利用C30混凝土预制裂缝，采用快速固化环氧树脂灌浆材料进行裂缝灌浆加固，3天后取芯进行抗压强度和劈裂抗拉强度测试，分别选择含裂缝部位和不含裂缝部位取芯进行测试，对比裂缝灌注3d后加固效果。结果显示，3天芯样抗压强度，含裂缝芯样为38.1MPa，完整芯样为37.2MPa；3天劈裂抗拉强度，含裂缝芯样为4.05MPa，完整芯样为3.94MPa，达到了裂缝处理后3天强度不低于设计值（完整芯样）的目标。", "ds_source": "
委托中国电建集团昆明勘测设计有限公司进行芯样测试，测试方法按照\n《水工混凝土试验规程》（DL/T5150-2017）执行，测试仪器为微机控制电液伺服万能试验机(J-C-104)、电子数显卡尺(J-C-99)", "ds_process_way": "
测得数据分别为试件尺寸、破坏力值，经数学计算得到抗压强度数值。", "ds_quality": "
采用四舍五入方法，抗压强度保留1位小数，劈裂抗拉强度保留2位小数。", "ds_acq_start_time": "2024-08-16 00:00:00", "ds_acq_end_time": "2024-08-16 00:00:00", "ds_acq_place": "昆明", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 11230, "ds_files_count": 2, "ds_format": "*.excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "626f7334-039a-4214-afe5-cf4086bee674.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "973f338d-7fd4-4c6f-aab1-44a5c242d419", "ds_serv_man": "李红星", "ds_serv_phone": "0931-4967592", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "410" ], "quality_level": 3, "publish_time": "2025-06-27 10:01:44", "last_updated": "2025-07-05 15:45:02", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.NHRI_DAM.DB6882.2025", "i18n": { "en": { "title": "The 3-day performance test data of concrete core samples after crack grouting", "ds_format": "*.excel", "ds_source": "
Entrust China Electric Power Construction Group Kunming Survey and Design Co., Ltd. to conduct core sample testing, and the testing method shall be in accordance with\nThe \"Test Code for Hydraulic Concrete\" (DL/T5150-2017) is implemented, and the testing instruments are microcomputer controlled electro-hydraulic servo universal testing machine (J-C-104) and electronic digital caliper (J-C-99)", "ds_quality": "
Using rounding method, the compressive strength is rounded to one decimal place, and the splitting tensile strength is rounded to two decimal places.", "ds_ref_way": "", "ds_abstract": "
Using C30 concrete prefabricated cracks, fast curing epoxy resin grouting material is used for crack grouting reinforcement. After 3 days, core samples are taken for compressive strength and splitting tensile strength testing. Core samples are selected from the crack containing and crack free areas for testing, and the reinforcement effect is compared after 3 days of crack grouting. The results showed that the compressive strength of the 3-day core sample was 38.1 MPa for the cracked core sample and 37.2 MPa for the intact core sample; The 3-day splitting tensile strength was 4.05MPa for the cracked core sample and 3.94MPa for the intact core sample, achieving the goal of a 3-day strength not lower than the design value (intact core sample) after crack treatment.
", "ds_time_res": "", "ds_acq_place": "Kunming", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The measured data are the size of the specimen and the value of the failure force, and the compressive strength value is obtained through mathematical calculation.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "recommendation_value": 0, "license_type": "https://creativecommons.org/licenses/by/4.0/", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "混凝土裂缝", "灌浆", "强度", "环氧灌浆材料" ], "ds_subject_tags": [ "工程与技术科学基础学科" ], "ds_class_tags": [], "ds_locus_tags": [ "昆明" ], "ds_time_tags": [ 2024 ], "ds_contributors": [ { "true_name": "肖承京", "email": "xiaocj@mail.crsri.cn", "work_for": "长江水利委员会长江科学院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "肖承京", "email": "xiaocj@mail.crsri.cn", "work_for": "长江水利委员会长江科学院", "country": "中国" } ], "ds_managers": [ { "true_name": "肖承京", "email": "xiaocj@mail.crsri.cn", "work_for": "长江水利委员会长江科学院", "country": "中国" } ], "category": "水文" }