Thermo-mechanical behavior of unfired bricks and fired bricks made from a mixture of clay soil and laterite

Bodian, Séckou; Faye, M.; Sene, Ndèye Awa; Sabourin, Vincent; Limam, Oualid; Thiam, Ababacar

doi:10.1016/j.jobe.2018.03.014

Cited by 25 publications

(13 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After heating at high temperatures, the clay samples have different lengths, and the decrease in the length is expressed by using linear shrinkage. Linear shrinkage is expressed as a percentage and calculated by using the following formula (Bories et al, 2014;Bodian et al, 2018):…”

Section: Linear Shrinkagementioning

confidence: 99%

See 1 more Smart Citation

Physical and Mechanical Properties of Clay After Heating in Different Oxygen Levels and Cooling With Different Methods

Dong

Sun

Zhang

2021

Preprint

View full text Add to dashboard Cite

Clay is a vital industrial raw material, and its physical and mechanical properties undergo significant changes when heated at high temperatures. A good understanding of those properties can provide details on the best use of clay, and may eventually facilitate new application areas. In this paper, the physical and mechanical properties of clay after exposure to high temperatures at two different oxygen levels and cooled in two different ways are studied. In the experiment, the clay samples are heated at high temperatures in anoxic conditions and air. The anoxic conditions are facilitated by a closed crucible. After the sample reaches the target temperature (400°C, 500°C, 600°C, 700°C, 800°C and 900°C), it is cooled to room temperature slowly in the furnace. The samples that are heated in air are either cooled in the furnace or quenched in water. Finally, the appearance of the clay samples in terms of their surface color and development of cracks, as well as their shrinkage, mass loss, hardness, strength and deformation, and the color of the core are examined and measured. The results show that the color of the surface of the clay samples heated in anoxic conditions and air significantly differs, and the color of the core is grayish black at temperatures that are below 800°C, which is possibly related to the oxidation and reduction of iron ions. Cracks in the clay samples partially offset shrinkage. The clay samples quenched in water show larger cracks and lower compressive strength. The mass of the samples does not change at temperatures that exceed 800°C. The hardness also does not change at temperatures that are higher than 700°C. In summary, temperatures between 700°C and 800°C have the most impact on clay because many of the physical properties (including their surface color and color of the core, shrinkage, mass, hardness, and strength) vary greatly at this temperature range.

show abstract

Section: Linear Shrinkagementioning

confidence: 99%

“…In this study, the mass loss of the clay samples varies, and expressed as a percentage. Therefore, the mass loss is calculated by using (Bories et al, 2014;Bodian et al, 2018):…”

Section: Mass Lossmentioning

confidence: 99%

Physical and Mechanical Properties of Clay After Heating in Different Oxygen Levels and Cooling With Different Methods

Dong

Sun

Zhang

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Thus, it is an alternative to serve the segment of the construction of residential properties, to reduce the housing shortage. Besides being a fitting product, there is no need for large sustaining pillars that indeed speed up the construction (Pires, 2004;Bodian et al, 2018, Martins et al, 2011.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Amount of Dimension Stone Waste on Water Absorption of Soil-Cement Bricks

Jesus

Teixeira

Mendonça

et al. 2022

RSD

View full text Add to dashboard Cite

This paper shows the use of dimension stone waste in the manufacture of soil-cement bricks. Initially, a sample of the soil was analyzed for mineralogical composition, particle size distribution (classifying it in the proportion of silt, sand, and clay), and physical performance by plasticity (Atterberg limits specified by standard NBR 7180). A series of soil/waste/cement mixtures were prepared with contents up to 90% wt.% of dimension stone waste. The samples were characterized as mineralogical composition, microstructure, and water absorption after 7, 14, 21, 28, and 60 days. The composition with 20% wt.% of dimension stone waste presented individual and average values of water absorption according to the conditions established by standard NBR ABNT 10834 (≤22% and ≤20% respectively) and the other samples presented similar results, indicating that the dimension stone waste could be used for production of soil-cement bricks, helping to reduce the environmental impacts of the dimension stone industry.

show abstract

“…Though recent studies have shown successful application of laterite as partial or complete replacement of river sand in bricks and solid blocks with comparable or even higher compressive strength than control [ 21 , 65 , 66 , 67 ], there is scarce application of laterite as cement replacement in literature. In addition, there is dearth of blends of laterite, calcite and calcined clay as cement replacements in sandcrete blocks.…”

Section: Introductionmentioning

confidence: 99%

Ternary and quaternary blends as partial replacement of cement to produce hollow sandcrete blocks

Sojobi

Awolusi

Aina

et al. 2021

Heliyon

View full text Add to dashboard Cite

Hollow sandcrete blocks constitute more than 90% of residential building construction in developing countries especially in West Africa. Over-reliance on dredged river sands and conventional ordinary Portland cement (OPC) contributes to environmental degradation and post-construction problems such as swelling and shrinkage-induced cracks prevalent in construction projects. The study investigates potential utilization of locally available materials such as laterite, calcite and calcined clay as ternary and quaternary blends to replace cement and quarry dust as 100% replacement of river sand with the aid of Taguchi-Response surface methodology approach. Optimum ternary blend of 24% calcined clay +1% calcite +75% OPC is recommended to achieve volume stability, higher compressive strength and higher flexural load capacity. Alternatively, ternary blends of 24% calcite +4% calcined clay +72% OPC can also be utilized. The improved mechanical properties were attributed to the Na- and Ca-rich aluminosilicates provided by the blended cements. Successful utilization of ternary and quaternary blended cements to produce stronger, durable and eco-friendly sandcrete blocks depends on utilization of high binder-to-aggregate ratio, optimal combination of the constituents, appropriate water-cement ratio and curing/production method. Partial and 100% replacement of river sand with granite dust is possible and contributes to reduction of environmental problems caused by river dredging as well as cleaner, ecofriendly construction. Ternary and quaternary blended cements is recommended to avert post-construction problems such as swelling and shrinkage-induced cracks prevalent in construction projects.

show abstract

Thermo-mechanical behavior of unfired bricks and fired bricks made from a mixture of clay soil and laterite

Cited by 25 publications

References 17 publications

Physical and Mechanical Properties of Clay After Heating in Different Oxygen Levels and Cooling With Different Methods

Physical and Mechanical Properties of Clay After Heating in Different Oxygen Levels and Cooling With Different Methods

Influence of the Amount of Dimension Stone Waste on Water Absorption of Soil-Cement Bricks

Ternary and quaternary blends as partial replacement of cement to produce hollow sandcrete blocks

Contact Info

Product

Resources

About