Precast Structures And Elements
Users of precast structures and elements benefit from the use of structural lightweight concrete threefold. The reduced weight permits the transport of more elements or bigger dimensions without exceeding the load capacity of the trucks. This reduces transport costs. On site, smaller lifting equipment is needed, which again is less expensive. And finally, the structure itself takes advantage from all the benefits listed above.
One of the main applications of high performance lightweight concrete is in the construction of precast structures including bridges, parking garages, and long span roof framing. Because, self weight of high performance light weight concrete is smaller than that of conventional concrete, greater bridge spans can be constructed, without facing transportation and erection problem which possibly occur when conventional concrete used to construct the same prestressed concrete member.
- The insulating, fire resistance and lightness of Expanded Clay Aggregate (ECA) makes it the most significant material for constructing and fabricating a wide range of precast components and elements
- This includes the sound absorbing and refractory products such as precast panels, blocks for constructions fireplaces and chimneys.
- A study was carried out in determining the shrinkage of concrete when using Expanded Clay Aggregate (ECA) and Normal Aggregate.
- The results of the study on the shrinkage for a year of high-strength Expanded Clay Aggregate (ECA) concrete exposed to a dry environment compared with that of the Normal Weight concrete have shown that the shrinkage of Normal Weight concrete with granite aggregate was higher than that of the corresponding Expanded Clay Aggregate (ECA) concretes with the same mixture proportioning in the first 6 months.
- After 12 months the shrinkage of the Expanded Clay Aggregate concretes was to an extent higher than that of the Normal Weight concrete.
Characteristics Of Expanded Clay Aggregate (ECA) In Precast Segments
- Lightweight, Insulating and Strong
- Non-combustible and fire-resistant
- Extremely durable and stable
- High drainage capacity
- Expanded Clay Aggregate (ECA) is the perfect material for sustainable construction
Use Of Expanded Clay Aggregate (ECA) In Precast Concrete Segments
- Past years, using Expanded Clay Aggregate (ECA) in a precast concrete seemed to have greatly displaced in-situ concrete and it’s now the most commonly used in construction, by providing better quality, reduced labor and faster construction.
- Expanded Clay Aggregate (ECA) precast concrete has made an incredible impact in construction works and this has been ascertain by numerous researches that have been conducted.
- This research is centered on mechanical and physical properties of light-weight structural high-strength concrete using Expanded Clay Aggregate (ECA) in precast concrete segments, i.e. partition walls and floors.
- One of the major prides of structural engineers is making use of light weight structural concrete in their constructions.
- Expanded Clay Aggregate (ECA) precast concrete reduce reinforced concrete buildings dead load, without losing the on-demand compressive strength of the material.
- Using Expanded Clay Aggregate (ECA) structural concrete results in higher safety against earthquake and other seismic hazards.
- Using Expanded Clay Aggregate (ECA) facilitates the carrying and installment of precast concrete elements.
- Expanded Clay Aggregate (ECA) precast concrete decreasing density and weight produces great changes which enhance many properties of concrete, both in placement and application.
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