which surpassed those of the POBC mortar without CB and RHA. Proportionately, the incorporation of 5-10% CB with 15-20% RHA to POBC concrete cured up to 56 days possessed greater durability performances by reducing the chloride ion permeability from moderate to very low ranges as well as lessening capillary absorption. The practical implications of this study are that the POBC could be potentially used in the building sector as a substitute to the conventional aggregates. In addition, the use of CB and RHA could be possibly replaced cement in the optimum proportions without compromising the strength and durability to produce efficiently sustainable POBC mortar and concrete.

show abstract

Influence of waste clay bricks as fine aggregate on the mechanical and microstructural properties of concrete

Cited by 74 publications

References 30 publications

Strength Properties of Sustainable Mortar Containing Waste Steel Slag and Waste Clay Brick: Effect of Temperature

Strength Properties of Sustainable Mortar Containing Waste Steel Slag and Waste Clay Brick: Effect of Temperature

Microstructure and Mechanical Behavior of Concrete Based on Crushed Sand Combined with Alluvial Sand

Sustainable mortar and concrete made from palm oil boiler clinker aggregate comprising rice husk ash and calcium bentonite: Compressive strength and durability assessment

Contact Info

Product

Resources

About