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Qaagi - Book of Why

Causes

Effects

Changes of pore water content due to drying or wetting processescausesignificant volume changes of concrete in load - free specimens

windows and roof beamssetslabs of pre stressed concrete to put in position

beamssetslabs of pre stressed concrete to put in position

Sudden Difference in the temperaturewill resultin the change of differential volume of concrete

Variation in temperature Changes in temperature ( whether too hot or coldcausesdifferential volume change in concrete

the invention of high strength steel(passive) was influenced byThe development of pre - stressed concrete

The shrinkagecausesstress to develop from the concrete

The shrinkagecausesstress to develop in the concrete

loadscausesvolume reduction of concrete specimen

The immense heatcausedextensive damage to the pre - stressed concrete

many factors(passive) is caused by Volume change in concrete

loadscausesvolume reduction of concrete specimens

magnesia expansioncausinguneven volume change of cement

by erosion beneath the concrete slabs Horizontal delaminations caused by rust expansion(passive) caused byDensity changes in concrete Voids

The difference in the rate of hydration of free lime and slaked limeleadsto change in volume of hardened concrete

by erosion beneath the concrete slabs Horizontal delaminations caused by rust expansion of rusting internal(passive) caused byDensity changes in concrete Voids

the presence of stiffening ribs ... other elementscan influencethe change of the volume of the poured concrete

e made by the heat of hydration increased 25 C during the curing periodresultingin increased concrete volume

the property of expansion and contraction ... temperature changesis resultingin a change in the volume of concrete

concrete temperature 25 resultedin increased volume of concrete

cracks in the da Concrete in the process of curing , the hydration heat of concrete temperature 25 resultedin increased volume of concrete

gel porescauseschange in the volume of concrete

by erosion beneath the concrete slabs Horizontal delaminations caused by rust expansion of rusting(passive) caused byDensity changes in concrete Voids

the temperature of concrete ... 25 degreesleadsto the increase of concrete volume

The loss of watercausesa volume change in the concrete

by corrosion(passive) caused bythe volume increase of concrete

Elevated temperaturescan causechanges in the strength of concrete

the mix water and cement grainscausea reduction in the volume of the concrete

Our staffdesignedthe widening of an existing pre - stressed concrete

Drying of concrete from water evaporationcausesa decrease in volume of the concrete

nitrogencausessubstantial volume changes

In new concrete , natural volume changes due to cement - water hydration are restrained by the pavement base and other physical features adjacent to the concretecausingstresses to develop in the concrete

by drying and chemical changes(passive) caused byThe volume decrease of concrete

drying and chemical changes(passive) caused bythe volume decrease of concrete

the side spanis composedof pre - stressed concrete beam

These articles are travelingto could causeapparent concrete changes

Lung recoil and changes in pleural pressurecausechanges in alveolar volume

the supporting systemcomposedof pre - stressed concrete slabs

Ettringitecausesincreasing in the concrete volume

changes in pricecausingchanges in volume

to increased cracking and deflection under service loadcan leadto increased cracking and deflection under service load

to crackingcan ... leadto cracking

to the cracking of the concretecan leadto the cracking of the concrete

Expansion joints and construction joints(passive) are set artificiallyExpansion joints and construction joints

crack developmentto causecrack development

roads(passive) caused byroads

crack development in CRCP in the early ageto causecrack development in CRCP in the early age

Bridges and other structures with large spans(passive) are often designedBridges and other structures with large spans

cracking(passive) caused bycracking

to cracking Lower thermal conductivitycan leadto cracking Lower thermal conductivity

crack development in CRCP in the early age , afterwards , wheel load will be the governing factor for the development and the propagation of further cracksto causecrack development in CRCP in the early age , afterwards , wheel load will be the governing factor for the development and the propagation of further cracks

it to spallcausingit to spall

cracks that lead to concrete failurescausescracks that lead to concrete failures

Shrinkage cracks(passive) are typically caused byShrinkage cracks

The main span foundation(passive) is composedThe main span foundation

damagescan causedamages

in cracking particularly during early ageresultin cracking particularly during early age

Many cracks(passive) are caused byMany cracks

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to cracksmight leadto cracks

structural crack development in plain concretealso resultsstructural crack development in plain concrete

for use in plastered situationsdesignedfor use in plastered situations

to be used in plastered situationsdesignedto be used in plastered situations

alsoresultsalso

from the hydration process and from drying of concreteresultingfrom the hydration process and from drying of concrete

to the flow of gasesleadto the flow of gases

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the strain(passive) caused bythe strain

on concrete piersseton concrete piers

hardening , and dryingsettinghardening , and drying

, hardening , and dryingsetting, hardening , and drying

from water lossresultingfrom water loss

crackingcausecracking

significant mechanical stresses in electrodecan causesignificant mechanical stresses in electrode

stresses in the electrodecan causestresses in the electrode

The Sydney Opera House(passive) was specifically ... designedThe Sydney Opera House

audiblecan causeaudible

its associated earthquakes and crustal movements(passive) caused byits associated earthquakes and crustal movements

severe durability degradation of a structure such as bond strength degradation , destruction of concrete , reduction in the cross sections of the steel rebar , etccausessevere durability degradation of a structure such as bond strength degradation , destruction of concrete , reduction in the cross sections of the steel rebar , etc

to curlingleadto curling

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