资源环境与工程
資源環境與工程
자원배경여공정
Resources Environment & Engineering
2015年
5期
722-725
,共4页
软硬相间岩体%混凝土人工骨料%饱和单轴抗压强度%配合比
軟硬相間巖體%混凝土人工骨料%飽和單軸抗壓彊度%配閤比
연경상간암체%혼응토인공골료%포화단축항압강도%배합비
soft and hard interbedded rock mass%artificial concrete aggregate%saturated uniaxial compressive strength%mix proportion
合适的料场对水电工程的成败至关重要. 软硬岩相间岩体中含有较多饱和单轴抗压强度≤40 MPa的相对软岩, 一般不适宜作为混凝土人工骨料. 以某水电站右岸料场砂岩、 板岩互层岩体为例, 主要从强度的角度来探讨软硬相间岩体混凝土骨料的可行性和适宜性. 料场中, 砂岩、 板岩比例约为55:45, 试验表明纯砂岩强度指标满足规范要求, 而纯板岩抗压强度多低于40 MPa. 按砂岩、 板岩50:50和70:30的比例作为骨料分别配制混凝土进行试验, 所得混凝土强度满足C20、 C25混凝土的要求, 则该料场中不低于上述强度比例的砂板混合岩体可作为混凝土骨料, 软硬相间岩体混凝土骨料可行.
閤適的料場對水電工程的成敗至關重要. 軟硬巖相間巖體中含有較多飽和單軸抗壓彊度≤40 MPa的相對軟巖, 一般不適宜作為混凝土人工骨料. 以某水電站右岸料場砂巖、 闆巖互層巖體為例, 主要從彊度的角度來探討軟硬相間巖體混凝土骨料的可行性和適宜性. 料場中, 砂巖、 闆巖比例約為55:45, 試驗錶明純砂巖彊度指標滿足規範要求, 而純闆巖抗壓彊度多低于40 MPa. 按砂巖、 闆巖50:50和70:30的比例作為骨料分彆配製混凝土進行試驗, 所得混凝土彊度滿足C20、 C25混凝土的要求, 則該料場中不低于上述彊度比例的砂闆混閤巖體可作為混凝土骨料, 軟硬相間巖體混凝土骨料可行.
합괄적료장대수전공정적성패지관중요. 연경암상간암체중함유교다포화단축항압강도≤40 MPa적상대연암, 일반불괄의작위혼응토인공골료. 이모수전참우안료장사암、 판암호층암체위례, 주요종강도적각도래탐토연경상간암체혼응토골료적가행성화괄의성. 료장중, 사암、 판암비례약위55:45, 시험표명순사암강도지표만족규범요구, 이순판암항압강도다저우40 MPa. 안사암、 판암50:50화70:30적비례작위골료분별배제혼응토진행시험, 소득혼응토강도만족C20、 C25혼응토적요구, 칙해료장중불저우상술강도비례적사판혼합암체가작위혼응토골료, 연경상간암체혼응토골료가행.
Suitable quarries are crucial to the success of hydropower projects .Soft and hard interbedded rock mass con-tains more soft rock with saturated uniaxial compressive strength of not more than 40 MPa and is generally unsuitable for artificial concrete aggregate .Taking sandstone and slate interbedded rock mass in the right bank quarry of a power station as an example ,mainly from the viewpoint of strength ,discussing whether soft and hard interbedding for artificial concrete aggregate is feasible and appropriate .In the quarry , sandstone and slate content ratio is about 55:45 , tests show pure sandstone strength meets specification requirements , while most of pure slate has saturated compressive strength of less than 40 MPa.Respectively using sandstone ,slate in the proportion of 50:50 and 70:30 as aggregate,concrete mixture is made and tested ,the resulting concrete strength meets C 20 ,C25 concrete requirements ,so the sandstone slate rock mass with higher than above strength proportion in the quarry can be used for concrete aggregate ,soft and hard interbedded rock mass for artificial concrete aggregate is feasible .
