长沙理工大学学报(自然科学版)
長沙理工大學學報(自然科學版)
장사리공대학학보(자연과학판)
Journal of Changsha University of Science and Technology(Natural Science)
2014年
2期
98-102
,共5页
李勇%徐协文%杨现锋%曾维萱
李勇%徐協文%楊現鋒%曾維萱
리용%서협문%양현봉%증유훤
抗压强度%养护温度%碳纤维%水泥水化
抗壓彊度%養護溫度%碳纖維%水泥水化
항압강도%양호온도%탄섬유%수니수화
compressive strength%curing temperature%carbon fiber%cement hydration
为了研究温度对含碳纤维水泥水化及其强度的影响,首先将制备好的含碳纤维水泥净浆倒入40 mm×40 mm×40 mm立方体模具中,振密实后分别放入低温(10℃),常温(25℃),高温(100℃)环境下养护至规定龄期(3,7,28 d),通过 XRD和 SEM研究水泥水化过程,对比分析在不同养护温度条件下含碳纤维混凝土的抗压强度。研究结果表明,随着养护温度的增加,C-S-H 凝胶和 C-H 的形成速率增加,从而提高了混凝土的抗压强度;在一定温度范围内提高养护温度,可加速含碳纤维混凝土水化过程。
為瞭研究溫度對含碳纖維水泥水化及其彊度的影響,首先將製備好的含碳纖維水泥淨漿倒入40 mm×40 mm×40 mm立方體模具中,振密實後分彆放入低溫(10℃),常溫(25℃),高溫(100℃)環境下養護至規定齡期(3,7,28 d),通過 XRD和 SEM研究水泥水化過程,對比分析在不同養護溫度條件下含碳纖維混凝土的抗壓彊度。研究結果錶明,隨著養護溫度的增加,C-S-H 凝膠和 C-H 的形成速率增加,從而提高瞭混凝土的抗壓彊度;在一定溫度範圍內提高養護溫度,可加速含碳纖維混凝土水化過程。
위료연구온도대함탄섬유수니수화급기강도적영향,수선장제비호적함탄섬유수니정장도입40 mm×40 mm×40 mm립방체모구중,진밀실후분별방입저온(10℃),상온(25℃),고온(100℃)배경하양호지규정령기(3,7,28 d),통과 XRD화 SEM연구수니수화과정,대비분석재불동양호온도조건하함탄섬유혼응토적항압강도。연구결과표명,수착양호온도적증가,C-S-H 응효화 C-H 적형성속솔증가,종이제고료혼응토적항압강도;재일정온도범위내제고양호온도,가가속함탄섬유혼응토수화과정。
Cement containing carbon fiber can be widely applied in structures such as road, dock and airport surfaces.To explore the influence of temperature on the hydration process and compressive strength of that cement,comparative analysis was carried out through XRD diffraction analysis,combined with SEM observation and the determination of com-pressive strength.At curing temperature for 10 ℃,25 ℃ and 100 ℃ respectively,specimen was prepared with a dimension of 40×40×40 mm prior to curing for a definite time (i.e.3, 7 and 28 days).Experimental results show that increase of curing temperature,can promote the formation of C-S-H gel and C-H in carbon fiber reinforced cement,thus improve the compressive strength.Appropriately increasing hydration temperature of carbon fiber reinforced cement could accelerate the hydration processes of that cement.