The use of waste glass as fine aggregate in concrete offers a sustainable solution for reducing the environmental burden associated with glass disposal. However, incorporating waste glass as fine aggregate poses risks of expansion and strength reduction caused by alkali-silica reaction and the weak ...
Concrete recyclingAlkali activationFly ashSlagConstruction and demolition waste recycling for production of new concrete is usually limited to the use of coarse aggregates, and efficient utilization of fine subsieve fractions remains an unresolved issue. In the presented research, Portland cement pastes ...
The trapping and burial efficiencies of the saltmarsh and mudflat monoliths were deduced from video recordings and syringe core analysis. Bakelite particles were observed to be incorporated within algal biofilms and debris forming aggregates on the mudflat. Subsequent erosion, disintegration and resuspens...
Identifying the Alkali Reactivity of Concrete Aggregates--Tests on Autoclaved Concrete Samples Concrete prisms were made with crushed aggregate, non-reactive sand, portland cement with added alkali content, and water in proportion of 1:1:1:0.5. The p... SK Roy,PK Beng,D Northwood - High-perf...
The transition zone which is formed at the interface between cement paste and aggregate affects decisively the properties of hardened concrete. The transition zone in ordinary concrete consists mainly of a highly porous three dimensional network structure of calcium hydroxide crystals with pores from 50...
The heat resistance of traditional concrete is significantly influenced by the type of aggregate and binder used in its mix design. This is because of the heat and duration of the fire, the extent of the structural component, and the moisture content of traditional concrete [4, 8,9,10]. ...
In the construction of asphalt concrete pavement, asphalt concrete mixing equipment plays a key role. Its performance and working conditions directly affects the quality of asphalt mixtures. Asphalt mixture quality around this article guarantees this objective through on aggregate and heat on temper ...
This study aims to introduce new information on freezing and thawing resistance when air-entrained or non-air-entrained concrete is used as recycled coarse aggregate into air-entrained concrete. The laboratory produced air-entrained and non-air-entrained concretes with a water/cement (w/c) ratio ...
(Wang et al.2020f; Zhong et al.2020). Secondly, biochar sorbs soil organic matter directly and form aggregates, thus preventing organic matter from being used by microorganisms (Weng et al.2018; Zheng et al.2021). Besides, gaseous CO2within soil pores can be directly sorbed by biochar (...
In BioAggregate (Verio Dental, Vancouver, Canada), SO is included to convert the CH to CSH in the longer term to strengthen the material, as initially exploited in the concrete industry11,14. A recently introduced pulp capping agent, Bio-C Pulpo (Angelus, Londrina, Brazil) is also reported...