广东建材
廣東建材
엄동건재
GUANGDONG CONSTRUCTION
2012年
9期
31-34
,共4页
庞二波%孙克平%张恒春%赵日煦%郭明明%杨龙
龐二波%孫剋平%張恆春%趙日煦%郭明明%楊龍
방이파%손극평%장항춘%조일후%곽명명%양룡
成熟度%大体积混凝土%力学性能预测
成熟度%大體積混凝土%力學性能預測
성숙도%대체적혼응토%역학성능예측
maturity%mass concrete%prediction of mechanical properties
大体积混凝土硬化过程产生的温升与时问对其力学性能影响较大，成熟度在预测混凝土的阶段强度中是一种有效方法。本文在应用成熟度等效龄期方法的基础上，研究了水胶比0．35的大体积混凝土在不同养护温度下的混凝土轴压强度、弹模和劈拉强度发展规律。将标养、35℃和50℃湿热养护的温度和时间换算为成熟度一致时的相互关系，建立了成熟度下的预测公式：并得出65℃湿热养护的力学性能需单独建立预测关系式的结论。
大體積混凝土硬化過程產生的溫升與時問對其力學性能影響較大，成熟度在預測混凝土的階段彊度中是一種有效方法。本文在應用成熟度等效齡期方法的基礎上，研究瞭水膠比0．35的大體積混凝土在不同養護溫度下的混凝土軸壓彊度、彈模和劈拉彊度髮展規律。將標養、35℃和50℃濕熱養護的溫度和時間換算為成熟度一緻時的相互關繫，建立瞭成熟度下的預測公式：併得齣65℃濕熱養護的力學性能需單獨建立預測關繫式的結論。
대체적혼응토경화과정산생적온승여시문대기역학성능영향교대，성숙도재예측혼응토적계단강도중시일충유효방법。본문재응용성숙도등효령기방법적기출상，연구료수효비0．35적대체적혼응토재불동양호온도하적혼응토축압강도、탄모화벽랍강도발전규률。장표양、35℃화50℃습열양호적온도화시간환산위성숙도일치시적상호관계，건립료성숙도하적예측공식：병득출65℃습열양호적역학성능수단독건립예측관계식적결론。
Temperature rise in the hardening mass concrete and time have a big effect on the mechanical properties. It is a very effective way to assess the stage strength of concrete by maturity. Maturity equivalent age was applied in this paper. Develop- ment law of concrete axial compressive strength, elastic modulus and splitting tensile strength in mass concrete, w/s 0.35, under different curing temperature, was studied. Prediction formula in the concrete curried in standard cuing ,35℃ and 50℃ hy- drothermal curing respectively was built by translating temperature and time to corre- lation at the same maturity. Prediction formula of mechanical properties should be concluded alone in the concrete curried in 65℃ hydrothermal curing.
