Omitting the finer fraction of normal weight aggregate to create air-filled voids using a process pioneered by Wimpey in the UK in 1924 (no-fines concrete). • Including bubbles of gas in a cement paste or mortar matrix to form a cellular structure containing approximately 30–50 per cent ...
To aid in the creation of sustainable structures, scientists have utilized waste materials found in the environment to serve as alternatives for traditional resources in the construction sector. They have undertaken extensive investigations pertaining to
(MATEST) with a loading rate of 0.0167 kN/sec. The size of the cube specimens was 50 × 50 × 50 mm3. The specimens were tested after the 28-day curing regimen. Prior to testing, the specimens were kept at ambient temperature (23 °C ± 2 °C) for 24 h. Three specimens were ...
This specific gravity was found as per BS 812-2. In accordance with BS EN 13055, the aggregate is considered of lightweight type only if it has a specific gravity of less than 2.0. Fourteen different concrete mixtures were prepared and cast in 150 mm cube molds to investigate their thermal...
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The damage of concrete structures may arise due to physical or chemical agents. Some materials are needed to repair and reinforce these structures. Cement-
Studies of hardened concrete properties, comprising bulk engineering properties (compressive cube and cylinder strength, flexural strength, modulus of elasticity, and drying shrinkage) and durability (near surface absorption and alkali silica reaction) showed similar performance for concrete produced with ...
Two control specimens were also prepared: a control specimen of concrete without reinforcement (C-REF), and fibre-reinforced concrete made with a commercial polypropylene fibre (PFRC-REF; dosage of 2 kg per m3 of concrete). The aggregates used for manufacturing the concrete mixes in the ...
where 𝛿𝑎𝑣δav is the average thickness of the interpore wall per cell; R is the average cell radius. The dependence of the gas porosity of aerated concrete on the average pore radius R and the minimum thickness of the interpore partition 𝛿minδmin per one pore, and the coordinat...
(Es), compressive strength of concrete cube at 28 days (fcu), characteristic concrete strength of 0.67fcu (fck), ultimate strength of steel (fu), yield strength of steel (fy), steel tube buckling stress (Fcr), moment of inertia for concrete tube cross-section (Ic), moment of inertia ...