• 제목/요약/키워드: Curing temperature condition

검색결과 307건 처리시간 0.238초

개질유황 모르타르의 양생조건에 따른 모르타르의 강도특성 (Strength Properties of the Mortar According to the Curing Condition of the Modified Sulfur Mortar)

  • 정병열;이상수;송하영
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2013년도 춘계 학술논문 발표대회
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    • pp.332-333
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    • 2013
  • This research utilizes the modified sulfur having the low melting point which 65℃ is tries to study the strength property of the mortar according to the cure method of the modified sulfur mortar. And we try to use as basic data for investigating the curing condition of the light panel optimum utilizing the modified sulfur. We experimented by five kinds; 20℃ water curing method and 20, 40, 60, 80(℃) air dry curing method. In 3 day curing, the compressive strength was improved caused by high curing temperature. But the compressive strength was degraded caused by enhanced temperature in 7day curing and 28day curing. Therefore, the curing temperature of the modified sulfur mortar is determined that it comes 20 time case curing and the water curing is the most recommendable.

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초기양생온도에 따른 시멘트 모르터의 강도발현에 관한 기초적 연구 (A Fundamental Study on the Strength Development in Cement Mortar under Initial Curing Temperature)

  • 백민수;이영도;임남기;김성식;이종균;최문식;정상진
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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    • pp.157-165
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    • 1997
  • In this experiment, there is a purpose to analysis the relationship of feature of compressive strength after fixing of remarkable element under the condition of initial curing temperature. According to this experiment, we get to the fallow result. In case of highest curing temperature, 3-day-strength become high but last revelation of strength become low among the condition of initial curing temperature, the highest curing temperature have an effect on revelation of strength by the application of cumulative temperature, we can get the shape of revelation of strength.

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초기재령하의 양생조건이 매스콘크리트 온도관리에 미치는 영향 연구 (An Experimental Study on the Effect of the Early Age Curing Condition on Mass Concrete)

  • 김광돈;김춘호;이충용;황민규
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2006년도 추계 학술발표회 논문집
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    • pp.685-688
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    • 2006
  • As the concrete structure being large-sized and/or high-strengthened, the control of the hydration and curing temperature is made much account. This study, analysing the concrete temperature history from cylindric specimen and mock-up structures, investigates the effect of the early age curing condition and the optimum method of curing temperature control on mass concrete.

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양생조건에 따른 경량기포콘크리트의 특성 (Properties of Light Weight Foamed Concrete According to Curing Condition)

  • 신상철;최지호;홍성록;김지호;정지용;김진만
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2011년도 추계 학술논문 발표대회
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    • pp.237-239
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    • 2011
  • This study was performed to investigate the influence of curing temperature on the properties of light weight foamed concrete, manufactured on-site construction according to the various experimental factor such as temperature of material, curing temperature in air(5, 10, 20℃), curing time in air(5, 10, 15hour), and target density of hardened state(0.8, 1.2t/㎥). As a result, the influence of the curing temperature on various properties of foamed concrete is greater than curing time. When increasing temperature and time in air curing, progress of hydration is fast and compressive strength is increasing more and more. However, when considering the productivity, minimum curing time is required 15hours at 5℃, 10hours at 10℃, and 5hours at 20℃. If this condition is not required, there is some crack due to volume expansion on the surface of light weight foamed concrete.

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내한촉진제의 종류 및 혼입양 변화에 따른 모르터의 강도특성에 관한 연구 (A Study on the Strength Properties of Mortar Under Various Types and Contents of Accelerators for Freezing Resistance)

  • 이상수;원철;박상준;김동석
    • 한국건축시공학회지
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    • 제2권2호
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    • pp.151-156
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    • 2002
  • When fresh concrete is exposed to low temperature, the concrete may suffer frost damage due to freezing at early ages and strength development may be delayed. One of the solution methods for resolve these problems is to reduce freezing temperature of concrete by the use of chemical admixture called Accelerators for freezing resistance. In this study, we investigate the effect on strength development of cement mortar using accelerators for freezing resistance with the variance curing condition. As the result of this study, the mortar using accelerators for freezing resistance show that continuously strength development in curing condition of -5$^{\circ}C$. And compressive strength under the variance temperature condition was higher than constant temperature condition in same maturity.

현장 표준양생 공시체 관리함의 개발에 관한 연구 (A Study on Development of Curing Apparatus for In-place Standard Curing Specimen)

  • 김경민;전충근;손성운;김기철;한천구
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2004년도 학술.기술논문발표회
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    • pp.97-100
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    • 2004
  • In-place curing box for specimens is used to cure the compressive strength specimens for control in place concrete. The box if composed of insulating chamber maintaining 20$\pm$3$^{\circ}C$ of temperature, in this paper, strength and temperature history of specimens cured at in plate curing box are investigated to verify field applicability. According to test results, air temperature at measured time shows large temperature variation and below zero, whereas, inside temperature of in place curing box maintains within 20$\pm$3$^{\circ}C$ due to temperature control function. For curing condition. temperature of specimens cured at outside shows large temperature deviation. specimens lured at in-place curing box is not affected by outer temperature.

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PV모듈용 EVA Sheet의 Curing조건에 따른 Gel Content 특성 (The Effect of EVA Sheet Gel Content Depending on Curing Condition for Photovoltaic Module)

  • 강기환;김경수;박경은;김현일;유권종
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 B
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    • pp.1155-1156
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    • 2006
  • In this paper, we analyzed the effect of EVA Sheet Gel Content depending on curing condition for photovoltaic module. Gel Content was measured by manufacturing Glass/EVA Sheet/Back Sheet scheme at several curing temperature and curing time. And the surface analysis of EVA Sheet depending on process condition could be observed using SEM(Scanning Electron Microscope). Through this experiment, we could confirm that there are differences on Gel Content of EVA Sheet and surface configuration depending on curing temperature and curing time. To find out the optical characteristic dependency on curing condition, Class/EVA Sheet/Glass scheme was fabricated. The optical transmittance of EVA Sheet at visible wavelength was enhanced 5% when compared to Glass/Glass scheme. And the transmittance of $130^{\circ}C$/4min, $110^{\circ}C$/4min, $160^{\circ}C$/6min process condition was higher at ultraviolet wavelength range. These curing conditions could be regarded as the best process for suppression the discoloration speed of EVA Sheet under UV light.

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양생조건이 콘크리트의 종파속도와 압축강도의 상관관계에 미치는 영향 (Effects of Curing Condition on the Relationship Between Longitudinal Wave Velocity and Compressive Strength Concrete)

  • 이희근;황수덕;이광명
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2000년도 봄 학술발표회 논문집
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    • pp.103-106
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    • 2000
  • Nondestructive tests are useful method in rapidly evaluating the condition of existing concrete structures. An objective of this work is to investigate the factors influencing the longitudinal wave velocity-strength relationship, such as w/c ratio, curing temperature, curing condition. Test results show that a change in the w/c ratio ranging from 0.46 to 0.88 and in the curing temperature from 1$0^{\circ}C$ to 3$0^{\circ}C$ did not alter the velocity-strength relationship. however, curing methods had significant effects on the velocity-strength relationship. Therefore, the estimation of compressive strength until 28 day can be accomplished by only a nonlinear equation with consideration of curing condition.

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초기 고온이력이 시멘트 모르터의 강도발현에 미치는 영향에 관한 연구 (An Experimental Study on the Characteristics of Compressive Strength in Cement Mortar under High Temperature conditions in an Early Age)

  • 김영주;최맹기;공민호;박희곤;김광기;정상진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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    • pp.45-48
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    • 2005
  • This study is basic experiment for estimating influence of strength by curing temperature of concrete's heat of hydration and estimate relationship of compressive strength development by initial curing temperature factor, and then asume temperature factor which influence compressive strength development and for showing basic document of qualify control. According to the result of cement mortar by the curing temperature factor high-curing temperature shows high strength on 3 day compare with low curing-temperature, shows higher strength than the piece of high curing temperature.

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양생온도 변화가 고성능 콘크리트의 압축강도에 미치는 영향에 관한 연구 (A Study on the Effects of Curing Temperature for Compressive Strength of High Performance Concrete)

  • 노인철
    • 한국건축시공학회지
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    • 제2권4호
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    • pp.163-168
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    • 2002
  • The object of this study is to define the characteristics of high performance concrete with varing compressive strength of concrete and curing temperature. The major test variables are 1) high strength concrete(500kg/$cm^2$) and ordinary strength concrete(240kg/$cm^2$) compressive strength, 2) curing temperature and condition, 3) concrete curing age, 4) three types of cement. From the test results were shown that curing temperature and curing conditions were also very effective for high strength concrete and ordinary strength concrete, and concrete were largely effected by cement type and temperature during the hydration reaction process. This paper describes the effect of curing temperature for strength and characteristics of high performance concrete.