混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
CHINA CONCRETE AND CEMENT PRODUCTS
2014年
10期
30-33
,共4页
页岩陶粒混凝土%工作性%强度%砂率%水灰比
頁巖陶粒混凝土%工作性%彊度%砂率%水灰比
혈암도립혼응토%공작성%강도%사솔%수회비
Shale ceramsite concrete%Workability%Strength%Sand rate%Water-cement ratio
页岩陶粒吸水返水作用对混凝土养护具有重要影响。通过对坍落度和抗压、抗折强度进行对比分析，确定不同砂率和水灰比对页岩陶粒混凝土工作性和强度的影响规律及页岩陶粒混凝土的破坏规律。结果表明，页岩陶粒混凝土的坍落度随砂率的增大而减小，确定满足路用要求的最佳砂率范围（未加减水剂）为35%~39%；页岩陶粒混凝土强度随龄期的变化符合一般规律，与普通混凝土不同的是，强度随水灰比的增大呈现出先增大后降低的变化规律，确定满足路用要求的最适宜水灰比范围为0.37~0.39；页岩陶粒混凝土破坏通常为陶粒断裂和水泥砂浆碎裂，两者协调下，才能充分发挥材料强度。
頁巖陶粒吸水返水作用對混凝土養護具有重要影響。通過對坍落度和抗壓、抗摺彊度進行對比分析，確定不同砂率和水灰比對頁巖陶粒混凝土工作性和彊度的影響規律及頁巖陶粒混凝土的破壞規律。結果錶明，頁巖陶粒混凝土的坍落度隨砂率的增大而減小，確定滿足路用要求的最佳砂率範圍（未加減水劑）為35%~39%；頁巖陶粒混凝土彊度隨齡期的變化符閤一般規律，與普通混凝土不同的是，彊度隨水灰比的增大呈現齣先增大後降低的變化規律，確定滿足路用要求的最適宜水灰比範圍為0.37~0.39；頁巖陶粒混凝土破壞通常為陶粒斷裂和水泥砂漿碎裂，兩者協調下，纔能充分髮揮材料彊度。
혈암도립흡수반수작용대혼응토양호구유중요영향。통과대담락도화항압、항절강도진행대비분석，학정불동사솔화수회비대혈암도립혼응토공작성화강도적영향규률급혈암도립혼응토적파배규률。결과표명，혈암도립혼응토적담락도수사솔적증대이감소，학정만족로용요구적최가사솔범위（미가감수제）위35%~39%；혈암도립혼응토강도수령기적변화부합일반규률，여보통혼응토불동적시，강도수수회비적증대정현출선증대후강저적변화규률，학정만족로용요구적최괄의수회비범위위0.37~0.39；혈암도립혼응토파배통상위도립단렬화수니사장쇄렬，량자협조하，재능충분발휘재료강도。
Concrete curing is influenced by water absorption and desorption of shale ceramsite. In order to determine the influence law of shale ceramsite concrete workability and strength, and failure law affected by different sand rate and water-cement ratio, the slump, compressive strength and flexural strength of shale ceramsite concrete are compared and analyzed. The results show that the slump of shale ceramsite concrete decreases with the increase of sand rate. Determined to meet the best road performance of the sand rate range (not added water reducing agent) is 35%~39%. Shale ceramsite concrete strength increases with the increase of age growth, the same change rule as the normal concrete. However, at the beginning, with the increase of water cement ratio, concrete strength presents increased and then decreased. Determined to meet the best road performance of the water-cement ratio range is 0.37~0.39. The fracture of shale ceramsite concrete is usually ceramsite damage and cement mortar fracture, therefore, the strength of concrete is developed completely through the coordination of those two factors.
