Catalytic ozonation for water and wastewater treatment: Recent advances and perspective.

Cracks in cement concrete composites, whether autogenous or loading-initiated, are almost inevitable and often difficult to detect and repair, posing a threat to safety and durability of concrete infrastructures, especially for those with strict sealing requirements. The sustainable development of infrastructures calls for the birth of self-healing concrete composites, which has the built-in ability to autonomously repair narrow cracks. This paper reviews the fabrication, characterization, mechanisms and performances of autogenous and autonomous healing concretes. Autogenous healing materials such as mineral admixtures, fibers, nanofillers and curing agents, as well as autonomous healing methods such as electrodeposition, shape memory alloys, capsules, vascular and microbial technologies, have been proven to be effective to partially or even fully repair small cracks. As a result, the mechanical properties and durability of concrete infrastructure can be restored to some extent. However, autonomous healing techniques have shown a better performance in healing cracks than most of autogenous healing methods that are limited to healing of cracks having a width narrower than 150 μm. Self-healing concrete with biomimetic features, such as self-healing concrete based on shape memory alloys, capsules, vascular networks or bacteria, is a frontier subject in the field of material science. Self-healing technology provides concrete infrastructures with the ability to adapt and respond to the environment, exhibiting a great potential to facilitate the creation of a wide variety of resilient materials and infrastructures.

Self-healing cement concrete composites for resilient infrastructures: A review

Recycling of raw rice husk to manufacture magnesium oxysulfate cement based lightweight building materials

Carbon black reborn: Structure and chemistry for renewable energy harnessing

Reactivity activation of waste coal gangue and its impact on the properties of cement-based materials - A review

Fabrication and characterization of self-ignition coal gangue autoclaved aerated concrete

In the materials level, a review for damping capacity of cement-matrix composites modified by various additives is presented in order to summarize the knowledge development in this field. With the aid of stiffness mismatch between the phase interface and the viscoelasticity supplied by the appropriate polymer particle or latex in the cement-matrix composites, the damping capacity can be increased with slightly decrease of the stiffness and strength. Friction as the cracks in the matrix slides over the fiber at high shear stress is found to be the main damping mechanism in the fiber reinforced concrete. Filler effect should be taken care with the particle size and volume fraction of the inorganic powders modified cement matrix composites. The multiple phase boundaries and multiple interfaces between nanotubes and cement-matrix exhibit higher possibility of the interfacial slippage that can cause higher energy dissipation. Although not widely exploited yet, both network graphite and low stiffness aggregates show the potential to be tailored for damping enhancement purpose by interfacial engineering.

Damping additives used in cement-matrix composites: A review

Development of mathematical models for predicting the compressive strength and hydration process using the EIS impedance of cementitious materials

Viscoelastic behavior of carbon black and its relationship with the aggregate size

An amidoxime-functionalized polypropylene fiber: Competitive removal of Cu(II), Pb(II) and Zn(II) from wastewater and subsequent sequestration in cement mortar

Shuang Lu

Papers

Fabrication and characterization of self-ignition coal gangue autoclaved aerated concrete

Damping additives used in cement-matrix composites: A review

Development of mathematical models for predicting the compressive strength and hydration process using the EIS impedance of cementitious materials

Viscoelastic behavior of carbon black and its relationship with the aggregate size

An amidoxime-functionalized polypropylene fiber: Competitive removal of Cu(II), Pb(II) and Zn(II) from wastewater and subsequent sequestration in cement mortar