If beside a waterlogged block, it should be adjacent to the sides in which h2o can stream out from, including the open up sides of stairs, but not the back again side of stairs or any sides of waterlogged leaves. Renewability[]

該例句來自Hansard存檔。包含以下議會許可信息開放議會許可v3.0 Utilization of these kinds of vulgarisms as "city cramming"and"concreting over the countryside" is an element of that. 來自 Hansard archive

When combination is combined with dry Portland cement and water, the mixture types a fluid slurry that is well poured and molded into form. The cement reacts Using the h2o by way of a procedure termed concrete hydration[four] that hardens it in excess of a number of several hours to kind a hard matrix that binds the products jointly into a durable stone-like material which includes several uses.[five] This time permits concrete to not only be Forged in types, but also to obtain various tooled procedures carried out.

Universal: A ultimate Model known as the common phonogène was done in 1963. The system's most important capability was that it enabled the dissociation of pitch variation from time variation. This was the start line for procedures that may later grow to be broadly readily available using digital engineering, By way of example harmonising (transposing seem with out modifying period) and time stretching (modifying period without pitch modification).

There are actually differing types of admixtures that are utilized to deliver sure Attributes. Admixtures or additives which include pozzolans or superplasticizers are included in the mixture to improve the physical properties of the damp mix or perhaps the completed content.

It can be deposited in thick levels as a semi-dry product then roller compacted into a dense, robust mass.

It had been mainly a standard tape recorder but with the chance to Regulate its speed, so it could modify any duration of tape. Among the earliest samples of its use can by heard in Voile d'Orphée by Pierre Henry (1953), the place a prolonged glissando is used to symbolise the removing of Orpheus's veil as he enters hell.

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By applying a calculated level of stretching pressure on the steel, the level of compression transmitted to your concrete is often carefully controlled. Prestressed concrete neutralizes the stretching forces that could rupture ordinary concrete by compressing a region to The purpose at which no tension is knowledgeable until eventually the energy in the compressed area is triumph over. Mainly because it achieves strength with no working with hefty steel reinforcements, it's been accustomed to good influence to make lighter, shallower, plus more elegant buildings such as bridges and huge roofs.

Another approach to mass concrete structures that minimizes cement's thermal by-products is the usage of roller-compacted concrete, which makes use of a dry mix which has a A great deal decreased cooling necessity than standard wet placement.

In the situation of strengthened concrete, the component components are nearly always concrete and steel. Both of these elements kind a powerful bond with each other and are able to resist several different utilized forces, efficiently acting as one structural component.[116]

Plasticizers can be employed to lessen the drinking water content of the concrete when preserving workability and are occasionally identified as h2o-reducers as a result of this use. These remedy enhances its energy and sturdiness features.

The use of recycled glass in concrete happens to be additional well known lately. It's been utilised like a decorative mixture, to provide a sparkle effect in concrete countertops and flooring. It is also made use of to be a partial substitution for regular aggregates in concrete.

social act. With the Cambridge English Corpus The true explanation (rather than bare description) of gatherings rests in the powers and liabilities amarillo concrete sidewalks in the concrete