A Study on High-Strength Lightweight Concrete for High-Rise Reinforced Buildings

近年来，设计强度在360~420kgf/cm~2、层数在30~40层之间的超高层钢筋框架式住宅在日本已成为主流建筑。为此，本文对高强混凝土的各种水泥(普通硅酸盐水泥、粉煤灰水泥、硅酸盐矿渣水泥)、试件(模型试件、模压圆筒试件)、粗集料(混凝土碎石、人造轻骨料)、水灰比(30、35、40、45、50%)和养护(标准养护、水凝、封存、养护、养护)进行了全面综述。风干涂抹)。每立方水水泥为170公斤。采用高效减水剂和高效减水剂配制了坍落度为21 cm的混凝土，主要研究了抗压强度、杨氏模量、抗拉强度、脉动速度、回弹数对试件和圆筒试件的影响。

In recent years, super high-rise reinforced frame-type apartment buildings with specified design strength of 360 to 420 kgf/cm^2, rangings 30 to 40 stories, have become popular in Japan among leading construction.Therefore, this paper presents to a comprehensive review of high-strength concrete with kinds of cements ( normal portland cement, fly ash cement, portland blast-furnace slag cement ), test specimens ( model test specimen, molded cylinder test specimen ), coarse aggregates ( crushed stone for concrete, artificial light-weight aggregate ), water cement ratios (30, 35, 40, 45, 50 % ) and curings ( standard curings, water curings, seald curings, air-dry curings ). The water cement per cubic was 170 kilograms. The concrete was 21cm slump were prepared by using superplasticizer and high-range water reducing agent.Effect of compressive strength, Young's modulus, tensil strength, pulse velocity, rebound number by come test specimen and cylinder test specimen were chiefly studied.